Gutin B, Ang K E, Torrey K
Applied Physiology Laboratory, Teachers College, Columbia University, New York, NY 10027.
Arch Phys Med Rehabil. 1988 Jul;69(7):510-3.
Aerobic exercises in which both arm and legs are used are becoming more popular for conditioning and rehabilitation. In order to clarify our understanding of physiologic and subjective responses to work of this type, two experiments were conducted using legs and/or arms. In the first, incremental cycle ergometry was done with the arms (A), legs (L), and combined, in which either 10% (A-10) or 25% (A-25) of the power output (PO) was done by the arms. Peak rate of oxygen consumption (VO2) and heart rate (HR) were significantly lower for A, but the other three conditions did not differ significantly. Ventilatory breakpoint (VB) was significantly higher for A-10 than for L. The second study used 60 minutes of constant-load work at a PO of approximately 115% of the PO at which the VB occurred in the L incremental test, to stimulate an aerobic training session. During the 60 minutes, VO2 and cardiac output were significantly higher, and systolic blood pressure (SBP) significantly lower for A-25 than for L, with A-10 values generally failing between the two. The HR-SBP products and ratings of perceived exertion were quite similar for the three modes. Thus, assigning some of the PO to the arms allowed a greater metabolic load to be maintained with no greater cardiovascular or subjective strain, suggesting that this type of exercise might be valuable for aerobic conditioning, cardiorespiratory rehabilitation, and weight control.
双臂和双腿都参与的有氧运动在体能训练和康复领域越来越受欢迎。为了更清楚地了解此类运动的生理反应和主观感受，我们进行了两项分别使用腿部和/或手臂的实验。第一项实验中，进行了手臂（A）、腿部（L）以及两者结合的递增式循环测力计测试，其中手臂承担10%（A - 10）或25%（A - 25）的功率输出（PO）。A组的峰值耗氧率（VO2）和心率（HR）显著更低，但其他三种情况差异不显著。A - 10组的通气断点（VB）显著高于L组。第二项研究采用在L递增测试中通气断点出现时的功率输出的约115%的功率进行60分钟的恒定负荷运动，以模拟一次有氧训练课程。在这60分钟内，A - 25组的VO2和心输出量显著更高，收缩压（SBP）显著低于L组，A - 10组的值通常介于两者之间。三种运动模式的心率 - 收缩压乘积和主观用力感觉评分相当相似。因此，将部分功率输出分配给手臂可以在不增加心血管负担或主观压力的情况下维持更大的代谢负荷，这表明这类运动可能对有氧训练、心肺康复和体重控制具有重要价值。
