Pagliarulo M A, Waters R, Hislop H J
Phys Ther. 1979 May;59(5):538-43. doi: 10.1093/ptj/59.5.538.
Fifteen unilateral below-knee amputees with no preexisting vascular disease were studied during free velocity walking to determine energy expenditure with and without a prosthesis. Expired air was collected, and heart rate and respiratory rate data were telemetered. Mean velocity for the unrestrained walking was 71 m/min, both during ambulation with a prosthesis and during crutch walking (without a prosthesis). Heart rates were within normal ranges during prosthetic walking (106 beats/min), but rose significantly to 135 beats/min for crutch walking. Energy cost also rose significantly from a mean of 15.5 ml O2/kg/min with a prosthesis of 22.3 ml O2/kg/min with crutches. The oxygen uptake measured in units of ml O2/kg/m increased when the subjects walked faster or slower than their free cadence. We concluded that the use of the prosthesis should be encouraged and that the amputee should be allowed to choose his natural velocity of walking.
对15名无既往血管疾病的单侧膝下截肢者在自由速度行走时进行研究，以确定使用和不使用假肢时的能量消耗。收集呼出气体，并遥测心率和呼吸频率数据。在使用假肢行走和使用拐杖行走（不使用假肢）期间，自由行走的平均速度均为71米/分钟。在假肢行走期间心率处于正常范围（106次/分钟），但在使用拐杖行走时显著升至135次/分钟。能量消耗也从使用假肢时的平均15.5毫升氧气/千克/分钟显著升至使用拐杖时的22.3毫升氧气/千克/分钟。当受试者行走速度快于或慢于其自由步频时，以毫升氧气/千克/米为单位测量的摄氧量会增加。我们得出结论，应鼓励使用假肢，并且应允许截肢者选择其自然行走速度。
