視覚障害者の直立姿勢制御に関する研究  [in Japanese] POSTURAL CONTROL OF THE VISUALLY HANDICAPPED IN MAINTAINING THE UPRIGHT STANDING POSTURE  [in Japanese]

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Abstract

(1)直立姿勢を維持しているときの身体動揺を前後と左右の成分に分けて、電子計算機を用いてパワー・スペクトルを求めた。(2)正眼者の開眼時における左右の動揺に0.5Hzを中心としたピークが認められ、閉眼時には0.1Hzから0.5Hzの間のパワーが増加した。また前後の動揺では0.5Hz以下ではパワーのばらつき大きく、0.5Hz以上ではばらつきが小さい傾向があった。(3)弱視者の開眼時と閉眼時の動揺は、前後左右とも明瞭な相違は認められず、正眼者に比較して大きなパワーを示した。開眼時と閉眼時において0.1Hzと0.5Hzの間のパワーに顕著な相違は認められなかった。(4)全盲者の前後と左右の動揺は弱視のパワーの分布に類似しており、全盲者特有のパワーの分布は見い出せなかった。全盲者は正眼者に比較してパワーが大きい傾向を示した。(5)視覚障害者の直立姿勢制御能は正眼者に比較して劣っており、直立姿勢制御能を向上させるためには適切な運動訓練を行う必要性を論じた。

It is well known that the center of gravity in human being moves irregularly during standing. Visual, vestibular and proprioceptive information play important roles in controling the upright posture. This study examined postural controllabilities of the visually handicapped in maintaining the upright standing posture. Body sway of 15 sighted, 7 partially sighted and 4 totally blind male adults was measured with a gravicorder which consisted of lateral and antero-posterior directions. The data obtained under eyes open and eyes closed conditions fed into computer and were applied power spectral analysis. The results were as follows: 1) The sighted showed that peak power of lateral sway existed in 0.5 Hz during standing with eyes open and power spectra ranging from 0.1 Hz to 0.5 Hz were increased markedly during standing with eyes closed. The sighted also revealed that variance of power spectra in antero-posterior direction was larger at the frequencies between about 0.1 Hz and 0.5 Hz than at the frequencies between 0.5 Hz and 3 Hz. 2) Power spectra in lateral and antero-posterior directions during standing with eyes open in the partially sighted showed the same tendency as with eyes closed. The partially sighted showed larger power than the sighted. 3) There was tendency to show that power spectra of the totally blind did not differ from those of the partially sighted. It was shown that body sway of the totally blind had no particular power spectra. It seemed that poor postural controllabilities of the visually handicapped resulted in shortage of motor experience as well as lack of visual information.

Journal

  • The Japanese Journal of Special Education

    The Japanese Journal of Special Education 18(4), 1-10, 1981

    The Japanese Association of Special Education

Codes

  • NII Article ID (NAID)
    110006784085
  • NII NACSIS-CAT ID (NCID)
    AN00172513
  • Text Lang
    JPN
  • Article Type
    journal article
  • ISSN
    0387-3374
  • NDL Article ID
    2251586
  • NDL Source Classification
    F81(障害者教育)
  • NDL Source Classification
    ZF9(教育--各科教育)
  • NDL Call No.
    Z7-314
  • Data Source
    NDL  NII-ELS  IR  J-STAGE 
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