| 9～20岁男学生膝关节屈伸肌群力量发育特征研究——以河北省石家庄市学生为例 |
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| 引用本文： | 李立,翟凤鸣,崔巴特尔,陈玉娟.9～20岁男学生膝关节屈伸肌群力量发育特征研究——以河北省石家庄市学生为例[J].北京体育大学学报,2011,34(2):77-79,96. |
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| 作者姓名： | 李立 翟凤鸣 崔巴特尔 陈玉娟 |
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| 作者单位： | 石家庄学院体育系; |
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| 基金项目： | 石家庄学院2009年度团队建设项目; 科研启动基金重点资助项目(课题编号:09TD003) |
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| 摘 要： | 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。
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| 关 键 词： | 膝关节 力量 等速肌力 特征 |
The Study on the Development Characteristic of Flexion and Extension Muscle Strength of Knee Joints in Boys of 9-20 Ages——A Case Study of Students from Shijiazhuang,Hebei Province |
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| LI Li,ZHAI Feng-ming,CUI Ba-ter,CHEN Yu-juan.The Study on the Development Characteristic of Flexion and Extension Muscle Strength of Knee Joints in Boys of 9-20 Ages——A Case Study of Students from Shijiazhuang,Hebei Province[J].Journal of Beijing Sport University,2011,34(2):77-79,96. |
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| Authors: | LI Li ZHAI Feng-ming CUI Ba-ter CHEN Yu-juan |
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| Institution: | LI Li,ZHAI Feng-ming,CUI Ba-ter,CHEN Yu-juan(Department of Physical Education,Shijiazhuang College,Shijiazhuang 050035,Hebei China) |
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| Abstract: | 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(P<0.05),and a highly significant difference in the age of 15～20(P<0.01).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. |
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| Keywords: | knee joints muscle power isokinetic strength characteristic |
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