Improving physical activity after knee replacement surgery

Knee Arthroplasty Activity Trial (KArAT)

NIH-funded research Brigham and Women's Hospital · NIH-10913533

This study is looking at ways to help people who have had knee replacement surgery get moving more by using friendly phone coaching and some financial rewards to encourage them to stay active during their recovery.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionBrigham and Women's Hospital NIH-funded
Lab location1 site (Boston, United States)
Project IDNIH-10913533 on NIH RePORTER

What this research studies

This research investigates how to enhance physical activity levels in patients who have undergone total knee replacement (TKR) for knee osteoarthritis. It focuses on using behavioral strategies, including telephonic active coaching and financial incentives, to motivate patients to engage in sustained physical activity during their recovery. By addressing both psychological and economic factors, the study aims to help patients overcome barriers to exercise and improve their overall health outcomes post-surgery.

Who could benefit from this research

Good fit: Ideal candidates for this research are adults who are scheduled to undergo total knee replacement surgery due to symptomatic knee osteoarthritis.

Not a fit: Patients who are not undergoing knee replacement surgery or those with conditions that prevent them from participating in physical activity may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to improved physical activity levels and better recovery outcomes for patients after knee replacement surgery.

How similar studies have performed: Previous research has shown that behavioral interventions can effectively increase physical activity levels in various patient populations, suggesting potential success for this approach.

Where this research is happening

Boston, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.