Do physical activity and sedentary time mediate the association of the perceived environment with BMI? The IPEN adult study.

ABSTRACT: The study's main aim was to examine whether adults' accelerometer-based physical activity and sedentary time mediated the associations of neighbourhood physical environmental perceptions with body mass index (BMI) and weight status across 10 high- and middle-income countries. Data from the IPEN Adult study, an observational multi-country study (n = 5712) were used. Results showed that sedentary time was a non-significant or inconsistent mediator in all models. MVPA mediated the associations of street connectivity, land use mix-diversity, infrastructure/safety for walking and aesthetics with BMI in single models. In the multiple model, MVPA only fully mediated the relation between land use mix-diversity and BMI. This finding was replicated in the models with weight status as outcome. MVPA p

SUBMITTER: Van Dyck D 

PROVIDER: S-EPMC7447836 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature