介助による車いす推進速度が乗り心地および介助負担に及ぼす影響
Influence of Wheelchair Pushing Speed on Riding Comfort and Helpers Physical Strain on Helpers

Hiroko Noto, Seiji Saito, Satoshi Muraki
2009 Nihon Kango Gijutsu Gakkaishi  
車いすによる移送は居宅および医療・保健福祉施設においても頻度の高い介助操作であるが,そ の操作指標は明確とされていない.そこで本研究では,すべての推進操作の基本となる発進と停止 の望ましい操作指標を得ることを目的とし,乗車側の乗り心地と介助側の介助負担の両面から操作 の特性を検討した.被験者は介助者と乗車者を設け,介助者は看護師と介助未経験者の 2 群に設定 した.介助者には発進と停止を 3 ~ 4 通りの速度条件に従い任意の速度で操作させ,車いすの走行 軌跡の測定および乗車者と介助者双方に主観評価を行った.その結果,発進・停止とも一定の地点 において境界の速度を超えると乗り心地は低下した.また,介助負担感と乗り心地との間には負の 相関関係が認められた.加速減速が大きいと乗り心地が低下するが,乗車者の乗り心地を高めるこ とが介助負担の増加にはつながりにくいことが示唆された.また,減速開始地点から停止までの距離 と乗り心地の間にも負の相関関係が認められ,距離を用いた操作指標が有効ではないかと推察する. キーワード : 車いす,移送,乗り心地,操作方法 Transportation
more » ... 法 Transportation using a wheelchair is one of the mobility aids that is often used at home, medical and nursing care facilities. However, there is no useful standard for wheelchair pushing technique that considers the riding comfort of wheelchair users. To develop an index of desirable wheelchair pushing activity for starting and stopping, the present study investigated the influence of wheelchair pushing speed on riding comfort and the physical stain of helpers. Ten nurses and twelve beginners at wheelchair pushing participated as helpers that pushed a wheelchair. Twenty ─ two persons participated as the wheelchair user. Helper subjects started and stopped a wheelchair with a user at three or four different speeds selected by the helper. Wheelchair speeds were monitored through the experiment, and subjective riding comfort of the user and the physical strain of the helper were measured after the pushing activity. At both start and stop, scores for subjective riding comfort decreased markedly when the wheelchair speeds were over a given speed at a specific point. Moreover, significant negative relationships were observed between subjective riding comfort and physical strain. These findings indicated that riding comfort is mainly influenced by wheelchair speed, and suggested that there is a desirable level of pushing 受付日 : 2008 年 9 月 17 日 受理日 : 2008 年 12 月 4 日 1)九州大学大学院芸術工学府
doi:10.18892/jsnas.8.2_37 fatcat:44smm7jc7re2zgsmvijidwkqka