MActive: A Randomized Clinical Trial of an Automated mHealth Intervention for Physical Activity Promotion.

ABSTRACT:

Background

We hypothesized that a fully automated mobile health (mHealth) intervention with tracking and texting components would increase physical activity.

Methods and results

mActive enrolled smartphone users aged 18 to 69 years at an ambulatory cardiology center in Baltimore, Maryland. We used sequential randomization to evaluate the intervention's 2 core components. After establishing baseline activity during a blinded run-in (week 1), in phase I (weeks 2 to 3), we randomized 2:1 to unblinded versus blinded tracking. Unblinding allowed continuous access to activity data through a smartphone interface. In phase II (weeks 4 to 5), we randomized unblinded participants 1:1 to smart texts versus no texts. Smart texts provided smartphone-delivered coaching 3 times/day aimed a

SUBMITTER: Martin SS 

PROVIDER: S-EPMC4845232 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature