atividade muscular durante a marcha após acidente vascular encefálico muscle activity during gait following stroke
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2005
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Abstract
OBJETIVO: Buscar parâmetros da marcha de pacientes após ter sofrido acidente vascular encefálico (AVE) com hemiparesia. MÉTODO: Comparados 15 voluntários pós-AVE e 15 voluntários saudáveis com a mesma idade, gênero e peso. A comparação foi feita por eletromiografia utilizando cinco pares de eletrodos de superfície do lado comprometido (espástico) e um eletrogoniômetro sobre o eixo articular de rotação da articulação do tornozelo em estudo. RESULTADOS: O início da atividade eletromiográfica, a partir da fase de apoio, para os músculos glúteo medial, reto femoral, tibial anterior, sóleo, e porção medial dos isquiotibiais foi significantemente ativados anteriormente durante o ciclo da marcha nos voluntários pós-AVE. O final da atividade eletromiográfica para os músculos reto femoral, tibial anterior, sóleo, e porção medial dos isquiotibiais foi significantemente prolongado nos voluntários pós-AVE. Voluntários pós-AVE demonstraram também mais co-ativação dos músculos agonistas e antagonistas da articulação do tornozelo e joelho durante a fase de balanceio. CONCLUSÃO: Essas alterações e co-contrações musculares da marcha permitem que os voluntários pós-AVE adotem um padrão de marcha mais seguro e mais estável para compensar a diminuição da informação sensorial da articulação do tornozelo.
OBJECTIVE: To compare muscle activity and joint moments in the lower extremities during walking between subjects with stroke and control subjects. METHOD: 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. RESULTS: 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. CONCLUSION: 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.
OBJECTIVE: To compare muscle activity and joint moments in the lower extremities during walking between subjects with stroke and control subjects. METHOD: 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. RESULTS: 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. CONCLUSION: 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.
| Reference Key |
corra2005arquivosatividade
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| Authors | ;Fernanda Ishida Corrêa;Flávia Soares;Daniel Ventura Andrade;Ricardo Mitsuo Gondo;José Augusto Peres;Antônio Olival Fernandes;João Carlos Ferrari Corrêa |
| Journal | communications in computer and information science |
| Year | 2005 |
| DOI |
10.1590/S0004-282X2005000500024
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| URL | |
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