title: Relationships between muscular torque and gait speed in chronic hemiparetic subjects.
abstract: OBJECTIVE
  To identify which paretic and non-paretic muscular groups of the lower limbs were the best predictors of gait speed in chronic hemiparetic subjects.
  
  
  METHODS
  Twelve hemiparetic subjects with ages ranging from 65 to 75 years (70.67 +/- 3.31 years) were included in this cross-sectional study. All participants had time since onset of stroke of at least six months and the ability to walk independently. Main outcome measures included self-selected gait speed and maximum isometric torques of both the paretic and non-paretic lower limbs. Pearson's correlation coefficients and stepwise regression analysis were employed to investigate the level of associations between the outcome variables.
  
  
  RESULTS
  Mean gait speed was 0.65 +/- 0.33 ms(-1). There were significant differences (p < 0.01) in torques values between paretic and non-paretic lower limbs for all assessed muscular groups. Stepwise regression analysis revealed that the most important independent variable for predicting gait speed was the isometric torque of paretic knee flexors ([image omitted] ). No significant associations were found between any torque values of the non-paretic side and gait speed.
  
  
  CONCLUSIONS
  The paretic knee flexors were shown to play an important role in predicting gait speed after stroke, but no influences were found for the muscular groups of the non-paretic side. Therefore, findings of the present study suggest that paretic knee flexors torque should be addressed in rehabilitation programmes aiming to improve gait speed after stroke.
authors.affiliation: Department of Physical Therapy, Universidade Federal de Minas Gerais, Brazil.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Nasciutti-Prudente
authors.forename: Fabiana G
authors.initials: FG
authors.lastname: Oliveira
authors.forename: Sandra F
authors.initials: SF
authors.lastname: Houri
authors.forename: Fatima Rodrigues
authors.initials: FR
authors.lastname: de Paula Goulart
authors.forename: Miguel H
authors.initials: MH
authors.lastname: Neto
authors.forename: Luci Fuscaldi
authors.initials: LF
authors.lastname: Teixeira-Salmela
mesh_terms: D000368:Aged; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D005260:Female; D020233:Gait Disorders, Neurologic / Q000503:physiopathology*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008297:Male; D018482:Muscle, Skeletal / Q000503:physiopathology*; D010291:Paresis / Q000503:physiopathology*; D012044:Regression Analysis; D019415:Torque