“…Some studies used technology to deliver prompts such as reminders to exercise, track movement or encouragement to continue. More specifically, studies sent e-mails (32,33,37,43,50,51,53,55,58,61,65,66,69,74,80,83,86,88), regular text messages (29,33,52,54,57,(61)(62)(63)84) and/or made regular telephone calls (30, [38][39][40]44,48,50,51,62,67,68,77,88). Many of the interventions were designed using health behaviour obesity reviews theories, with Social Cognitive Theory (30, 36,37,40,[43][44][45]47,51,53,56,…”