Corrêa Fernanda Ishida, Soares Flávia, Andrade Daniel Ventura, Gondo Ricardo Mitsuo, Peres José Augusto, Fernandes Antônio Olival, Corrêa João Carlos Ferrari
Clínica de Fisioterapia, Departamento de Ciências da Saúde, Centro Universitário Nove de Julho, São Paulo, SP, Brasil.
Arq Neuropsiquiatr. 2005 Sep;63(3B):847-51. doi: 10.1590/s0004-282x2005000500024. Epub 2005 Oct 18.
To compare muscle activity and joint moments in the lower extremities during walking between subjects with stroke and control subjects.
We compared fifteen healthy volunteers and fifteen stroke patients, with the same age gender and weight data had been compared by electromyography. The system of signals acquisition used consisted of five pairs of electrodes of surface, beyond one electrogoniometer on the axis articulate of rotation of the joint of the ankle in study.
Onset times with respect to heel-strike for the medial gluteus, tibialis anterior, soleus, rectus femoris and medial hamstring muscles were significantly earlier during the gait cycle in subjects with stroke than in control subjects. The cessation times of soleus, tibialis anterior, rectus femoris, and medial hamstring muscles were significantly prolonged in subjects with stroke.
Subjects with stroke showed more co-contractions of agonist and antagonist muscles at the ankle and knee joints during stance phase. These gait changes and co-contractions may allow subjects with stroke to adopt a safer, more stable gait pattern to compensate for diminished sensory information from the ankle.
比较中风患者与对照受试者在行走过程中下肢的肌肉活动和关节力矩。
我们比较了15名健康志愿者和15名中风患者，通过肌电图对年龄、性别和体重数据相同的情况进行了比较。所使用的信号采集系统由五对表面电极组成，此外还有一个位于所研究踝关节旋转关节轴上的电子测角仪。
在步态周期中，中风患者的臀中肌、胫骨前肌、比目鱼肌、股直肌和半腱肌相对于足跟撞击的起始时间明显早于对照受试者。中风患者的比目鱼肌、胫骨前肌、股直肌和半腱肌的停止时间明显延长。
中风患者在站立期踝关节和膝关节处的主动肌和拮抗肌出现更多的共同收缩。这些步态变化和共同收缩可能使中风患者采用更安全、更稳定的步态模式，以补偿来自踝关节的感觉信息减少。
