%0 Journal Article 
%A Grao Cruces, Alberto
%A Velázquez Romero, María J.
%A Rodríguez Rodríguez, Fernando
%T Levels of Physical Activity during School Hours in Children and Adolescents: A Systematic Review
%D 2020
%@ 1660-4601
%U http://hdl.handle.net/10498/23554
%X Background: This systematic reviewdetermines the levels of physical activity (PA) during school
hours in children and adolescents.Methods: Studies carried out fromJanuary 1987 toDecember 2019were
retrieved from four databases (Web of Science, Pubmed, Scopus and SportDiscus). Results: Twenty-nine
studies were included in this systematic review. Most of them used accelerometers and showed that male
and female children accumulated a mean of between 14 and 68 min of moderate-to-vigorous PA (MVPA)
during school hours (3–22% of this daily segment), andmale and female adolescents accumulated amean
of between 13 and 28min ofMVPA during this daily segment (3–8% of the school hours). Less than a
quarter of children and adolescents reached the recommended 30 min of MVPA during school hours,
with notable differences between sexes. Conclusions: These results suggest that the levels of PA during
school hours are not enough, and consequently, schools should develop strategies for helping children
and adolescents reach the school PA recommendation.
%K primary education
%K secondary education
%K school schedule
%K recommendations
%K students
%~ Universidad de Cádiz