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张静云,王莹莹,王春方,孙长城,杜金刚.基于等速技术的健康成人膝关节屈伸肌肌力的年龄和性别特征的研究[J].中国康复医学杂志,2020,(1):54~59
基于等速技术的健康成人膝关节屈伸肌肌力的年龄和性别特征的研究    点此下载全文
张静云  王莹莹  王春方  孙长城  杜金刚
天津中医药大学,天津市,300000
基金项目:
DOI:10.3969/j.issn.1001-1242.2020.01.011
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摘要:
      摘要 目的:应用等速技术研究200例健康成人膝关节屈伸肌肌力的年龄和性别特征,为膝关节运动功能的康复提供参考依据。 方法:将200例健康成人按性别分组,再按年龄分为20—29岁、30—39岁、40—49岁、50—59岁、60—70岁5组,共10组,每组20例。对所有受试者进行膝关节的等速向心肌力测试,采集屈伸肌最大峰力矩值(PT)、屈伸肌相对峰力矩(PT/BW)和屈伸肌峰力矩比值(F/E)指标。利用Pearson相关系数分析各测试指标与年龄的相关性,采用独立样本t检验分析不同性别组内相邻两年龄组之间的差异性。 结果:①膝关节屈伸肌PT值、PT/BW值及屈伸肌峰力矩比值F/E均与年龄之间具有显著相关性(P<0.01)。②男性屈伸肌PT值和PT/BW值40岁以后下降显著(P<0.05);F/E值60岁以后显著增加(P<0.05)。③女性屈肌PT值在20—70岁之间呈缓慢下降趋势;屈肌PT/BW值与伸肌PT值60岁以后下降明显(P<0.05);伸肌PT/BW值分别于30岁和60岁以后下降明显(P<0.05);F/E值20—70岁呈平稳增长趋势。④同一年龄段男性屈伸肌PT值与PT/BW值均大于女性(P<0.05),F/E无显著差异(P>0.05)。 结论:膝关节屈伸肌肌力具有显著的年龄和性别特征。膝关节屈伸肌肌力随年龄增长呈下降趋势,40岁以后下降更加明显且屈伸肌肌力下降呈现不平衡现象,伸肌较屈肌下降显著。
关键词:膝关节  等速肌力  年龄  性别
Age and gender characteristics of knee muscle strength based on isokinetic technique    Download Fulltext
Tianjin University of Traditional Chinese Medicine, Tianjin,300000 and Tianjin University of Traditional Chinese Medicine, Tianjin,300000
Fund Project:
Abstract:
      Abstract Objective:To investigate the age and gender characteristics of knee muscle strength of 200 healthy adults based on isokinetic technique and to provide a reference for the rehabilitation of knee joint motor function. Method:Totally 200 healthy adults were assigned to 10 groups according to their age and gender, including 20—29 yr old, 30—39 yr- old, 40—49 yr old, 50—59 yr old, and 60—70 yr- old. There were 20 cases for each group. Knee muscle strength of all subjects were tested using isokinetic concentric muscle test. The maximum peak torque(PT), relative peak torque (PT/BW) and peak torque ratio (F/E) were collected. Correlation analysis of the above test index and age was performed using the Pearson coefficient. Differences between the adjacent age groups of different genders were performed using independent sample t test analysis. Result:①There was a significant correlation between age and PT,PT/BW and F/E value of knee extensor and flexor (P<0.01). ②PT and PT/BW value of flexor and extensor decreased significantly after 40 years old (P<0.05) in male. The F/E value was increased significantly after 60 years old (P<0.05) in male. ③The PT value of flexor showed a slow decline between 20 and 70 years old in female. The PT/BW value of flexor and PT value of extensor decreased significantly after 60 years old (P<0.05) in female. The PT/BW value of extensor decreased significantly after 30 and 60 years old (P<0.05) in female. The F/E values between 20 and 70 years old showed a steady growth trend in female. ④In the same age group, both PT and PT/BW values of extensor and flexor of male were higher than those of female (PP<0.05), and there was no significant difference in F/E (P>0.05). Conclusion:Knee flexor and extensor muscle strength showed significant difference in different age and gender groups. The flexor and extensor muscle strength of knee decreased with age, especially after age 40. Moreover, the flexor and extensor muscle strength of knee decreased unevenly, and the extensor strength decreased more obviously than flexor.
Keywords:knee  isokinetic muscle strength  age  gender
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