Physical Activity in the United States Measured by Accelerometer
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Richard P. Troiano [1] ; David Berrigan [1] ; Kevin Dodd [1] ; Louise C. Mâsse [1] ; Timothy Tilert [2] ; Margaret McDowell [1]
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[1] National Institutes of Health
National Institutes of Health
Estados Unidos
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[2] Centers for Disease Control and Prevention
Centers for Disease Control and Prevention
Estados Unidos
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- Localización: Medicine & Science in Sports & exercise: Official Journal of the American College of Sports Medicine, ISSN 0195-9131, Vol. 40, Nº. 1, 2008, págs. 181-188
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
- Dialnet Métricas: 48 Citas
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Resumen
Purpose: To describe physical activity levels of children (6-11 yr), adolescents (12-19 yr), and adults (20+ yr), using objective data obtained with accelerometers from a representative sample of the U.S. population.
Methods: These results were obtained from the 2003-2004 National Health and Nutritional Examination Survey (NHANES), a cross-sectional study of a complex, multistage probability sample of the civilian, noninstitutionalized U.S. population in the United States. Data are described from 6329 participants who provided at least 1 d of accelerometer data and from 4867 participants who provided four or more days of accelerometer data.
Results: Males are more physically active than females. Physical activity declines dramatically across age groups between childhood and adolescence and continues to decline with age. For example, 42% of children ages 6-11 yr obtain the recommended 60 min·d-1 of physical activity, whereas only 8% of adolescents achieve this goal. Among adults, adherence to the recommendation to obtain 30 min·d-1 of physical activity is less than 5%.
Conclusions: Objective and subjective measures of physical activity give qualitatively similar results regarding gender and age patterns of activity. However, adherence to physical activity recommendations according to accelerometer-measured activity is substantially lower than according to self-report. Great care must be taken when interpreting self-reported physical activity in clinical practice, public health program design and evaluation, and epidemiological research.
