Paré G, Noreau L, Simard C
Laboratoire d'Evaluation en Activité Physique Adaptée, Centre François-Charon, Québec.
Union Med Can. 1990 Mar-Apr;119(2):63; 67-9.
93 subjects (age = 65 +/- 10 years) with lower limb amputation ensuing from peripheral vascular disease performed a graded exercise test on arm cranking ergometer with an electromagnetic braking to assess their physical fitness and cardiac condition before starting a prosthetic training programme. The protocol was continuous with a workload increment of 10 watts every two minutes. Heart rate, blood pressure and ECG were recorded at each stage. Reasons to stop the test were 1) arm muscle fatigue, 2) reaching of target heart rate, 3) cardiovascular abnormalities. At the end of the test, the mean percentage of maximum heart rate was 53%, 92%, and 66% for each of these reasons, respectively (p less than .0001). Results showed that subjects who received a prosthesis had a higher exercise capacity than those who did not get a prosthesis (39.0 watts vs 18.5 watts, p less than 0.001). Furthermore, maximal oxygen uptake (4.4 METs vs 3.0 METs, p less than 0.001) and reached maximal heart rate (131 vs 110 bpm, p less than .005) were both higher in subjects of prosthesis group. Results suggest that a graded exercise test at the beginning of prosthetic training allows a rehabilitation team 1) to predict the success of the prosthetic process and 2) to identify subjects for which this process could increase the risks of health problems.
93名因外周血管疾病而进行下肢截肢的受试者（年龄 = 65 ± 10岁），在开始假肢训练计划前，在配备电磁制动装置的手臂曲柄测力计上进行了分级运动测试，以评估他们的体能和心脏状况。测试方案为持续进行，每两分钟工作量增加10瓦。在每个阶段记录心率、血压和心电图。停止测试的原因有：1）手臂肌肉疲劳；2）达到目标心率；3）心血管异常。在测试结束时，因这些原因停止测试的受试者，其最大心率的平均百分比分别为53%、92%和66%（p < 0.0001）。结果显示，接受假肢的受试者比未接受假肢的受试者具有更高的运动能力（39.0瓦对18.5瓦，p < 0.001）。此外，假肢组受试者的最大摄氧量（4.4梅脱对3.0梅脱，p < 0.001）和达到的最大心率（131次/分钟对110次/分钟，p < 0.005）均更高。结果表明，在假肢训练开始时进行分级运动测试，可使康复团队：1）预测假肢安装过程的成功率；2）识别该过程可能增加健康问题风险的受试者。
