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首页> 外文期刊>Muscle and Nerve >COMPARISON BETWEEN THE EFFECTS OF 4 DIFFERENT ELECTRICAL STIMULATION CURRENT WAVEFORMS ON ISOMETRIC KNEE EXTENSION TORQUE AND PERCEIVED DISCOMFORT IN HEALTHY WOMEN
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COMPARISON BETWEEN THE EFFECTS OF 4 DIFFERENT ELECTRICAL STIMULATION CURRENT WAVEFORMS ON ISOMETRIC KNEE EXTENSION TORQUE AND PERCEIVED DISCOMFORT IN HEALTHY WOMEN

机译：四种不同电刺激电流波形对健康女性等速伸膝扭矩和感知不适的影响之间的比较

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Introduction: We studied the effects of different neuromuscular electrical stimulation (NMES) currents, 2 kHz-frequency alternating currents (KACs, Russian and Aussie) and 2 pulsed currents (PCs), on isometric knee extension torque and discomfort level, both in isolation and combined, with maximum voluntary contraction (MVC). Methods: Twenty-one women (age 21.6 +/- 2.5 years) were studied. We evaluated torque evoked by NMES or NMES combined with maximum voluntary contraction of the quadriceps muscle of healthy women. Discomfort level was measured using a visual analog pain scale. Results: Despite comparable levels of discomfort, evoked torque was lower for Russian current compared with the other modalities (Russian 50.8%, Aussie 71.7%, PC500 76.9%, and PC200 70.1%; P<0.001). There was no advantage in combining NMES with MVC compared with isolated NMES. Conclusions: The Aussie and PC approaches proved superior to Russian current for inducing isometric knee extension torque. This information is important in guiding decision making with regard to NMES protocols for muscle strengthening.
机译：简介：我们研究了不同的神经肌肉电刺激（NMES）电流，2 kHz频率的交流电（KAC，俄罗斯和澳大利亚）和2个脉冲电流（PC）对等距膝关节伸展扭矩和不适水平的影响，无论是隔离的还是结合最大自愿收缩（MVC）。方法：研究了21名女性（年龄21.6 +/- 2.5岁）。我们评估了由NMES或NMES引起的扭矩以及健康女性股四头肌的最大自愿收缩。使用视觉模拟疼痛量表测量不适水平。结果：尽管有相当程度的不适感，但与其他方式（俄罗斯50.8％，澳大利亚71.7％，PC500 76.9％和PC200 70.1％; P <0.001）相比，俄罗斯电流的诱发扭矩要低。与孤立的NMES相比，将NMES与MVC结合起来没有优势。结论：澳大利亚和PC方法在诱导等距膝盖伸展扭矩方面被证明优于俄罗斯。此信息对于指导有关NMES肌肉强化协议的决策至关重要。

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