Cited by 267Mobile Health and mHealth ApplicationsPhysical Activity and HealthDigital Mental Health Interventions

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

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

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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 .

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Authors
Martin, S. S., Feldman, D. I., Blumenthal, R. S., Jones, S. R., Post, W. S., McKibben, R. A., Michos, E. D., Ndumele, C. E., Ratchford, E. V., Coresh, J., & Blaha, M. J.
Affiliations
Johns Hopkins University (US)
Corresponding author
Martin, Seth S.
Venue
Journal of the American Heart Association
Published
2015-10-29
Volume
4
Issue
11
ISSN
2047-9980 (ISSN-L)
OpenAlex
W2178720062
Cited by
267
References
35
Citations by year
2026: 10 · 2025: 14 · 2024: 20 · 2023: 29 · 2022: 25 · 2021: 33 · 2020: 37 · 2019: 26 · 2018: 37 · 2017: 22 · 2016: 10 · 2015: 1
FWCI
42.56
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Journal of the American Heart Association (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (UL1TR001079)
  • National Heart, Lung, and Blood Institute (T32 HL 07024, T32HL007024)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Physical Activity and Health
  • Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
Keywords
mobile health, physical activity promotion, automated text messaging, step count goals, behavior change, sedentary adults, real-time feedback
MeSH terms
Adolescent, Adult, Aged, Algorithms, Automation, Cardiovascular Diseases, Counseling, Female, Health Promotion, Health Status, Humans, Health Knowledge, Attitudes, Practice, Male, Middle Aged, Motivation, Motor Activity, Pilot Projects, Risk Factors, Time Factors, Baltimore, Health Behavior, Exercise, Telemedicine, Risk Reduction Behavior, Cell Phone, Young Adult, Actigraphy, Text Messaging, Mobile Applications

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