Background Lack of physical activity is a growing problem in China, due to the fast economic
development and changing living environment over the past two decades. The aim of this …

Background The aim of this study was to examine how children's and parents' physical
activity changes from Year 1 (5–6) to Year 4 (8–9 years of age). Methods Data are from the …

Abstract Objective/Background There is a widespread belief that moderate-to-vigorous-
intensity physical activity (MVPA) declines markedly in adolescence, particularly in girls. This …

The aim of this article was to review the literature on the youth predictors of physical activity
in adulthood. The outcome measure in the reviewed studies was the level and types of …

Background Despite global concerns regarding physical inactivity, limited cross-national
evidence exists to compare adolescents' physical activity participation. We analysed data …

Purpose Youth physical activity (PA) levels differ by race/ethnicity and socioeconomic status
(SES). It is well established that various multilevel factors may influence changes in PA. The …

BACKGROUND: Little is known about physical activity (PA) and sedentary behavior
patterning or its impact on long-term PA sustainability, particularly during the critical …

This commentary provides a critical discussion of current research investigating the
correlates and determinants of physical activity in young people, with specific focus on …

Background To date, the scientific literature on socioeconomic correlates and determinants
of physical activity behaviours has been dispersed throughout a number of systematic …

ABSTRACT JANZ, KF, JD DAWSON, and LT MAHONEY. Tracking physical fitness and
physical activity from childhood to adolescence: the Muscatine study. Med. Sci. Sports …