Validation of the IPAQ against different accelerometer cut-points in older cancer survivors and adults at risk of cancer

Lewis, Liane S. and Hernon, James and Clark, Allan and Saxton, John M. (2017) 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. pp. 1-24. 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.