一种用于评估心力衰竭的新型运动试验：自供电跑步机的应用。
A new exercise test for the assessment of heart failure: use of a self powered treadmill.
作者信息
Parameshwar J, Dambrink J H, Sparrow J, Wright C, Park A, Tweed J, Poole-Wilson P A
机构信息
National Heart and Lung Institute, London.
出版信息
Br Heart J. 1989 May;61(5):421-5. doi: 10.1136/hrt.61.5.421.
Time limited exercise on a self powered treadmill was evaluated as a method of assessing functional capacity in patients with mild heart failure. The characteristics of the treadmill were established by exercising 11 controls at three speeds and two inclinations and comparing oxygen consumption with that on a motorised treadmill under the same conditions. Oxygen consumption on the self powered treadmill at an equivalent speed and inclination was significantly higher because of the work needed to overcome the friction of the belt. Unlike a conventional treadmill, increasing the gradient on the self powered treadmill did not increase oxygen consumption. The distance walked in 12 minutes on the self powered treadmill was measured in eight patients with mild heart failure and ten controls. Maximal oxygen consumption was measured in the same group on a conventional treadmill by a mass spectrometer. There was a significant correlation between the distance walked and maximum oxygen consumption. In patients with mild heart failure the distance travelled in 12 minutes on a self powered treadmill provides a practical, inexpensive, and sensitive method of assessing functional capacity.
对轻度心力衰竭患者进行限时自行驱动跑步机运动，以此作为评估其功能能力的一种方法进行了评估。通过让11名对照者在三种速度和两种坡度下进行运动，并将氧气消耗量与相同条件下电动跑步机上的氧气消耗量进行比较，确定了该跑步机的特性。由于需要克服皮带摩擦力做功，在相同速度和坡度下，自行驱动跑步机上的氧气消耗量显著更高。与传统跑步机不同，自行驱动跑步机上坡度增加并不会增加氧气消耗量。对8名轻度心力衰竭患者和10名对照者测量了他们在自行驱动跑步机上12分钟内行走的距离。通过质谱仪在同一组患者的传统跑步机上测量了最大氧气消耗量。行走距离与最大氧气消耗量之间存在显著相关性。对于轻度心力衰竭患者，在自行驱动跑步机上12分钟内行走的距离提供了一种实用、廉价且敏感的评估功能能力的方法。
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