Difference between self-reported and accelerometer measured moderate-to-vigorous physical activity in youth.
We examined differences between objective (accelerometer) and subjective (selfreport) measures of moderate-to-vigorous physical activity (MVPA) in youth. Participants included 2761 youth aged 12-19 years. Within each sex and race group, objective and self-reported measures of MVPA were poorly correlated (R² = .01-.10). Self-reported MVPA values were higher than objective values (median: 42.4 vs. 15.0 min/d). 65.4% of participants over-reported their MVPA by ³5 min/d. The difference between self-reported and objective measures was not influenced by sex, age, or race. There was, however, a systematic difference such that inactive participants over-reported their MVPA to the greatest extent.
School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
Allana G W
AG
LeBlanc
Ian
I
Janssen
D000054:Acceleration; D000293:Adolescent; D016009:Chi-Square Distribution; D002648:Child; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D016014:Linear Models; D008297:Male; D018670:Monitoring, Ambulatory; D009043:Motor Activity / Q000502:physiology*; D009749:Nutrition Surveys; D012650:Self Disclosure; D014481:United States; D055815:Young Adult