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Effects of Essential Oils Used in Aromatherapy on the Autonomic Nervous System:A study using three different methods Chisato Nagamachi 1 , Mai Ono 1 , Yasuki Hen 1 , Kazuna Miyamoto 1 , Ikuko Taniguchi 1 , Yuzu Suzuki 1 , Junko Maekawa 1 , Mariko Takada 1 , Emi Sakaguchi 1 , Hiroko Oowada 1 , Yoshifumi Horikawa 1 , Tetsuya Sumiyoshi 1 1Sakakibara Heart Institue Clinic Keyword: アロマセラピー , 心拍変動 , 精油 , aromatic therapy , heart rate variability , essential oil pp.1171-1177
Published Date 2010/11/15
DOI https://doi.org/10.11477/mf.1404101584
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 We examined the effects of essential oils on the autonomic nervous system in healthy adults, using three different inhaling methods. The heart rate, blood pressure, power spectral analysis of heart rate variability(HF, LF/HF)and salivary amylase activity were measured before and after inhaling for 5 min lying supine on a bed(method 1), before and after inhaling for 5 min while watching a video in a sitting position(method 2), or with or without inhaling a continuous indoor diffusion during a mental arithmetic stress test(method 3). In method 1, no significant differences in the measurements were detected. In method 2, heart rate was lowered(-2.6±3.9/min;p=0.03), while HF(125±47%;p=0.05)and salivary amylase activity were elevated(136±35%, p=0.03). In method 3, LF/HF(no inhalation 279±239% vs. inhalation 122±66%;p=0.05)and salivary amylase activity(no inhalation 113±30% vs. inhalation 90±23%;p=0.02)were both significantly reduced during mental arithmetic stress. Short inhalation of essential oils suppresses parasympathetic nervous activation while continuous inhalation during mental arithmetic stress suppresses sympathetic nervous activation. Power spectral analysis of heart rate variability is useful for assessing the effects of essential oils.


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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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