Williams D H, Williams C
Br J Sports Med. 1983 Jun;17(2):110-6. doi: 10.1136/bjsm.17.2.110.
A treadmill walking test was developed in order to provide a suitable method of assessing the fitness levels of sedentary middle-aged men (mean age, 44.3 yrs) at submaximal intensity. The incremental stages of the test enabled subjects to terminate the workload whenever undue discomfort was experienced. The test procedure was used in a preliminary experiment to compare the cardiovascular and metabolic responses of trained and untrained middle-aged men to exercise. Heart rate responses to the test were significantly higher (p less than 0.01) in the untrained, compared with the trained, men as were the post-exercise blood lactic acid concentrations (p less than 0.01), Respiratory Exchange Ratios (p less than 0.01), Ventilatory Equivalents (p less than 0.05) and Rate of Perceived Exertion (p less than 0.01). However, there were no differences in the oxygen cost of walking between the two groups.
为了提供一种在亚最大强度下评估久坐不动的中年男性（平均年龄44.3岁）体能水平的合适方法，开发了一种跑步机步行测试。该测试的递增阶段使受试者在感到过度不适时能够随时终止工作量。该测试程序用于一项初步实验，以比较训练有素和未受过训练的中年男性运动时的心血管和代谢反应。与受过训练的男性相比，未受过训练的男性在测试中的心率反应显著更高（p<0.01），运动后血乳酸浓度（p<0.01）、呼吸交换率（p<0.01）、通气当量（p<0.05）和自觉用力程度（p<0.01）也是如此。然而，两组之间的步行耗氧量没有差异。
