CAJ | 학술논문

目的：通过对9～20岁男生双侧膝关节进行等动肌力测试,探讨青少年膝关节屈伸肌群力量发育特征。方法：运用Kinitech等动测力系统对研究对象双侧膝关节进行60°/s、120°/s、240°/s三种速度的测试。结果：青少年男子膝关节屈伸肌PT值随年龄的增大而增大,不存在某个年龄段快速增长的现象,在同一年龄膝关节屈伸肌PT值均随测试速度的增加而减小;相同年龄男生比较,在同一速度下同侧屈伸肌有较大差异,且在各年龄段伸肌的PT值均大于屈肌,在60°/s下,差异在9～14岁有显著性（P〈0.05）,在15～20岁有高度显著性（P〈0.01）,在120°/s测试条件下,左侧差异在14～20岁表现出显著性,右侧差异在15～20岁表现出显著性;同一测试速度下同年龄异侧同名肌比较差异均无显著性;在同一测试速度下,H/Q值随年龄的增加显示出减小的趋势;同年龄段男生的H/Q值随速度的增加逐渐增大。结论：9～20岁男子膝关节屈伸肌群力量均随年龄的增大而增大,但表现出随年龄增长屈伸肌力比H/Q值呈递减的趋势,形成随年龄增大屈伸肌群力量差距增大的现象。
목적：통과대9～20세남생쌍측슬관절진행등동기력측시,탐토청소년슬관절굴신기군역량발육특정。방법：운용Kinitech등동측력계통대연구대상쌍측슬관절진행60°/s、120°/s、240°/s삼충속도적측시。결과：청소년남자슬관절굴신기PT치수년령적증대이증대,불존재모개년령단쾌속증장적현상,재동일년령슬관절굴신기PT치균수측시속도적증가이감소;상동년령남생비교,재동일속도하동측굴신기유교대차이,차재각년령단신기적PT치균대우굴기,재60°/s하,차이재9～14세유현저성（P〈0.05）,재15～20세유고도현저성（P〈0.01）,재120°/s측시조건하,좌측차이재14～20세표현출현저성,우측차이재15～20세표현출현저성;동일측시속도하동년령이측동명기비교차이균무현저성;재동일측시속도하,H/Q치수년령적증가현시출감소적추세;동년령단남생적H/Q치수속도적증가축점증대。결론：9～20세남자슬관절굴신기군역량균수년령적증대이증대,단표현출수년령증장굴신기력비H/Q치정체감적추세,형성수년령증대굴신기군역량차거증대적현상。
Purpose： The purpose of this paper is to study the development characteristic of knee joints in ordinary juvenile boys aged from 9 to 20.Method： Isokinetic strength test is used to study the flexion and extension muscle of knee joints of both sides at the speed of 60°/s,120°/s and 240°/s.Results： The peak torque of muscles increased with the increasing ages,while rapid growth in a certain age does not exist.In the same age,the PT of muscles decreased with the increasing ages;At the same speed,the PT of extension muscles is bigger than that of flexion;In the speed of 60°/s,there is a significant difference in the age of 9～14（P0.05）,and a highly significant difference in the age of 15～20（P0.01）.In the speed of 120°/s,there is a significant difference in the age of 14～20 in left side and in the age of 15～20 in right side.In the same speed,there is no disparity between different sides in same age.The H/Q value decreased with increasing age and at the same age,the H/Q value increased with the increasing speed.Conclusion：The muscle strength and power all increased with the increasing ages,while the H/Q value decreased,suggesting the strength gap of flexion and extension muscle increased with the increase of age.