코어운동을 병행한 스프린트와 점프 트레이닝이 중학교 야구선수의 근력, 근파워 및 배트 스윙 속도에 미치는 영향
Effects of Sprint and Jump Training with Core Exercise on Muscular Strength, Muscular Power, and Bat Swing Velocity in Middle-School Baseball Players
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초록
본 연구는 중학생 야구선수(실험집단 10명, 통제집단 10명)를 대상으로 코어운동을 병행한 스프린트 및 점프 트레이닝이 근력과 근파워 및 배트 스윙 속도에 미치는 영향을 알아보고, 트레이닝에 따른 근력, 근파워의 변화가 배트 스윙 속도의 변화와 상관관계가 있는지를 분석하는데 목적이 있다. 실험집단은 코어운동을 병행한 스프린트 및 점프 트레이닝을 8주, 주 2-5회, 회당 약 40-60분 간 실시하였으며, 통제집단은 동일한 기간에 기존 전통적인 트레이닝(저항운동 및 인터벌 트레이닝)을 실시하였다. 두 집단 모두 트레이닝 전과 후 등속성 근력으로 각근력과 요부관절 근력을 측정하였고, 근파워는 윈게이트 테스트와 서전트 점프 및 제자리멀리뛰기를 측정하였으며, 배트 스윙 속도를 측정하였다. 트레이닝 후 실험집단은 통제집단에 비해 우측 슬관절의 체중 당 최대 신전 근력(p=.042), 요부관절의 체중 당 최대 신전 근력(p=.049), 서전트 점프(p=.046) 그리고 배트 스윙 속도(p=.019)가 유의하게 개선되었다. 트레이닝 후 체중 당 요부 굴근(r=.713, p=.021)과 신근의 변화(r=.669, p=.034), 체중 당 최대파워의 변화(r=.678, p=.031) 그리고 서전트 점프의 변화(r=.651, p=.042)는 배트 스윙 속도의 변화와 유의한 정 상관관계를 보였다. 따라서 코어운동을 병행한 스프린트 및 점프 트레이닝은 중학생 야구선수의 근력과 근파워를 향상시키며, 트레이닝에 따른 근력과 근파워의 향상은 배트 스윙 속도의 향상과 관련성이 있는 것으로 사료된다. 추후 본 연구의 결과를 확인할 수 있는 후속 연구가 필요하겠다.
Abstract
We investigated the effects of sprint and jump training with core exercise on muscular strength, muscular power, and bat swing velocity in middle-school baseball players. Twenty middle-school baseball players participated in the study. The experimental group (n=10) received a sprint and jump training with core exercise 2-5 times a week for 8 weeks and the control group (n=10) received a traditional training with resistance and interval training 5 times a week for 8 weeks. We measured isokinetic muscular strength of knee and lumber as indexes of muscular strength. Muscular power was assessed by Wingate test, sergeant jump, and standing long jump. The bat swing velocity was also measured. After intervention period, peak torque % body weight of right knee extensor (p=.042) and peak torque % body weight of lumbar extensor (p=.049), sergeant jump (p=.046), and bat swing velocity (p=.019) were significantly improved in the experimental group compared with the control group. Also, there were a significantly positive association between change in peak torque % body weight of lumbar flexor (r=.713, p=.021) and extensor (r=.669, p=.034), peak power % body weight (r=.678, p=.031), and a sergeant jump (r=.651, p=.042) and change in bat swing velocity. These findings suggest that a sprint and jump training with core exercise may improve muscular strength, muscular power, and bat swing velocity. In addition, increased muscular strength and muscular power may improve bat swing velocity in middle-school baseball players. But additional research is needed to confirm this finding with a larger sample.
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