Validation of an Internet-Based Long Version of the International Physical Activity Questionnaire in Danish Adults Using Combined Accelerometry and Heart Rate Monitoring

Andreas Wolff Hansen, Inger Dahl-Petersen, Jørn Wulff Helge, Soren Brage, Morten Grønbæk, Trine Flensborg-Madsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

Background: The International Physical Activity Questionnaire (IPAQ) is commonly used in surveys, but reliability and validity has not been established in the Danish population. Methods: Among participants in the Danish Health Examination survey 2007-2008, 142 healthy participants (45% men) wore a unit that combined accelerometry and heart rate monitoring (Acc+HR) for 7 consecutive days and then completed the IPAQ. Background data were obtained from the survey. Physical activity energy expenditure (PAEE) and time in moderate, vigorous, and sedentary intensity levels were derived from the IPAQ and compared with estimates from Acc+HR using Spearman's correlation coefficients and Bland-Altman plots. Repeatability of the IPAQ was also assessed. Results: PAEE from the 2 methods was significantly positively correlated (0.29 and 0.49; P = 0.02 and P < 0.001; for women and men, respectively). Men significantly overestimated PAEE by IPAQ (56.2 vs 45.3 kJ/kg/day, IPAQ: Acc+HR, P < .01), while the difference was nonsignificant for women (40.8 vs 44.4 kJ/kg/day). Bland-Altman plots showed that the IPAQ overestimated PAEE, moderate, and vigorous activity without systematic error. Reliability of the IPAQ was moderate to high for all domains and intensities (total PAEE intraclass correlation coefficient = 0.58). Conclusions: This Danish Internet-based version of the long IPAQ had modest validity and reliability when assessing PAEE at population level.

OriginalsprogEngelsk
TidsskriftJournal of Physical Activity & Health
Vol/bind11
Udgave nummer3
Sider (fra-til)654-664
ISSN1543-3080
DOI
StatusUdgivet - 2014

Bibliografisk note

2013 Feb 8. [Epub ahead of print]

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