title: Ankle dorsiflexion among healthy men with different qualities of lower extremity movement.
abstract: BACKGROUND
  Lower extremity movement patterns have been implicated as a risk factor for various knee disorders. Ankle-dorsiflexion (DF) range of motion (ROM) has previously been associated with a faulty movement pattern among healthy female participants.
  
  
  OBJECTIVE
  To determine the association between ankle DF ROM and the quality of lower extremity movement during the lateral step-down test among healthy male participants.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Training facility of the Israel Defense Forces.
  
  
  METHODS
  Fifty-five healthy male Israeli military recruits (age = 19.7 ± 1.1 years, height = 175.4 ± 6.4 cm, mass = 72.0 ± 7.6 kg).
  
  
  METHODS
  Dorsiflexion ROM was measured in weight-bearing and non-weight-bearing conditions using a fluid-filled inclinometer and a universal goniometer, respectively. Lower extremity movement pattern was assessed visually using the lateral step-down test and classified categorically as good or moderate. All measurements were performed bilaterally.
  
  
  METHODS
  Weight-bearing and non-weight-bearing DF ROM were more limited among participants with moderate quality of movement than in those with good quality of movement on the dominant side (P = .01 and P = .02 for weight-bearing and non-weight-bearing DF, respectively). Non-weight-bearing DF demonstrated a trend toward a decreased range among participants with moderate compared with participants with good quality of movement on the nondominant side (P = .03 [adjusted P = .025]). Weight-bearing DF was not different between participants with good and moderate movement patterns on the nondominant side (P = .10). Weight-bearing and non-weight-bearing ankle DF ROM correlated significantly with the quality of movement on both sides (P < .01 and P < .05 on the dominant and nondominant side, respectively).
  
  
  CONCLUSIONS
  Ankle DF ROM was associated with quality of movement among healthy male participants. The association seemed weaker in males than in females.
authors.affiliation: Ariel University, Israel.
authors.forename: Alon
authors.initials: A
authors.lastname: Rabin
authors.forename: Zvi
authors.initials: Z
authors.lastname: Kozol
authors.forename: Elad
authors.initials: E
authors.lastname: Spitzer
authors.forename: Aharon
authors.initials: A
authors.lastname: Finestone
mesh_terms: D000842:Ankle / Q000502:physiology*; D003430:Cross-Sectional Studies; D005080:Exercise Test; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D046788:Patellofemoral Pain Syndrome / Q000503:physiopathology*; D016059:Range of Motion, Articular / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology*; D055815:Young Adult
keywords: anterior cruciate ligament; hip; knee; lateral step-down test; patellofemoral pain syndrome
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