Physical Activity Levels May Start Tailing Off At Age 7: Study

The study also questions the concept of the adolescent girl as a priority for research and policy efforts in physical activity.

London: Physical activity may start tailing off as early as age seven and not during adolescence as is widely believed, according to new study.

The study conducted at the University of Strathclyde in the UK also found that there is no evidence to indicate that the decline is greater among girls than boys.

The long-term study states that the prevailing view among policy makers and health professionals is that physical activity levels during childhood are adequate, but fall sharply during adolescence – with the decline is significantly greater among girls.

According to the research, there is actually very little firm evidence to back this up and what research has been carried out in this area has mostly been done before the impact of new technologies would have been felt.

“Our study has found that all the boys and girls we assessed were taking paths which were inconsistent with the orthodox view that physical activity begins to decline at adolescence, declines much more rapidly at adolescence or declines much more rapidly in adolescent girls than boys,” said professor John Reilly of Strathclyde’s School of Psychological Sciences and Health, who led the study.

“We did not set out to examine the reasons behind the changes, but finding out why around one in five of the boys managed to maintain levels of moderate to vigorous physical activity throughout the study period might help to inform future policy and practice,” Reilly said.

The study also questions the concept of the adolescent girl as a priority for research and policy efforts in physical activity.

“Future research and public health policy should focus on preventing the decline in physical activity, which begins in childhood, not adolescence, and providing an improved understanding of the determinants of the different physical activity trajectories, including an understanding of the relative importance of biological and environmental influences,” Reilly said.

To quantify the timing of any changes, the researchers tracked the physical activity levels of a representative sample of around 400 children.

These children took part in the Gateshead Millennium Cohort Study in North East England between 2006 and 2015.

Physical activity levels were measured when the children were aged seven, nine, 12 and 15, using a small lightweight portable monitor, the Actigraph, worn for seven days at a
time.

Overall, the total volume of physical activity fell from the age of seven onwards in both boys and girls during this time, with declines no steeper during adolescence than in earlier childhood.

Published in the British Journal of Sports Medicine, the study is observational and firm conclusions cannot be drawn from it about cause and effect.

(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)

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