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Lewis, Liane, Hernon, James, Clark, Allan 
ORCID: https://orcid.org/0000-0003-2965-8941 and Saxton, John
(2018)
Validation of the IPAQ against different accelerometer cut-points in older cancer survivors and adults at risk of cancer.
Journal of Aging and Physical Activity, 26 (1).
pp. 34-40.
ISSN 1063-8652
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Abstract
Introduction: The present study investigated the convergent validity of an interview-administered IPAQ long version (IPAQ-L) in an older population by comparison with objective accelerometry movement data. Methods: Data from 52 participants (mean age 67.9 years, 62% male) were included in the analysis. Treadmill derived (TM-ACC: 1952-5724 cpm) and free-living physical activity (PA) derived (FL-ACC: 760-5724 cpm) accelerometer cut-points were used as criterion. Results: IPAQ-L measures (total PA, leisure-time, walking-time, sedentary time) were significantly correlated with accelerometry (P≤0.05). Differences in sex were observed. Bland-Altman Limits of Agreement analysis showed that the IPAQ-L overestimated PA in relation to accelerometry. Conclusions: Our results show that an interview-administered IPAQ-L shows low to moderate convergent validity with objective PA measures in this population but there may be differences between males and females which should be further investigated.
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