ERT(elasticity resistive training)은 힘, 지구력, 순발력 증강을 위해 널리 채용되고 있는 새 트레이닝법이다. 본 연구의 목적은 ERT 장기적응훈련이 다리근력, 지구력 탄성 힘효율이 크게 나타나는지? 또한 근육조직의 여러 특성 변화가 어떻게 나타나는지를 연구하게 되며 아울러 Tubex groups(TG)와 Metal spring groups(M7S)의 탄성힘 트레이닝에 의해 운동효과차이가 어떻게 나타나는지를 상호비교 연구하는데 있다. 양집단 대상의 신체특성인 연령, 키, 몸무게는 각각 TG는 19.4±1.48세, 172.0±2.60㎝, 64.1±8.9㎏과 MSG는 19.4±1.52세, 173.7±4.45㎝, 66.0±4.03㎏ 이었다. 8주간 점증적 부하법(the progressive overload method)에 의해 주간빈도 3일 운동소요 시간은 15∼20분으로 동등한 탄성저항 부하운동을 실행했다. 양집단 실험전후와 실험후 양집단간 평균성적을 비교했고, ANOVA(2×2 repeated measure)분석법에 의해 5% 유의수준에서 통계처리했다. 본 실험에서 획득한 결과는 다음과 같다. TG와 MSG의 실험전후 검사결과는 모두 다리 근힘-속도(leg peak-torque), 다리 신근 지구력(leg extension muscular endurance)에서 유의한 증가가 나타났다(p<.05). 다리 굴근 지구력은 유의하지 않았고 힘의 절대량은 MSG

Elasticity resistance training(ERT) is popular in the improvement of muscular power. The aim of this study was to investigate whether ERT affected leg isokinetic strength and muscle morphological characteristics. Two kinds of ERT such as rubber resistance (Tubex Group; TG) and metal resistance (Metal Spring Group; MSG) were tested for 8-week. The isokinetic strength at the speed of 60。/s, 180。/s, and 240。/s were measured at the Cybex pre to and post 8-week training of either TG or MSG.. Isokinetic leg peak-torque at the speed of 60。/s and 180。/s of TG and MSG were significantly improved(p<.05). Isokinetic leg endurance at the speed of 240。/s of TG and MSG were significantly improved. However, There was no interaction between MSG and TG. At the results of muscle biopsy, the area of all muscle fiber were significantly increased after either TG or MSG with the increase in isokinetic strengths. The diffusion area per capillary was significantly increased at all muscle fibers. Although isokinetic muscle endurance was significantly improved, the diffusion area per capillary was reversely increased. Therefore, the results of the current study were indicated that both TG and MSG significantly affect the improvement of either isokinetic strength and endurance. There was on interaction between TG and MSG.