Changes in time-segment specific physical activity between ages 10 and 14 years: A longitudinal observational study.

ABSTRACT:

Objectives

Describe (1) time-segment specific changes in physical activity (PA) into adolescence, (2) differences in change in PA between specific time-segments (weekdays-weekends, in-school-out-of-school, out-of-school-weekends, lesson-time-lunch-time), and (3) associations of change in time-segment specific with overall PA.

Design

Longitudinal observational study (4-year follow-up).

Methods

Children from the SPEEDY study (n=769, 42% boys) had PA measured by accelerometer for at least three days at ages 10.2±0.3, 11.2±0.3 and 14.3±0.3years. Changes in moderate-to-vigorous PA (ΔMVPA, minutes ≥2000counts/minute [cpm]) and total PA (ΔTPA, average cpm) during weekdays, weekends, in-school, out-of-school, lesson-times and lunch-times, were tested using three level (age, i

SUBMITTER: Brooke HL 

PROVIDER: S-EPMC4678171 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature