Aim To systematically appraise and summarise published evidence on the association
between childhood physical activity (PA) and subsequent age at menarche (AAM). Methods …

Context Across adolescence, there is a notable decline in physical activity in boys and girls.
Maturational timing may be a risk factor for disengagement from physical activity and …

Objective: To examine whether the decline in physical activity observed from childhood
through adolescence is explained by moderating effects of self-efficacy on concurrent …

This study investigates the relationship between baseline puberty hormones, self-reported
physical pubertal status, academic motivation, and academic achievement. Using structural …

Purpose To determine whether naturally-occurring changes in intrinsic motivation,
behavioral regulation, and goals mitigate declining physical activity among adolescents …

Objective: Physical self-concept and moderate-to-vigorous physical activity (MVPA) are
fundamental components of adolescents' health and well-being. Previous research suggests …

The purpose of the present study was to examine if and how the introduction of a flipped
learning (FL) framework in Norwegian lower and upper secondary school physical …

Purpose To examine whether intrinsic motivation and behavioral self-regulation are related
to physical activity during middle school. Method Structural equation modeling was applied …

Purpose The purpose of this study was to study the relationship between motor competence
(MC) and self-esteem in children between 7 and 13 years of age. Methods This is five years …

Research indicates that children and adolescents gradually participate less in physical
activity with age. Several factors are associated with children's physical activity levels, such …