Weber H, Naumann H J, Jentsch A, Tröger B, Wunderlich H
Int Arch Occup Environ Health. 1987;59(3):273-80. doi: 10.1007/BF00377739.
This study was undertaken to assess more comprehensively and with greater differentiation the reduction in the absolute electrical muscle activity (aEA) determined by different investigations in the permanent performance threshold range of the cardiovascular system (HKS) by means of the behaviour of the aEA of the highly stressed leg muscles and little stressed forearm muscles. Six healthy, untrained male subjects operated a hand ergograph alone in one test, and, in four more tests, in combination with a constant bicycle ergometer load of 40, 60, 80, and 100 W, respectively. As a result of these tests, a relative reduction in aEA for the leg muscles and an absolute reduction in aEA for the forearm muscles could be identified in the permanent performance threshold range of the HKS. Therefore, aEA is also considered to be an indicator of general stress that can define the permanent performance threshold range of the HKS more completely. The reduction in aEA is probably an expression of a negative feedback from the cardiovascular system to the neuromuscular system induced by the central nervous system.
本研究旨在通过高度紧张的腿部肌肉和轻度紧张的前臂肌肉的绝对电肌肉活动（aEA）行为，更全面、更有区分地评估在心血管系统（HKS）的持久运动阈值范围内不同研究确定的绝对电肌肉活动（aEA）的降低情况。六名健康、未经训练的男性受试者在一项测试中单独操作手部测力计，在另外四项测试中，分别与40、60、80和100瓦的恒定自行车测力计负荷相结合。这些测试的结果表明，在HKS的持久运动阈值范围内，可以确定腿部肌肉的aEA相对降低，前臂肌肉的aEA绝对降低。因此，aEA也被认为是一般应激的指标，它可以更完整地定义HKS的持久运动阈值范围。aEA的降低可能是中枢神经系统引起的心血管系统对神经肌肉系统的负反馈的一种表现。
