上海市儿童青少年步行活动水平——基于加速度传感器的调查研究
Shanghai Children and Youth’s Daily Walking Behavior——Survey Based on Accelerometer
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摘要: 目的:应用GT3X加速度传感器测量上海儿童青少年步行活动水平, 调查上海儿童青少年体力活动现状。方法:采用分层随机抽样原则, 抽取上海市369名儿童青少年 (男189名, 女180名;917岁, 平均12.81±2.60岁) 。以ActiGraph GT3X为测量工具, 步数为主要观测指标。受试者连续佩戴GT3X7天 (周一周日) , 每天自早晨起床后开始, 直到晚上睡觉前摘除。结果:一周中步行活动量最多的是周五 (9 031±3 148步/天) , 紧接着依次是周四 (8 199±2 406步/天) 、周一 (8 053±2 561步/天) 、周二 (7 630±2 104步/天) 、周三 (7 413±2 449步/天) 、周六 (6 187±3 297步/天) 和周日 (5 858±3 169步/天) 。平时日步行数显著高于周末日 (t=12.31, P<0.01, Effect size=0.86) , 分别为8 099±1 915步和6 006±2 869步;男生日常步行数显著多于女生 (t=4.59, P<0.01, Effect size=0.73) , 分别为7 948±1 780步和7 048±1 618步。结论:上海儿童青少年日常步行数显著性低于欧美发达国家的体力活动指南推荐量。Abstract: Objective:To assess ambulatory physical activity (PA) behavior of the Shanghai children and youth.Method:Daily steps of 369children and youth (189boys, 180girls;9-17yr.old, mean age 12.81±2.60yr.old) , with a stratified random sampling method, determined by wearing a GT3Xaccelerometer for 7consecutive days except sleep.Result:The most active walking day is Friday (Mean±SD:9 031±3 148steps) , followed by Thursday (8 199± 2 406) , Monday (8 053±2 561) , Tuesday (7 630±2 104) , Wednesday (7 413±2 449) , Saturday (6 187±3 297) and Sunday (5 858±3 169) ;They walked more steps during week than weekend days (t=12.31, P<0.01, Effect size=0.86) , 8 099±1 915and 6 006± 2 869steps, respectively;Boys 7 948±1 780walked more steps than girls 7 048±1 618 (t= 4.59, P<0.01, Effect size=0.73) .Conclusion:According to commonly used health-related evaluation criteria, few children and youth of Shanghai met the recommendation of needed PA.
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