傾斜外乱時におけるラット動的姿勢調節の特徴  [in Japanese] Characteristics of Dynamic Postural Adjustments During Floor Inclination in Rats: Analysis Using a Posturography Technique  [in Japanese]

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Author(s)

    • 佐々木 健史 SASAKI Takeshi
    • 札幌医科大学 保健医療学部 理学療法学科|札幌医科大学大学院 保健医療学研究科 理学療法学・作業療法学専攻 神経・精神機能学分野 Department of Physical Therapy, School of Health Sciences, Sapporo Medical University|Graduate Programs for Physical Therapy and Occupational Therapy, Graduate School of Health Sciences, Sapporo Medical University
    • 長峯 隆 NAGAMINE Takashi
    • 札幌医科大学 医学部 神経科学講座 Department of Systems Neuroscience, School of Medicine, Sapporo Medical University
    • 小塚 直樹 [他] KOZUKA Naoki
    • 札幌医科大学 保健医療学部 理学療法学科 Department of Physical Therapy, School of Health Sciences, Sapporo Medical University
    • 松山 清治 MATSUYAMA Kiyoji
    • 札幌医科大学 保健医療学部 作業療法学科|札幌医科大学大学院 保健医療学研究科 理学療法学・作業療法学専攻 神経・精神機能学分野 Department of Occupational Therapy, School of Health Sciences, Sapporo Medical University|Graduate Programs for Physical Therapy and Occupational Therapy, Graduate School of Health Sciences, Sapporo Medical University

Abstract

〔目的〕傾斜外乱時におけるラットの動的姿勢調節の特徴抽出を目的とした.〔対象〕成ラット5匹.〔方法〕小動物用重心動揺計を用いて,ラットを側方および前後方向へ異なる傾斜速度で30°までの傾斜外乱を与えた際の重心移動の測定と姿勢変化の動画記録を行った.〔結果〕側方傾斜では傾斜速度10°/secまでの増加に追随して動的な姿勢変化とそれに伴う特徴的重心移動がみられた.一方,前後方向傾斜では傾斜角度の増加に伴う重心移動はみられたが,顕著な姿勢変化は示さなかった.〔結語〕側方傾斜では動的姿勢調節による姿勢の補正がなされるが,前後方向傾斜では顕著な姿勢変化を示さず姿勢の安定化が図られているものと示唆された. <br>

[Purpose] The purpose of this study was to reveal the characteristics of dynamic postural adjustments in rats using a posturography technique. [Subjects] Five adult rats. [Methods] We measured changes of center of pressure (COP) during floor inclination in the lateral (left) side and anteroposterior directions at angles from 0 to 30 degrees using different angular velocities ranging from 1.8 to 15 degree/sec. [Results] Animals maintained a standing posture at all inclination angles in all directions, and exhibited COP changes along with increase of the inclination angle. Animals showed dynamic postural adjustments together with characteristic COP changes in lateral side direction at angular velocities from 1.8 to 10 degree/sec. In anteroposterior directions, however, animals showed COP changes without dynamic postural adjustments in accordance with the increase of floor inclination. [Conclusion] These results suggest that animals correct posture in response to lateral disturbances using dynamic postural adjustments, and that animals stabilize posture without dynamic postural adjustments in anteroposterior disturbances. <br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 30(1), 21-27, 2015

    The Society of Physical Therapy Science

Codes

  • NII Article ID (NAID)
    130004874987
  • NII NACSIS-CAT ID (NCID)
    AN10472896
  • Text Lang
    JPN
  • ISSN
    1341-1667
  • NDL Article ID
    026234006
  • NDL Call No.
    Z7-1893
  • Data Source
    NDL  J-STAGE 
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