scholarly journals Distal Traditional Acupuncture Points of the Large Intestinal Meridian and the Stomach Meridian Differently Affect Heart Rate Variability and Oxygenation of the Trapezius Muscle

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Yukiko Shiro ◽  
Young-Chang P. Arai ◽  
Tatsunori Ikemoto ◽  
Takashi Kawai ◽  
Masahiko Ikeuchi ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Acupuncture Point ◽  
Trapezius Muscle ◽  
The Body ◽  
Control Group ◽  
Acupuncture Points ◽  
Stomach Meridian ◽  
Frequency Components ◽  
Affect Heart Rate

Physicians in traditional Chinese medicine have found that acupoints and meridians have effects on specific parts of the body. The aim of this study was to see how acupressure at distal acupuncture points of a specific meridian affects heart rate variability (HRV) and oxygenation of the trapezius muscle. Forty-one female participants were randomly allocated to three groups. Subjects in the Stomach Meridian acupuncture point (ST) group received acupressure at ST 34, ST 36, and ST 41, subjects in the Large Intestinal Meridian acupuncture point (LI) group received acupressure at LI 4, LI 10, and LI 11, and subjects in the control group did not receive any stimuli. HRV and oxygenation of the trapezius muscles were measured. The high frequency components of HRV in the control and LI groups tended to be higher than those in the ST group. Total hemoglobin in the control and LI groups eventually reached significantly higher levels than in the ST group. While oxyhemoglobin (ΔO2Hb) in the control and LI groups did not change, ΔO2Hb in the ST significantly decreased temporarily.

scholarly journals Pilot Study of Acupuncture Point Laterality: Evidence from Heart Rate Variability

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Guangjun Wang ◽  
Yuying Tian ◽  
Shuyong Jia ◽  
Wenting Zhou ◽  
Weibo Zhang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Scientific Evidence ◽  
Acupuncture Point ◽  
The Body ◽  
Total Power ◽  
Acupuncture Points ◽  
Rr Intervals ◽  
The Right ◽  
Stimulation Group

The specificity of acupuncture points (acupoints) is one of the key concepts in traditional acupuncture theory, but the question of whether there is adequate scientific evidence to prove or disprove specificity has been vigorously debated in recent years. Laterality, or the tendency for acupoints on the right or left side of the body to produce different physiological effects, is an important aspect of acupoint specificity. Data is particularly scarce regarding the laterality of the same channel, same-named acupoint located on opposite sides of the body. The aim of this study was to investigate whether Neiguan (PC6) has laterality. A total of eighteen healthy female volunteers were recruited for this study. Electrocardiograms were recorded and heart rate variability was analyzed before, during, and after PC6 was stimulated on either the left or the right side. The results show that during acupuncture, there were significant differences in the standard deviation of RR intervals (STDRR), root mean square of successive differences between RR intervals (RMSSD), and total power between the left PC6 stimulation group and the right PC6 stimulation group, which indicates that PC6 may have laterality.

scholarly journals Bilateral Hegu Acupoints Have the Same Effect on the Heart Rate Variability of the Healthy Subjects

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Wang Guangjun ◽  
Tian Yuying ◽  
Jia Shuyong ◽  
Zhou Wenting ◽  
Zhang Weibo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Subjects ◽  
Scientific Evidence ◽  
The Body ◽  
Acupuncture Points ◽  
Group I ◽  
Study Results ◽  
Group Ii ◽  
The Time Domain

Background. The specificity of acupuncture points (acupoints) is one of the key concepts in traditional acupuncture theory, but the question of whether there is adequate scientific evidence to prove or disprove specificity has been vigorously debated in recent years. Acupoint laterality is an important aspect of acupoint specificity. Data is particularly scarce regarding the laterality of the same channel, namesake acupoint located on opposite sides of the body. Our previous study results suggest that Neiguan acupoint (PC6) has the laterality. The aim of this study was to investigate whether Hegu (LI4) also has laterality from the perspective of heart rate variability.Methods. A total of twenty-eight healthy female volunteers were recruited for this study and were randomly separated into the group I (n=14) and the group II (n=14) according to the register order. In the group I, left LI4 was stimulated in the first epoch and the right LI4 was stimulated in the second epoch. In the group II, right LI4 was stimulated in the first epoch and left LI4 was stimulated in the second epoch. Electrocardiogram was recorded and heart rate variability was analyzed.Results. The results show that there were no significant differences of heart rate variablity between the group I and the group II in the time domain and in the frequency domain.Conclusions. Bilateral Hegu acupoints have the same effect on the heart rate variability of the healthy subjects.

scholarly journals Effect of napping on a bean bag chair on sleep stage, muscle activity, and heart rate variability

2021 ◽  
Author(s):  
Masaki Nishida ◽  
Atsushi Ichinose ◽  
Yusuke Murata ◽  
Kohei Shioda
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sleep Stage ◽  
Muscle Relaxation ◽  
Neck Region ◽  
Trapezius Muscle ◽  
Ample Evidence ◽  
Nervous Function ◽  
Frequency Components ◽  
Bean Bag

Abstract Although ample evidence has demonstrated that daytime napping is beneficial for health and cognitive performance, bedding for napping has not yet been scientifically investigated. In this study, we assessed the effect of a bean bag chair (BC), which would automatically adjust according to body shape and size, on daytime napping and physiological parameters related to sleep, such as electroencephalogram (EEG), electromyogram (EMG), and heart rate variability (HRV). Fourteen healthy participants were enrolled within the context of a randomized, single-blind, crossover study to evaluate the effects of a BC in comparison with those of a urethane chair manufactured to have a similar shape (UR). EEG analyses revealed no significant differences in sleep architecture or frequency components; however, a significant decrease was found in EMG recordings in the trapezius muscle, which represents the neck region (p = 0.024). Additionally, a significant main effect of bedding in the LF/RF ratio (F [1, 20] = 4.314, p = 0.037) was revealed. These results suggest that napping with a BC may provide a comfortable napping environment involving muscle relaxation and proper regulation of autonomic nervous function.

scholarly journals Indicators of vegetative homeostasis in children with mitral valve prolapse before and after treatment

2019 ◽  
Vol 23 (2) ◽  
pp. 234-237
Author(s):  
A. V. Kuleshov ◽  
Y. A. Medrazhevska
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Mitral Valve ◽  
Mitral Valve Prolapse ◽  
Medical Literature ◽  
The Body ◽  
Control Group ◽  
Healthy Children ◽  
Before And After

For children with mitral valve prolapse (MVP) characterized by disorders of vegetative homeostasis, especially pronounced effect on the body sympathetic link of the autonomic nervous system. In the medical literature, the question of correction of vegetative tone in children with primary MVP is now open. The purpose of the study was to study the parameters of vegetative homeostasis in children with mitral valve prolapse before and after treatment. 66 children with primary and primary MVP stage I and II at the age of 13–17 years were examined. The control group consisted of 23 practically healthy children. The evaluation of vegetative homeostasis was performed using a clinorostatic test and cardiointervalography, followed by an analysis of the parameters and parameters of the heart rate variability spectral analysis. To restore vegetative homeostasis to patients with PMC, an existing treatment regimen with our correction was prescribed. Namely, we added therapies levocarnitine and magnesium. According to the data obtained from the CP, we found that treatment led to the normalization of vegetative maintenance of the organism, mainly in the form of a decrease in the hypersympathicotonic tonic type after treatment, along with the baseline (p<0.05). Consequently, the proposed treatment scheme with the use of levocarnitine and magnesium, positively affects the autonomic system in children with primary MVP, reducing its dysfunction.

scholarly journals The Influence of Acupressure at Extra 1 Acupuncture Point on the Spectral Entropy of the EEG and the LF/HF Ratio of Heart Rate Variability

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Young-Chang P. Arai ◽  
Takahiro Ushida ◽  
Takako Matsubara ◽  
Kazuhiro Shimo ◽  
Hiroshi Ito ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Bispectral Index ◽  
Acupuncture Point ◽  
Control Group ◽  
Spectral Entropy ◽  
Parasympathetic Nerve ◽  
Sham Point

Acupressure applied on the Extra 1 acupuncture point results in sedation, thereby reducing bispectral index (BIS) values. Mental status and hypnotic agents influence the autonomic nervous system. We hypothesized that acupressure at the Extra 1 point would induce sedation and change sympatho-parasympathetic nerve balance. We investigated the effect of acupressure at the Extra 1 point on the EEG spectral entropy values and heart rate variability (HRV). Forty-eight volunteers (24 males and 24 females) were randomly assigned to the control or Extra 1 group. The control group received acupressure at a sham point and the Extra 1 group received acupressure at the Extra 1 point. Acupressure was applied for 5 min. The record of the EEG spectral entropy values and HRV started 5 min before acupressure and stopped 5 min after acupressure. Acupressure significantly reduced the EEG spectral entropy values in both groups, but the values of the Extra 1 group were significantly smaller than those of the control group (P< .01). Acupressure significantly decreased the LF/HF ratio of HRV in both groups (P< .05). When divided upon gender, although acupressure tended to decrease the LF/HF ratio, the ratio significantly decreased during and after acupressure only in females of the Extra 1 group (P< .05). We concluded that acupressure on the Extra 1 point significantly reduced the EEG spectral entropy in both the genders, but affected the LF/HF ratio of HRV only in females.

scholarly journals Direct measurement of vagal tone in rats does not show correlation to HRV

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joseph T. Marmerstein ◽  
Grant A. McCallum ◽  
Dominique M. Durand
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Neural Activity ◽  
Vagal Tone ◽  
Neural Recording ◽  
The Body ◽  
Autonomic Nerve ◽  
Vagal Activity ◽  
Recording Technology

AbstractThe vagus nerve is the largest autonomic nerve, innervating nearly every organ in the body. “Vagal tone” is a clinical measure believed to indicate overall levels of vagal activity, but is measured indirectly through the heart rate variability (HRV). Abnormal HRV has been associated with many severe conditions such as diabetes, heart failure, and hypertension. However, vagal tone has never been directly measured, leading to disagreements in its interpretation and influencing the effectiveness of vagal therapies. Using custom carbon nanotube yarn electrodes, we were able to chronically record neural activity from the left cervical vagus in both anesthetized and non-anesthetized rats. Here we show that tonic vagal activity does not correlate with common HRV metrics with or without anesthesia. Although we found that average vagal activity is increased during inspiration compared to expiration, this respiratory-linked signal was not correlated with HRV either. These results represent a clear advance in neural recording technology but also point to the need for a re-interpretation of the link between HRV and “vagal tone”.

scholarly journals Cardiac Parasympathetic Withdrawal and Sympathetic Activity: Effect of Heat Exposure on Heart Rate Variability

2021 ◽  
Vol 18 (11) ◽  
pp. 5934
Author(s):  
Oriol Abellán-Aynés ◽  
Pedro Manonelles ◽  
Fernando Alacid
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Environmental Conditions ◽  
Sympathetic Activity ◽  
Heat Exposure ◽  
Repeated Measurements ◽  
Control Group ◽  
Poincaré Plot ◽  
Activity Effect ◽  
And Control

(1) Background: Research on heart rate variability has increased in recent years and the temperature has not been controlled in some studies assessing repeated measurements. This study aimed to analyze how heart rate variability may change based on environmental temperature during measurement depending on parasympathetic and sympathetic activity variations. (2) Methods: A total of 22 volunteers participated in this study divided into an experimental (n = 12) and control group (n = 10). Each participant was assessed randomly under two different environmental conditions for the experimental group (19 °C and 35 °C) and two identical environmental conditions for the control group (19 °C). During the procedure, heart rate variability measurements were carried out for 10 min. (3) Results: Significantly changes were observed for time and frequency domains as well as Poincaré plot variables after heat exposure (p < 0.05). These findings were not observed in the control group, whose conditions between measurements did not change. (4) Conclusions: The reduction of heart rate variability due to exposure to hot conditions appears to be produced mostly by a parasympathetic withdrawal rather than a sympathetic activation. Therefore, if consecutive measurements have to be carried out, these should always be done under the same temperature conditions.

scholarly journals Effect of Acupuncture on Heart Rate Variability: A Systematic Review

2014 ◽  
Vol 2014 ◽  
pp. 1-19 ◽  
Author(s):  
Joanne W. Y. Chung ◽  
Vincent C. M. Yan ◽  
Hongwei Zhang
Keyword(s):  
Systematic Review ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
High Frequency ◽  
Healthy Subjects ◽  
Keyword Search ◽  
Data Extraction ◽  
Meta Analysis ◽  
Low Frequency ◽  
Control Group

Aim.To summarize all relevant trials and critically evaluate the effect of acupuncture on heart rate variability (HRV).Method.This was a systematic review with meta-analysis. Keyword search was conducted in 7 databases for randomized controlled trials (RCTs). Data extraction and risk of bias were done.Results.Fourteen included studies showed a decreasing effect of acupuncture on low frequency (LF) and low frequency to high frequency ratio (LF/HF ratio) of HRV for nonhealthy subjects and on normalized low frequency (LF norm) for healthy subjects. The overall effect was in favour of the sham/control group for high frequency (HF) in nonhealthy subjects and for normalized high frequency (HF norm) in healthy subjects. Significant decreasing effect on HF and LF/HF ratio of HRV when acupuncture was performed on ST36 among healthy subjects and PC6 among both healthy and nonhealthy subjects, respectively.Discussion.This study partially supports the possible effect of acupuncture in modulating the LF of HRV in both healthy and nonhealthy subjects, while previous review reported that acupuncture did not have any convincing effect on HRV in healthy subjects. More published work is needed in this area to determine if HRV can be an indicator of the therapeutic effect of acupuncture.

HRV Biofeedback and Addiction: Rehabbing Body, Mind and Spirit

Biofeedback ◽  
2021 ◽  
Vol 49 (1) ◽  
pp. 10-17
Author(s):  
Amy Hudson
Keyword(s):  
Heart Rate ◽  
Chronic Pain ◽  
Heart Rate Variability ◽  
The Body ◽  
Heart Rate Variability Biofeedback ◽  
The Mind

Addiction is a devastating disease of the body, the mind, and even the personality. Recent research shows that heart rate variability biofeedback can help the alcoholic/addict recover in three crucial ways, namely (1) treating the associated comorbidities (depression, anxiety, chronic pain), (2) treating the physiology around craving, and (3) returning to a loving and nurturing relationship with one's own body instead of an abusive and exploitive one.

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