How much activity do youth get? A quantitative review of heart-rate measured activity

被引:85
作者
Epstein, LH
Paluch, RA
Kalakanis, LE
Goldfield, GS
Cerny, FJ
Roemmich, JN
机构
[1] SUNY Buffalo, Sch Med & Biomed Sci, Dept Pediat, Buffalo, NY 14214 USA
[2] Childrens Hosp Eastern Ontario, Res Inst, Ottawa, ON, Canada
[3] SUNY Buffalo, Dept Phys Therapy Nutr & Exercise Sci, Buffalo, NY 14260 USA
关键词
activity; heart rate; exercise intensity; exercise duration;
D O I
10.1542/peds.108.3.e44
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Objective. Recommendations for adult physical activity have shifted from 20 to 60 minutes of continuous vigorous activity 3 to 5 times a week to accumulation of 30 minutes of moderate to vigorous physical activity most days of the week. Variations of these guidelines also have been suggested for children, based on the idea of accumulating moderate to vigorous physical activity throughout the day, rather than attaining vigorous physical activity in continuous blocks. The goal of this study was to assess accumulated amounts of physical activity at different intensities in children. Methods. We reviewed 26 studies (n = 1883) in youth aged 3 to 17 years that used heart-rate recording to measure physical activity in children to determine accumulated daily activity. Included were studies that provided time being active for at least 2 heart rate intensities at or above 120 beats/minute. Descriptive characteristics of the study groups were determined, and the influence of age, gender, and hours and days of observation on the slope of activity time as a function of percentage of heart rate reserve (HRR) was determined using hierarchical linear regression. Results. Youth attained 128.0 +/- 45.6, 47.1 +/- 14.9, 29.3 +/- 13.7, and 14.7 +/- 6.0 minutes/day between 20% to 40%, 40% to 50%, 50% to 60%, and greater than 60% HRR, respectively. Age was a significant predictor of the intercept and slope of the physical activity and %HRR relationship. Conclusion. Youth of all ages attain >60 minutes/day of low-intensity physical activity and approximately 30 minutes/day of activity at traditional cardiovascular fitness training levels of 50% or more of HRR. Recommendations for youth activity are discussed.
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页数:10
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