Seasonality of Children's Height and Weight and Their Contribution to Accelerated Summer Weight Gain.

ABSTRACT: Background: While children have been shown to have increased BMI during the summer compared to the school year, it is not known if this may be due to seasonal variations in height or weight separately. Methods: Trained nurses measured heights (cm) and weights (kg) in a cohort of Kindergarteners (n = 7648) twice per year from the beginning of kindergarten through 5th grade. Variation in height and weight by season (school year vs. summer) was examined using separate mixed-effects models. Season, sex, and BMI trajectory group were tested as fixed effects. Random effects included repeated measurements of time, students nested within a school, intercept, and slope for growth over time. Similar models using BMIz as the outcome examined the interaction of height or we

SUBMITTER: Moreno JP 

PROVIDER: S-EPMC9159375 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature