Results: A total of 17 studies were identified, of which 12 were primary trials and 5 were secondary analyses. Theories and intervention content were coded and analysed. A random effects meta-analysis was generated using Comprehensive meta-analysis software. Cohen’s d for standardized differences in mean weight loss was calculated. Mobile device specifications included modern, portable devices in the form of smartphones, PDAs, iPods, and Mp3 players. 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. Methods: A systematic review on mobile devices and weight loss was conducted. 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. Tackling overweight and obesity by influencing human behaviour is a complex task, requiring novel emerging health psychology interventions. Introduction: Overweight and obesity constitute leading global public health challenges.
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