山东省7岁儿童BMI分布对速度和耐力素质的影响

Influence of BMI Distribution on Velocity and Stamina Constitution Among Children in Shandong

目的探讨群体儿童BMI分布对速度和耐力素质的影响,为控制体重、增强素质提供依据。方法对山东省910名7岁儿童按BMI分组,分别计算各组儿童50m跑和50m×8往返跑的平均成绩,绘制速度和耐力素质随BMI的变化曲线。结果 7岁儿童的速度和耐力素质随BMI的变化呈"V"型分布,BMI在14.5～16.0kg/m2之间的学生速度和耐力素质最好,BMI过小或过大都不利于速度和耐力素质的发展。结论儿童BMI增长和超重、肥胖率上升是导致运动素质下降的身体形态学原因。增强学生体质必须采取加强体育锻炼、营养教育和控制体重等综合措施。

Objective To explore the influence of BMI distribution on velocity and stamina constitution among children, and to provide basis for controlling body weight and building up physical fitness. Methods A total of 910 children age 7 were grouped by BMI,the average scores of 50m run and 50m × 8 coming-and-going run of each group were calculated respectively,and the curves of velocity and stamina constitution with BMI were drawn. Results The velocity and stamina constitution changed with BMI of children,higher and lower BMI had negative effects on children＇s＇ physical fitness, the velocity and stamina constitution of children with medium-sized BMI（14.5-16.0 kg/m2） were best. Conclusion The increase of BMI is the body morphologic factor responsible for physical fitness decline, the effective comprehensive interventions should be developed including physical exercise, nutrition education and controlling body weight.