Bot S D, Hollander A P
Faculty of Human Movement Sciences, Vrije Universiteit, Amsterdam, The Netherlands.
Ergonomics. 2000 Oct;43(10):1578-92. doi: 10.1080/001401300750004005.
In this study the validity of using heart rate (HR) responses to estimate oxygen uptake (VO2) during varying non-steady state activities was investigated. Dynamic and static exercise engaging large and small muscle masses were studied in four different experiments. In the first experiment, 16 subjects performed an interval test on a cycle ergometer, and 12 subjects performed a field test consisting of various dynamic leg exercises. Simultaneous HR and VO2 measurements were made. Linear regression analyses revealed high correlations between HR and VO2 during both the interval test (r = 0.90 +/- 0.07) and the field test (r = 0.94 +/- 0.04). In the second experiment, 14 non-wheelchair-bound subjects performed both an interval wheelchair test on a motor driven treadmill, and a wheelchair field test consisting of dynamic and static arm exercise. Significant relationships were found for all subjects during both the interval test (r = 0.91 +/- 0.06) and the field test (r = 0.86 +/- 0.09). During non-steady state exercise using both arms and legs in a third experiment, contradictory results were found. For 11 of the 15 subjects who performed a field test consisting of various nursing tasks no significant relationship between HR and VO2 was found (r = 0.42 +/- 0.16). All tasks required almost the same physiological strain, which induced a small range in data points. In a fourth experiment, the influence of a small data range on the HR-VO2 relationship was investigated: five subjects performed a field test that involved both low and high physiological strain, non-steady state arm and leg exercise. Significant relationships were found for all subjects (r = 0.86 +/- 0.04). Although the r-values found in this study were less than under steady state conditions, it can be concluded that VO2 may be estimated from individual HR-VO2 regression lines during non-steady state exercise.
在本研究中，调查了在不同非稳态活动期间使用心率（HR）反应来估计摄氧量（VO2）的有效性。在四个不同的实验中研究了涉及大肌肉群和小肌肉群的动态和静态运动。在第一个实验中，16名受试者在自行车测力计上进行了间歇测试，12名受试者进行了包括各种动态腿部运动的实地测试。同时进行了心率和摄氧量测量。线性回归分析显示，在间歇测试（r = 0.90±0.07）和实地测试（r = 0.94±0.04）期间，心率与摄氧量之间均具有高度相关性。在第二个实验中，14名非轮椅使用者在电动跑步机上进行了间歇轮椅测试，并进行了包括动态和静态手臂运动的轮椅实地测试。在间歇测试（r = 0.91±0.06）和实地测试（r = 0.86±0.09）期间，所有受试者均发现了显著关系。在第三个实验中，在使用双臂和双腿的非稳态运动期间，发现了相互矛盾的结果。在15名进行了包括各种护理任务的实地测试的受试者中，有11名受试者的心率与摄氧量之间未发现显著关系（r = 0.42±0.16）。所有任务所需的生理负荷几乎相同，这导致数据点的范围较小。在第四个实验中，研究了小数据范围对心率-摄氧量关系的影响：5名受试者进行了一项涉及低和高生理负荷、非稳态手臂和腿部运动的实地测试。所有受试者均发现了显著关系（r = 0.86±0.04）。尽管本研究中发现的r值低于稳态条件下的r值，但可以得出结论，在非稳态运动期间，可以根据个体心率-摄氧量回归线来估计摄氧量。
