Validity of the International Physical Activity Questionnaire in Hong Kong Chinese Adults
Author Information
Author(s): Lee Paul H, Yu YY, McDowell Ian, Leung Gabriel M, Lam TH, Stewart Sunita M
Primary Institution: University of Hong Kong
Hypothesis
Does the International Physical Activity Questionnaire (IPAQ) perform differently across various subgroups in the Hong Kong Chinese population?
Conclusion
The IPAQ showed poor validity in measuring physical activity among Hong Kong Chinese adults, with significant overestimation compared to accelerometer data.
Supporting Evidence
- The IPAQ overestimated physical activity by 231% compared to accelerometer readings.
- Agreement between IPAQ and accelerometer classifications was only slightly better than chance.
- None of the subgroups showed good validity for the IPAQ.
Takeaway
This study found that a common questionnaire for measuring physical activity, the IPAQ, doesn't work well for people in Hong Kong, often saying they exercise more than they actually do.
Methodology
Participants completed the IPAQ and wore an accelerometer for four days to compare self-reported and objective physical activity levels.
Potential Biases
Social desirability bias may have led participants to overreport their physical activity levels.
Limitations
The study may have biased results as those who wore the accelerometer could be healthier than non-wearers, and the IPAQ may not have been validated for the specific cultural context.
Participant Demographics
The sample included 46.1% males, with a mean age of 42.9 years, and varied in job status and education levels.
Statistical Information
P-Value
0.11
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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