重高指数(WLI)在初中男生身体素质分析中的应用

On the Application of WLI in the Analysis of Physical Fitness of Junior Middle School Boys

通过对321名初中男生重高指数(WLI)和部分身体素质指标(柔韧、爆发力、心肺耐力、速度)的测量,按照重高指数的不同分成偏低组、正常组、偏高组,根据所得资料进行统计分析。结果显示重高指数(WLI)与体质指数(BMI)相关度较高(96%),能准确评价少年儿童的肥胖度,而且各组间在柔韧、速度等素质差距均具显著性。

According to the weight-for-length index （WLI）,321 junior middle school boys were divided into 3 groups,the bottom group,the normal group and the top group and part of their physical fitness indexes were measured,such as flexibility performance,explosive force,anaerobic power performance and speed.After a statistical analysis of the data collected,the results are as follow：WLI is very much related to BMI,up to 96%;it can evaluate accurately teenager and children’s obesity;and between different groups,there exists a significant difference in qualities of flexibility,speed performance,etc.