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Reducing sedentary time using an innovative mHealth intervention among patients with total knee replacement:
Christine A Pellegrini1, Jungwha Lee2, Katherine E DeVivo1
1Technology Center to Promote Healthy Lifestyles, Department of Exercise Science, Arnold School of Public Health, University of South Carolina, 915 Greene Street, Suite 403, Columbia, SC, 29208, USA.
Contemporary Clinical Trials Communications
|July 1, 2021
Summary
This study tested a mobile health app to reduce sedentary time after knee replacement surgery. The intervention aims to decrease sitting duration, improving outcomes for patients undergoing total knee arthroplasty.
Area of Science:
- Orthopedics
- Digital Health
- Rehabilitation Medicine
Background:
- Knee replacement improves pain and function but not physical activity.
- High sedentary time post-surgery increases risks for poor function and disability.
- Reducing sedentary behavior may be a feasible initial approach for knee replacement patients.
Purpose of the Study:
- To evaluate a mobile health (mHealth) intervention for reducing sedentary time.
- To assess the intervention's effectiveness at 3 and 6 months post-knee replacement surgery.
Main Methods:
- 92 patients undergoing knee replacement were randomized 4 weeks post-surgery.
- Intervention group used the NEAT!2 app to interrupt prolonged sitting, with coaching calls.
- Control group received an education app and non-intervention calls.
Main Results:
- Data collection occurred pre-operatively and at 3 and 6 months post-surgery.
- The study will determine if the mHealth intervention decreases sedentary time.
Conclusions:
- This study assesses a novel, remotely delivered mHealth intervention.
- Results will indicate the efficacy of reducing sedentary time in adults post-knee replacement.

