Zorn Carina, Szekeres Thomas, Keilani Mohammad, Fialka-Moser Veronika, Crevenna Richard
Medical University of Vienna, Spitalgasse 23, A-1090, Vienna, Austria.
Br J Sports Med. 2007 Dec;41(12):914-6. doi: 10.1136/bjsm.2007.035170.
To evaluate the effects of neuromuscular electrical stimulation (NMES) on muscle soreness and on a variety of serum parameters during and after NMES of knee extensor muscles of young, well trained subjects over a study period of 96 h.
Five male cyclists were included in this clinical observation. NMES (biphasic, asymmetric impulses) was applied through surface electrodes to both knee extensor muscles of each subject for 30 min. To determine changes in serum concentration of muscle proteins, blood samples were drawn at defined measure points before and after NMES. Muscle soreness was evaluated using a visual analogue scale at all measure points.
There was a maximum (p<0.05) for "muscle pain" during stimulation but no significant changes could be detected after the stimulation period. Serum creatine kinase showed a peak with a significant increase (p<0.05) 24 h after NMES. Serum lactate levels only increased slightly (p = 0.08) during NMES.
Although the changes of blood parameters measured in the present work correspond to those reported in the literature on eccentric strength training, no delayed onset muscle pain could be detected. Further studies should be carried out, also investigating different stimulation protocols in non-trained healthy subjects and in patients with less muscle mass.
评估神经肌肉电刺激（NMES）对年轻、训练有素的受试者股四头肌在96小时的研究期间及之后肌肉酸痛和各种血清参数的影响。
五名男性自行车运动员参与了这项临床观察。通过表面电极对每位受试者的双侧股四头肌施加NMES（双相、不对称脉冲）30分钟。为了确定肌肉蛋白血清浓度的变化，在NMES前后的特定测量点采集血样。在所有测量点使用视觉模拟量表评估肌肉酸痛情况。
刺激期间“肌肉疼痛”达到最大值（p<0.05），但刺激期后未检测到显著变化。血清肌酸激酶在NMES后24小时达到峰值且显著升高（p<0.05）。NMES期间血清乳酸水平仅略有升高（p = 0.08）。
尽管本研究中测量的血液参数变化与文献中关于离心力量训练的报道一致，但未检测到延迟性肌肉疼痛。应开展进一步研究，同时调查未经训练的健康受试者和肌肉量较少的患者的不同刺激方案。
