青棒投手不同投球法之投球速度與身體組成的相關性之研究

The Relationship between Pitching Velocity and Body Composition in High School Baseball Players

莊林貴(Lin-Guey Juang) ； 林啟川(Chi-Chuan Lin) ； 蘭震輝(Cheng-Hui Lan) ； 王建邦(Chien-Pang Wang)

《北體學報》 10期 (2002/11) Pp. 73-81

https://doi.org/10.6167/TPEC/2002.10.6

摘要

The purpose of this study was to investigate the relationship between throwing velocity, lower extremity muscle strength, and body composition for baseball pitchers. Twenty-three young male baseball pitchers participated in this study (age 17.09±0.73 year old). Subjects were tested for throwing velocity with wind-up and set position, and knee flexor/extensor muscle strength at 60, 180 and 300degree/sec on an isokinetic equipement. The results shows the throwing velocity of wind-up and set position were 128.09±4.94 and 127.39±5.35km/h respectively, and significant difference between both was observed (p＜0.05). Significant correlation was found between throwing velocity and body composition. The magnitude of correlation coefficient with throwing velocity was in the order of body weight, fat free mass, % fat, fat content, BMI, and height. Our results showed that significant correlation was also observed between the throwing velocity of wind-up and set position and body composition, in the order of body weight, % fat, fat content, fat free mass, height, and BMI. We conclude that pitcher may perform wind-up pitching when the base was not occupied. Additionally, throwing velocity appears to be associated with pitcher's body composition. In this regard, we conclude that pitcher nutritional management for maintaining appropriate body composition is important for the purpose of pitching performance.

關鍵字

身體組成 ； 投手 ； 揮臂式投球速度 ； 固定式投球速度

並列摘要

The purpose of this study was to investigate the relationship between throwing velocity, lower extremity muscle strength, and body composition for baseball pitchers. Twenty-three young male baseball pitchers participated in this study (age 17.09±0.73 year old). Subjects were tested for throwing velocity with wind-up and set position, and knee flexor/extensor muscle strength at 60, 180 and 300degree/sec on an isokinetic equipement. The results shows the throwing velocity of wind-up and set position were 128.09±4.94 and 127.39±5.35km/h respectively, and significant difference between both was observed (p＜0.05). Significant correlation was found between throwing velocity and body composition. The magnitude of correlation coefficient with throwing velocity was in the order of body weight, fat free mass, % fat, fat content, BMI, and height. Our results showed that significant correlation was also observed between the throwing velocity of wind-up and set position and body composition, in the order of body weight, % fat, fat content, fat free mass, height, and BMI. We conclude that pitcher may perform wind-up pitching when the base was not occupied. Additionally, throwing velocity appears to be associated with pitcher's body composition. In this regard, we conclude that pitcher nutritional management for maintaining appropriate body composition is important for the purpose of pitching performance.

並列關鍵字

body composition ； pitcher ； throwing velocity ； set position ； wind-up position

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