title: Deficiencies in standing weight shifts by ambulant hemiplegic subjects.
abstract: OBJECTIVE
  To compare weight shifts of hemiplegic subjects with controls in parallel and diagonal stance.
  
  
  METHODS
  Case-control study.
  
  
  METHODS
  All subjects were functionally independent in the general community. Hemiplegic subjects had qualified for and had received rehabilitation.
  
  
  METHODS
  Independently ambulant hemiplegic subjects, who exhibited an asymmetrical gait pattern, were compared with age-and sex-matched controls recruited from the same community.
  
  
  METHODS
  Subjects maintained a series of weight shift postures, each for a duration of 10sec, while standing on a transduced platform with feet both parallel and placed diagonally, the latter position designed to mimic the double support phases of the gait cycle.
  
  
  METHODS
  Locations of center of pressure (CP) were measured in relation to each subject's center of base of support and, ranges of weight shift in each direction were calculated.
  
  
  RESULTS
  With feet parallel, the hemiplegic sample was deficient in shifting weight towards the hemiplegic leg and posteriorly (p<.05). The diagonal tests revealed deficiencies in shifting weight posterolaterally over both lower limbs (p<.05) but particularly over the affected leg. The ranges over which weight could be significantly below the values for the normal sample in both cardinal plane and diagonal directions (P<.05).
  
  
  CONCLUSIONS
  Even functionally ambulant hemiplegic subjects demonstrate marked limitations in the capacity to shift weight and possess a reduced range of weight shift. The diagonal tests emphasized deficiencies in shifting weight posteriorly over both limbs and toward the affected side, specific rehabilitation of which may improve gait.
authors.affiliation: Department of Human Movement Studies, Rhodes University, Grahamstown, South Africa.
authors.forename: G I
authors.initials: GI
authors.lastname: Turnbull
authors.forename: J
authors.initials: J
authors.lastname: Charteris
authors.forename: J C
authors.initials: JC
authors.lastname: Wall
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D003201:Computers; D005260:Female; D005684:Gait; D006429:Hemiplegia / Q000503:physiopathology*; D006801:Humans; D007866:Leg; D008297:Male; D008875:Middle Aged; D009068:Movement; D004856:Postural Balance