MacDonald Blair, Kirby R Lee, Smith Cher, MacLeod Donald A, Webber Adam
Division of Physical Medicine and Rehabilitation, Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
Am J Phys Med Rehabil. 2009 Jan;88(1):61-5. doi: 10.1097/PHM.0b013e31818dff2a.
To test the hypothesis that, in comparison with a heavier, larger and more expensive manual tilt-in-space wheelchair, a lightweight manual wheelchair equipped with new rear antitip devices provides comparable mean sitting pressures in the tilted position, each of eight able-bodied participants sat for 8 mins in each wheelchair, upright, and tilted back (38-39 degrees). The mean (+/-SD) sitting pressures (of all active sensors in a force-sensing array) at the eighth minute in the upright and tilted positions with the new rear antitip device wheelchair were 58.6 (+/-14.0) and 45.8 (+/-9.3) mm Hg (a 20.7% reduction) (P = 0.005). For the tilt-in-space wheelchair, the mean values were 55.7 (+/-13.9) and 47.2 (+/-10.8) mm Hg (a 26.3% reduction) (P = 0.008). There were no significant differences between the wheelchairs in the upright (P = 0.843) or tilted (P = 0.624) positions. A lightweight manual wheelchair equipped with a new rear antitip device provides equivalent reductions of sitting pressures in the tilted position to a comparably tilted tilt-in-space wheelchair.
与较重、较大且更昂贵的手动空间倾斜轮椅相比，配备新型后置防倾翻装置的轻型手动轮椅在倾斜位置可提供相当的平均坐姿压力，八名身体健全的参与者分别在每种轮椅上直立和向后倾斜（38 - 39度）状态下坐8分钟。配备新型后置防倾翻装置的轮椅在直立和倾斜位置第八分钟时（力传感阵列中所有有效传感器的）平均（±标准差）坐姿压力分别为58.6（±14.0）和45.8（±9.3）毫米汞柱（降低了20.7%）（P = 0.005）。对于空间倾斜轮椅，平均值分别为55.7（±13.9）和47.2（±10.8）毫米汞柱（降低了26.3%）（P = 0.008）。两种轮椅在直立（P = 0.843）或倾斜（P = 0.624）位置时均无显著差异。配备新型后置防倾翻装置的轻型手动轮椅在倾斜位置时坐姿压力的降低程度与同等倾斜角度的空间倾斜轮椅相当。
