| Summary: | 碩士 === 輔仁大學 === 體育學系碩士班 === 94 === The Kinematics analysis of baseball pitching motion
Graduate Institute of Physical Education, Fu Jen Catholic University
Researcher：Lin Yu-Jie Advisor：Chen Tai-Cheng
Abstract
The purpose of this study was to compare the differences of body movement parameters in acceleration phase of three different groups of pitchers, when they pitched ball at their most effort. This study applied two digital cameras to collect the visual data of 2 professional pitchers, 5 university pitchers and 5 senior high school pitchers. And calculate the visual data into parameters by Silicon Coach mechanic analysis system. The parameters was analyzed by descriptive statistics, person product-moment correlation, one –way ANOVA and Scheffe multiple comparison by package statistics software SPSS 10.0. The findings of this study concluded as follow.
〈一〉there is positive correlation in three groups in 「time 」parameter (P﹤.01), and no significant difference between groups, (P>.05).
〈二〉there is positive correlation in three groups in 「speed」parameter (P﹤.01), and no significant difference between groups, (P>.05).
〈三〉there is positive correlation in three groups in 「gravity shift 」parameter (P﹤.01), and there is significant difference between groups, (P<05). It means pitchers in different level make different gravity shift, because of the different height.
〈四〉there is positive correlation in acceleration phase on 「arm shoulder」、「elbow」、「wrist」、「finger tips」and 「the speed in the moment of release」 (P﹤.01) in three groups, and no significant difference between groups, (P>.05).
〈五〉there is positive correlation in acceleration phase on「angle of elbow」in three groups, (P﹤.01), and no significant difference between groups, (P>.05).
Key words: baseball pitcher, acceleration phase, Kinematics analysis
Total pages：65
|
|---|
