高齢者の姿勢制御機構 : 転倒と視覚の関係について Postural Control in Elderly Persons : Effect of Vision on Accidental Falls

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著者

    • PYYKKO Ilmari
    • ヘルシンキ大学耳鼻咽喉科 Department of Otolaryngology, University Hospital of Helsinki

抄録

Postural control mechanism and risk factors for accidental falls were studied in elderly persons. Posturography measurement was performed with vibration to stimulate calf muscles at different frequencies from 20, 40, 60, 80, to 100 Hz arranged in a pseudo-random fashions.<BR>Sway velocity was measured to reflect postural control under visual and non-visual conditions with and without vibration. Under non-visual conditions, sway velocity was increased in elderly persons. In elderly persons, postural stability was controlled much more by visual input than by referents due to deterioration of vestibular and proprioceptive control of posture. Romberg's quotient in elderly who fell frequently (fallers) differed significantly from that of those who did not fall frequently (non-fallers) (P<0.01).<BR>Fallers did not use visual input to control their posture. Proprioception from calf muscles was poorer in fallers than in the non-fallers.<BR>In risk factor analysis, lateral body sway, Romberg's quotient, poor vision, support, motility, parkinsonism and muscle hypotony were predictive for accidental falls.To prevent falls, rehabilitation programs should be attempted to enhance proprioreceptor or pressoreceptor cues. Visual input should be promoted by sufficient visual illumination and contrasting visual surroundings.

収録刊行物

  • Equilibrium research

    Equilibrium research 54(5), 409-415, 1995-10-01

    Japan Society for Equilibrium Research

参考文献:  27件中 1-27件 を表示

被引用文献:  9件中 1-9件 を表示

各種コード

  • NII論文ID(NAID)
    10008708191
  • NII書誌ID(NCID)
    AN00001485
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03855716
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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