Physical activity in the United States measured by accelerometer
Physical activity in the United States measured by accelerometer
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DOI：
10.1249/mss.0b013e31815a51b3
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发表时间：
2008-01-01
期刊：
影响因子：
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通讯作者：
Mcdowell, Margaret
中科院分区：
文献类型：
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作者：
Troiano, Richard P.;Berrigan, David;Mcdowell, Margaret
目的：描述儿童（6-11岁）、青少年（12-19岁）和成人（20岁以上）的身体活动水平，使用加速度计从美国人口的代表性样本中获得的客观数据。方法：这些结果来自2003-2004年全国健康和营养检查调查（NHANES），这是一项复杂的、多阶段概率样本的横断面研究，涉及美国非机构的美国平民人口。数据来自6329名参与者，他们提供了至少1天的加速度计数据，来自4867名参与者，他们提供了4天或更多的加速度计数据。结果：男性比女性更活跃。在儿童和青少年之间，身体活动在各个年龄组中急剧下降，并随着年龄的增长而继续下降。例如，42%的6-11岁儿童达到了建议的每天60分钟（-1）的身体活动，而只有8%的青少年达到了这一目标。在成年人中，坚持每天锻炼30分钟（-1）的建议少于5%。结论：体力活动的客观和主观测量给出了关于性别和年龄活动模式的定性相似的结果。然而，根据加速度计测量的运动量，坚持体力活动建议的比例大大低于自我报告。在临床实践、公共卫生计划设计和评估以及流行病学研究中解释自我报告的身体活动时，必须非常小心。
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.