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  • Physiological changes associated with de qi during electroacupuncture to LI4 and LI11: A randomised, placebo-controlled trial

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    Author(s)
    Yu, DTW
    Jones, AYM
    Griffith University Author(s)
    Jones, Alice
    Year published
    2013
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    Abstract
    Studies on the relationship between de qi intensity and activity changes in the autonomic nervous system (ANS) are scarce. This study investigates the physiological responses associated with de qi. The relationship between de qi intensity and such responses was determined. This was a single-blinded, randomised, placebo-controlled trial. A total of 36 subjects (19 men, 17 women), aged 34.5ᴮ6 years, were randomly assigned to group 1 (electroacupuncture at 2 Hz, 0.4 ms to right LI4 and LI11 for 30 min), group 2 (electroacupuncture stimulation to bilateral patellae) or group 3 (sham electroacupuncture to right LI4 and LI11 but ...
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    Studies on the relationship between de qi intensity and activity changes in the autonomic nervous system (ANS) are scarce. This study investigates the physiological responses associated with de qi. The relationship between de qi intensity and such responses was determined. This was a single-blinded, randomised, placebo-controlled trial. A total of 36 subjects (19 men, 17 women), aged 34.5ᴮ6 years, were randomly assigned to group 1 (electroacupuncture at 2 Hz, 0.4 ms to right LI4 and LI11 for 30 min), group 2 (electroacupuncture stimulation to bilateral patellae) or group 3 (sham electroacupuncture to right LI4 and LI11 but over Duoderm pads). Heart rate (HR), mean arterial blood pressure (MAP) and HR variability by low/high frequency (LF/HF) were recorded 5 min before, during and 5 min after the intervention. Needle sensations were quantified by the Modified Massachusetts General Hospital Acupuncture Sensation Scale - Chinese version (C-MMASS) and the C-MMASS index was computed. A significant increase in LF/HF, MAP and HR was observed in group 1. A small and significant increase in LF/HF was observed in group 2 but the changes in MAP and HR in groups 2 and 3 were not significant. The C-MMASS index was highest in group 1 (5.3ᱮ3), moderate in group 2 (3.5ᰮ7) and lowest in group 3 (0.77ᰮ2). A positive correlation between de qi intensity and changes in LF/HF, MAP and HR was observed. This study suggests that de qi is associated with physiological changes, and that de qi intensity increases with an increase in sympathetic discharge of the ANS.
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    Journal Title
    Acupuncture in Medicine
    Volume
    31
    Issue
    2
    DOI
    https://doi.org/10.1136/acupmed-2012-010280
    Copyright Statement
    © The Author(s) 2013. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this journal please refer to the journal’s website or contact the authors.
    Subject
    Physiotherapy
    Complementary and Alternative Medicine
    Publication URI
    http://hdl.handle.net/10072/56015
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