NIH-funded research U01 cooperative agreement

Osteoarthritis Prevention in Women: Weight Loss and Exercise to Keep Knees Healthy

Official title: The Osteoarthritis Prevention Study (TOPS)

Funded at Wake Forest University · NIH-11380726 · Data updated 2026-11-12

A big study is testing whether a combined plan of weight loss, exercise, and staying with the plan can prevent knee arthritis in women aged 50 and older who are overweight.

More Osteoarthritis research and trials

Quick facts

Grant typeU01 cooperative agreement
Study typeNIH-funded research
Funding institutionWake Forest University
NIH-funded
Lab location1 site (Winston-Salem, United States)
Project startAugust 10, 2023
Project endJuly 31, 2028
Funding year2026
Award (this year)$2,670,047
NIH project number5U01AR082121-04
Project IDNIH-11380726 on NIH RePORTER

Who could benefit from this research

Could help

Women aged 50 and older with overweight or obesity who have little or no knee pain and are willing to participate in diet and exercise programs.

Less likely to help

Individuals who cannot participate in a weight-loss or exercise program or who already have advanced knee OA may not benefit.

What this research studies

This multi-site trial will enroll women 50+ with obesity but little to no knee pain to see if a structured program of diet, physical activity, and weight maintenance can prevent knee osteoarthritis. Participants will follow a non-drug, non-surgical intervention and will be compared to an attention-control group to measure structural changes in the knee, symptoms, and underlying mechanisms. The study builds on strong evidence that weight loss benefits knee joints and aims to prove whether sustained lifestyle changes can stop or slow OA before it starts. It involves several sites across the U.S. and Australia, and will also evaluate cost-effectiveness of the approach. If successful, this could inform guidelines for OA prevention in at-risk populations, especially in women.

Why it matters

Potential benefit: If successful, patients could gain a proven, non-pharmacologic strategy to lower the risk of developing knee OA.

How similar studies have gone: Previous evidence supports weight loss and exercise reducing knee OA risk and symptoms, and this trial tests a comprehensive, multi-site approach.

Where this research is happening

  • Wake Forest University
    Winston-Salem, United States
    Active

Researchers

  • Principal investigator: Messier, Stephen P — Wake Forest University
  • Study coordinator: Messier, Stephen P

Related research

Other NIH-funded projects on the same topics.

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.
Last reviewed 2026-11-15 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.