N/A
N=51
SuPRA: Using Wearable Activity Trackers With a New Application to Improve Physical Activity in Knee Osteoarthritis
Joint Diseases · Knee Osteoarthritis
Bottom Line
View on ClinicalTrials.gov: NCT02585323 ↗Enrolled (actual)
51
Serious AEs
0.0%
Results posted
Oct 2025
Primary outcome: Primary: Daily Number of Minutes in Moderate/Vigorous Physical Activity — 31.0; 71.3; 37.7; 49.4 Minutes per day — p=0.05
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- Education session, Fitbit/FitViz, PT counselling (Behavioral); Same intervention with a 3 month delay (Behavioral)
- Age
- Adult, Older Adult · 19+ yrs
- Sex
- All
- Sponsor
- University of British Columbia
- Primary completion
- Aug 2019
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Daily Number of Minutes in Moderate/Vigorous Physical Activity |
31.0; 71.3; 37.7; 49.4; 37.0; 74.6 | 0.05 |
| SECONDARY Daily Number of Sedentary Minutes |
567.5; 551.1; 531.4; 558.3; 492.5; 499.5 | 0.05 |
| SECONDARY Knee Injury and Osteoarthritis Outcome Score (KOOS) - Symptom |
68.5; 65.7; 69.3; 66.9; 65.4; 72.2 | 0.05 |
| SECONDARY Knee Injury and Osteoarthritis Outcome Score (KOOS) - Pain |
72.6; 65.1; 73.1; 65.9; 72.5; 74.8 | 0.05 |
| SECONDARY Knee Injury and Osteoarthritis Outcome Score (KOOS) - Sport and Recreation |
47.9; 46.8; 47.1; 52.5; 50.5; 62.5 | 0.05 |
| SECONDARY Knee Injury and Osteoarthritis Outcome Score (KOOS) - Activity of Daily Living |
75.5; 72.2; 75.0; 70.3; 77.7; 80.3 | 0.05 |
| SECONDARY Knee Injury and Osteoarthritis Outcome Score (KOOS) - Quality of Life |
44.0; 47.5; 48.7; 46.9; 49.4; 54.7 | 0.05 |
| SECONDARY The Patient Health Questionnaire-9 (PHQ-9) |
5.2; 5.4; 4.0; 4.7; 3.6; 4.5 | 0.05 |
| SECONDARY Partners in Health Scale |
76.8; 78.0; 76.7; 81.6; 78.9; 82.6 | 0.05 |
| SECONDARY Self-Reported Habit Index (SRHI) - Sitting at Work Subscale |
5.0; 4.5; 5.2; 4.4; 4.7; 4.3 | 0.05 |
| SECONDARY Self-Reported Habit Index (SRHI) - Sitting at Leisure Subscale |
4.8; 5.1; 5.1; 4.7; 5.0; 4.4 | 0.05 |
| SECONDARY Self-Reported Habit Index (SRHI) - Walking Subscale |
4.3; 4.8; 4.4; 4.6; 4.6; 4.8 | 0.05 |
| SECONDARY Theory of Planned Behavior Questionnaire - Attitude Toward Physical Activity |
6.0; 6.1; 5.9; 6.1; 6.0; 6.2 | 0.05 |
| SECONDARY Theory of Planned Behavior Questionnaire - Subjective Norm |
6.2; 6.3; 6.2; 6.2; 6.1; 6.3 | 0.05 |
| SECONDARY Theory of Planned Behavior Questionnaire - Perceived Control |
5.8; 6.1; 5.6; 5.8; 5.6; 6.2 | 0.05 |
| SECONDARY Theory of Planned Behavior Questionnaire - Intention |
6.2; 6.3; 5.9; 6.4; 5.7; 6.3 | 0.05 |
Summary
Physical activity is an essential first-line treatment for patients with knee osteoarthritis (OA). However, only 13% of patients meet the activity recommendation of 150 minutes or more per week. The primary goal of this randomized controlled trial is to assess the efficacy of a Fitbit Flex (a wireless physical activity tracking device) paired with a new application, plus a brief education session and telephone counselling by a physiotherapist (PT), to improve physical activity and reduce sedentary time in patients with knee osteoarthritis.
Eligibility Criteria
Inclusion Criteria
- Have a physician confirmed diagnosis of knee osteoarthritis OR are both 1) over 50, and 2) have experienced 4 weeks of pain, aching, or discomfort in or around the knee during the last year (equal to or more than 28 separate or consecutive days).
- Have no previous diagnosis of inflammatory arthritis (e.g., rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis), connective tissue diseases, or gout.
- Have no history of using disease-modifying anti-rheumatic drugs, such as hydroxychloroquine, sulfasalazine, methotrexate, biologic agents (e.g., Humira, Enbrel), or gout medications.
- Have no prior knee arthroplasty, and not on a waiting list for total knee replacement surgery.
- Have no history of acute injury to the knee in the past 6 months.
- Have not had surgery in the back, hip, knee, or ankle joints in the past 12 months.
- Have an email address and use online/mobile applications.
- Are able to attend one 1.5-hour education session.
Exclusion Criteria
- Have received a hyaluronate injection in a knee in the last 6 months.
- Have received a steroid injection in a knee in the last 6 months.
- Are at risk when exercising, as identified by the Physical Activity Readiness Questionnaire.
Data sourced from ClinicalTrials.gov (NCT02585323). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.