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Acute effects of regional heat stimulation by indirect moxibustion on cardiovascular responses
Hidehiro Nakahara1, Eriko Kawai2, Tadayoshi Miyamoto3
1Graduate School of Health Sciences, Morinomiya University of Medical Sciences, 1-26-16 Nankokita, Suminoe, Osaka, 559-8611, Japan. nakahara@morinomiya-u.ac.jp.
Abstract:
Moxibustion is a traditional East Asian medicine treatment that involves burning moxa directly or indirectly on or near the skin at a specific site of the body, called an acupoint. However, whether moxibustion induces cardiovascular responses by modulating autonomic nervous activity remains unknown. The purpose of this study was to elucidate the effects of indirect moxibustion on cardiovascular responses and autonomic nervous activity. Fifteen healthy volunteers participated in the study. Each subject received regional heat stimulation by indirect moxibustion at the lower leg acupoint. Heart rate, RR intervals, blood pressure and skin temperature were measured continuously for 3 min at rest and 5 min during indirect moxibustion. Local skin temperature increased reaching a peak (45.3 ± 3.3 °C) at 2 min after moxibustion was started, and was accompanied by a significant decrease in heart rate (63.0 ± 7.8 to 60.8 ± 7.8 bpm, p < 0.05) together with a significant increase in root mean square difference of successive RR intervals. Regional heat stimulation by indirect moxibustion induced bradycardic response, which was modulated by autonomic nervous system.
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