Muscular performances at the ankle joint in young and elderly men.
Muscular performances at the ankle joint in young and elderly men.
复制标题
年轻和老年男性踝关节的肌肉表现。
DOI：
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. van Hoecke
中科院分区：
文献类型：
--
作者：
E. Simoneau;Alain Martin;J. van Hoecke
在 11 名年轻男性（平均年龄 24 岁）和 12 名老年男性（平均年龄 77 岁）中研究了衰老对踝关节肌肉机械和肌电图特征的影响。在踝关节跖屈和背屈期间测量最大和次最大等长自愿扭矩。记录小腿三头肌和胫骨前肌的肌电活动。老年人组的最大背屈扭矩相等（42 vs 45 N.m，p > 0.05），但在跖屈方面，老年人组较年轻人弱（80 vs 132 N.m，p <.001），并且抽搐幅度减小（11 vs 16 N.m），共激活较低（8% vs 15%）。我们在共激活百分比和产生的合成扭矩之间建立了线性关系。我们的结果表明，与跖屈肌相反，背屈肌不受衰老的影响，足底屈肌扭矩的下降部分是由外周水平的变化引起的。
The effect of aging on mechanical and electromyographic characteristics of ankle joint muscles was investigated in 11 young (mean age 24 years) and 12 elderly (mean age 77 years) males. Maximal and submaximal isometric voluntary torques were measured during ankle plantarflexion and dorsiflexion. Electromyographic activities of triceps surae and tibialis anterior muscles were recorded. The elderly group developed equal maximal dorsiflexion torques (42 vs 45 N.m, p >.05), but in plantarflexion, the elderly group was weaker (80 vs 132 N.m, p <.001) and presented a decreased twitch amplitude (11 vs 16 N.m) and lower coactivation (8% vs 15%) than that of the young adults. We established a linear relationship between the percentage of coactivation and developed resultant torque. Our results showed that dorsiflexor muscles were not affected by aging, contrary to plantarflexors, in which the decline in torque was partly explained by changes intervening at the peripheral level.
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老年人充分激活肱二头肌的能力下降。
DOI：
10.1093/gerona/54.5.m249
发表时间：
1999
期刊：
The journals of gerontology. Series A, Biological sciences and medical sciences
影响因子：
--
作者：
Yue,GH;Ranganathan,VK;Siemionow,V;Liu,JZ;Sahgal,V
通讯作者：
Sahgal,V
影响因子：
3.3
作者：
Keenan, KG;Farina, D;Enoka, RM
通讯作者：
Enoka, RM
影响因子：
3.3
作者：
Kent-Braun, JA;Ng, AV;Young, K
通讯作者：
Young, K
影响因子：
3.3
作者：
Kent-Braun, JA;Ng, AV;Towse, TF
通讯作者：
Towse, TF