Cited by 400Mobile Health and mHealth ApplicationsPhysical Activity and HealthContext-Aware Activity Recognition Systems

Do smartphone applications and activity trackers increase physical activity in adults? Systematic review, meta-analysis and metaregression

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Laranjo, Liliana, Ding, Ding, Heleno, Bruno, Kocaballi, Baki, Quiroz, Juan C, Tong, Huong Ly, Chahwan, Bahia, Neves, Ana Luisa +7 more·2021·British Journal of Sports Medicine

Abstract

Objective: To determine the effectiveness of physical activity interventions involving mobile applications (apps) or trackers with automated and continuous self-monitoring and feedback. Design: Systematic review and meta-analysis. Data sources: PubMed and seven additional databases, from 2007 to 2020. Study selection: Randomised controlled trials in adults (18–65 years old) without chronic illness, testing a mobile app or an activity tracker, with any comparison, where the main outcome was a physical activity measure. Independent screening was conducted. Data extraction and synthesis: We conducted random effects meta-analysis and all effect sizes were transformed into standardised difference in means (SDM). We conducted exploratory metaregression with continuous and discrete moderators identified as statistically significant in subgroup analyses. Main outcome measures: Physical activity: daily step counts, min/week of moderate-to-vigorous physical activity, weekly days exercised, min/week of total physical activity, metabolic equivalents. Results: Thirty-five studies met inclusion criteria and 28 were included in the meta-analysis (n=7454 participants, 28% women). The meta-analysis showed a small-to-moderate positive effect on physical activity measures (SDM 0.350, 95% CI 0.236 to 0.465, I 2 =69%, T 2 =0.051) corresponding to 1850 steps per day (95% CI 1247 to 2457). Interventions including text-messaging and personalisation features were significantly more effective in subgroup analyses and metaregression. Conclusion: Interventions using apps or trackers seem to be effective in promoting physical activity. Longer studies are needed to assess the impact of different intervention components on long-term engagement and effectiveness.

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  1. 053 Multivariate metaregression models with statistically significant moderators identified in subgroup analyses, a dichotomous variable representing studies where the app or tracker was the only difference between intervention and control, and continuous moderators (number of BCTs in the intervention, retention rate and study duration). Statistically significant moderators were kept in successive models. R 2 was calculated to determine the proportion of total between-study variance explained by the model. Italicised numbers correspond to statistically significant p values. *Goals and planning: studies where the intervention includes BCTs in this category. †Text messaging: studies where the intervention includes text messaging. ‡Personalisation: studies mentioning personalisation in the intervention. §Conflicts of interest: studies where the authors mention conflicts of interest. ¶Graded tasks: studies where the intervention included this BCT. **Behaviour change theories: studies mentioning use of behaviour change theories. † †Reference for all dichotomous variables: remaining studies. ‡ ‡Retention rate: retention rate in the intervention group (continuous variable). BCT, behaviour change technique. on May 17, 2021 by guest. Protected by copyright. http://bjsm.bmj.com/ Br J Sports Med: first published as 10.1136/bjsports-2020-102892 on 21 December 2020. Downloaded from REFERENCES
  2. Ekelund U, Tarp J, Steene-Johannessen J, et al. Dose-Response associations between accelerometry measured physical activity and sedentary time and all cause mortality: systematic review and harmonised meta-analysis. BMJ 2019;366:l4570. · DOI · Paper page
  3. Higgins J, Green S. Cochrane Handbook for systematic reviews of interventions. Chichester: John Wiley & Sons, 2011.
  4. Guyatt GH, Oxman AD, Vist GE, et al. Grade: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ 2008;336:924-6. · DOI · Paper page
  5. Global mobile consumer survey: UK cut | plateauing at the peak. The state of the smartphone. Deloitte 2019. 88 Global mobile consumer survey: US edition | a new era in mobile continues. Deloitte 2018.

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Authors
Laranjo, L., Ding, D., Heleno, B., Kocaballi, B., Quiroz, J. C., Tong, H. L., Chahwan, B., Neves, A. L., Gabarron, E., Dao, K. P., Rodrigues, D., Neves, G. C., Antunes, M. L., Coiera, E., & Bates, D. W.
Affiliations
  • The University of Sydney (AU)
  • Universidade Nova de Lisboa (PT)
  • UNSW Sydney (AU)
  • Macquarie University (AU)
  • Brigham and Women's Hospital (US)
Corresponding author
Laranjo, Liliana
Venue
British Journal of Sports Medicine
Publisher
BMJ
Published
2020-12-21
Volume
55
Issue
8
Pages
422-432
ISSN
  • 0306-3674 (ISSN-L)
  • 1473-0480
OpenAlex
W3113845499
Cited by
400
References
91
Citations by year
2026: 55 · 2025: 80 · 2024: 102 · 2023: 54 · 2022: 75 · 2021: 34
FWCI
7.77
Type
journal article
Language
en
Open access
Locations
  • British Journal of Sports Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by-nc-nd)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by)
  • Repository of Digital Objects for Teaching Research and Culture (University of Valencia) (submittedVersion, other-oa)
  • Zenodo (CERN European Organization for Nuclear Research) (cc-by)
Funders
National Health and Medical Research Council (APP1134919)
Topics
  • Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
Keywords
mobile health apps, wearable activity trackers, physical activity promotion, self-monitoring, feedback, step count, moderate-to-vigorous physical activity, text messaging, personalization, adults
MeSH terms
Smartphone, Fitness Trackers, Adult, Feedback, Humans, Regression Analysis, Health Behavior, Exercise, Mobile Applications

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