The development & characteristics of a physical activity questionnaire for epidemiological studies in urban middle class Indians.
A single page physical activity questionnaire was designed for use in epidemiological studies. The questionnaire estimates 24 h energy expenditure as well as components of occupation and discretionary leisure time activities. Estimates of physical activity were highly repeatable, when the questionnaire was re-administered within a 4 wk period (e.g., r = 0.86, P < 0.01 for 24 h energy expenditure). Relative validity was assessed by comparing energy intake (using repeated 24 h dietary recalls) and expenditure (using the physical activity questionnaire) over the same period. A correlate of r = 0.33, P < 0.05 between the two measures compared well with reports from literature. The discriminatory power of the questionnaire was assessed by comparing the physical activity patterns of young (18-30 yr) and older (> 60 yr), free living healthy subjects. The questionnaire provides a tool for the assessment of physical activity patterns of urban middle class Indians, which despite its importance has been inadequately studied so far.
Department of Physiology, St. John's Medical College, Bangalore.
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Bharathi
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Sandhya
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Vaz
D000293:Adolescent; D000328:Adult; D016021:Epidemiologic Studies; D015444:Exercise; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D012923:Social Class; D011795:Surveys and Questionnaires; D014505:Urban Population