Participants
type 2 diabetes, weight loss
MYOCARDIAL INFARCTION, HEART FAILURE, TYPE 2 DIABETES
Participants were 512 healthy, insufficiently active adults aged 18–60 living in eligible neighborhoods, willing to wear a wrist-worn accelerometer and receive daily text messages as part of an mHealth intervention to increase MVPA. Exclusion criteria included history of heart failure, type 2 diabetes, myocardial infarction, contraindications to exercise testing, currently or planning to become pregnant over the course of the study, and participation in other weight loss, diet, or PA programs. Those who planned to move or spend more than 30 days outside the area during the study were also excluded from participation. Insufficiently active status was initially assessed using the International Physical Activity Questionnaire (IPAQ) short form and subsequently confirmed with accelerometry (< 150 min/week of MVPA) during the 9-day baseline. This threshold of activity was chosen as it aligns with national classifications. All participants provided written informed consent and were compensated for completion of baseline ($20) and 12-month ($40) study measures. Participants and investigators were blinded to accumulated MVPA during baseline only; participants received feedback via text on their activity during the intervention based on their assigned intervention group.