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首页> 外文期刊>Archives of Physical Medicine and Rehabilitation >Effects of carrier frequency of interferential current on pressure pain threshold and sensory comfort in humans
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Effects of carrier frequency of interferential current on pressure pain threshold and sensory comfort in humans

机译：干扰电流的载频对人体压力痛阈值和感觉舒适度的影响

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Objective: To assess the effect of carrier frequency of interferential current (IFC) on pressure pain threshold (PPT) and sensory comfort in healthy subjects. Design: A double-blind randomized trial. Setting: University research laboratory. Participants: Healthy subjects (N=150). Interventions: Application of the IFC for 20 minutes and measures of PPT collected in the regions of the nondominant hand and forearm. Main Outcomes Measures: We measured PPT and comfort at frequencies of 1kHz, 2kHz, 4kHz, 8kHz, and 10kHz. Results: There was a significant increase in PPT in the 1-kHz group when compared with the 8-kHz and 10-kHz groups. There was a greater discomfort in the 1-kHz and 2-kHz groups. Conclusions: IFC with a carrier frequency of 1kHz promotes a higher hypoalgesic response during and after stimulation than IFC with carrier frequencies of 8kHz and 10kHz. Carrier frequencies of 1kHz and 2kHz are perceived as more uncomfortable than carrier frequencies of 4kHz, 8kHz, and 10kHz.
机译：目的：评估干扰电流的载波频率（IFC）对健康受试者的压力痛阈值（PPT）和感觉舒适度的影响。设计：一项双盲随机试验。地点：大学研究实验室。参加者：健康受试者（N = 150）。干预：应用IFC 20分钟，并在非主要手和前臂区域收集PPT的量度。主要指标：我们在1kHz，2kHz，4kHz，8kHz和10kHz频率下测量了PPT和舒适度。结果：与8kHz和10kHz组相比，1-kHz组的PPT显着增加。 1-kHz和2-kHz组的不适感更大。结论：载频为1kHz的IFC在刺激过程中和刺激后比起载频为8kHz和10kHz的IFC促进了更高的痛觉过敏反应。 1kHz和2kHz的载波频率比4kHz，8kHz和10kHz的载波频率更不舒服。

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