Abstract MP28: Associations Of Adverse Childhood Family Environment With Adult Sedentary Behavior And Physical Activity: The Coronary Artery Risk Development In Young Adults (CARDIA) Study

Abstract

Introduction: Adverse family environment (AFE) in childhood may have deleterious health effects; however, whether these exposures relate to health promoting behaviors in adulthood is unknown. We hypothesize that AFE in childhood will be associated with higher sedentary behavior (SED), and lower light- (LPA) and moderate-to-vigorous (MVPA) physical activity in adulthood and that associations will be moderated by social network size or social support. Methods: This was an analysis of 2,127 CARDIA study participants. AFE in childhood was self-reported in year 15 (2000-2001) and categorized as low, moderate, or high adversity using a 7-item questionnaire. Average SED, LPA, and MVPA (min/day) were measured using year 20 (2005-2006) accelerometry data and exercise units/day of MVPA was self-reported. Linear regression models examined associations of AFE in childhood with accelerometer measured SED, LPA, MVPA and self-reported MVPA in adulthood. We further tested for interactions between AFE and adult social network size or social support with each activity outcome and stratified analyses if interactions were p<0.10. Results: Participants were 57% female and 45.3 ± 3.5 years of age. High AFE (versus low) was only associated with lower SED (ß: -10.72 min/day, p=0.039). Interaction analyses identified a significant social network x AFE interaction with SED and social support x AFE interaction with self-reported MVPA. In stratified analyses, those with small social network and high AFE had lower SED (ß: -17.99 min/day, p=0.015) compared small social network and low AFE. Those with high social support and high AFE had significantly lower self-reported MVPA (ß: -44.74 exercise units/day, p=0.026) compared to high social support and low AFE (Table). Conclusions: In conclusion, high AFE, among those with a small social network, was related to lower SED and among those with high social support, lower self-reported MVPA. These data are hypothesis generating as associations were in unexpected directions.