Neural adaptation to resistance training: changes in evoked V-wave and H-reflex responses
Neural adaptation to resistance training: changes in evoked V-wave and H-reflex responses
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DOI：
10.1152/japplphysiol.01185.2001
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发表时间：
2002-06-01
影响因子：
3.3
通讯作者：
Dyhre-Poulsen, P
中科院分区：
文献类型：
--
作者：
Aagaard, P;Simonsen, EB;Dyhre-Poulsen, P
在最大肌肉收缩过程中进行V波和Hoffmann（H）反射的联合测量，以研究抗阻训练诱导的神经适应机制。H反射可用于评估脊髓α运动神经元的兴奋性，同时还反映传输效率（即，突触前抑制）。此外，由于下行中枢通路的激活，V波反映了α运动神经元池传出运动输出的整体幅度。14名男性受试者参加了14周的阻力训练，包括腿部肌肉的举重练习。在最大等长斜坡收缩过程中，记录训练前后比目鱼肌诱发的V波、H反射和最大M波（M-max）反应。采用等速测力法测量最大等长、向心性和离心肌力。V波振幅增加50%（P
Combined V-wave and Hoffmann (H) reflex measurements were performed during maximal muscle contraction to examine the neural adaptation mechanisms induced by resistance training. The H-reflex can be used to assess the excitability of spinal alpha-motoneurons, while also reflecting transmission efficiency (i.e., presynaptic inhibition) in Ia afferent synapses. Furthermore, the V-wave reflects the overall magnitude of efferent motor output from the alpha-motoneuron pool because of activation from descending central pathways. Fourteen male subjects participated in 14 wk of resistance training that involved heavy weight-lifting exercises for the muscles of the leg. Evoked V-wave, H-reflex, and maximal M-wave (M-max) responses were recorded before and after training in the soleus muscle during maximal isometric ramp contractions. Maximal isometric, concentric, and eccentric muscle strength was measured by use of isokinetic dynamometry. V-wave amplitude increased similar to50% with training (P