성인남자에서 등척성 근력과 등속성 근력에 관한 비교 연구

A study of comparison on the isometric and isokinetic muscular strength in collegiate students

&nbsp;&nbsp;The purpose of this study was to evaluate the difference of isometric and isokinetic muscular strength in collegiate athletes and general students. Sixty players(15 basketball players, 15 icehockey players, 15 baseball players, 15 soccer players) and fifteen volunteered male students were measured using versatile muscle power measuring system and Cybex 770 dynamometer. Grip strength, arm strength and leg strength were measured for isometric muscular strength. And flexion and extension of shoulder, elbow and knee at 60deg/sec(5 repetitions), 180deg/sec(5 repetitions) were measured for isokinetic muscular strength.<BR>&nbsp;&nbsp;The results were as follows:<BR>&nbsp;&nbsp;1. Among isometric muscular strength, the highest grip strength was 47.8㎏ in baseball players, the highest arm strength(flexion and extension) were 18.4㎏, 33.4㎏ in icehockey players, the highest leg flexion strength was 29.2㎏ in icehockey players and leg extension strength was 69.0㎏ in baseball players.<BR>&nbsp;&nbsp;2. Among isokinetic muscular strength, the highest peak torque at 60deg/sec among groups were as follows : shoulder flexion in icehockey players(72.6Nm), extension in baseball players(82.4Nm) : elbow flexion and extension in icehockey players(60.1Nm, 76.7Nm) players(82.4Nm) : knee flexion in basketball players(146.0Nm), extension in icehockey players(239.3Nm).<BR>&nbsp;&nbsp;3. The highest average power at 180deg/sec among groups were as follows : shoulder flexion and extension in baseball players(106.0watt, 121.5watt) : elbow flexion and extension in basketball players(69.1watt, 99.7watt): knee flexion and extension in basketball players(197.7watt, 321.7watt).<BR>&nbsp;&nbsp;4. There were significant in coefficiency correlationship(r=0.468) between isometric arm flexion strength and isokinetic peak torque of elbow. And the coefficiency correlationship between isometric arm flexion strength and isokinetic peak torque of shoulder was 0.344. The coefficiency correlations hip between isometric left leg flexion and extension strength and isokinetic peak torque of knee flexion and extension were 0.460, 0.562 respectively.