THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION
碩士 === 臺北市立大學 === 運動器材科技研究所 === 103 === Purpose: To explore the effect of baseball bats, under identical moment of inertia (MOI) with various center of mass (COM) and weight on swing performance and muscle activation. Methods: Twelve college Level I baseball male players were recruited as subjects,...
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ndltd-TW-103UT0057990022019-05-15T21:59:29Z http://ndltd.ncl.edu.tw/handle/8cfxmn THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION 改變質心與重量球棒對揮棒表現與肌電活化之影響 Chen, Chun-Yang 陳俊揚 碩士 臺北市立大學 運動器材科技研究所 103 Purpose: To explore the effect of baseball bats, under identical moment of inertia (MOI) with various center of mass (COM) and weight on swing performance and muscle activation. Methods: Twelve college Level I baseball male players were recruited as subjects, who performed swing tests under four levels of MOI (very small, small, middle, large) with four different weights of wooden baseball bats and one adjustable COM of customized baseball bat. Each test processed three trials with the subject’s maximal effort. An image analysis system was used to analyze the swing performance, and the muscle activation of four muscle on leading hand was analyzed by electromyography. Results: No significant swing performances were found between the baseball bats of changing COM and weight under identical MOI (p>.05). The faster swing velocity was found along with the smaller MOI (p<.05), and two different types of baseball bat had the same phenomenon. Conclusion: Whether to change the center of mass or weight of baseball bat have the same swing performance, as long as the same moment of inertia. Chung, Pao Hung 鍾寶弘 2014 學位論文 ; thesis 50 zh-TW |
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碩士 === 臺北市立大學 === 運動器材科技研究所 === 103 === Purpose: To explore the effect of baseball bats, under identical moment of inertia (MOI) with various center of mass (COM) and weight on swing performance and muscle activation. Methods: Twelve college Level I baseball male players were recruited as subjects, who performed swing tests under four levels of MOI (very small, small, middle, large) with four different weights of wooden baseball bats and one adjustable COM of customized baseball bat. Each test processed three trials with the subject’s maximal effort. An image analysis system was used to analyze the swing performance, and the muscle activation of four muscle on leading hand was analyzed by electromyography. Results: No significant swing performances were found between the baseball bats of changing COM and weight under identical MOI (p>.05). The faster swing velocity was found along with the smaller MOI (p<.05), and two different types of baseball bat had the same phenomenon. Conclusion: Whether to change the center of mass or weight of baseball bat have the same swing performance, as long as the same moment of inertia.
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author2 |
Chung, Pao Hung |
author_facet |
Chung, Pao Hung Chen, Chun-Yang 陳俊揚 |
author |
Chen, Chun-Yang 陳俊揚 |
spellingShingle |
Chen, Chun-Yang 陳俊揚 THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
author_sort |
Chen, Chun-Yang |
title |
THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
title_short |
THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
title_full |
THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
title_fullStr |
THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
title_full_unstemmed |
THE EFFECT OF CHANGING CENTER OF MASS AND WEIGHT BASEBALL BAT ON SWING PERFORMANCE AND MUSCLE ACTIVATION |
title_sort |
effect of changing center of mass and weight baseball bat on swing performance and muscle activation |
publishDate |
2014 |
url |
http://ndltd.ncl.edu.tw/handle/8cfxmn |
work_keys_str_mv |
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