双自由人规则功效检验及其发展构想  

Effectiveness Test and Development of the Double Libero System

作　　者：杨学智[1] 

机构地区：[1]西安体育学院,西安710068

出　　处：《价值工程》2011年第21期204-205,共2页Value Engineering

摘　　要：采用数理统计、专家访谈等方法对双自由人规则试用前、后两届世界男排联赛自由人的防守效果、接球比例以及比赛的局时间等方面进行统计分析。结果发现:2009年1月正式试用的双自由人规则其实质为"双自由人规则单自由人作用"对攻强守弱的比赛现状未起到实质性的影响。针对这一情况,文章提出了增设"后排自由攻防队员"的探索性构想。By using of mathematical statistics,expert interviews and other methods,some statistical analysis was made for the Libero defend effects,the meet ball ratio and the set time in the two-time world men＇s world league before and after using the Double Libero system.The results show that the Double Linero system actually acts the single Libero system and does not play a substantive effect for the game status of strong attack and weak defensive.Aimed for this,we propose the exploratory idea of increasing a ＂offensive and defensive＂ back player.

关 键 词：排球 双自由人 比赛效果 发展 构想 

分 类 号：G42[文化科学—课程与教学论]