Promoting Changes in Obesogenic Behaviors: Does Coworker Social Support Play a Role?

Abstract Purpose : To examine the association between worksite social support and changes in diet, physical activity, and body mass index (BMI). Design : Cohort analysis of an underlying randomized, controlled weight gain prevention worksite trial: Promoting Activity and Changes in Eating. Setting : The trial occurred in the greater Seattle area. Subjects : Baseline and follow-up data were obtained on a nested cohort of employees (n = 958-1078) from 33 small- to medium-sized worksites. Measures : Worksite social support, diet, physical activity, and BMI measures were assessed using a self-reported questionnaire. Analysis : To adjust for multilevel data and multiple time points, we used generalized estimating equations and logistic mixed models. Results : Higher baseline worksite social support was associated with greater changes in fruit and vegetable intake (p = .001; summary food-frequency questions). Conclusion : This study does not support a conclusive relationship between worksite social support and health behavior change.