Later sleep timing predicts accelerated summer weight gain among elementary school children: a prospective observational study.

ABSTRACT:

Objectives and background

Social demands of the school-year and summer environment may affect children's sleep patterns and circadian rhythms during these periods. The current study examined differences in children's sleep and circadian-related behaviors during the school-year and summer and explored the association between sleep and circadian parameters and change in body mass index (BMI) during these time periods.

Methods

This was a prospective observational study with 119 children ages 5 to 8 years with three sequential BMI assessments: early school-year (fall), late school-year (spring), and beginning of the following school-year in Houston, Texas, USA. Sleep midpoint, sleep duration, variability of sleep midpoint, physical activity, and light exposure were estimated usi

SUBMITTER: Moreno JP 

PROVIDER: S-EPMC8273994 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature