Department of Behavioral, Social and Population Health Sciences, University of South Carolina School of Medicine, Columbia, USA.
Department of Family Medicine, Greenville Health System, Greenville, USA.
J Behav Med. 2019 Feb;42(1):162-168. doi: 10.1007/s10865-018-9953-4. Epub 2018 Aug 3.
Behavioral weight loss interventions are often delivered in groups. Group cohesion may enhance program attendance and, thereby, weight loss. In this secondary analysis, our goals were to: (1a) assess whether group cohesion measured early in a behavioral weight loss intervention predicts program attendance and weight loss outcomes and, if so, (1b) explore whether attendance mediates the link between group cohesion and weight loss; (2) characterize the association between change in group cohesion and weight loss throughout the intervention. Veterans (n = 324) initiated a 16-week, group-based behavioral weight loss program involving biweekly in-person group visits. In linear regression models, early group cohesion was unrelated to group attendance or weight loss. Although group cohesion significantly increased during the intervention, this change was not associated with weight loss. These findings are consistent with the limited literature; however, they are inconsistent with theoretical assertions and clinical observations of the influence of group factors on outcomes.
行为减肥干预通常以小组形式进行。群体凝聚力可能会提高项目的出勤率，从而达到减肥的效果。在这项二次分析中，我们的目标是：（1a）评估在行为减肥干预早期测量的群体凝聚力是否可以预测项目的出勤率和减肥效果，如果可以，（1b）探索出勤率是否在群体凝聚力与减肥之间起中介作用；（2）描述整个干预过程中群体凝聚力变化与减肥之间的关系。退伍军人（n=324）参与了一个为期 16 周的、基于小组的行为减肥项目，包括每两周一次的面对面小组访问。在线性回归模型中，早期的群体凝聚力与小组出勤率或体重减轻无关。尽管群体凝聚力在干预过程中显著增加，但这种变化与体重减轻无关。这些发现与有限的文献一致；然而，它们与群体因素对结果的影响的理论观点和临床观察不一致。
