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Table 1 Complementary outcome measures

From: Effectiveness of three treatment strategies on occupational limitations and quality of life for patients with non-specific chronic low back pain: Is a multidisciplinary approach the key feature to success: study protocol for a randomized controlled trial

Outcomes Criteria Tools
Impairments and activity limitations Pain Visual analog scale [32, 34]
Trunk flexibility Finger-floor distance [31]
Trunk muscles endurance Time of isometric contraction of the flexor muscles of the spine: Ito-test [33]
Time of isometric contraction of the extensors muscles of the spine: Sorensen-test [30]
Loading capacity PILE-test (Progressive Isoinertial Lifting Evaluation) [35, 36]
Anxiety and depression Hospital Anxiety and Depression scale [38].
Personal beliefs and environmental conditions Patient’s fears and beliefs for physical activity by Fear Avoidance Beliefs Questionnaire [37]
Evaluation of the job constrain Work Ability Index questionnaire (WAI) [39]