Background It is presumed that physical activity (PA) level declines during the lifespan,
particularly in adolescence. However, currently, there is no study that quantifies these …

CONTEXT: Data are available on correlates of physical activity in children and adolescents,
less is known about the determinants of change. This review aims to systematically review …

The theoretical components of research are some of the most complicated and challenging
aspects for new researchers to understand. While relevant methodologies are routinely …

CONTEXT: Insufficient physical activity among young people aged 5–18 years is a global
public health issue, with considerable disparities among countries. A systematic review was …

The contribution of this research lies in its dual approach to the question of physical activity
(PA) among adolescents, combining objective measurement of PA by teenagers and a …

Background: Vigorous-intensity physical activity (VPA) may confer superior health benefits
for children compared to moderate-intensity physical activity (MPA), but the correlates of …

OBJECTIVE: We measured physical activity changes among 10-year-old British children
over 12 months and assessed biological and demographic determinants. METHODS …

Despite its recommended use, physical activity promotion in the academic classroom
(PAPAC) has received little attention in terms of the factors that help to facilitate it. In this …

This study examined the developmental patterns and parental correlates of youth leisure-
time physical activity from middle childhood through adolescence. On 5 occasions across 7 …

The aim of this study was to examine the influence of maturity status on primary school
children's physical activity and physical self-perceptions. Altogether, 175 children (97 girls …