Objective To systematically review and meta-analyse how physical activity (PA) changes
from adolescence to early adulthood (13–30 years). Data sources Seven electronic …

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

Background and aim There is a widely held and influential view that physical activity begins
to decline at adolescence. This study aimed to identify the timing of changes in physical …

Sleep is an essential human function but its regulation is poorly understood. Using
accelerometer data from 85,670 UK Biobank participants, we perform a genome-wide …

The aim was to develop sedentary (sitting/lying) thresholds from hip and wrist worn raw tri‐
axial acceleration data from the ActiGraph and GENEActiv, and to examine the agreement …

Background Physical activity and sedentary behaviour in youth have been reported to vary
by sex, age, weight status and country. However, supporting data are often self-reported …

Background To know how moderate-to-vigorous physical activity (MVPA) and sedentary
time change across lifespan periods is needed for designing successful lifestyle …

Objective To describe levels of physical activity, sedentary time and adherence to Chief
Medical Officers (CMO) physical activity guidelines among primary school-aged children …

Background Low levels of physical activity and high time spent in sedentary activities have
been associated with unfavourable health outcomes in adolescents. During adolescence …

OBJECTIVES: Physical activity (PA) is presumed to decline during childhood and
adolescence, but only few long-term studies about PA development during this period of life …