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KMID : 0615720110280020107
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Jouranl of Korean Acupuncture and Moxibustion society
2011 Volume.28 No. 2 p.107 ~ p.116
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Effects of Fixed-intensity and Varied-intensity Electroacupuncture on Heart Rate Variability in Healthy People with Stress Task
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Lim Sung-Keun
Lee Dong-Hua
Kwon You-Jung
Lee Jeung-Chan
Jung Chang-Jin
Kim Yong-Suk
Park Kyung-Mo
Lee Sang-Hoon
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Abstract
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Objectives : This study was performed to investigate the effects of fixed-intensity and varied-intensity electroacupuncture on heart rate variability in healthy people with stress task.
Methods : Forty healthy subjects were randomly assigned to either group A or group B or C. Group A received fixed-intensity electroacupuncture(F-EA) at ST36 and ST37. After 1 week wash out period to prevent overlapping residual effects, they received varied-intensity electroacupuncture(V-EA) in which the intensity was changed every two minutes based on individual heart rate variability at the same points. Group B received the treatments in reverse order. Group C received no intervention as a control group.
Results : Control group showed a significant increase of LF and LF/HF during the 2nd working memory task, while both F-EA and V-EA did not. In addition, V-EA showed a significant increase of HF during 2nd rest while F-EA did not.
Conclusions : These results suggest that F-EA and V-EA can inhibit sympathetic activation more than control group and that V-EA can enhance parasympathetic activation more than F-EA.
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KEYWORD
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heart rate variability, HRV, autonomic nervous system, electroacupuncture, fixed-intensity, varied-intensity
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