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Systematic review finds poor validity and substantial overestimation of physical activity by the IPAQ-SF across studies, indicating weak support for its use as a reliable tool.
The correlation between the IPAQ-SF and objective measures of activity or fitness in the large majority of studies was lower than the acceptable standard. Furthermore, the IPAQ-SF typically overestimated physical activity as measured by objective criterion by an average of 84 percent. Hence, the evidence to support the use of the IPAQ-SF as an indicator of relative or absolute physical activity is weak.
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Lee et al. (2011) studied this question.
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