Abstract

The purpose of this paper was to make a comparative analysis for the difference of the various kinematic variation which is occurred in the each situation when pitchers throw a straight and a curve ball. Four pitchers, who are two national team players and two high level pitchers, were selected among the right over hand pitchers of D university in the Busan for this paper. The data were analyzed by using 3D equipment. The results of the analysis which was about the elapsed time of the pitching, the movement of the body center-point, the highest height of the left knee, stride length, knee joint angle, shoulder joint angle, elbow joint angle and wrist joint angle in the each section(ST, LKU, HBP, LCF, MCP, BRP) were as follows : 1. Pitching time in the each section and step in the pitching for straight and curve ball was similar. The total elapsed time of the straight and curve ball was 1.78${\pm}$0.07sec and 1.77${\pm}$0.11sec in the order. 2. The position change of the body center to the Z(above below) direction did not show significant difference in the each situation of the section and step between pitching for the straight and curve ball. 3. Height of the left knee did not show significant difference as 125.38${\pm}$11.85cm and 124.95${\pm}$11.63m in the each pitching motion for straight and curve ball. The rate(%H) between height and stride length showed 68.42${\pm}$5.53(%H), 68.40${\pm}$5.45(%H) in the each pitching motion. 4. Pitching for curve ball showed longer stride length than pitching for straight ball that as the stride length was 140.35${\pm}$4.96cm and 144.8${\pm}$1.69cm. The rate(%H) between height and stride length showed 76.9${\pm}$3.77(%H), 79.39${\pm}$2.23(%H) in the each pitching motion. 5. Left knee joint angle did not show significant difference in the ST, LKU and HBP section in the each pitching motion. However, it was shown that knee joint angle was flexed much more in the LFC, MCP and BRP section in the pitching for curve ball. 6. Right shoulder joint angle did not show significant difference in the ST, LKU and HSP section. However, when pitches threw a curve ball in the LKU section. In the LFC section, the right shoulder joint angle was extended much more in the pitching for curve ball, and the angle was extended much in the MCP and BRP section in the pitching for curve ball than straight ball. 7. Right elbow joint angle did not show significant difference in the ST, LKU and HRP section in the two pitching motion. The angle had more flexion in the LFC and MCP section in the pitching for curve ball than the pitching for straight ball. The angle in the each pitching motion for straight ball and curve ball were extended by a narrow margin in the BRP section. 8. Right wrist joint angle was extended much more in the LFC and MCP section in the pitching for curve ball. In the BRP section, the angle was extended much more in the pitching for straight ball than curve ball.

Keywords

• Baseball;
• Pitching motion;
• Straight and Curve ball

• 야구;
• 커브투구동작;
• 운동학;

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References

1. 김정주(1989). 야구 선수의 경력에 따른 상지 변화에 대한 의학적 고찰. 경희대학교 대학원 박사학위논문
2. 배원환(1992). 야구 투구의 속도와 제구력에 영향을 미치는 운동역학적인 요인에 관한 연구. 경북대학교 대학원 박사학위논문.
3. 안병화(1992). 야구에서 투구된 공의 궤적에 관한 연구. 한국체육학회 하계학술발표회 논문집, 31, pp.163-166.
4. 안병화, 허구연, 진성태, 최규정, 신동성, 한명우(1997). 야구 투수의 기술의 평가체제 구축을 위한 연구(I). 한국체육과학연구원.
5. 이건범(1998). 초․고등․대학교 투수의 빠른 오버 암 피칭 동작에 대한 운동학적 분석. 서울대학교대학원 박사학위논문.
6. 이영석(1995). 야구와 핸드볼 공던지기 동작의 비교분석. 서울대학교 대학원 석사학위 논문.
7. 이진섭(1994). 투수의 직구와 커브볼 투구시 3차원 영상분석을 통한 상지의 비교. 세종대학교 대학원석사학위논문.
8. 한태륜, 김상규 외(1996). 한국 프로야구 투수의 투구 동작의 동적양상에 대한 분석. 대한스포츠의학회지, 제 1권 14호.
9. Atwater A. E.(1979) : Biomechanics of overarm throwing movements and of throwing injuries. Exerc. Sport SCI Rev 7 : pp.43-85.
10. Elliott, B. C., Gibson, B. a＆ Thurston, B.(1986), A Three-Dimensional Cinematographic Analysis of the Fastball and Curve ball Pitches in Baseball. Inter. J. of Sport Biomechanics, pp.20-28.
11. Elliott, B., Grove, J. R., Gibson, G., ＆ Thurston, B.(1985). A Three-Dimensional Cinematographic Analysis of Baseball Pitching Technique. The Australian Journal of Science and Medicine in Sport, 17(2), pp.18-13.
12. Feltner, M., ＆ Depena, J.(1986). Dynamacs of a the should and the Elbow Joints of the Throwing Arm During a Baseball Pitch. International Journal of Sport Biomechanics, Vol. 2, pp.227-259.
13. Gibson, B. J. ＆ Elliott, b. c.(1987), A T. tree Dimentinal Cinematographic Analysis of Junior Baseball Pitchers, J. of Human Movement Studies, 13 : pp.363-375.
14. Hay, J. G.(1985). Tbe Biomechanics of Sports techniques Englewood Cliffs, New Tersey : Prentice-hall Inc.
15. House, T.(1994), The Piching Edge, Illiniois, Human Kinetics Publisher pp.1-59
16. Pappas, A. M., Zawacki, R. M. ＆ Sullivan, T. J.(1985). Biomechanics of Baseball Pitching, Am. Sport Medicine, pp.216-222.
17. Schatzler, L. L.(1980). A Cinematographic Analysis of Stride Length in Highly Skilled Baseball Pitching, M. S. Thesis University of Arizona.
18. Shinji, S, Yasuo, I, Atsushi, O, Kynosuke, Y, ＆ Shintaro, T(1993), AThree-Demensional Cinematographic Analysis of Upper Limb Movement During Fastball and Curveball Baseball Pitchs, Journal of Applied Biomechanics, 9, pp.47-65.
19. Yuichi Hirano.(1987). Comparative of Study of Pitching Motions Between Skilled and Little League Baseball Pitchers. International Series of Biomechanics, Vol, 6B, pp.649-653.
20. 植屋淸見(1996). 投げにおけるススナップの力學的硏究. 体育學硏究, 5(5), pp.122.

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