초록

용어보기논문에서 용어와 풀이말을 자동 추출한 결과로, 시범 서비스 중입니다. AI-Helper

Abstract ▼ AI-Helper

Among several factors that inf1uence running velocity, stride length and stride frequency are the mechanical parameters on which it mostly depends. The best way to develope velocity is accompanied by a combination of increases in both stride length(SL) and stride frequency(SF). But SL is controlled ...

Among several factors that inf1uence running velocity, stride length and stride frequency are the mechanical parameters on which it mostly depends. The best way to develope velocity is accompanied by a combination of increases in both stride length(SL) and stride frequency(SF). But SL is controlled by the length of the lower limb, and SF is controlled by the integrated capability of nerve system. Lengthen SL without delayed time can not be achieved without increased leg velocity. Increasing SF without integrated capability of nerve system is possible for a beginner not for a experienced runner. Studies on which factor would be more important to increase velocity has shown different way. Researchers have been studied with experimental devices which make sprinters possible to run at his(her) supra-maximal velocity(about 3-5% more than ones maximal velocity). Until now the most popular methods to find more critical factor which have been influenced velocity have been: 1) Downhill running, 2) Towing, 3) Treadmill sprinting, 4) Rubber rope horizontal and vertical pulling system using a motor drive. Downhill running has been used largely in the world. But some opponents point out that this system may actually reduce stride length, limiting the pushing phase even if the stride frequency is increased. Towing has been performed with a pacing machine consisting of a tow-bar and handle attached to the rear bumper of an automobile. The application of this method is rather difficult because the arm movements cannot be performed since the hand must grip the handle. Treadmill running has also been used for sprint training. However, no significant effects have been shown. Rubber rope horizontal and vertical pulling system using a motor drive has been used frequently as an overspeed tool. This system offers many difficulties; first the pulling force is not constant being greater at the start and decreasing dramatically as the athletes move forwards. It drives the athlete upwards and forward by means of an elastic rope connected to a motor drive system operating on the ceiling of an indoor hall. However, using the pull up driving equipment part of the load which should stimulate the leg muscle is taken up by the pulling system, decreasing thus the possibility of improving the stimulus which might develop an increase of muscle tone. It is suggested that new method applied to this experiment is suitable to improve both biomechanical parameters and to stress properly the physiological system of the athlete without changing the basic mechanism governing the running pattern.