Healthy Living After Knee Replacement

Physical Activity and Weight Loss to Improve Function and Pain After Total Knee Replacement

The purpose of this study is to examine if a weight loss program designed for adults after knee replacement improves weight loss, physical activity, pain, and function, as well as if the program is cost effective, as compared to a chronic disease self-management program.

Participants will be randomized to either a weight loss program or chronic disease self-management program. Both programs will be phone-based and include phone calls with a health coach weekly during months 1-4, biweekly during months 5-6, and monthly during months 7-12. Monthly calls with occur between months 13-18. Assessments examining outcomes will be completed at baseline, 6, 12, and 18 months.

Inclusion Criteria:

Participants must:

• have a body mass index between 25-45 kg/m2
• have had a knee replacement (including primary, staged or independent bilateral, or revision) <6 months prior to baseline assessment
• have a computer, tablet, or smartphone with active internet access to self-monitor online and/or have a device or computer compatible with Fitbit
• completion of baseline assessment measures (height, weight, function tests, surveys, ≥4 days valid of activity monitoring, and 1 day of dietary recall)
• be English-speaking and able to read consent and study materials written in English
• be willing to attend 4 in-person assessments.

Exclusion Criteria:

• have any contraindications to diet or weight loss
• undergo simultaneous bilateral knee replacement or have a scheduled or anticipated knee replacement for the contralateral knee within the next 18 months
• have a mobility limiting comorbidity unrelated to knee replacement (e.g. spinal stenosis, fibromyalgia, peripheral vascular disease, stroke)
• are taking anti-obesity medications
• are enrolled in a formal weight loss program
• had or are planning to have bariatric/gastric/lap band surgery
• are planning to relocate out of the Columbia or Greenville, SC areas in the next 18 months.