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 (pertaining to chest pain and discomfort during physical activity, dizziness or light headedness, or frequent falls and use of assistive devices)
• Not currently using a weight loss medication (medications for diabetes management are permitted if weight stable)
• Approved for participation by medical director
• Willing to provide informed consent and agree to all study procedures and assessments.