Journal
AMERICAN JOURNAL OF EPIDEMIOLOGY
Volume 179, Issue 12, Pages 1493-1502Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/aje/kwu087
Keywords
accelerometry; physical activity; questionnaires; sedentary behavior; validation
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Funding
- Health and Social Care Information Centre
- National Institute for Health Research (United Kingdom)
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The criterion validity of the 2008 Physical Activity and Sedentary Behavior Assessment Questionnaire (PASBAQ) was examined in a nationally representative sample of 2,175 persons aged a parts per thousand yen16 years in England using accelerometry. Using accelerometer minutes/day greater than or equal to 200 counts as a criterion, Spearman's correlation coefficient (rho) for PASBAQ-assessed total activity was 0.30 (95% confidence interval (CI): 0.25, 0.35) in women and 0.20 (95% CI: 0.15, 0.26) in men. Correlations between accelerometer counts/minute of wear time and questionnaire-assessed relative energy expenditure (metabolic equivalent-minutes/day) were higher in women (rho = 0.41, 95% CI: 0.36, 0.46) than in men (rho = 0.32, 95% CI: 0.26, 0.38). Similar correlations were observed for minutes/day spent in vigorous activity (women: rho = 0.39, 95% CI: 0.33, 0.46; men: rho = 0.31, 95% CI: 0.26, 0.36) and moderate-to-vigorous activity (women: rho = 0.42, 95% CI: 0.36, 0.48; men: rho = 0.38, 95% CI: 0.32, 0.45). Correlations for time spent being sedentary (< 100 counts/minute) were 0.30 (95% CI: 0.24, 0.35) and 0.25 (95% CI: 0.19, 0.30) in women and men, respectively. Sedentary behavior correlations showed no sex difference. The validity of sedentary behavior and total physical activity was higher in older age groups, but validity was higher in younger persons for vigorous-intensity activity. The PASBAQ is a useful and valid instrument for ranking individuals according to levels of physical activity and sedentary behavior.
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