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- W2381330473 abstract "In softball games,the choice of defending and attacking tactics is based on pitchers.Most of abroad academician believed that,In a softball game,60 percents are determined by pitchers. Consider that there are few baseball athletes in our country,and the sample sizes of pitchers are more less,then we apply a Gray Correlation Analysis Method to analysis the relativity between flexor and extensor muscles strength of pitcher's joints and the leave-hand velocity of softball.Using an isokinetic muscle strength test system,the shoulders,hips,knees and ankles of pitchers were tesed,testing velocity taked as 60°/s and 240°/s to represent the max muscles strength and the pykno-muscles strength respectively.Taking the max peak moment as research index,using kinematics methods to determine the instantaneous leave-hand velocity.The research discovered that,in the flexor group of tests joints,the correlation coefficient between the fast strength of non-throw side hip and knee and the ball velocity are all above 0.8;In the extensor group,the correlation coefficient between the biggest strength of throws side shoulder and the ball velocity is the highest,R=0.813." @default.
- W2381330473 created "2016-06-24" @default.
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- W2381330473 date "2011-01-01" @default.
- W2381330473 modified "2023-09-28" @default.
- W2381330473 title "Grey Relational Analysis of Softball Pitcher in the Speed and Relevance of Muscle" @default.
- W2381330473 hasPublicationYear "2011" @default.
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