title: Hip abductor weakness and lower extremity kinematics during running.
abstract: OBJECTIVE
  To determine if females with hip abductor weakness are more likely to demonstrate greater knee abduction during the stance phase of running than a strong hip abductor group.
  
  
  METHODS
  Observational prospective study design.
  
  
  METHODS
  University biomechanics laboratory.
  
  
  METHODS
  15 females with weak hip abductors and 15 females with strong hip abductors.
  
  
  METHODS
  Group differences in lower extremity kinematics were analyzed using repeated measures ANOVA with one between factor of group and one within factor of position with a significance value of P < .05.
  
  
  RESULTS
  The subjects with weak hip abductors demonstrated greater knee abduction during the stance phase of treadmill running than the strong group (P < .05). No other significant differences were found in the sagittal or frontal plane measurements of the hip, knee, or pelvis.
  
  
  CONCLUSIONS
  Hip abductor weakness may influence knee abduction during the stance phase of running.
authors: Sports Medicine Department, Gundersen Lutheran Sports Medicine, La Crosse, WI, USA.
authors: Becky L
authors: BL
authors: Heinert
authors: Thomas W
authors: TW
authors: Kernozek
authors: John F
authors: JF
authors: Greany
authors: Dennis C
authors: DC
authors: Fater
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001696:Biomechanical Phenomena / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006615:Hip / Q000502:physiology*; D006801:Humans; D035002:Lower Extremity / Q000502:physiology*; D008875:Middle Aged; D018908:Muscle Weakness / Q000473:pathology*; D018482:Muscle, Skeletal / Q000502:physiology*; D010865:Pilot Projects; D012420:Running / Q000502:physiology*; D055815:Young Adult