The barrier effect of a traffic hump for a wheel-chair from measurements of the elbow joint motion and driving force

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  • 車いす走行時の肘関節運動と駆動力によるハンプのバリア度評価
  • クルマイス ソウコウジ ノ チュウカンセツ ウンドウ ト クドウリョク ニ ヨル ハンプ ノ バリアド ヒョウカ

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The purpose of this study was to investigate whether a hump (as a speed restraint for vehicular traffic passing through a residential area to avoid traffic congestion on the major carriageway) is a barrier, judged from the viewpoint of the motion of an elbow joint and the force required to drive a wheelchair. The subjects tested were ten male students. Eight obstacles, humps 60, 80 and 100mm high, flat road, ramp, difference-in-level, pedestrian track with longitudinal and transverse slopes, and a ramp in a pedestrian track for a vehicular crossover, were selected for this experiment. The cross-correlation coefficients that indicate the synchronization of motion of both elbow joints were high for the trial on flat road, ramp and humps but the coefficients for the trial on the pedestrian track with compound slopes and difference-in-level were low. The driving forces were significantly high for the trial on the difference-in-level and pedestrian track with compound slope and significantly low in trial for the flat road and the three humps. From these results, the barrier effect of a hump is lower than that for obstacles such as a ramp, difference-in-level and slopes in a pedestrian track, in the viewpoint of the motion and the force required to drive a wheelchair.

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