title: [Evolution of locomotion disorders in Huntington's disease].
abstract: BACKGROUND
  Locomotion disorders are important in Huntington's disease (HD). Although the rates of evolution of motor, functional or cognitive aspects of HD have been studied, the evolution of locomotion disorders in early stages of the disease remains unknown.
  
  
  OBJECTIVE
  To determine the rate of evolution of the HD-associated gait and gait initiation disorders and their correlates.
  
  
  METHODS
  Eighteen HD patients were recorded with a minimum interevaluation interval of one year. Akinesia was studied by evaluating the anticipatory postural adjustment (APA) phase preceding the first step. We also evaluated gait speed, stride time and stride length.
  
  
  RESULTS
  We observed an alteration in the APA phase, whose evolution was correlated with that of akinesia. We also observed a decrease in gait speed, which was due both to an increase in stride time and a decrease in stride length. Stride-to-stride variability did not worsen between both evaluations.
  
  
  CONCLUSIONS
  A worsening in both gait initiation and gait performance was observed in HD. Initial weak functional capacity and more severe motor impairment seem to be associated with a faster progression of locomotion parameters in these mildly impaired HD patients.
authors.affiliation: Service de Neurophysiologie Clinique, Hôpital R-Salengro, CHRU de Lille, Lille Cedex, France. a-delval@chru-lille.fr
authors.forename: A
authors.initials: A
authors.lastname: Delval
authors.forename: P
authors.initials: P
authors.lastname: Krystkowiak
authors.forename: J-L
authors.initials: JL
authors.lastname: Blatt
authors.forename: M
authors.initials: M
authors.lastname: Delliaux
authors.forename: A
authors.initials: A
authors.lastname: Destée
authors.forename: P
authors.initials: P
authors.lastname: Derambure
authors.forename: L
authors.initials: L
authors.lastname: Defebvre
mesh_terms: D000368:Aged; D001696:Biomechanical Phenomena; D018450:Disease Progression; D020820:Dyskinesias / Q000209:etiology / Q000503:physiopathology; D005260:Female; D006801:Humans; D006816:Huntington Disease / Q000503:physiopathology* / Q000523:psychology; D008124:Locomotion / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D011187:Posture / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology