Journal
JOURNAL OF PHYSICAL ACTIVITY & HEALTH
Volume 5, Issue 5, Pages 746-760Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/jpah.5.5.746
Keywords
physical activity assessment; measurement; epidemiology; community-based research
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Funding
- NATIONAL CANCER INSTITUTE [R25CA100600, R01CA098864] Funding Source: NIH RePORTER
- NCI NIH HHS [R25 CA100600, R01 CA098864, 5R01CA098864-02, 3R01CA098864-02S1, R01 CA098864-02] Funding Source: Medline
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Background: The International Physical Activity Questionnaire-Short Form (IPAQ-S) has been evaluated against accelerometer-determined physical activity measures in small homogenous samples of adults in the United States. There is limited information about the validity of the IPAQ-S in diverse US samples. Methods: 142 Blacks residing in low-income housing completed the IPAQ-S and wore an accelerometer for up to 6 days. Both 1- and 10-minute accelerometer bouts were used to define time spent in light, moderate, and vigorous physical activity. Results: We found fair agreement between the IPAQ-S and accelerometer-determined physical activity (r = .26 for 10-minute bout, r = .36 for 1-minute bout). Correlations were higher among men than women. When we classified participants as meeting physical activity recommendations, agreement was low (kappa = .04, 10-minute; kappa = .21, 1-minute); only 25% of individuals were classified the same by both instruments (10-minute bout). Conclusions: In one of the few studies to assess the validity of a self-reported physical activity measure among Blacks, we found moderate correlations with accelerometer data, though correlations were weaker for women. Correlations were smaller when IPAQ-S data were compared using a 10-versus a 1-minute bout definition. There was limited evidence for agreement between the instruments when classifying participants as meeting physical activity recommendations.
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