Cross-sectional and prospective associations between physical activity, body mass index and waist circumference in children and adolescents.

ABSTRACT:

Objective

To study the cross-sectional and prospective associations between physical activity (PA) of different intensities, body mass index (BMI) and waist circumference (WC) in children and adolescents using isotemporal substitution modelling.

Methods

Physical activity (accelerometry), BMI and WC were assessed in 6- (n = 970), 9- (n = 2,423) and 15-year-olds (n = 1,544) in 2005/2006 and 2011/2012. Participants aged 9 years in 2005/2006 were followed prospectively to 2011/12 (age 15). Associations between PA of different intensities (light, moderate and vigorous), BMI and WC were examined using isotemporal substitution models.

Results

Substituting 10 min per day of sedentary time with light PA was associated with higher WC (0.17 to 0.29 cm, p<

SUBMITTER: Dalene KE 

PROVIDER: S-EPMC5649738 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature