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      Physical activity, exercise, and physical fitness: definitions and distinctions for health-related research.

      , ,
      Public health reports (Washington, D.C. : 1974)

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          Abstract

          "Physical activity," "exercise," and "physical fitness" are terms that describe different concepts. However, they are often confused with one another, and the terms are sometimes used interchangeably. This paper proposes definitions to distinguish them. Physical activity is defined as any bodily movement produced by skeletal muscles that results in energy expenditure. The energy expenditure can be measured in kilocalories. Physical activity in daily life can be categorized into occupational, sports, conditioning, household, or other activities. Exercise is a subset of physical activity that is planned, structured, and repetitive and has as a final or an intermediate objective the improvement or maintenance of physical fitness. Physical fitness is a set of attributes that are either health- or skill-related. The degree to which people have these attributes can be measured with specific tests. These definitions are offered as an interpretational framework for comparing studies that relate physical activity, exercise, and physical fitness to health.

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          Author and article information

          Journal
          Public Health Rep
          Public health reports (Washington, D.C. : 1974)
          0033-3549
          0033-3549
          March 1 1985
          : 100
          : 2
          Article
          10.2307/20056429
          1424733
          3920711
          3afff329-4ef5-4f62-91f4-d4814858fd0b
          History

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