title: One-leg standing time with eyes open: comparison between the mouth-opened and mouth-closed conditions.
abstract: OBJECTIVE
  Many studies report a significant relationship between the one-leg standing time with the eyes open and the occlusal relationship. To determine the association between proprioception (the periodontal membrane vs muscle spindle) to the one-leg standing time, the authors compared the one-leg standing time with eyes open between mouth-opened and mouth-closed conditions.
  
  
  METHODS
  The study participants were 107 healthy, elderly patients. The authors measured the one-leg standing time with eyes open between mouth-opened and mouth-closed conditions.
  
  
  RESULTS
  The one-leg standing time was significantly shorter with the mouth opened (21·1±19·1 seconds) than with the mouth closed (25·1±21·4 seconds). Patients whose one-leg standing time was equal or shorter with the mouth opened than with the mouth closed were not different from the other patients with regard to age, handgrip strength, BMI, and the number of remaining teeth.
  
  
  CONCLUSIONS
  The vertical mandibular position may affect body balance.
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Yoshida
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Kanehisa
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Ozaki
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Iwasa
authors.forename: Takaki
authors.initials: T
authors.lastname: Fukuizumi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kikutani
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D007866:Leg; D008297:Male; D009055:Mouth; D004856:Postural Balance / Q000502:physiology*; D011434:Proprioception / Q000502:physiology*
keywords: Handgrip strength,; One leg standing time with eyes open,; Remaining teeth