Age-related change in children's physical activity and sedentary time: The International Children's Accelerometry Database (ICAD).

ABSTRACT:

Background

Many young people fail to achieve the minimum recommended amount of physical activity to benefit their health. Understanding the nature of age-related changes in behaviour and how this varies for population sub-groups is informative for intervention design. The aim of this study was to describe age-related changes in physical activity and sedentary time and examine variability in patterns of change across demographic sub-groups.

Methods

Data are from 13 studies in the International Children's Accelerometry Database (ICAD), all of which provided ≥2 waves of waist-worn accelerometer data. Annual change in sedentary time, light intensity physical activity (LPA) and moderate to vigorous intensity physical activity (MVPA) were estimated using three level mixed effects

SUBMITTER: Atkin AJ 

PROVIDER: S-EPMC12422510 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature