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- W2178720062 abstract "Background We hypothesized that a fully automated mobile health ( mH ealth) intervention with tracking and texting components would increase physical activity. Methods and Results mA ctive 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 at individual encouragement and fostering feedback loops by a fully automated, physician‐written, theory‐based algorithm using real‐time activity data and 16 personal factors with a 10 000 steps/day goal. Forty‐eight outpatients (46% women, 21% nonwhite) enrolled with a mean± SD age of 58±8 years, body mass index of 31±6 kg/m 2 , and baseline activity of 9670±4350 steps/day. Daily activity data capture was 97.4%. The phase I change in activity was nonsignificantly higher in unblinded participants versus blinded controls by 1024 daily steps (95% confidence interval [ CI ], −580 to 2628; P =0.21). In phase II , participants receiving texts increased their daily steps over those not receiving texts by 2534 (95% CI , 1318 to 3750; P <0.001) and over blinded controls by 3376 (95% CI , 1951 to 4801; P <0.001). Conclusions An automated tracking‐texting intervention increased physical activity with, but not without, the texting component. These results support new mH ealth tracking technologies as facilitators in need of behavior change drivers. Clinical Trial Registration URL : http://ClinicalTrials.gov/ . Unique identifier: NCT01917812 ." @default.
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- W2178720062 date "2015-10-29" @default.
- W2178720062 modified "2023-10-13" @default.
- W2178720062 title "mActive: A Randomized Clinical Trial of an Automated mHealth Intervention for Physical Activity Promotion" @default.
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- W2178720062 doi "https://doi.org/10.1161/jaha.115.002239" @default.
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