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Abstract Objective Greater perceived social support (PSS) is associated with more favorable changes in weight loss, activity behaviors, and eating regulation after metabolic and bariatric surgery (MBS). However, studies have relied on generic, retrospective PSS measures, and stability of PSS levels and relations with weight loss and weight‐related behaviors over time is unknown. Using smartphone‐based Ecological Momentary Assessment, this study evaluated pre‐to 1‐year post‐MBS changes in daily weight management‐focused PSS and associations with weight loss, device‐measured activity behaviors, and eating regulation before and during the initial year after MBS. Method Adult MBS patients (n = 71) received (1) an accelerometer to measure daily moderate‐to‐vigorous intensity physical activity (MVPA) and sedentary time (ST) minutes/day, and (2) a smartphone to complete morning weight‐focused PSS ratings and eating regulation (dietary restraint/disinhibition) ratings at four semi‐random times daily for 10 days at pre‐ and 3, 6, and 12‐month postoperative. Generalized linear mixed models analyzed the associations of PSS with total weight loss (%TWL) and activity/eating outcomes. Results Participants on average reported relatively stable moderate‐to‐high PSS (3.98 on one to five scale) across assessments. Perceived social support was not related to %TWL, MVPA, or ST. Participants with higher PSS reported lower disinhibition and higher restraint than those with lower PSS (ps |
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