Changes in skin impedance and heart rate variability with application of Acu-TENS to BL 13 (Feishu).

Abstract

OBJECTIVES To investigate the change of skin impedance of acupoints along the Lung meridian in response to transcutaneous electrical nervous stimulation over an acupoint (Acu-TENS) over BL13 (Feishu). DESIGN This was a double-blinded, randomized, controlled crossover study. SETTINGS/LOCATION The study was conducted in a laboratory. SUBJECTS Eighteen (18) healthy individuals comprised the study subjects. INTERVENTIONS The intervention was a session of 45-minute Acu-TENS (application of TENS on BL13, Feishu) or placebo-TENS (similar to Acu-TENS but without electrical output). OUTCOME MEASURES Skin impedance at 10 acupoints on the Lung meridian was recorded before and after the 45-minute intervention period. Heart rate variability during the intervention was analyzed from continuous heart rate monitoring. RESULTS Skin impedance at all acupoints along the lung meridian decreased significantly after Acu-TENS, when compared to placebo-TENS (p<0.05). A significant reduction in sympathetic activity was also observed after Acu-TENS (p=0.012). CONCLUSIONS Acu-TENS appears to modify skin impedance of acupoints along a related meridian and possibly modulates sympathovagal balance.

DOI: 10.1089/acm.2012.0097

Cite this paper

@article{Ngai2013ChangesIS, title={Changes in skin impedance and heart rate variability with application of Acu-TENS to BL 13 (Feishu).}, author={Shirley Pui-Ching Ngai and Alice Y. M. Jones}, journal={Journal of alternative and complementary medicine}, year={2013}, volume={19 6}, pages={558-63} }