The study, published
in The Lancet Child & Adolescent Health journal and
produced by researchers from the World Health Organization (WHO), finds that
more than 80% of school-going adolescents globally did not meet current
recommendations of at least one hour of physical activity per day – including
85% of girls and 78% of boys.
The study – which is
based on data reported by 1.6 million 11 to 17-year-old students – finds that
across all 146 countries studied between 2001-2016 girls were less active than
boys in all but four (Tonga, Samoa, Afghanistan and Zambia).The assessment
included all types of physical activity, such as time spent in active play,
recreation and sports, active domestic chores, walking and cycling or other
types of active transportation, physical education and planned exercise.
The authors say that
levels of insufficient physical activity in adolescents continue to be
extremely high, compromising their current and future health. “Urgent policy
action to increase physical activity is needed now, particularly to promote and
retain girls’ participation in physical activity,” says study author Dr Regina
Guthold, WHO.
The health benefits of
a physically active lifestyle during adolescence include improved
cardiorespiratory and muscular fitness, bone and cardiometabolic health, and
positive effects on weight. There is also growing evidence that physical
activity has a positive impact on cognitive development and socializing.
Current evidence suggests that many of these benefits continue into adulthood.
To achieve these
benefits, the WHO recommends for adolescents to do moderate or vigorous
physical activity for an hour or more each day.