主成分分析法在学生体质综合评价中的应用

Principal components analytic method is application in the synthesis appraisal of student body constitution

目的采用主成分分析法对反映学生耐力素质和心肺功能的指标进行综合评价,用实验室方法验证主成分分析法的有效性。方法:测试河北工程大学普通大学生23名10项体质指标,采用主成分分析法提取主成分,对每位受试者的体质综合评价排序,分组。对部分受试者进行递增负荷跑台实验(GXT)采集心肺功能的相关指标,验证主成分分析法在体质综合评价中的合理性和可操作性。结果(1)根据主成分综合表达式,计算主成分值、综合主成分值及排序。按排序分成三个组。(2)递增负荷跑台实验显示,最大摄氧量、氧脉搏、通气量等指标,强势组与弱势组相比出现显著差异,强势组好于一般组,一般组好于弱势组。结论:主成分分析法适用于学生的综合体质评价,具有合理性、可操作性的特点。

Objectives Uses the principal components analytic method to reflect the student endurance quality and the cardiopulmonary function indexs carries on the synthesis appraisal,and to confirms the principal components analytic method with the laboratory method the validity.Methods Hebei university of technology 33 ordinary university students have 10 indexs was used the principal components analytic method extraction principal components,to sort each student physique quality synthetic evaluation,to delimit the grouping to leave.The part of students take treatmill—Graded Exercise Testing（GXT） to gather cardiopulmonary function the correlation index,and using single factor variance analysis method confirmate rationality and feasibility of principal components analytic method in quality synthetic evaluation aspect.Results（1） According to the principal components synthesis expression,calculates the principal components value,the synthesis principal components value and sorting.Divides into three groups according to sorting.（2）The treatmill—GXT demonstrate that the maximal oxygen uptake,the oxygen pulse,ventilatory volume and so on,the strong trend group and the weak trend group compares has the remarkable difference（P0.05）,strong trend group good in common group,common group good in weak trend group.Conclusion The principal components analytic method is suitable in the student physique quality synthetic evaluation,has the rationality,feasibility characteristic.