河南省2019年中小学生体能状况及影响因素

目的 了解河南省中小学生的体能状况及影响因素，为提高中小学生的身体素质水平提供理论依据。方法 采用2019年河南省全国学生体质与健康调研数据，共调查42 734人。通过Z分法计算各项体能指标的Z值，相加得出体能指数(PFI),综合反映体能状况。比较不同组别学生的体能指标，并通过多重线性回归对PFI的影响因素进行分析。结果男生的肺活量、握力、立定跳远、50 m跑、50 m×8往返跑、PFI分别为[(2 552.1±1 226.5)mL、(26.0±13.9)N、(171.0±43.7)cm、(9.3±1.8)s、(132.1±22.6)s、(1.4±3.6)],均优于女生[(1 965.2±765.3)mL、(19.1±8.2)N、(142.4±26.6)cm、(10.5±1.4)s、(136.9±21.1)s、(-1.4±3.2)],差异均有统计学意义(t值分别为59.35,62.66,81.87,-74.92,-16.72,85.96,P值均<0.01);而男生坐位体前屈[(7.0±7.5)cm]低于女生[(11.8±7.1)cm],差异有统计学意义(t=-68.57,P<...

Physical fitness and associated factors among primary and middle school students in Henan Province in 2019

  Objective  To understand physical fitness among primary and middle school students in Henan Province, so as to provide theoretical basis for physical fitness promotion among primary and middle school students.  Methods  Based on data of National Survey on Student Physical Fitness and Health in Henan Province in 2019, a total of 42 734 students were investigated.The Z-value of each physical fitness index were calculated by Z method, physical fitness index (PFI) was obtained to reflect the physical fitness condition synthetically.Physical fitness of different groups were compared, and associated factors of PFI were analyzed by multiple linear regression.  Results  Lung capacity, grip strength, standing long jump, 50 m run, 50 m×8 shuttle run and PFI in boys were, respectively, which were significantly higher than that of girls (t=59.35, 62.66, 81.87, -74.92, -16.72, 85.96, P < 0.01).The seated forward flexion of boys was significantly lower than that of girls, the difference was statistically significant (t=-68.57, P < 0.01).Significant sex differences were observed in physical fitness at different age (P < 0.01).There was a certain gap between urban boys and rural boys in terms of strength quality, endurance quality and flexibility quality, and the physical quality of urban girls was better than that of rural girls as a whole.The detection rates of poor eyesight, malnutrition, overweight and obesity, anemia and high blood pressure of primary and middle school students were 68.0%, 5.4%, 26.0%, 15.9% and 18.0%, respectively.Region, sex, age and nutritional status (malnutrition, overweight and obesity) were the influencing factors of PFI (β=-0.23, -2.92, -0.11, -1.19, -0.78, P < 0.05).  Conclusion  Physical fitness among primary and middle school students varies in gender, age group, region and disease condition in Henan Province.Scientific intervention should be administered, especially for rural, female students, senior students, undernourished and overweight and obese students, to improve health awareness and physical fitness.