Physical Activity Measurement

47 participants self-reported at least 10 min/week of VPA while activPAL identified only 12 meeting that criterion. The cIPAQ-SF overestimated MVPA by a mean of 144 min/week with moderate correlation against activPAL. The cIPAQ-SF's correlation with activPAL for VPA was not statistically significant, and it overestimated VPA by a mean of 78 min/week. Specificity for identifying individuals who do engage in some VPA was low at 47.8%. Individuals with obesity may perceive activity as vigorous at cadence levels below the activPAL threshold, creating a systematic perceptual mismatch that inflates self-reported VPA. Self-report questionnaires carry known risks of recall bias and social desirability effects.