青棒投手不同投球法之投球速度與肩關節等速肌力的相關性之研究

The Relationship between Throwing Velocity and Upper Extremity Isokinetic Strength for Baseball Pitcher

莊林貴(Lin-Guey Juang) ； 蔡一鳴(Yi-Ming Tsai) ； 曾慶裕(Ching-Yu Tseng) ； 王秀銀(Yin-Wang Hsiu)

《北體學報》 10期 (2002/11) Pp. 83-92

https://doi.org/10.6167/TPEC/2002.10.7

摘要

The purpose of this study was to analyze the relationship between throwing velocity and shoulder strength for baseball pitcher. Twenty-three young male baseball pitchers participated in this study (average age 17.09±0.73 yrd). Subjects were tested for throwing velocity with wind-up and set position, and shoulder abduction/adduction, flexion/extension, and internal/external rotation in the 90 degree abducted position isokinetics muscle strength at 60, 180 and 300 degree/sec. The results showed that the throwing velocity of wind-up and set position were 128.09±4.94 and 127.39±5.35km/h respectively, and significantly difference was observed (p＜0.05). Significantly correlations between throwing velocity and the following muscle strength variables including arm shoulder adduction at 60 degree/sec, extension at 300 degree/sec. We also observed correlation between throwing velocity and extension isokinetics strength in non-throwing arm, including abduction at 60 degree/sec, adduction at 180 degree/sec and at 300 degree/sec (p＜0.05). We conclude that pitching with wind-up position will be good choice for enhancing pitching speed when the base has not occupied. This conclusion is based on our current test result. In which, the experimental setting for isokinetic testing was simulating the accelerating position during early phase of ball throwing for elite pitcher. During real competition, performing pitching requires axial rotation to accelerate the ball to maximal speed thru abduction of the arm. The current study also tested isokinetic strength for internal rotation position. This position is important only for elite pitchers when they accelerating in late phase of ball throwing by recruiting abdominal muscles.

關鍵字

投手 ； 投球速度 ； 等速肌力 ； 肩關節

並列摘要

The purpose of this study was to analyze the relationship between throwing velocity and shoulder strength for baseball pitcher. Twenty-three young male baseball pitchers participated in this study (average age 17.09±0.73 yrd). Subjects were tested for throwing velocity with wind-up and set position, and shoulder abduction/adduction, flexion/extension, and internal/external rotation in the 90 degree abducted position isokinetics muscle strength at 60, 180 and 300 degree/sec. The results showed that the throwing velocity of wind-up and set position were 128.09±4.94 and 127.39±5.35km/h respectively, and significantly difference was observed (p＜0.05). Significantly correlations between throwing velocity and the following muscle strength variables including arm shoulder adduction at 60 degree/sec, extension at 300 degree/sec. We also observed correlation between throwing velocity and extension isokinetics strength in non-throwing arm, including abduction at 60 degree/sec, adduction at 180 degree/sec and at 300 degree/sec (p＜0.05). We conclude that pitching with wind-up position will be good choice for enhancing pitching speed when the base has not occupied. This conclusion is based on our current test result. In which, the experimental setting for isokinetic testing was simulating the accelerating position during early phase of ball throwing for elite pitcher. During real competition, performing pitching requires axial rotation to accelerate the ball to maximal speed thru abduction of the arm. The current study also tested isokinetic strength for internal rotation position. This position is important only for elite pitchers when they accelerating in late phase of ball throwing by recruiting abdominal muscles.

並列關鍵字

pitcher ； throwing velocity ； isokinetics ； strength ； shoulder

參考文獻

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