对提高我国百米途中跑步频与步幅有效途径的探讨   总被引：7，自引：0，他引：7  

张庆文  忻鼎亮  张蒙汗  曹之刚 《体育科研》1999,(2)

本文采用高速摄影和影片解析的方法,对我国优秀男子短跑运动员途中跑步频、步幅诸因素进行分析。结果显示腾空时间和支撑阶段支撑腿从垂直支撑到最大缓冲的时间过长是制约步幅的主要因素;合理延长后蹬距离是提高步频的有效途径。  相似文献   

When does gender occupational segregation start? An experimental evaluation of the effects of gender and parental occupation in the apprenticeship labor market     

《Economics of Education Review》2023

The apprenticeship market is the earliest possible entry point into the workforce in developed economies. Since early labor market shocks are likely magnified throughout professional life, avoiding mismatches between talent and occupations – for example due to gender- or status-based discrimination – appears crucial. This experimental study investigates the effects of applicant gender and its interaction with parental occupation on the probability of receiving an invitation to an interview in the Swiss apprenticeship labor market. We find no robust evidence of differential treatment by employers in most cases. Policies aimed at fostering gender equality across occupations should therefore focus on removing gender related educational or cultural barriers influencing occupational choices at young ages.  相似文献