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NTIS 바로가기디지털융복합연구 = Journal of digital convergence, v.14 no.12, 2016년, pp.525 - 535
The purpose of this study was to evaluate the effect of thoracic dynamic stretching with elastic band on the ROM and ball speed for baseball player. For this purpose, 11 baseball players of the I city high school and university performed thoracic dynamic stretching with elastic band before throwing ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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투수에게 필요한 운동 능력은? | 야구경기에서 가장 중요하고 많이 사용되는 동작은 던지기이며, 경기 중 70% 이상을 차지한다[1]. 그 중 투수에 의해 수행되는 투구는 경기 승패의 약 80%를 차지할 만큼 매우 중요한 요인이 되기 때문에[2], 투수는 훈련을 통해 제구력과 빠른 구속향상을 필요로 하며, 빠른 직구를 정확한 제구력과 함께 경기 내내 꾸준하게 유지토록 해야 한다. 특히,Stodden et al. | |
오버핸드 투수의 경우 스텝과 허리회전이 공 속도에서 차지하는 비율은 어느 정도인가? | 투수의 투구동작은 다리와 허리의 파워 존에서 시작되며, 투구에서 발생하는 힘의 50% 이상을 제공하게 된다[5]. 특히 오버핸드 투수의 경우 공 속도의 46.9%가 스텝과 허리회전에서 비롯된다[6]. 그러므로 투구 동작시 구속증가를 위해서는 신체 각 분절들의 협응동작이 필요하며, 특히 상체 분절 동작은 하지 분절과 몸통이 조화를 이룰 수 있도록 적절한 리듬과 타이밍이 이루어져야 하며[7], 이를 위해서는 유연성, 파워, 근력의 조화가 필요하다[8,9] | |
동체 PNF 스트레칭 실시 후, 동체 관절가동범위와 구속을 측정한 결과는 어떠하였는가? | 이를 위하여 현재 I 광역시 소재 고등학교 소속 야구선수 11명을 대상으로 동체 PNF 스트레칭을 던지는 팔을 중심으로 전방 및 후방향으로 각 30회 실시한 후 동체 관절가동범위와 구속을 측정하였으며, 결과는 다음과 같다. 첫째, 동체 PNF 스트레칭 운동 후 동체 관절가동범위는 유의한 증가를 보였다. 둘째, PNF 스트레칭 운동 후 최고, 최저 및 평균구속은 유의하게 증가하였다. 셋째, PNF 동체스트레칭 운동 후 선수들의 투구시 힘듦 정도는 유의하게 감소하였다. 이러한 결과는 야구선수들의 탄력밴드를 이용한 1회성 동체 PNF 스트레칭 운동을 통해 ROM 증가 및 구속증가를 기대할 수 있음을 나타낸다. |
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