Scharf H P, Eckhardt R, Maurus M, Puhl W
Orthopädische Klinik, Universität Ulm.
Int J Sports Med. 1994 Jan;15 Suppl 1:S56-9. doi: 10.1055/s-2007-1021111.
Twenty-one healthy males aged 20-36 years were examined for hemodynamic and metabolic parameters such as heart rate, oxygenation, lactate, blood pressure, under isokinetic and ergometric loadings. The healthy volunteers were tested by increased loads and constant times with an identical isokinetic and ergometric power. The important results are: Heart frequency and blood pressure are higher under isokinetic than under ergometric conditions. Oxygenation is equal in both tests. The lactate values show for the isokinetic maximal and for the ergometric submaximal loadings. The definitive factor for this variation is the relation between force and velocity. The higher tension of the muscles and the higher activity of the fast-twitch fibers seem to be responsible for the increasing of sympathicotonia. The clinical impact of this controlled study is: 1. Isokinetic testing might be dangerous for patients with cardiac diseases or circulatory disturbances. 2. Isokinetic training programs have to pay attention to joint and internal diseases at the same level. 3. During the first isokinetic test all precautions for a possible emergency case have to be taken.
对21名年龄在20至36岁的健康男性进行了检查，以测量他们在等速和测力负荷下的血流动力学和代谢参数，如心率、氧合、乳酸、血压等。健康志愿者在相同的等速和测力功率下，通过增加负荷和固定时间进行测试。重要结果如下：等速条件下的心率和血压高于测力条件下的。两种测试中的氧合情况相同。乳酸值在等速最大负荷和测力次最大负荷时有所不同。这种变化的决定性因素是力与速度之间的关系。肌肉张力增加以及快肌纤维活动增强似乎是导致交感神经张力增加的原因。这项对照研究的临床意义在于：1. 等速测试对患有心脏病或循环系统障碍的患者可能有危险。2. 等速训练计划必须同样关注关节和内科疾病。3. 在首次等速测试期间，必须针对可能出现的紧急情况采取所有预防措施。
