( Experts generally recommend that kids s...)Children Need to Exercise More to Prevent Heart Trouble,Health

Experts generally recommend that kids should get an hour per day of exercise at least to help stave off heart trouble as adults.//

However a new study has suggested that even more activity may be needed.

Lead researcher Lars Bo Andersen, from the Norwegian School of Sports Science, Oslo said, ‘Current guidelines for physical activity in children may underestimate the necessary level for maintaining good health. We would suggest 90 minutes per day to prevent clustering of heart disease risk factors.’

The results of his team's research are published in the July 22 issue of The Lancet.

Andersen's team conducted their study over 1,700 children, aged 9 or 15 years, from schools in Denmark, Portugal and Estonia. The team measured each child's amount of daily activity, and also risk factors for cardiovascular disease, such as weight, blood pressure, waist circumference, insulin resistance, and blood cholesterol.

Andersen's team gave children accelerometers to measure everyday activities such as walking to school and moderate-intensity play.

The accelerometer mostly picked by everyday activities and not high-intensity sports. According to Andersen, "If you think about the changes in physical activity that have happened over the years [and] which may have contributed substantially to the obesity epidemic, it is very likely that the decrease in activity is in mainly free activities."

Following four days of monitoring, Andersen's team found that the combined risk factor score for cardiovascular disease decreased with increase in physical activity. 9-year-olds who did 116 minutes of moderate to vigorous intensity activity and the 15-year-olds who did about 88 minutes daily were found to have the lowest risk factor scores.

Anderson said, "Clustering of heart disease risk factors occurs even in healthy children, and the risk is more than three times higher among sedentary children compared to the phys
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