摘要
目的:为探究不同海拔7∼12岁学生体力活动、久坐行为与肥胖的关联性,预测肥胖的体力活动、久坐时间风险切点.方法:以世居平原及世居高原各720名7∼12岁学生为研究对象,通过形态学测试及体力活动测评,确定不同海拔7∼12岁学生肥胖风险的体力活动、久坐时间切点值.结果:随年龄增长,不同海拔7∼12岁学生BMI水平呈上升趋势、WHR水平呈下降趋势;高海拔学生检出率为10.00%、低海拔为12.36%,海拔间检出率存在显著差异(χ2=8.167,P<0.05).随年龄增长,各组男、女生体力活动相关指标及ST均呈上升趋势;低海拔地区7∼12岁学生LPA、MPA、VPA、MVPA及TPA水平均显著高于高海拔地区(P<0.05),ST水平显著低于高海拔地区(P<0.05).随BMI上升,体力活动指标均呈先增长后下降的趋势,ST水平呈先下降后增长的趋势;高海拔、低海拔男女生LPA、MPA、VPA、MVPA、TPA水平及ST水平均与BMI存在关联性(P<0.05);高海拔、低海拔7∼12岁学生MPA、MVPA、ST水平与BMI存在显著关联.各组男、女生MVPA及ST预测肥胖的切点值分别为97.42 min-1、735.46 min-1、88.59 min-1、771.30 min-1、115.34 min-1、691.92 min-1、92.71 min-1、720.45min-1.结论:体力活动、久坐时间指标与不同海拔7∼12岁学生肥胖发生率存在显著关联,高原7∼12岁男、女生久坐时间切点值高于同龄平原学生,平原7∼12岁男、女生MVPA切点值高于同龄高原学生.
Abstract
Objective To explore the correlation between physical activity,sedentary behavior,and obesity among students aged 7∼12 at different altitudes,and to predict the risk cutoff points for physical activity and sedentary time in obesity.Method A total of 720 students aged 7∼12 years old,residing in the plain and pla-teau respectively,were selected as the research subjects.Through morphological testing and physical activity as-sessment,the physical activity and sedentary time cutoff values of obesity risk for students aged 7∼12 years old at different altitudes were determined.Result As age increases,BMI levels of students aged 7∼12 at different altitudes show an upward trend,while WHR levels show a downward trend;The detection rate of high altitude students is 10.00%,and that of low altitude students is 12.36%,with significant differences in detection rates be-tween altitudes(χ2=8.167,P<0.05).As age increases,the physical activity related indicators and ST of both males and females in each group show an upward trend;The levels of LPA,MPA,VPA,MVPA,and TPA among students aged 7∼12 in low altitude areas were significantly higher than those in high altitude areas(P<0.05),while ST levels were significantly lower than those in high altitude areas(P<0.05).As BMI increases,physical ac-tivity indicators show a trend of first increasing and then decreasing,while ST levels show a trend of first decreas-ing and then increasing;There is a correlation between the levels of LPA,MPA,VPA,MVPA,TPA,and ST in high altitude and low altitude male and female students and BMI(P<0.05);There is a significant correlation be-tween the levels of MPA,MVPA,ST and BMI among students aged 7∼12 at high and low altitudes.The cutoff values of MVPA and ST for predicting obesity in male and female groups were 97.42 min-1,735.46 min-1,88.59 min-1,771.30 min-1,115.34 min-1,691.92 min-1,92.71 min-1,and 720.45 min-1,respectively.Conclusion There is a significant correlation between physical activity and sedentary time indicators and the incidence of obesity among students aged 7∼12 at different altitudes.The cutoff point values of sedentary time for males and females aged 7∼12 at high altitudes are higher than those of students in the same age group.The cutoff point values of MVPA for males and females aged 7∼12 at high altitudes are higher than those of students in the same age group.
基金项目
新疆维吾尔自治区高校科技计划项目(XJEDU2021SY040)
NETL
NSTL
维普
万方数据