Table 1 Description e-Exercise intervention

Intake

Physical therapist

Anamnesis and physical examination

Assessment in- and exclusion criteria

Providing information about osteoarthritis, e-Exercise and study

Scheduling a follow-up appointment for week 1

Patient

Reading patient information letter

Signing an informed consent

Completing baseline measurement

Start e-Exercise

Week 1

Physical therapist

Providing information about osteoarthritis and e-Exercise

Providing information about the 3-day baseline self-test

Instruction of the 4 stability/mobility exercises

Physical therapist & Patient

Registration on website to participate in e-Exercise

Online selection of central activity and 4 stability/mobility exercises

Providing information about the 3-day baseline self-test

Scheduling a follow-up appointment for week 2

Patient

Signing online treatment agreement

Performance of a 3-day baseline test

Performance of 4 stability/mobility exercises

Week 2

Physical therapist

Providing information about physical activity and pain

Physical therapist & Patient

Evaluation results from the 3-day self-test

Determining short-term goal

Discussing the gradual increase of the selected activity

Evaluation stability/mobility exercises

Scheduling a follow-up appointment for week 6

Patient

Performance of online module 1, each module consists of:

- Gradually increase selected activity

- Video home exercises

- Video/text self-management themes

Week 3-5

Patient

Online modules 2-4

Week 6

Physical therapist & Patient

Evaluation online modules 1-4

Discussing the upcoming steps and weeks

Evaluation stability/mobility exercises

If necessary, scheduling an additional treatment between week 7-11

Scheduling a follow-up appointment for week 12

Patient

Online module 5

Week 7-11

Patient

Online modules 6-10

Week 12

Physical therapist

Discussing long-term goals

Support to maintain a physically active lifestyle

Patient

Online module 11