Vanhelst Jérémy, Béghin Laurent, Turck Dominique, Gottrand Frédéric
Inserm U995, Faculté de Médecine, Université, Lille 2 Droit et Santé et IMPRT, Lille, France.
Int J Rehabil Res. 2011 Jun;34(2):175-7. doi: 10.1097/MRR.0b013e328340129e.
The aim of this study was to determine and validate the new thresholds for various intensities of physical activity in adolescents using the Actigraph accelerometer. Sixty healthy participants aged 10-16 years were recruited. Forty participants participated in the calibration study whereas the others participated in the validation study. Accelerometer data, heart rate, and oxygen consumption were measured at nine levels of physical activity which varied in intensity: sedentary, light, moderate and vigorous. The activity categories and accelerometer counts were sedentary activity, 0-400 counts/min; light activity, 401-1900 counts/min; moderate activity, 1901-3918 counts/min; and vigorous activity, greater than 3918 counts/min, respectively. This study establishes new threshold values for various physical activities that can be used for population-based studies in adolescents.
本研究的目的是使用Actigraph加速度计确定并验证青少年不同强度体育活动的新阈值。招募了60名年龄在10至16岁的健康参与者。40名参与者参与了校准研究，其余参与者参与了验证研究。在九个强度不同的体育活动水平下测量了加速度计数据、心率和耗氧量，活动强度分别为久坐、轻度、中度和剧烈。活动类别和加速度计计数分别为：久坐活动，0至400次/分钟；轻度活动，401至1900次/分钟；中度活动，1901至3918次/分钟；剧烈活动，大于3918次/分钟。本研究建立了可用于青少年人群研究的各种体育活动的新阈值。
