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Res Q Exerc Sport. 1996 Jun;67(2):193-205.

How much physical activity should we do? The case for moderate amounts and intensities of physical activity.

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  • 1Division of Epidemiology and Clinical Applications, Cooper Institute for Aerobics Research in Dallas, Texas, USA. sblair@cooperinst.org

Abstract

A sedentary and unfit way of life leads to increased risk for several chronic diseases and premature mortality. Sedentary and unfit individuals are also more likely to develop functional limitations as they age. The precise type, amount, and intensity of physical activity required for protection needs further investigation. Traditional exercise recommendations suggest a threshold of activity that is necessary for protection, although current evidence does not support a dichotomous view of this issue. Clinical and epidemiological studies show a continuous dose-response gradient of outcome variables across a wide range of activity or fitness levels. Moderate amounts and intensities of physical activity are associated with improved health and reduced risk of morbidity and mortality when compared with low activity or fitness. The major public health emphasis for physical activity recommendations and programming should be to encourage the most sedentary and unfit 20 to 25% of the population to become at least moderately active, and this can yield substantial benefits for the population.

PMID:
8835998
[PubMed - indexed for MEDLINE]
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