Effect of magnitopuncture on sympathetic and parasympathetic nerve activities in healthy drivers - assessment by power spectrum analysis of heart rate variability
Effect of magnitopuncture on sympathetic and parasympathetic nerve activities in healthy drivers - assessment by power spectrum analysis of heart rate variability
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DOI：
10.1007/s00421-002-0747-5
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发表时间：
2003-01-01
影响因子：
3
通讯作者：
Wang, CT
中科院分区：
文献类型：
--
作者：
Li, ZY;Jiao, K;Wang, CT
本研究的目的是通过对健康驾驶员模拟驾驶时心率变异性的功率谱分析，评价磁刺激大椎穴和内关穴对交感神经和副交感神经活动的影响。使用功率谱分析，可以计算反映交感神经和副交感神经活动的心率变异性的低频（LF）和高频（HF）分量。将40名健康男性随机分为两组：A组（研究组）和B组（对照组）。实验前要求所有受试者充分休息。两组受试者均被要求进行3 h的模拟驾驶任务。在驾驶过程中，A组在受试者执行任务2.5 h的同时对DU 14和PC 6点进行巨刺，B组在同一时间内分别对距离两个穴位1.5 cm的非穴位进行巨刺。在模拟任务结束后，两组学生均接受了主观问卷调查。在驾驶任务结束时，与刺激前相比，A的LF分量（NU）显著降低（P < 0.05），表明交感神经活动减少，HF分量（NU）显著增加（P < 0.05），表明副交感神经活动增加，而B没有观察到显著差异。在驾驶任务结束时，LF（NU）、HF（NU）和LF：HF组间差异有统计学意义（P < 0.05）。结论：磁刺对健康人交感神经和副交感神经活动的调节作用与穴位有关。这些发现代表了生理学证据，即磁刺激可以减少健康驾驶员的精神疲劳。
The object of this study was to assess the effects of magnitopuncture applied to Dazhui (DU14) point and Neiguan (PC6) points on sympathetic and parasympathetic nerve activities by power spectrum analysis of heart rate variability in healthy drivers during simulated driving. Using power spectrum analysis, the low frequency (LF) and high frequency (HF) components of heart rate variability can be calculated reflecting the sympathetic and parasympathetic activity. The 40 healthy male subjects were randomly divided into two groups: A (study group) and B (control group). All subjects were required to be well rested before the experiment. The subjects of both groups were required to perform a simulated driving task for 3 h. During he driving, magnitopunctures were applied to the DU14 and PC6 points for A while the subject performed the task for 2.5 h, and for B magnitopunctures were applied to non-acupuncture points which were 1.5 cm away from the two acupuncture points respectively over the same time. Subjective response to a questionnaire was obtained after the simulated task in the two groups. At the end of the driving task the LF component in normalized units (NU) had decreased significantly (P < 0.05) indicating a reduced sympathetic nerve activity and the HF component (NU) increased significantly (P < 0.05) indicating a increased parasympathetic nerve activity for A compared with pre-stimulation while for B no significant differences were observed. There were significant group differences in LF (NU), HF (NU) and LF:HF at the end of the driving task (P < 0.05). It was concluded that a modulating effect of magnitopuncture on sympathetic and parasympathetic nerve activities in healthy subjects was associated with the acupuncture points. The findings represent physiological evidence that magnitopuncture may reduce mental fatigue in healthy drivers.