Effects of Fixed-intensity and Varied-intensity Electroacupuncture on Heart Rate Variability in Healthy People with Stress Task

고정자극 전침과 변동자극 전침의 정상인 스트레스에 대한 심박변이도 변화 연구

  • Lim, Sung-Keun (Dept. of Acupuncture and Moxibustion, College of Oriental Medicine, Kyung Hee University) ;
  • Lee, Dong-Hua (Dept. of Acupuncture and Moxibustion, College of Oriental Medicine, Kyung Hee University) ;
  • Kwon, You-Jung (Dept. of Acupuncture and Moxibustion, College of Oriental Medicine, Kyung Hee University) ;
  • Lee, Jeung-Chan (Dept. of Biomedical Engineering, College of Electronics & Information, Kyung Hee University) ;
  • Jung, Chang-Jin (Dept. of Biomedical Engineering, College of Electronics & Information, Kyung Hee University) ;
  • Kim, Yong-Suk (Dept. of Acupuncture and Moxibustion, College of Oriental Medicine, Kyung Hee University) ;
  • Park, Kyung-Mo (Dept. of Biomedical Engineering, College of Electronics & Information, Kyung Hee University) ;
  • Lee, Sang-Hoon (Dept. of Acupuncture and Moxibustion, College of Oriental Medicine, Kyung Hee University)
  • 임성근 (경희대학교 한의과대학 침구학교실) ;
  • 이동화 (경희대학교 한의과대학 침구학교실) ;
  • 권유정 (경희대학교 한의과대학 침구학교실) ;
  • 이정찬 (경희대학교 전자정보대학 생체의공학과) ;
  • 정창진 (경희대학교 전자정보대학 생체의공학과) ;
  • 김용석 (경희대학교 한의과대학 침구학교실) ;
  • 박경모 (경희대학교 전자정보대학 생체의공학과) ;
  • 이상훈 (경희대학교 한의과대학 침구학교실)
  • Received : 2011.03.09
  • Accepted : 2011.04.07
  • Published : 2011.04.20

Abstract

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 $ST_{36}$ and $ST_{37}$. 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.

Keywords

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