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High-Intensity Training May be Better than Endurance Training for Preventing Heart Disease Featured

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Hit_TrainingWhen it comes to getting in shape, all exercise is the same, right? Not according to a new exercise study out of Scotland.

The researchers found that high-intensity training (HIT)  exercise may be better than endurance training for preventing cardiovascular disease.

The findings, published April 5 in the American Journal of Human Biology, suggest that brief, intense workouts offer a time-efficient way to reduce cardiovascular disease risk factors in teens, said study author Duncan Buchan, of the University of the West of Scotland, and his colleagues.

High-intensity Training (HIT) May Prevent Heart Disease

The study included 57 adolescent schoolchildren (47 boys and 10 girls) who were randomly assigned to high-intensity training (HIT) or moderate-intensity exercise groups.

Both groups did three exercise sessions a week for seven weeks. The high-intensity training (HIT) group's program consisted of a series of 20-meter sprints over 30 seconds, while the children in the moderate-intensity training (HIT)  group ran steadily for 20 minutes.

By the end of the seven weeks, teens in the moderate-intensity group had completed a total of 420 minutes of exercise, compared to 63 minutes for those in the high-intensity training (HIT) group.

Estimated total energy expenditures per child were 4,410 kcal for those in the moderate-intensity training (HIT) group and 907.2 kcal for those in the high-intensity training (HIT) group.

Both groups of children showed significant improvements in body composition, cardio-respiratory fitness, blood pressure, and insulin resistance. But the teens in the high-intensity group achieved those health benefits with only 15% of the exercise time put in by those in the moderate-intensity group.

Further research is needed, since the study was a small study.

SOURCE: American Journal of Human Biology, news release, April 5, 2011

Last modified on Saturday, 11 August 2012 12:18
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