title: [Muscle activity during gait following stroke].
abstract: OBJECTIVE
  To compare muscle activity and joint moments in the lower extremities during walking between subjects with stroke and control subjects.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Clínica de Fisioterapia, Departamento de Ciências da Saúde, Centro Universitário Nove de Julho, São Paulo, SP, Brasil.
authors.forename: Fernanda Ishida
authors.initials: FI
authors.lastname: Corrêa
authors.forename: Flávia
authors.initials: F
authors.lastname: Soares
authors.forename: Daniel Ventura
authors.initials: DV
authors.lastname: Andrade
authors.forename: Ricardo Mitsuo
authors.initials: RM
authors.lastname: Gondo
authors.forename: José Augusto
authors.initials: JA
authors.lastname: Peres
authors.forename: Antônio Olival
authors.initials: AO
authors.lastname: Fernandes
authors.forename: João Carlos Ferrari
authors.initials: JC
authors.lastname: Corrêa
mesh_terms: D000843:Ankle Joint / Q000503:physiopathology*; D016022:Case-Control Studies; D004576:Electromyography; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology*; D008297:Male; D009128:Muscle Spasticity / Q000503:physiopathology; D010291:Paresis / Q000150:complications / Q000503:physiopathology*; D020521:Stroke / Q000150:complications / Q000503:physiopathology*