Introduction
weight loss
SECONDARY, POSITIVE
Lifestyle changes, including increased physical activity, are important to optimize post-operative outcomes of bariatric surgery. Positive relationships between post-operative exercise and weight loss have been shown in systematic reviews of observational studies [While studies using self-reported measures of physical activity have suggested that patients increase their physical activity the first year after surgery [Interventions targeted towards increasing physical activity in patients following bariatric surgery show mixed results, but seem to facilitate positive changes according to a recent review [The aim of this study was to evaluate the effect of physical activity intervention delivered via the PromMera smartphone application, on objectively measured moderate-to-vigorous physical activity (primary outcome) and inactivity, light physical activity, body mass index, and percent total weight loss (secondary outcomes) after bariatric surgery.