Exercise may help teens boost their grades

LONDON/PTI Updated Tue, 22 Oct 2013 04:07 PM IST
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Exercise may help teens boost their grades

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Girls, want to do better in science? Get some exercise!
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Regular moderate to vigorous exercise improves academic performance in teens, and particularly seems to help girls do better in science, a new study has found.
The improvements were sustained over the long term, with the findings pointing to a dose-response effect - the more intensive exercise was taken, the greater the impact on test results, researchers said.
The findings are based on a representative sample of almost 5000 children who were all part of the Children of the 90s study, also known as the Avon Longitudinal Study of Parents and Children (ALSPAC).

This is tracking the long term health of around 14,000 children born in the UK between 1991 and 1992 in the South West of England.

The duration and intensity of the children''s daily physical activity levels were measured for periods of between three and seven days, when they were aged 11, using a device called an accelerometer, worn on an elasticated belt.

The accelerometer showed that the average daily number of minutes of moderate to vigorous exercise the 11 year olds clocked up was 29 for boys and 18 for girls - significantly less than the recommended 60 minutes.

The children''s academic performance in English, maths, and science was then formally assessed at the ages of 11, 13 and 15/16.

The analysis showed that at the age of 11, better academic performance across all three subjects was linked to the amount of moderate to vigorous physical activity undertaken. Physical activity benefited girls'' performance in science, in particular.

Academic performance at the age of 13 was similarly linked to how much moderate to vigorous exercise pupils had had at the age of 11.

By the age of 15/16 exam results also showed a link to exercise, with an increase in performance for every additional 17 minutes/day (boys) and 12 minutes/day (girls) spent doing more intensive exercise at the age of 11. Once again, girls'science results seemed to benefit the most, researchers said.

“If moderate to vigorous physical activity does influence academic attainment this has implications for public health and education policy by providing schools and parents with a potentially important stake in meaningful and sustained increases in physical activity,” the authors wrote in the study published in the British Journal of Sports Medicine.
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