Comparison of self-reported and accelerometer-measured physical activity in Canadian adults

The objective of this study is to compare estimates of physical activity among adults from a newly developed Canadian questionnaire with those obtained objectively by accelerometry. Data for 18- to 79-year-olds were collected in 2014 and 2015 as part of the Canadian Health Measures Survey. Moderate-to-vigorous physical activity was reported on the household questionnaire by domain (transportation, recreation, and occupational or household) as part of the new Physical Activity Adult Questionnaire (PAAQ) and measured objectively using the Actical accelerometer.