iSTEP - an mHealth Physical Activity and Diet Intervention for Persons With HIV

Open to people ages 18 years and up

• ability to provide informed consent
• HIV infection documented at the University of California, San Diego (UCSD) HIV Neurobehavioral Research Program (HNRP) or assessed by an HIV test at screening
• proficient in English
• physically capable of participating in moderate PA as screened by the Physical Activity Readiness Questionnaire
• consent from primary care physician to participate in the study
• able to consume walnuts - no nut allergies

• any physical conditions that would prevent moderate physical activity or where moderate physical activity would represent a health risk for the individual, including a history of myocardial infarction or stroke
• unwillingness or inability to participate in daily text messaging
• tree nut allergy that would prevent walnut consumption or other food restrictions that would prevent participation in the Mediterranean-style diet intervention (e.g., unable to eat fish or use olive oil for cooking).