A Mobile Intervention to Reduce Pain and Improve Health-III
Aims: Aim 1: To investigate the impact of the MORPH intervention on steps, weight change, pain interference, and physical function at month 18. Aim 2: If the MORPH intervention results in reduced pain interference at 6 and/or 18 months, the investigators will examine the extent to which 6-month change in steps, weight, pain self-efficacy, and catastrophizing mediate change in interference at 6 and/or 18 months.
• Aged 65+ years
• Body mass index of 30-45 kg/m2 or \>45 kg/m2 with physician's approval
• No loss or gain of more than 5% body mass in previous 6 months
• Presence of knee or hip osteoarthritis as ascertained via the Roux questionnaire
• Independently living
• Low active (i.e., not participating in regular resistance training and/or \>20 mins/day of aerobic exercise on more than 2 days/week in past 3 months as ascertained via a modified CHAMPS questionnaire)
• Have no contraindication for safe and optimal participation in exercise based on EASY screening
• Not currently using a weight loss medication
• Approved for participation by medical director
• Willing to provide informed consent and agree to all study procedures and assessments.