Ryodoraku as a tool monitoring the effects of walking exercise

Wu, Se-Der; Gau, Jen-Tzer; Wang, Yuh-Hai

doi:10.3736/jcim20111207

Cited by 10 publications

(39 citation statements)

References 1 publication

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“…However, a similar finding was not observed for HRV. Wu et al reported that skin electrical conductance is a useful tool for detecting subtle noncardiovascular physical responses that may be more sensitive than HRV in analyzing autonomic responses [ 16 ]. The present findings are consistent with the results of their study.…”

Section: Discussionmentioning

confidence: 99%

“…The yin to yang ratio is defined as the sum of the yin meridians divided by the sum of the yang meridians. The left to right ratio means the sum of the left meridian divided by the sum of the right meridians [ 16 , 20 , 21 ].…”

Section: Methods and Measuresmentioning

confidence: 99%

“…The condition of the meridian system can be measured by its electrical characteristics which have been studied since the 1950s. Acupuncture points have been widely accepted as areas of low electrical impedance and high conductance [ 16 – 20 ]. Skin conductance response is typically measured by applying a small direct current signal through two electrodes placed on the skin [ 13 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…Skin conductance response is typically measured by applying a small direct current signal through two electrodes placed on the skin [ 13 , 21 ]. Nakatani identified 12 channels of high electrical conductance on the left and right sides of the body (24 in total) and developed the Ryodoraku theory according to the philosophy of traditional Chinese medicine (TCM) [ 16 ]. Skin electrical conductance varies with the activity of a subject's autonomic nervous system and has been used to investigate mood changes and the mechanisms of the autonomic nervous system [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Acute Physiological and Psychological Effects of Qigong Exercise in Older Practitioners

Lin

Wei²,

Wang

et al. 2018

Evidence-Based Complementary and Alternative Medicine

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Qigong is a gentle exercise that promotes health and well-being. This study evaluated the acute physiological and psychological effects of one session of qigong exercise in older practitioners. A total of 45 participants (mean age, 65.14 years) were recruited. Meridian electrical conductance, State-Trait Anxiety Inventory (STAI), heart rate variability (HRV), and Short Form 36 (SF-36) were evaluated and compared before and after one session of qigong exercise. The results revealed that the electrical conductance of all meridians, except spleen and bladder meridians, increased significantly (p < 0.05). Compared with baseline values, upper to lower body ratio and sympathetic/vagal index were significantly improved and closer to 1 (p = 0.011 and p = 0.007, resp.). STAI-S and STAI-T scores decreased significantly (p < 0.001 and p = 0.001, resp.). The RR interval of HRV decreased significantly (p = 0.035), a significant positive correlation was observed between kidney meridian electrical conductance and SF-36 physical scores (r = 0.74, p = 0.018), and a positive correlation was observed between pericardium meridian electrical conductance and SF-36 mental scores (r = 0.50, p = 0.06). In conclusion, one session of qigong exercise increased meridian electrical conductance, reduced anxiety, and improved body and autonomic nervous system balance. These findings provide scientific evidence for acute physiological and psychological effects of qigong exercise in older practitioners.

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Section: Discussionmentioning

confidence: 99%

Section: Methods and Measuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acute Physiological and Psychological Effects of Qigong Exercise in Older Practitioners

Lin

Wei²,

Wang

et al. 2018

Evidence-Based Complementary and Alternative Medicine

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“…These points are the acupoints recognized in Chinese medicine. In this study, a Ryodoraku device was used to measure the conductivity of these points, which can be used as an index for the quality of meridians [34].…”

Section: Effect Of Lifting and Thrusting On The Meridiansmentioning

confidence: 99%

Emulated laser-acupuncture system

Chang

Kuo

et al. 2014

Appl. Opt.

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A novel laser-acupuncture system was developed that can be used to implement the manipulation methods of traditional acupuncture, such as lifting and thrusting. A 780 nm laser diode with a maximum power of 90 mW was used as the light source. The focus point of the laser beam was adjustable by changing the position of the lens, facilitating the implementation of the lifting and thrusting methods of traditional Chinese medicine and achieving various stimulation depths at the acupuncture point. The images for the light spots from the outlet of the emulated laser acupuncture were captured at various distances and their sizes were calculated. The result showed that the diameter of the focused light spot (i.e., at the focus point) was 0.11 mm, which is close to the diameter of commonly used needles (with diameters of approximately 0.22 mm). The area of the light spot 1 cm from the focus point was approximately 50 times larger, indicating that the unit power might be 1/50 of the power of the focus point. To study the effect of emulated laser acupuncture on human meridians, after stimulating the Shenmen point (HT7) of five subjects and obtaining their Ryodoraku values of the heart meridian and the small-intestine meridian, a paired t test showed that the laser stimulation incorporating lifting and thrusting was significantly higher than the laser stimulation without lifting and thrusting (p<0.05). The result is consistent with traditional acupuncture in that acupuncture incorporating lift and thrust is more effective than that without lift and thrust.

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