Page E, Cohen-Solal A, Jondeau G, Douard H, Roul G, Kantelip J P, Bussière J L
Service de Cardiologie, Hôpital Beaujon, Clichy, France.
Chest. 1994 Oct;106(4):1002-6. doi: 10.1378/chest.106.4.1002.
The general opinion that treadmill exercise elicits circulatory reserve more than bicycle exercise derives from studies conducted in normal subjects or subjects with coronary artery disease. To investigate if this also occurs in patients with chronic heart failure (CHF), 40 patients (mean ejection fraction: 26 +/- 9 percent) with normal pulmonary function underwent in random order both treadmill (Naughton modified protocol, holding on handrails permitted) and bicycle (10 W/min) maximal exercise over a 1-week period. Peak oxygen uptake (19.6 +/- 5.3 vs 17.6 +/- 5.1 ml/min/kg, p < 0.0001), ventilatory threshold (14.4 +/- 4.7 vs 12.0 +/- 3.5 ml/min/kg, p < 0.0001), and minute ventilation (59 +/- 18 vs 55 +/- 15 L/min, p < 0.05) were greater on treadmill than on bicycle. Heart rate, systolic blood pressure, breathing rate, respiratory exchange ratio, perceived exertion scale, and lactate were identical. The coefficient of the correlation between oxygen uptake and time was greater with bicycle than with treadmill (r = 0.97 +/- 0.04 vs 0.90 +/- 0.07, p < 0.001). Thus, treadmill exercise is more suitable for determining peak oxygen uptake in patients with CHF. However, the increase in oxygen uptake is more regular with bicycle exercise.
一般观点认为，与自行车运动相比，跑步机运动能引发更多的循环储备，这一观点源于对正常受试者或冠心病患者进行的研究。为了探究在慢性心力衰竭（CHF）患者中是否也会出现这种情况，40名肺功能正常的患者（平均射血分数：26±9%）在1周内随机先后进行了跑步机（采用诺顿改良方案，允许手扶扶手）和自行车（10瓦/分钟）的最大运动测试。跑步机运动时的峰值摄氧量（19.6±5.3对17.6±5.1毫升/分钟/千克，p<0.0001）、通气阈值（14.4±4.7对12.0±3.5毫升/分钟/千克，p<0.0001）和分钟通气量（59±18对55±15升/分钟，p<0.05）均高于自行车运动。心率、收缩压、呼吸频率、呼吸交换率、主观用力程度评分和乳酸水平则相同。自行车运动时摄氧量与时间的相关系数大于跑步机运动（r=0.97±0.04对0.90±0.07，p<0.001）。因此，跑步机运动更适合用于测定CHF患者的峰值摄氧量。然而，自行车运动时摄氧量的增加更为规律。
