CAJ | 학술논문

目的探讨体重指数(BMI)与儿童青少年体能指数(PFI)之间的关联.方法以安徽省参加2010年全国学生体质健康调查的7～18岁汉族学生共8941人为研究对象.按性别、年龄分层后,将研究对象依据BMI百分位数分为5组:很低(BMI＜P5)、较低(P5≤BMI＜P15)、正常(P15≤BMI＜ P85)、较高(P85≤BMI＜P95)、很高(BMI≥P95).对各体能测试成绩进行标准化,将其Z分相加算出PFI.用方差分析比较不同BMI组PFI的差异.用线性回归模型分析不同性别不同学龄段学生BMI与PFI的关联.结果 8941名学生中BMI很低、较低、正常、较高、很高组的PF1分别为-1.77、-0.91、0.32、-0.17、-0.54,呈倒“U”形分布；BMI正常组的PFI显著高于其他各组(P值均＜0.05).回归分析显示PFI与BMI呈正相关,与BMI2呈负相关,表明PFI是BMI的二次函数,随着BMI的增高PFI呈现先上升后下降的抛物线变化趋势.结论 BMI与儿童青少年PFI呈现抛物线变化趋势.
목적 탐토체중지수(BMI)여인동청소년체능지수(PFI)지간적관련.방법 이안휘성삼가2010년전국학생체질건강조사적7～18세한족학생공8941인위연구대상.안성별、년령분층후,장연구대상의거BMI백분위수분위5조:흔저(BMI＜P5)、교저(P5≤BMI＜P15)、정상(P15≤BMI＜ P85)、교고(P85≤BMI＜P95)、흔고(BMI≥P95).대각체능측시성적진행표준화,장기Z분상가산출PFI.용방차분석비교불동BMI조PFI적차이.용선성회귀모형분석불동성별불동학령단학생BMI여PFI적관련.결과 8941명학생중BMI흔저、교저、정상、교고、흔고조적PF1분별위-1.77、-0.91、0.32、-0.17、-0.54,정도“U”형분포；BMI정상조적PFI현저고우기타각조(P치균＜0.05).회귀분석현시PFI여BMI정정상관,여BMI2정부상관,표명PFI시BMI적이차함수,수착BMI적증고PFI정현선상승후하강적포물선변화추세.결론 BMI여인동청소년PFI정현포물선변화추세.
Objective To explore the relationship between body mass index (BMI) and physical fitness index (PFI) among children and adolescents.Methods The study sample included 8941 students aged 7 to 18 years in Anhui who attended the Physical Fitness and Health Surveillance program of Chinese School Students,in 2010.Within each sex- and age-specific group,students were classified into five BMI categories which were:very low,BMI ＜5th percentile; low,BMI ≥5th but ＜15th percentiles; normal,BMI ≥15th but ＜85th percentiles; high,BMI ≥85th but ＜95th percentiles; and very high,BMI ≥95th percentiles.Z-scores based on urban-rural,sex- and age-specific means and standard deviations were calculated,and the sum of Z-scores for the fitness tests was used as a PFI.Differences in PFI between BMI categories were compared with ANOVA.Sex- and grade-specific regressions of PFI on BMI were done by using a linear model.Results For 8941 students,the PFIs on very low,low,normal,high and very high group were-1.77,-0.91,0.32,-0.17 and -0.54,respectively,and showed an inverted U shape.The normal BMI group students presented the highest PFI.Data from Linear regression analysis revealed that PFI was significantly positively correlated with BMI,while negatively associated with BMI square,which indicated that PFI was the quadratic function of BMI.When BMI was increasing,PFI showed a parabolic curvilinear.Conclusion Relationships between BMI and PFI were parabolic curvilinear among the children and adolescents aged 7 to 18 in Anhui province.