Maximum isometric voluntary contraction of ankle dorsiflexors and plantarflexors: comparison of surface electromyography between patients at the acute stage after stroke and age-matched healthy elderly
- VernacularTitle:踝背伸和跖屈肌群的最大等长收缩:脑卒中急性期患者与同龄健康老人表面肌电图对照研究
- Author:
Tiebin YAN
- Publication Type:Journal Article
- Keywords:
Maximum isometric voluntary contraction;
Surface electromyography;
Stroke
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2003;0(04):-
- CountryChina
- Language:Chinese
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Abstract:
Objective To compare muscle function of the ankle dorsiflexors and plantarflexors between stroke patients at the acute stage and age-matched healthy elderly, in an attempt to gain insight for an early rehabilitation program after stroke. Methods Two groups of volunteers participated in the study. One group was 11 healthy elderly aged 62.3?5.7 years and the other was 12 patients with first ever stroke aged 66.6?8.3 years. During measurement, the leg being tested was positioned on a specially designed frame, with a load cell (force sensor) attached to the ball of the foot. Surface electrodes were applied on the skin of both anterior tibialis and gastrocnemius muscles for electromyography (EMG). Torque and integrated EMG during maximum isometric voluntary contraction (MIVC) of the ankle dorsiflexors and plantarflexors were recorded and analyzed. Results There were no significant differences in the MIVC of either ankle dorsiflexion or plantarflexion between the left and right sides of the healthy elderly. However, significant reduction in the ankle dorsiflexion and plantarflexion torques were found in the affected side of stroke patients(P
