Key result
The physical activity questionnaire showed acceptable validity compared to a 24-hour activity diary (mean bias -0.06), but significantly overestimated physical activity level compared to accelerometry (mean bias 0.36, P<0.001).
Why the study?
Does the Indian Migration Study physical activity questionnaire accurately measure physical activity levels compared to accelerometry and a 24-hour diary in South Indian adults?
Population
107 South Indian adults from urban and rural settings.
Comparison
Indian Migration Study physical activity… vs Accelerometry, 24-hour physical activity diary…
Design
Cross-sectional
Authors
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May support questionnaire use with diary reference in South Indian adults; leaves open accelerometry calibration for this population.
Cross-Sectional (n=107)
Yes
Does the Indian Migration Study physical activity questionnaire accurately measure physical activity levels compared to accelerometry and a 24-hour diary in South Indian adults?
Mean Difference: 0.36 (95% CI -0.14–0.85)
Absolute Event Rate: 1.72% vs 1.36%
p-value: p=<0.001
The Indian Migration Study physical activity questionnaire demonstrates acceptable validity for assessing physical activity levels in South Indian adults, whereas accelerometry may underestimate activity in this population.
Bharathi et al. (2009) conducted a cross-sectional in Healthy adults (n=107). Physical activity questionnaire vs. Accelerometry and 24-hour physical activity diary was evaluated on Physical activity level (PAL) (MD 0.36, 95% CI -0.14 to 0.85, p=<0.001). The physical activity questionnaire showed acceptable validity compared to a 24-hour activity diary (mean bias -0.06), but significantly overestimated physical activity level compared to accelerometry (mean bias 0.36, P<0.001).
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