Background Validation of instruments used to measure physical activity patterns is essential when attempting to assess the effectiveness of physical activity interventions. Objectives To assess the ...
Despite extensive use over 40 years, physical activity questionnaires still show limited reliability and validity. Measurements have value in indicating conditions where an increase in physical ...
University of Iowa researchers are recommending all patients be surveyed about their physical activity levels, after a new study underscores the link between physical activity and chronic disease. The ...
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