肌力论文：膝关节屈伸肌力变化对平衡能力的影响
【中文摘要】研究:本文通过研究膝关节屈伸肌力变化对人体平衡能力的影响,揭示膝关节肌肉力量变化与平衡能力关系的内在规律,为运动训练和运动损伤预防提供理论依据和实践指导。研究方法:24名非体育专业学生随机分为4组,每组6人,分别为屈伸组、屈肌组、伸屈组、伸肌组,进行12周膝关节的肌肉力量训练,其中屈伸组前6周进行屈肌力量训练,后6周进行伸肌力量训练,屈肌组12周都进行屈肌力量训练,伸屈组前6周进行伸肌力量训练,后6周进行屈肌力量训练,伸肌组12周都进行伸肌力量训练,在训练前、训练6周后、训练12周后分别测试每组的膝关节前群肌和后群肌的肌肉力量、静态平衡能力、动态平衡能力;肌肉力量采用Con-trex多关节等速肌力测试与训练系统进行测试,静态平衡能力采用三维测力台进行测试,动态平衡采用米字格进行测试,所测数据采用SPSS11.5统计软件包进行分析,训练前后各指标比较采用方差分析。研究结果:膝关节12周肌肉力量训练后,屈伸组、屈肌组、伸屈组、伸肌组肌肉力量均增加,屈伸组屈伸肌力比先增大后减小,屈肌组屈伸肌力比一直增大,伸屈组屈伸肌力比先减小后增大,伸肌组屈伸肌力比一直减小;单脚睁眼静态平衡能力,屈伸组12周训练后(与6周训练后相比)y方向上最大动摇轨迹显著性增加,屈肌组12周训练后(与6周训练后相比)指标总轨迹长和x方向上总轨迹长显著性下降,伸屈组6周训练后(与训练前相比)y方向上轨迹长显著性增加,伸肌组,12周训练后(与6周训练后
相比)y方向上最大动摇轨迹显著性增加;单脚闭眼静态平衡能力,屈伸组6周训练后(与训练前相比)包络面积显著性下降,屈肌组12周训练后(与6周训练后相比)x方向上总轨迹长显著性下降;动态平衡能力,屈伸组12周训练后(与6周训练后相比)LAM和MLAM显著性增加,伸屈组6周训练后(与训练前相比)LPM和MLPM显著性增加,12周训练后(与6周训练后相比)指标LM显著性增加。研究结论:(1)膝关节屈肌群训练,屈肌群力量增加的同时伸肌群力量也增加,屈伸肌力比增加,单脚睁眼和闭眼静态平衡能力增强,单脚动态平衡能力随屈肌群力量增加而增强,但超过一定的范围增加不明显。(2)膝关节伸肌群训练,伸肌群力量增加而屈肌群力量并不增加,屈伸肌力比下降,单脚睁眼静态平衡能力下降,单脚闭眼静态平衡和单脚动态平衡能力变化不明显。
【英文摘要】Purposes:Through researching effect of change of flexor and extensor muscle on balance ability, reveal internal relationships between change of muscle strength and balance ability and provide theory and practice aid for movement training and Athletic Injuries.Methods:There are twenty-four students come from non-sports professionals, they were randomly divided into four groups, were group of flexion and extension, group of flexion, group of extension and flexion, group of extension, they were going on exercising twelve weeks, for group of flexion and extension exercises flexor for six
weeks and exercise extensor for six weeks, for group of flexion exercises flexor for twelve weeks, for group of extension and flexion exercises extensor for six weeks and exercise flexor for six weeks, for group of extension exercises extensor for twelve weeks, after six weeks and after twelve weeks , testing muscle strength、static balance ability and dynamic balance ability of four group; muscle strength was tested by Multi-joint isokinetic muscle strength measurement and training system of Con-trex, static balance ability was tested by Three-dimensional force Platform, dynamic balance ability was tested by SEBT(Star Excursion Balance Test), data Processing was analyzed through Statistical software SPSS11.5, Samples before and after training with analysis of
variance.Results:After training twelve weeks , the strength of muscle have increased, the group of flexion and extension, ratio of hamstring to quadriceps femoris strength increases in the first six weeks, decreasing in the second six weeks; the group of flexion, ratio of hamstring to quadriceps femoris strength always increases; the group of extension and flexion, ratio of hamstring to quadriceps femoris strength decreases in the first six weeks, increasing in the second six weeks; the group of always extension, ratio of hamstring to quadriceps
femoris strength always decreases. Static balance ability of one leg with eyes open, the group of flexion to extension, compared to the first six weeks, the maximum destabilize path of direction of y increases significantly in the second six weeks; the group of flexion, compared to the first six weeks, general length of path and the general of path in direction of x decrease in the second six weeks; the group of extension to flexion, compared to no training, general length of path in direction of y increases significantly in the first six weeks; the group of extension, compared to the first six weeks, the maximum destabilize path increases significantly. The static ability of one leg with eyes close, the group of flexion and extension, compared to no training ,area decreases
significantly after training in the first six weeks; the group of always flexion ,compared to the first six weeks, general length of path decreases significantly after training in the second six weeks. Dynamic balance ability, the group of flexion to extension, compared to training after the first six weeks, length of in the direction of AM and mean of the length of in the direction of AM increase significantly after training in the second six weeks; the group of extension to flexion, compared to no training, length of in the direction of PM and
mean of the length of in the direction of PM increase significantly after training in the first six weeks, compared to after training in the first six weeks, length of in the direction of M increases significantly after training in the second six weeks.Conclusion:(1) After training of flexor muscle strength, flexor muscle strength increased, at the same time the strength of extensor muscle increased, ratio of hamstring to quadriceps femoris strength increases, the static balance ability of one leg with eyes open and close increased, dynamic balance ability of one leg increased as increasing of flexor muscle strength, but increasing implicitly over a certain range.(2) After training of extensor muscle strength, extensor muscle strength increased, but flexor muscle strength didn’t increased, ratio of hamstring to quadriceps femoris strength decreased, the static balance ability of one leg with eyes open decreased, the static balance ability of one leg with eyes close and dynamic balance ability of one leg changed implicitly.
【关键词】肌力 屈伸肌力比 平衡能力 静态平衡 动态平衡 【英文关键词】muscle strength ratio of hamstring to quadriceps femoris strength balance ability static balance dynamic balance
【目录】膝关节屈伸肌力变化对平衡能力的影响【备注】索购全文在线加好友
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Abstract7-9
1. 序言1.2 文献综述2.1 研究对象3. 研究结果26-37
3.1
1.1 选题依据10-112. 对象与方法22-262.2 研究方法22-26
肌肉力量的变化26-2929-3437-42
3.2 静态平衡能力的变化
34-37
4. 讨论4.2 屈伸肌
3.3 动态平衡能力的变化
4.1 肌力训练对肌肉力量的影响37
力比对静态平衡能力的影响37-40衡能力的影响40-4243-47
4.3 屈伸肌力比对动态平
6. 参考文献
8. 英
5. 结论42-43
7. 攻读学位期间公开发表的论文47-48
9. 致谢49-50
文缩略词48-49
