- Research article
- Open Access
- Open Peer Review
GLA:D® Back group-based patient education integrated with exercises to support self-management of back pain - development, theories and scientific evidence -
BMC Musculoskeletal Disordersvolume 19, Article number: 418 (2018)
Clinical guidelines recommend that people with back pain be given information and education about their back pain, advice to remain active and at work, and exercises to improve mobility and physical activity. Guidelines, however, rarely describe how this is best delivered. The aim of this paper is to present the development, theories, and underlying evidence for ‘GLA:D Back’ - a group education and exercise program that translates guideline recommendations into a clinician-delivered program for the promotion of self-management in people with persistent/recurrent back pain.
GLA:D Back, which included a rationale and objectives for the program, theory and evidence for the interventions, and program materials, was developed using an iterative process. The content of patient education and exercise programs tested in randomised trials was extracted and a multidisciplinary team of expert researchers and clinicians prioritised common elements hypothesised to improve back pain beliefs and management skills. The program was tested on eight people with persistent back pain in a university clinic and 152 patients from nine primary care physiotherapy and chiropractic clinics. Following feedback from the clinicians and patients involved, the working version of the program was created.
Educational components included pain mechanisms, pain modulation, active coping strategies, imaging, physical activity, and exercise that emphasised a balance between the sum of demands and the individual’s capacity. These were operationalised in PowerPoint presentations with supporting text to aid clinicians in delivering two one-hour patient education lectures.
The exercise program included 16 supervised one-hour sessions over 8 weeks, each comprising a warm-up section and eight types of exercises for general flexibility and strengthening of six different muscle groups at four levels of difficulty. The aims of the exercises were to improve overall back fitness and, at the same time, encourage patients to explore variations in movement by incorporating education content into the exercise sessions.
From current best evidence about prognostic factors in back pain and effective treatments for back pain, research and clinical experts developed a ready-to-use structured program - GLA:D® Back - to support self-management for people with persistent/recurrent back pain.
Evidence-based clinical practice guidelines universally recommend patient education, advice to remain active and at work, and exercises as frontline interventions to help people with persistent and/or recurrent episodes of back pain to self-manage . In spite of this, non-evidence-based practices including excessive testing and imaging, prescription of opioids, spinal injections and surgery are commonly used for these patients, and a significant evidence-practice gap exists . Leading back pain researchers are calling for implementation of guideline recommendations in order to avoid harmful treatments in all settings globally .
An example of a successful implementation of clinical guideline recommendations is the GLA:D (Good Life with osteoArthritis in Denmark) for the knee and hip . This program consists of a two-day course that trains clinicians in delivering GLA:D, a standardised evidence-based program for knee and hip pain. GLA:D includes two sessions of patient education and 12 sessions of supervised exercise therapy aimed at teaching patients to self-manage their pain and functional limitations, as well as registration of their data in a clinical database, where they are monitored for one year on a number of outcomes such as pain, physical function, pain medication and quality of life . Since 2013, more than 1000 physiotherapists have been certified and around 36,000 patients included in the clinical registry in Denmark [4, 6]. After participating in GLA:D knee and hip, pain decreased by 26–27%, function improved, fewer people took pain-killers and fewer people were on sick leave . In addition, GLA:D is currently being implemented in Canada, Australia, and China . The GLA:D approach appears to be an effective, feasible and fast method to implement recommendations from clinical guidelines in clinical practice, and a similar approach might be useful to implement recommendations from clinical guidelines for back pain.
Due to the successful implementation of the GLAD knee and hip program, we had requests from clinicians for a similar program for people with back pain. From our networks and collaboration with clinicians, we also had very positive responses to our initial ideas and we therefore found it timely to develop GLA:D Back.
The overall aim of this project was to develop and implement GLA:D Back, an intervention that compiles elements of effective and generally recommended interventions into a standardised care package that is feasible to be delivered by clinicians in primary care (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted). The intention was to promote self-management for people with persistent or recurrent back pain. A self-management intervention has previously been defined as ‘a structured, taught, or self-taught course with distinct components principally aimed at patients (rather than carers) with the goal of improving the participants’ health status or quality of life by teaching them skills to apply to everyday situations’ . The following components have been suggested: psychological (including behavioural or cognitive therapy), mind-body therapies (including relaxation, meditation, or guided imagery), physical activity (including any form of exercise), lifestyle (such as dietary advice and sleep management), and pain education (such as understanding the condition and how to take medication effectively).
In this paper, we present the development, theories, and underlying scientific evidence for the GLA:D Back program, which consists of a standardised clinician-delivered care program for back pain comprising group education and supervised exercises aimed at supporting self-management in people seeking care due to persistent and/or recurrent back pain.
In Section 1, we describe the rationale for developing GLA:D Back, in Section 2, we describe the objectives of the intervention and the hypothesised model of change, Section 3 describes the program design and the underlying theories and evidence, and Section 4, the final content of the program. The implementation and the evaluation of the intervention are described in a separate protocol paper that describes the educational intervention targeted at the clinicians, who will deliver GLA:D Back (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted).
The reporting of the intervention development is inspired by the framework of Intervention Mapping, which is a method for developing behavioural change interventions [8,9,10]. It is particularly useful in complex intervention development as a theoretical framework for optimising potential effects of a new intervention . Accordingly, Section 1 is primarily based on literature reviews and extraction of themes relevant for a group-delivered intervention focusing on self-management. Group and consensus discussions led to the outlining of the objectives for the intervention in Section 2. Section 3 is based on literature reviews of the theory and evidence to support the hypothesis derived from the objectives. The components of GLAD Back are described in Section 4 and based on outlined supporting evidence from the literature in Section 3, as well as piloting and feedback from people with back pain participating in the preliminary program and clinicians participating in the initial training and delivery of the care package (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted and Kongsted A, Hartvigsen J, Boyle E, Ris I, Kjaer P, Thomassen L, Vach W: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Feasibility of implementation by a clinician course, submitted). More details can be found under the heading Intervention Development.
The planning of the GLA:D Back intervention was led by the primary working group (PK, AK, IR and JH) at the University of Southern Denmark (SDU) with the involvement of invited expert clinicians and a multidisciplinary research group of national and international experts within the field, as well as an advisory board (see Acknowledgements).
Some members of the primary working group (PK, JH) are also involved in the Horizon 2020 project selfBACK  that aims to develop a digital decision support system for people with back pain to facilitate, improve and reinforce self-management. One of authors involved in the expert group (AA) is leading the Swedish study implementing a similar program called the BetterBack☺ model of care . The interventions of the GLA:D Back, selfBACK and BetterBack☺ are developed in parallel and share the same theoretical base and several specific components (Svendsen MJ, Sandal LF, Kjaer P, Nicholl BI, Cooper K, Holtermann A, Mair FS, Hartvigsen J, Stochkendahl MJ, Sogaard K et al: Intervention mapping for developing an app-based decision support system to improve self-management of non-specific low back pain (SELFBACK), in preparation).
The literature reviews and drafts for Sections 1–4 (rationale for GLA:D Back, the program objectives, the program design, theories and evidence, and the program) were prepared by the primary working group at SDU in close collaboration with the other authors and people from the multidisciplinary expert group. This was a non-linear process involving literature reviews, group discussions, consensus processes, initial testing and pilot studies [8, 9].
Section 1, rationale for GLA:D Back, was based on literature dealing with back pain, its consequences for the individual and the society, prognostic factors for disabling back pain as well as the challenges facing clinicians. Section 2, program objectives of GLA:D Back, was developed by the primary working group at SDU using an iterative process, with feedback from the expert group, and in collaboration with the selfBACK  and BetterBack☺ groups . It included the results from the processes related to Section 3, program design, theories and evidence, with core elements for the intervention content extracted from clinical guidelines, reviews and randomised controlled trials and these were discussed in the multidisciplinary expert group. Inclusion criteria for the selection of components for the intervention were that they should 1) include patient education, 2) be suitable for groups of patients, 3) be targeting patients with recurrent and/or persistent non-specific back pain, and 4) address factors related to poor outcomes. Consensus on the inclusion of these components was sought over two rounds, where members of the multidisciplinary expert team gave their feedback on, and prioritised, educational aspects and exercises. The first GLA:D Back intervention was then outlined by the authors and further discussed with the multidisciplinary expert team. In Section 4, the final components of the GLA:D Back program were described as well as the testing of this program. The first version of the program was tested initially at the university clinic at SDU by PK, IR and AK and the second version in a pilot study in nine primary care chiropractic and physiotherapy clinics. The detailed results from these studies are reported in separate publications (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted and Kongsted A, Hartvigsen J, Boyle E, Ris I, Kjaer P, Thomassen L, Vach W: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Feasibility of implementation by a clinician course, submitted).
Rationale for GLA:D Back
The burden of back pain
Back pain is the most common reason for people in Denmark visiting general practitioners (GPs)  and it is responsible for more years lived with disability worldwide than any other condition [16, 17]. The societal, health care and economic burden associated with back pain is high and comparable to conditions such as cardiovascular disease, cancer, mental health, and autoimmune diseases . In Denmark, every tenth visit to a GP and every third visit to a chiropractor or physiotherapist is due to back pain . Almost one in five patients consulting a Danish GP for back pain has severe persistent pain . Single episodes of back pain usually resolve quickly but recurrent episodes are very common [20,21,22,23]. Patients with persistent back pain describe the condition as negatively affecting their lives, leaving them disempowered, and that the outcomes of consultations with health care professionals are often inadequate . Further, half of the patients attending a GP due to back pain believe that they need imaging . There is an obvious need to reduce the burden of back pain both in terms of the disability and poor quality of life experienced by people who live with severe back pain and in terms of the substantial costs to society.
A need for care that integrates physical, psychological, and cognitive factors
The traditional biomedical approach to health care implies that a patho-anatomical or patho-physiological diagnosis needs to be established to guide the choice of treatment with the goal of curing the disease. In many non-communicable conditions, such as musculoskeletal disorders and back pain, however, this model is not very useful [16, 26]. In approximately 90% of back pain cases, a specific structural pain generator cannot be identified, and thus, a structural diagnosis cannot guide treatment decisions . In addition, back pain is frequently recurrent or persistent  and in cases where both clinicians and patients often expect to cure the pain, expectations are not met and the diagnosis and treatment are questioned . Consequently, the patient might seek another structural explanation, new testing, and a new treatment. This may explain the increased use of imaging, injections and surgery for back pain without clear targets for the interventions and without positive effects on patient outcomes [2, 28]. The biomedical approach clearly does not address the complex interplay between pain, function, self-perceived limitations, coping, societal circumstances such as labour market conditions, and an individual’s capacity to take control of their own health and cope with changing life circumstances [2, 29].
People with back pain want to be able to control their pain, receive an explanation for their pain, be given a diagnosis, benefit from pain relief, be able to manage everyday life and have a coherent concept about their pain that makes sense to them [27, 30]. These patient goals can be summarised as being able to self-manage, according to the definition we have used in this study .
Models of care based only on structural biomedical beliefs are not helpful for most people with back pain, and there is a need for care based upon a biopsychosocial framework that convincingly communicates the natural course of back pain.
Challenges for the clinician
Clinical guidelines consistently recommend use of patient education, a patient’s active participation, exercises, physical activity, and in some cases, manual therapy with a perspective towards self-management [1, 31, 32]. However, the specific content of the information, education, exercises and physical activity is so far poorly described and implemented. Clinicians dealing with patients with back pain face the challenge of addressing all the relevant components influencing persistent and recurrent back pain in the intervention, and the challenge of integrating these components may be an important factor in the evidence-practice gap . Further to this, successful implementation of guideline recommendations require interventions to be accepted by patients and clinicians and to be feasible in the clinical context . GPs express insecurity and lack of knowledge as a barrier to moving away from the biomedical model towards a more comprehensive bio-psycho-social model . This has led to large variations in the management of patients with back pain and also to conflicting messages to patients. For example, clinician beliefs that promote physical inactivity and sick leave during episodes of back pain hinder the implementation of self-management strategies in clinical practice .
There is a need for more specific descriptions of the content of patient education, exercise and self-management strategies, as well as their method of delivery, and treatment regimen to guide the provision of evidence-based advice and treatment to patients with back pain.
Factors related to disabling back pain
The development of disabling back pain is a complex process affected by multiple internal and external factors of which many are interrelated, and some are modifiable [16, 37]. Socioeconomic factors and a number of comorbidities are not directly modifiable, whereas prognostic factors such as pain intensity, fear of movement, pain catastrophising, negative mood, and negative back pain beliefs may be modifiable with subsequent potential positive impact on disability [16, 38,39,40,41]. Pain catastrophising, pain control and illness perceptions are not only prognostic factors but have also been demonstrated to be potential targets of interventions that mediate the treatment effect [42,43,44].
Central to the development of disability is low self-efficacy (perceived inability to manage back pain) and related factors including pain distress, negative expectations about the course of back pain, fear and perceived low pain control [43,44,45,46,47]. This implies that viewing back pain as a purely structural problem may be unhelpful because structural injury or dysfunction is difficult to control or manage and makes people attempt to avoid stress on painful structures, and adapt their behaviours accordingly [27, 37, 48, 49]. If that adaptation involves reduced activity and less social participation, acts or behaviours to control or avoid pain may become part of the pain condition and the problem itself.
Pain behaviours are shaped by the rules of learning theory through positive and negative reinforcement . For instance, negative health beliefs can lead to complaints of pain and overt expressions of pain, which may be reinforced by increased attention and assessment by health care personnel . Negatively reinforced pain behaviours may develop into maladaptive coping strategies simply because they serve to decrease immediate anxiety and emotional distress.
It may be possible to support patients’ development of self-efficacy through 1) providing positive experience with performance, 2) vicarious experience by observing other people in a similar situation, 3) social persuasion, and 4) assisting patients in the interpretation of physiological feedback during activities .
It is important that interventions for back pain not only focus on anatomical or physiological problems but also consider these in connection with psychological, social and behavioural aspects of the pain condition which address positive operant conditioning and the learning of adaptive self-management strategies , while avoiding negative reinforcement of maladaptive behaviours .
In persistent back pain, habitual and restricted movement patterns are often present . This is an important part of disability because free movement and easy engagement in daily activities are hindered, and this may in itself maintain pain [56, 57]. Alterations to movement have been described and indicate that people with chronic back pain have less variation in movement, which can be caused by stereotypical habituated recruitment of muscle fibres or by avoidance of certain movements [56, 58]. In addition, feelings, thoughts and behaviours are closely connected, and movement patterns associated with back pain can be strongly influenced by beliefs and fears of damaging spinal structures [37, 59,60,61,62,63].
Disabling back pain is related to low self-efficacy, fear of movement, negative beliefs and reduced variation in movement, all of which are interrelated. Therefore, people with persistent back pain need to be educated about these relationships to understand that back pain can be controlled and managed through new ways of thinking, movement and active living.
The context for the GLA:D Back intervention
In Denmark, people with non-specific back pain are primarily managed by GPs, chiropractors, and physiotherapists, and to a smaller degree in outpatient hospital clinics and municipality rehabilitation centres. GPs, physiotherapists and chiropractors in primary care are self-employed, with GP services being fully reimbursed by the universal health insurance, and physiotherapist and chiropractic services being partly reimbursed. The target population for GLA:D Back is people with back pain consulting one of the 2850 physiotherapists or 410 chiropractors working in primary care (2017 numbers) or in the municipality rehabilitation centres. Patients are typically referred to physiotherapists from a GP or they self-refer to chiropractors. More details about the setting are provided in the GLA:D Back protocol paper (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted).
Summary of rationale for GLA:D Back
The literature reviews and the discussions within the planning group led to the identification of a number of obvious needs of patients with persistent back pain, for clinicians dealing with these patients, and for society. An overview of who and what needs to change for the patients is summarised in Table 1. Primarily, there is a need for interventions that provide a change in a patient’s beliefs, feelings and behaviours associated with back pain through helpful explanations of pain that can replace purely structural explanations, help the patient with disability to restore varied movement and have confidence in movement and physical activities, all of which are intended to support a patient’s engagement with self-management strategies. Thus, GLA:D Back was developed to address prognostic factors of disabling back pain and potential treatment effect mediators by compiling elements of effective interventions into a care package that would be feasible in primary care and acceptable to patients and clinicians.
We also identified a number of change objects for the clinician and the society (see Table 2). These are further addressed in the protocol paper where the implementation is described in more detail (Kongsted 2018a, in submission).
The overall goal
The overall program goal is to reduce the burden of back pain for individuals and for society by improving patient self-management and reducing the use of health care services that are ineffective or potentially harmful .
The immediate objectives of GLA:D Back are 1) to provide patients with knowledge to understand back pain as a benign and recurrent condition influenced by multiple factors, and 2) to provide patients with skills in pain management strategies, in specific back exercises and in exploring variation in movement (Fig. 1). The detailed change objects for the patients with back pain are shown in Table 1.
Performance and behavioural objectives
The main performance objectives are that the participating patients can self-manage their pain, have knowledge about pain and how it can be influenced and managed, have less fear of pain, have positive expectations about their back, move more freely and increase their physical and mental capacities. All performance objectives are listed in Table 3.
We hypothesised that improved illness beliefs, increased perceived ability to perform exercises and being physically active lead to reduced fear, improved expectations and increased perceived physical capacity. These changes were then hypothesised to increase patients’ self-efficacy, which in turn was expected to improve daily functioning, quality of life and pain levels and thereby improve self-management. Finally, this was intended to translate into reduced health care utilisation and back pain-related sick leave (Fig 1). The outcome measures for the different domains are listed in Table 4.
Program design: Hypothesis, theories and evidence
In this section, we present hypotheses, theories and evidence to support the GLA:D Back intervention focusing on the following six topics: self-management, the cognitive approach, education for back pain, exercises for back pain, combined education plus exercise for back pain, and pedagogic considerations.
We hypothesised that increased knowledge and improved cognitive and physical skills would help reduce the negative impact of back pain through an increased ability to manage everyday life reflected in improved self-efficacy, less disability and less need for health care (Table 3).
Core elements of self-management interventions are patients engaging in their own care and health-promoting activities, setting goals with the clinician who can help them to make informed choices, and being empowered through knowledge about the condition [64,65,66]. This has previously been pursued by combining elements of patient education, physical activity, exercises and cognitive therapy . Overall, such programs have shown small to moderate effects on pain, disability and self-efficacy, whereas there is no consensus on direct measures of the ability to self-manage [64, 65]. A clear limitation of most interventions that were described as self-management interventions for back pain is the lack of a theoretical base , and importantly, no evident attempt to integrate educational elements and physical activities or exercises . In contrast, this integration has been a focus of Cognitive Functional Therapy (CFT) .
The cognitive approach
We hypothesised that changes in beliefs and performances would increase patients’ ability to self-manage their back problem.
The model to facilitate self-management and behavioural change is based upon the Cognitive Behaviour Therapy (CBT) model . The model outlines how cognitive appraisals, i.e. pain catastrophising and poor health beliefs negatively influence feelings, bodily sensations and behaviours, a process that is reciprocal and often leads to individuals being caught in vicious cycles and maladaptive pain behaviours. This vicious cycle is well described in the very influential ‘fear-avoidance’ model of chronic back pain . Also, pain relief or pain control may for some patients become such a dominating or salient goal that it interferes with other valuable life goals resulting in activity avoidance . In this case, psychoeducation in the model of pain being a dynamic system affected by cognitions, emotions and behaviours, combined with group exercises in problem-solving skills and graded exposure to important everyday life activities, is a means to restore activity engagement. Hence, patient education with a CBT approach should evolve around psychoeducation about pain, and the promotion of pain coping skills like activity pacing and progression guidance, goal-setting, action planning and relaxation techniques . Following this concept, GLA:D Back intends to reinforce healthy behaviours and reduce pain behaviours by using key messages in pain education focused on creating positive expectations such as hurt does not equal harm and movement inhibits pain in addition to goal-setting.
There is evidence from several reviews that CBT approaches addressing risk factors such as fear-avoidance beliefs and pain-catastrophising can improve fear-avoidance beliefs, pain, disability and quality of life in comparison with no treatment or usual care [70,71,72,73,74,75,76,77]. One review showed high-quality evidence that CBT interventions provided by trained physiotherapists and delivered within a physiotherapy setting were more effective than other guideline-based treatments . However, there is inadequate information in the studies on how the evidence-based CBT interventions were implemented in clinical practice. Operant conditioning has been shown in a systematic review to be a promising CBT-based strategy for the prevention of chronic back pain .
Education for back pain
The performance objectives related to education are listed in Table 3 and we proposed two different hypotheses with their underlying theories and evidence:
We hypothesised that : a) a person with back pain would be able to manage his/her pain through knowledge about non-specific back pain, its pain mechanisms, sources, trajectories and prognosis and thereby change back pain beliefs, expectations and fear of movement, and b) a person with back pain would be able to understand and control his/her pain through knowledge about pain mechanisms, knowledge about how thoughts, fear and beliefs influence the pain experience, knowledge about pain being influenced by distraction, exercise and physical activity, positive non-fearful experience with movement and exercise, staying active and adapting activities, thereby changing back pain beliefs, and fear of movement.
The most consistent themes in education in the clinical guidelines involve information about what back pain is and what can be expected in the future; reassurance; understanding and accepting pain; avoiding catastrophising and negative thoughts; and encouragement to stay physically active and continue with normal activities including work [1, 31, 32, 69, 78,79,80]. However, the completeness in the reporting of the content is poor and often not in accordance with the underlying randomised controlled trials . From pain science, it is well-established that cognitions and feelings affect central pain modulation and thereby pain intensity  and the relationship is bidirectional with the pain experience also affecting thoughts, beliefs and feelings, such as fear avoidance beliefs, hypervigilance, expectations, and anxiety [41, 83].
Response to pain is influenced by beliefs about it and its emotional significance , shaped by our memories and prior experience [50, 84]. Most importantly, beliefs are about the nature of pain, self-efficacy, and the consequences of harm and further injury . Also, attitudes and beliefs of the health care practitioners influence patients’ beliefs and are significantly associated with the health care practitioners’ advice and recommendations and treatment decisions .
Despite patient education being promoted in all guidelines , the evidence for its effect is sparse and conflicting . One systematic review that included only two studies with very low-quality evidence, suggested education in pain neurophysiology to be a promising intervention for the primary outcome measures of pain, physical, psychological and social function , while a more recent review has shown there is moderate to high-quality evidence that patient education in primary care can provide long-term reassurance for patients with acute or subacute low back pain .
Exercise for back pain
We hypothesised that people with back pain would improve the variability of their individual back movements and move more freely through knowledge about the effects of different types of exercises, goal-setting, exercises for strength, flexibility, exploring movement, and motivation for activities to improve physical capacity (Table 2).
The exercise program is based on theories about changes in physical functioning , neuromuscular changes , decrease in physical fitness  as well as altered patterns of activity  and levels of activity  as reported in people with back pain. Uniform and restricted movement patterns are often present in people with back pain [55,56,57]. Alterations of movement have been measured and described in various ways and indicate that people with chronic back pain have reduced variation in movement, which can be within the muscle as stereotypical habituated recruitment of muscle fibres or it can be by avoidance of certain movements [56, 58]. This may lead to deconditioning , where people with back pain are restricted in performing everyday physical activities and at higher risk of developing an inactive lifestyle. This may set up a vicious cycle of inactivity where a reduction in physical fitness (deconditioning) leads to further reduced activity.
Exercises should be tailored to the individual and consider the individual’s thoughts, beliefs, fears, motivation and previous experience, as well as physical capacity and confidence in exercising.
Generally, exercise therapy is recommended for reducing musculoskeletal pain , and there is substantial evidence from systematic reviews to support exercise therapy as an effective [95,96,97,98,99,100,101] and cost-effective  intervention for reducing pain and improving function and quality of life in people with back pain. Four systematic reviews have addressed therapeutic exercise as a prevention strategy, either as a post-treatment intervention or as a particular part of the intervention focusing on prevention of recurrence and duration of new episodes [95, 103,104,105]. Positive effects have been reported for different types of exercise therapy spanning general strengthening [101, 106,107,108], endurance training , direction-specific repeated movements and flexibility [99, 100, 110, 111], yoga, Pilates [108, 112], and motor control exercises [96, 97, 99, 113, 114] with a focus on specific muscles such as the transverse abdominal or multifidus muscles as compared with no treatment or ‘usual care’ . No single form of exercise is clearly superior to any other, but exercise seems to be more effective in people with chronic and persistent back pain than in people with back pain of shorter duration .
The dose of exercise in primary randomised controlled trials included in the reviews is not always clearly described. In an early review of exercise for back pain, an average of 16 weeks of exercise was identified from 61 studies, but weekly frequency was not reported . Although inconclusive, it appears that longer durations of exercise periods and heavier training is more effective in reducing back pain when compared with shorter periods and lighter loads . Based on an average duration of 8 weeks for interventions reported in a systematic review of programs aiming to develop patient self-management for chronic low back pain , as well as consensus within the multidisciplinary expert team and feedback during the piloting of the care package, an 8-week intervention period with a total of 16 sessions was considered adequate to support the aims of the care package and the needs of patients and care givers. The American College of Sports Medicine recommends 2–3 weekly sessions for muscle training at 60–70% of one repetition maximum (RM) for novice trainers and 80% of 1RM for experienced people, sets of 8–12 repetitions for strength and power and > 15 for endurance . To maintain good range of motion, flexibility exercises to end range are recommended 2–3 days a week, held for 30 s and repeated 2–4 times . The recommendations for improving cardiovascular fitness are 5 days/week of moderate exercise (Borg ratings of perceived exertion (RPE) 12–16) 30-60 min/day, or 3 days/week of vigorous exercise (Borg RPE 17–20) 150 mins/week, or a combination of moderate and vigorous exercise 3–5 days/week .
We hypothesised that a close integration of the key messages from patient education including knowledge about pain mechanisms and addressing pain-related fears in the exercise sessions would improve the outcomes for patients more than stand-alone interventions. This is supported by the previously outlined theories and emerging evidence of positive outcomes on function and pain in the literature [37, 117,118,119,120,121,122,123].
By also implementing the theory of operant conditioning in the exercise sessions, GLA:D Back intends to reinforce healthy behaviours and reduce pain behaviours by using an exercise quota for increasing general activity levels, which is gradually built up towards a realistic predefined goal . The key messages from pain education will be repeated during the exercise sessions to increase self-management (Table 2).
More recent papers, for example on CFT, emphasise the potential of combining educational, cognitive and exercise approaches [37, 117,118,119,120,121] and a randomised controlled trial has shown larger effect sizes for pain reduction and functional limitations than are normally seen in interventions for back pain [122, 123]. New models of care, where patients are stratified to a combined exercise and cognitive approach for the most severe incidences of back pain, have shown promising results and, in particular, to be cost-saving because of the reduction in unnecessary treatments . Another recent example of effective and combined interventions is the Back Skills Training Trial where a structured group-based program based on a multidisciplinary cognitive behavioural intervention showed better outcomes in functional limitation from this intervention arm  as well as improved cost-effectiveness .
A recent review also showed the largest reduction (45%) in new episodes of back pain with interventions combining exercise and patient education .
We hypothesised that an active learning environment with patient involvement would be needed to achieve reflection on thoughts, beliefs and behaviours.
For patients to change thoughts, beliefs and behaviours, we considered several theories about achieving self-efficacy and behavioural change [10, 52], individual learning strategies [127, 128], problem-based learning , and how to deliver the interventions. The program was built on the basic idea of creating a learning environment where there is capacity for patients to try to formulate and discuss both the theory and practice of doing exercise in an interactive and supportive context . Despite the poor scientific support for different learning styles [127, 128], these theories were taken into account by using both audio and visual presentations during patient education, and taking the key messages to the practical sessions, where they were repeated while doing exercises in order to create an embodied experience [131, 132].
The program presented here is the final version of GLA:D Back after implementing feedback from the initial testing and pilot studies.
GLA:D Back includes an initial individual testing session, two group sessions of patient education, 16 bi-weekly one-hour sessions of supervised group exercises, and a final individual testing session. This structure is identical to the original GLA:D knee and hip program, with the exception of the length of the exercise program being 8 weeks compared with 6 weeks for GLA:D knee and hip .
Individual testing sessions and goal-setting
At the individual testing session, the patient is registered in the database and results from the performance tests: standing forward bending test , back extensor endurance test [134, 135], trunk flexor endurance test [135, 136] and the sit-to-stand test [137, 138] are recorded electronically. Instructions including detailed descriptions and photos are made available to the GLA:D Back clinician.
The database is a key element in GLA:D Back and it is a requirement for all participating clinicians and patients to enter their data. After the clinician registers the patients, they receive a link to the database by email. This opens the baseline registration of key information about the patients and the automatic follow up at 3, 6 and 12 months on the patients’ outcomes. For more details about the database and outcome measures (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted).
The level at which to start the exercises is explored by the patient in collaboration with the clinician. For each of the eight types of exercise (see below), the difficulty for the patient is discussed in order to give the patient an idea of the entry level for each exercise type in the group sessions.
During the initial session, the patient and the clinician discuss the patient’s goals with respect to participating in the program. The goal-setting session is inspired by the Specific, Measurable, Attainable, Realistic Timed (SMART) concept . Goals related to function and participation in everyday life are formulated, written on the patient’s personal exercise program, and entered into the database by the clinician. Furthermore, the number of weeks, time or repetitions to reach the goal and the acceptable level of discomfort related to attaining the goal are recorded.
At the final individual testing session, after completing the program, the performance tests are repeated, and the goal attainment is evaluated. The results are entered into the database by the clinician.
The two educational sessions address the balance between demands and capacity (Fig. 2), the causes and clinical course of back pain, symptoms, need for imaging, treatment options, pain explanations, management of pain, and first aid for back pain. The content has been extracted from patient education used in randomised controlled trials (RCT) and builds on the previously identified needs of the patients, modifiable risk factors, as well as the proposed change objects (Table 1) and performance objectives (Table 3 and Fig. 1). For this, the primary working group produced two PowerPoint (PPT) slide presentations with full manuscripts to be used by treating clinicians. As a supplement to the PPT slides, paper-based information summaries were produced for patient involvement and engagement in the educational sessions, for example, for the patient to consider factors that increase or reduce the pain experience. The key messages (Table 3 and Fig. 3) were printed on a poster to be used during the education and exercise sessions. The PPT slides and related manuscript are made available to GLA:D Back providers online and examples are printed for the clinician course.
The exercise program includes a warm-up session of five exercises (awareness of the back, pelvic tilt, lumbar rotation, arm movements, whole-body movement in standing), well known exercises targeting the muscles of the back extensors, abdominals, lateral buttocks, trunk rotators, posterior buttocks, leg muscles, oblique abdominals (e.g. the plank, diagonal arm and leg lift), as well as exercises for flexibility (Additional file 1). For each of the eight types of exercise, four different levels of difficulty are shown, including photos and written instructions (see example shown in Fig. 4 and an overview of all exercises in Additional file 1). After each type of exercise, a diary is available where the patient records the level of each exercise for each training session during the eight-week period. The program ends with examples of eight different stretching exercises shown as photographs and written instructions.
The written exercise program is used throughout the 16 sessions of exercise over 8 weeks and the patients are encouraged to use it at home. The average duration of interventions reported in a systematic review of programs aimed at developing patient self-management for chronic low back pain support this duration of intervention . As a supplement to the exercise program, we produced posters showing all exercises to be placed in the training facilities for an easy overview (Additional file 1).
Each exercise session includes discussions with the patients about experiences since the previous session, goal attainment, physical activity, elements from the patient education, a short warm-up session, two to three sets of the eight types of exercises, aiming for between 8 and 12 repetitions of each, and an optional short stretching session at the end of the session. The stretching part was optional due to time constraints and because stretching exercises on their own were not considered important. The patient works at his/her own level at each type of exercise and is encouraged to take responsibility for progression by evaluating his/her own performance and recording the level of the exercise, the number of repetitions in each set and the number of sets for each exercise. When a target of three sets of 10 repetitions is reached, the patient is encouraged to continue to the next and more difficult level and if this is too hard, to stay at the same level, and on bad days, to perform the exercise at a lower level. The clinician guides the patient to ensure that movements judged to be impaired or avoided are not resumed and habitual uniform inappropriate movement patterns are challenged.
During exercise sessions positive and negative pain responses explored by the participants are addressed with curiosity and seen as a potential means for learning how to manage pain, by doing more, doing less, doing the exercise differently, doing deep breathing or doing another exercise and exploring new ways to move that are less painful. Also, emphases are placed on the fact that none of the exercises can damage or harm the back. One review explored whether exercises for musculoskeletal pain should be painful or not . However, only one study concerned back pain and there were no differences in pain outcomes for those who trained with pain and those who did not .
Integrating educational components in exercise sessions
To facilitate the learning experience, the clinician directs the patient’s attention towards the bodily experience when doing the exercises, exploring variation in performing the movements rather than doing the exercises in a standardised and ‘correct’ manner, and to move the patient’s focus away from paying attention to the pain. To support the delivery of exercises within this context, a document with the central messages for the training sessions was developed that includes the primary foci during the exercises: confidence in performing the exercises, enjoying movement, management of pain provocation, reasons for pain, and ownership of exercises. This approach is aimed at reducing the patient’s dependency on clinicians and to facilitate the patient’s feeling of competence in managing his/her own exercises now and into the future (For more details, see Additional file 2).
To facilitate the proposed learning objectives from the patient education sessions, we extracted eight different themes from the patient education material: posture and spinal abnormalities; pain equals alarm - not harm; the spine is made for movement; natural movements inhibit pain; training strengthens the back; action precedes improvement; the back is strong; and the brain can turn the pain up or down (Fig. 2). These are introduced with reference to specific slides of the patient education PPT presentations and suggestions for introducing the theme and for practical implementation in the training session. The themes were printed on single sheets with a key message on one side and facilitating questions on the other side, as well as an A0 poster including all messages and the balance model (Fig. 2).
In the initial testing, the first version of GLA:D Back was delivered to a group of eight people with persistent back pain at SDU. In order to collect information for the program development, patients were interviewed about their back pain and filled in questionnaires before and after the intervention. The education sessions were recorded on video and a person from the research group was present to observe the two lectures. This, together with patient feedback, informed adjustments to the content and the pedagogic methods used. During the 16 exercise sessions, instructors experimented with delivery methods and patient responses were recorded each time to inform further adjustments to the content and the delivery of the exercises.
A pilot study was conducted at five physiotherapy and four chiropractic clinics geographically spread over Denmark (Kongsted A, Hartvigsen J, Boyle E, Ris I, Kjaer P, Thomassen L, Vach W: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Feasibility of implementation by a clinician course, submitted). At these locations, the clinical registry, the patient education program, and exercise programs were tested under real-life circumstances. A focus group interview with five clinicians and a feedback meeting was conducted with input from eleven clinicians. Furthermore, the outcomes of patients participating in the GLA:D Back program were compared with those of a group of patients with persistent back pain seen in the same clinics before the implementation. The detailed results for patients and clinicians are reported in a separate publication (Kongsted A, Hartvigsen J, Boyle E, Ris I, Kjaer P, Thomassen L, Vach W: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Feasibility of implementation by a clinician course, submitted). The pilot study resulted in adjustments to the content and layout of the course material, but no major changes in the overall program.
Adjustments to the program
The content of GLA:D Back is expected to undergo continuous refinements during and beyond the implementation period. The core elements that are not subject to change are the structure of the program with individual sessions in the beginning and at the end of the program, patient education and supervised exercises, the key message that pain is not a sign of harm, the use of a behavioural model to explain the balance between demands and capacity rather than emphasising tissue damage to explain pain, and exercises delivered in such a way as to explore movement rather than to perform them in a standardised manner. The clinician and the patients are obliged to register data and outcomes in the clinical registry.
This paper describes how we developed the GLA:D Back program for people with persistent or recurrent back pain including its underlying theories and scientific evidence. The overarching aim of the program is to improve the ability of people with persistent or recurrent back pain to self-manage. The elements of GLA:D Back target factors that broadly affect prognosis for pain, activity limitation and deconditioning, and these elements are well suited to self-management. Thus, the novelty as compared with existing self-management interventions for back pain is the integration of patient education and exercise therapy that includes a clear aim to address known prognostic factors for developing back pain related disability. In addition to this, it was a strong focus to make the intervention feasible and acceptable for delivery in primary care after a short training course, and furthermore, that registration of patient outcomes in a clinical registry is a mandatory part of the program. Importantly, contrary to most existing programs, links to theories and existing evidence are made explicit during the course, in education material and in publications such as this one.
Reasons for creating the GLA:D Back included requests from clinicians due to the success of the GLA:D knee and hip program , and our intention to develop an evidence-based care package based on the most recent clinical guidelines available to patients and clinicians. We reviewed and analysed the scientific literature about back pain, its clinical course, related disability, prognostic factors, and qualitative studies about the challenges faced by clinicians when managing people with back pain. We involved clinicians in the reference group but did not systematically study clinicians’ need prior to developing the program. Also, within the multidisciplinary research expert group, many different professions were represented both as clinicians and researchers.
The burden of back pain disability is evident worldwide, not just in Denmark [15,16,17,18]. Reducing this burden will not be achieved by GLA:D Back alone. There is an urgent need for system changes and an even larger-scale implementation of evidence across professions and sectors. We could have involved in the design of GLA:D Back more diverse health system stakeholders from the Danish regional health authorities, politicians and professional health care organisations, who are responsible for organising and delivering health care in Denmark. However, our experience has been that this can often be challenging when discussions regress to being about managerial, budget and professional political interests. During the process, we were approached by one regional health authority and we arranged meetings that included representatives from GPs, chiropracto rs and physiotherapists from the five regions of Denmark. This has resulted in a continuing and positive dialogue with the regions and the health care provider representatives. We believe that this on-going dialogue has eventuated because we intended to develop and offer courses in GLA:D Back regardless of objections from administrators or professional organisations with vested political interests.
GLA:D Back is unique as a group intervention because of its close integration of patient education and exercise using an individualised cognitive approach, which is driven by the patient’s personal goals and capacities. In the literature, combined and individualised multifaceted interventions seem to have superior outcomes when compared with interventions that have single-facetted interventions [37, 95, 117,118,119,120,121,122,123, 125, 126]. Therefore, we designed the program to implement the key messages from the educational sessions into the exercise sessions. This was possible because GLA:D Back is founded on social cognitive theory, cognitive behavioural theory , operant conditioning , and behavioural change theories , where patients face their individual challenges using an exploratory approach and actively participate in tasks during both the education and exercise sessions.
These elements could have been introduced in different ways. We chose to adapt the framework of the GLA:D program for knee and hip pain because this framework has been successful and is well known to clinicians in Denmark . The GLA:D framework includes three mandatory elements: 1) a course for clinicians, 2) education and supervised exercise for patients and 3) evaluation using data gathered via a registry.
The GLA:D Back program is a generic care package potentially implementable in different health systems. Similar principles have been applied in the Swedish BetterBack☺ model of care  and the Horizon 2020 project selfBACK (Svendsen MJ, Sandal LF, Kjaer P, Nicholl BI, Cooper K, Holtermann A, Mair FS, Hartvigsen J, Stochkendahl MJ, Sogaard K et al: Intervention mapping for developing an app-based decision support system to improve self-management of non-specific low back pain (SELFBACK), in preparation) , which provide potential for comparing future research outcomes. However, the content of the BetterBack☺ model of care is specifically adapted to the Swedish health care system while the selfBACK intervention is delivered using smartphone technology.
Other studies have already developed self-management programs that target psychosocial factors in chronic low back pain, for example, `Back on Track´ , and for osteoarthritis and low back pain in the `SOLAS´ study . Both studies have outlined comprehensive theory for their intervention components with particular focus on education that addresses modifiable risk factors. Clinical trials are planned in both studies [142, 143] but so far, we have only seen promising results from the feasibility of the clinician training . These studies inform and support our development of the GLA:D Back intervention. However, we believe that stronger integration between the theoretical components of patient education and performing higher dose individualised exercises will improve the probability of success with our intervention.
There is no generally agreed instrument designed to measure self-management. However, a very recent review identified 14 different proxy measures in 25 RCTs for self-management of which self-efficacy was the most common , although self-efficacy and self-management are different constructs.
GLA:D Back is built on the best available and generally recommended evidence for the management of people with persistent or recurrent back pain . All the components of education, exercise and cognitive approaches included in GLA:D Back have been evaluated and found effective in numerous clinical trials. GLA:D Back has not been tested for effectiveness in a randomised clinical trial prior to implementation in Denmark but we have set up an ambitious implementation and evaluation plan to document the effects for individuals and society (Kongsted A, Ris I, Kjaer P, Vach W, Morso L, Hartvigsen J: GLA:D® Back: Implementation of group-based patient education integrated with exercises to support self-management of back pain. Protocol for a hybrid effectiveness-implementation study, submitted). Furthermore, plans for randomised controlled trials are underway in Canada and Australia and these will, together with the implementation and outcomes research, inform future revisions and modifications of the program.
The GLA:D Back program for people with persistent or recurrent non-specific back pain includes two lectures of patient education and 16 twice-weekly exercise sessions. The content is aligned with clinical guideline recommendations and elements compiled from the underlying scientific literature about patient education, exercises and prognostic factors. It is an evidence-based program based on Social Cognitive Theory targeting patients’ goals, while considering their individual capacity for performance. The program will be implemented in Denmark in 2018 and the effects will be monitored at the individual and societal levels using data gathered via a clinical registry.
Brief Illness perceptions questionnaire
- GLA:D® :
Good Life with osteoArthritis in Denmark
Randomised controlled trail
Ratings of perceived exertion
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We would like to acknowledge Associate Professor Lotte O’Neill from the SDU Centre for Teaching and Learning for her input to defining learning goals and evaluating the clinician course. The selfBACK project (European Union Horizon 2020 research and innovation programme, grant agreement No. 689043) is acknowledged for sharing its resources in the development of GLA:D Back, and in particular Louise Fleng Sandal and Line Thomassen for their responsibilities in developing and recording the exercise components. We also acknowledge the multidisciplinary expert group whose members are:
Paul Jarle Mork, Department of Public Health and Nursing at the Norwegian University of Science and Technology, Trondheim, Norway.
Karen Søgaard, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
Line Thomassen, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
Thomas Bredal, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
Rikke Krüger Jensen, Nordic Institute of Chiropractic and Clinical Biomechanics, Denmark.
Lars Morso, Centre for Quality, Region of Southern Denmark, Denmark.
Greg Kawchuk, Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Canada.
Lisbeth Hartvigsen, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark.
Malene Jagd Svendsen, National Research Centre for the Working Environment, Copenhagen, Denmark.
All authors of this manuscript were members of this group.
Finally, the GLA:D Back advisory group is acknowledged for its input to the project. Its members are:
Professor Ewa M Roos, Centre for Muscle and Joint Health, SDU, Denmark.
Professor Birgitta Öberg, Department of Medical and Health Sciences, Linköping University, Sweden.
Director and research leader Henrik Wulff Christensen, Nordic Institute of Chiropractic and Clinical Biomechanics, Denmark.
Associate Professor Christian von Plessen, Centre for Quality, Region of Southern Denmark, Denmark.
Professor Jens Søndergaard, Research Unit for General Practice, University of Southern Denmark, Denmark.
Associate Professor Søren T Skou, Centre for Muscle and Joint Health, University of Southern Denmark, Denmark.
Professor Bart Koes, Department of General Practice, Erasmus MC, The Netherlands.
Professor Chris Maher, Sydney School of Public Health, The University of Sydney, Australia.
Professor Berit Schiøttz-Christensen, The Spine Centre of Southern Denmark, Denmark.
Associate Professor Tonny Andersen, Department of Psychology, University of Southern Denmark, Denmark.
Business Developer Lars Stig Møller, University of Southern Denmark IRO, Denmark.
Professor Per Nilsen, Department of Medical and Health Sciences, Linköping University, Sweden.
Werner Vach, Department of Orthopedics and Traumatology, University Hospital Basel, Switzerland.
No funding was obtained for the work.
Availability of data and materials
Data sharing is not applicable to this article as no datasets were generated or analysed during the current study.
Ethics approval and consent to participate
The Regional Committees on Health Research Ethics for Southern Denmark decided that the study did not need ethical approval (file number S-20172000-93). Authorisation for the data collection has been obtained from the Danish Data Protection Agency (DPA) as part of the University of Southern Denmark’s institutional authorisation (DPA no. 2015-57-0008 SDU no. 17/30591).
Consent for publication
The manuscript does not include any individual person’s data. The individual depicted in the images provided her written informed consent for the publication of these identifiable images
The authors declare to have no competing interests. PK’s position at the University of Southern Denmark is financially supported by the University College Lillebaelt, Odense, Denmark.
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
GLA:D® Back Exercise program. The individual depicted in the images provided her written informed consent for the publication of these identifiable images (GLA:D® is a registered Trademark of the University of Southern Denmark: The name can only be used for an intervention if all criteria described by the University of Southern Denmark are met). (PDF 650 kb)
Suggestions for different types of instruction for the exercises. (DOCX 42 kb)