Difference Between Self-Reported and Accelerometer Measured Moderate-to-Vigorous Physical Activity in Youth

• Autores: Allana G.W. LeBlanc, Ian Janssen
• Localización: Pediatric exercise science, ISSN 0899-8493, Vol. 22, Nº. 4, 2010, págs. 523-534
• Idioma: inglés
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• Resumen

  • We examined differences between objective (accelerometer) and subjective (self-report) 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 >/=5 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