Next Article in Journal
Non-Small Cell Lung Cancer beyond Biomarkers: The Evolving Landscape of Clinical Trial Design
Next Article in Special Issue
mHealth for Smoking Cessation Programs: A Systematic Review
Previous Article in Journal
Re-Treatment with EGFR-TKIs in NSCLC Patients Who Developed Acquired Resistance
Previous Article in Special Issue
Human Centred Design Considerations for Connected Health Devices for the Older Adult
Open AccessReview

A Systematic Review and Meta-Analysis of Mobile Devices and Weight Loss with an Intervention Content Analysis

MPhil Public Health, BA Health Science, Department of Public Health, Cambridge University, Cambridge CB3 OBN, UK
J. Pers. Med. 2014, 4(3), 311-385;
Received: 17 February 2014 / Revised: 28 May 2014 / Accepted: 28 May 2014 / Published: 30 June 2014
(This article belongs to the Special Issue Mobile Health)
Introduction: Overweight and obesity constitute leading global public health challenges. Tackling overweight and obesity by influencing human behaviour is a complex task, requiring novel emerging health psychology interventions. The aims of this review will be to determine whether mobile devices induce weight loss and improvements in diet and physical activity levels when compared with standard controls without a weight loss intervention or controls allocated to non-mobile device weight loss interventions. Methods: A systematic review on mobile devices and weight loss was conducted. The inclusion criteria were all randomized controlled trials with baseline and post-intervention weight measures in adult subjects >18 years of age without pre-specified co-morbidities. Mobile device specifications included modern, portable devices in the form of smartphones, PDAs, iPods, and Mp3 players. Cohen’s d for standardized differences in mean weight loss was calculated. A random effects meta-analysis was generated using Comprehensive meta-analysis software. Theories and intervention content were coded and analysed. Results: A total of 17 studies were identified, of which 12 were primary trials and 5 were secondary analyses. The meta-analysis generated a medium significant effect size of 0.430 (95% CI 0.252–0.609) (p-value ≤ 0.01), favouring mobile interventions. Throughout the systematic review, mobile devices were found to induce weight loss relative to baseline weight. When comparing them with standard no intervention controls as well as controls receiving non-mobile weight loss interventions, results favoured mobile devices for weight loss. Reductions in Body mass index, waist circumference, and percentage body fat were also found in the review. Improvements in the determinants of weight loss in the form of improved dietary intake and physical activity levels were also found. Theory appears to largely inform intervention design, with the most common theories being Social Cognitive Theory, Elaboration Likelihood Theory, Control Theory, and Goal Theory. The use of behavioural change techniques was widespread across the studies, with a minimum of five per intervention. Conclusion: Mobile devices appear to induce positive changes in the behavioural determinants of weight and subsequently are associated with weight loss. Mobile device interventions are heavily informed by theory and behaviour change techniques. The use of theory appears to effectively enhance levels of constructs targeted by interventions. View Full-Text
Keywords: mobile health; mobile devices; obesity; weight loss; RCTs mobile health; mobile devices; obesity; weight loss; RCTs
Show Figures

Figure 1

MDPI and ACS Style

Lyzwinski, L.N. A Systematic Review and Meta-Analysis of Mobile Devices and Weight Loss with an Intervention Content Analysis. J. Pers. Med. 2014, 4, 311-385.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

Only visits after 24 November 2015 are recorded.
Back to TopTop