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 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 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 Autonomic Function test in person with Obesity aAmong Mid-Western Population of Nepal

2017 ◽  
Vol 15 (2) ◽  
pp. 18-22
Author(s):  
Bhawana Neupane Pant ◽  
Rajesh Kumar Goit ◽  
Manoj Panta ◽  
Ashish Neupane ◽  
Pushpa Bhargava
Keyword(s):  
Heart Rate ◽  
Autonomic Dysfunction ◽  
Cold Water ◽  
The Body ◽  
Health Concern ◽  
Obese Person ◽  
Predisposing Factor ◽  
Indirect Measure ◽  
Group I ◽  
Group Ii

Objective: Autonomic dysfunction qualifies a major public health problems owing to their high prevalence and incidence globally. Among many predisposing factor of autonomic neuropathy such as age, gender, genetic, diabetes etc, obesity also has significant . impact Although a lot of progress has been achieved in past decade on accessibility and awareness about health, the obesity remains impending and burgeoning health concern in Nepal. With this trend, we can foresee that the Body Mass Index (BMI) one of the commonly used indirect measure of obesity, might potentially turn out to be one of the leading factor of autonomic dysfunction. Methods: 100 healthy subjects were screened and divided into 2 groups- Group I (BMI>30) and Group II (BMI< 30). Height & weight were measured & BMI was calculated. Resting heart rate (RHR) was recorded with Lead II of ECG. Blood pressure (BP) and Heart Rate (HR) were recorded in supine position and on immediate standing. Cold pressure test (CPT): Resting BP was recorded in sitting position. Then the subjects were asked to immerse the hand in cold water, and the BP was measured from other hand. Data was analyzed using SPSS 16 (Statistical Package for Social Science). Result: Our result showed that RHR of Group I (79.32±4.22) was higher than that of Group II (74.38±7.26). However, on student –T test, BP and HR response to immediate standing (P=0.34 &P=0.23 respectively) were non-significant between group I and group II person. When the correlation was done for the change in BP in response to CPT in between obese and non-obese person it was found to be significant (P=0.04). Conclusion: Our data suggests that the BMI can be a predictor of autonomic dysfunction.  

scholarly journals THE SUCCESS OF HEART RATE VARIABILITY BIOFEEDBACK PARAMETERS IN PERSONS WITH DIFFERENT LEVELS OF BLOOD PRESSURE

2013 ◽  
Vol 68 (7) ◽  
pp. 20-23
Author(s):  
L. V. Poskotinova ◽  
D. B. Demin ◽  
E. V. Krivonogova ◽  
M. N. Dieva ◽  
N. M. Khasanova
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Antihypertensive Drugs ◽  
Heart Rhythm ◽  
Total Power ◽  
Heart Rate Variability Biofeedback ◽  
Group Iii ◽  
Group I ◽  
Group Ii

Objective. The aim was to determine the nature of cardiovascular reactions during a single session of heart rate variability (HRV) biofeedback in order to increase vagal effects on heart rhythm in patients with different initial levels of blood pressure (BP). Participants and methods. 33 people with normal blood pressure (group I), 20 people with uncorrected arterial hypertension (AH) grade 1-2 (group II) and 22 people with AH grade 1-2 taking antihypertensive drugs (group III) were observed. The parameters of heart rate variability (HRV), BP and pulse oximetry in the initial stage, during a single HRV biofeedback session and after this session in order to increase the total power of the HRV spectrum (each stage was 5 min). Results. In patients of group II low success of HRV biofeedback session, a high sympathetic reactivity and reduced oxygen blood saturation were determined. A reactivity of vagal mechanism is more pronounced in persons of group III than in those of group II. It is reflected in a significant increase in their total power of the HRV spectrum compared to the initial values and in uptrend saturation levels during the biofeedback session. Conclusions. The ability to HRV biofeedback in order to increase the total power of the HRV spectrum for standard short recording (5 min) can be seen as a test to determine the safety reserves of vagal autonomic cardiovascular regulation in persons with increased blood pressure. 

scholarly journals A Comparison of Using Crystalloid Preloading and Co-Loading in Caesarean Section Operation Under Spinal Anaesthesia and Its Association with Spinal Anaesthesia Induced Hypotension and Heart Rate Variability

2021 ◽  
Vol 29 (1) ◽  
pp. 12-17
Author(s):  
Taneem Mohammad ◽  
Miliva Mozaffor ◽  
Shamima Akter ◽  
Mohammad Obaidullah ◽  
Mohammad Abdul Karim Miah ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spinal Anesthesia ◽  
Spinal Anaesthesia ◽  
Controlled Clinical Trial ◽  
Induced Hypotension ◽  
Medical College ◽  
Group I ◽  
Section Operation ◽  
Group Ii

Context: There is lack of evidence on comparison of crystalloid pre-loading and co-loading in parturients undergoing cesarean section operation under spinal anesthesia in Bangladesh. Hence, the present study was designed to compare the efficacy of crystalloid pre-loading and co-loading in preventing spinal anesthesia induced hypotension and heart rate variability during caesarean delivery. Methods: This single blinded randomized controlled clinical trial was conducted in the Department of Anaesthesia, Analgesia & Intensive Care, Dhaka Medical College Hospital, Dhaka, Bangladesh, from January 2013 to December 2014. A total of 90 patients were selected - 45 patients of group I received co-loading with Ringer’s lactate solution, while another 45 patients of group II received a pre-loading with the same fluid. Blood pressure and heart rate were recorded in both the groups with 3-minute intervals from the beginning of the subarachnoid block for the first 20 minutes, and then with 5-minute intervals up to one hour. Ephedrine was used as the primary rescue drug to treat hypotension. When ephedrine failed to treat hypotension, adrenaline was administered as a potent vasopressor. Results: The incidence of hypotension was 17 (37.8%) in group I (co-loading group) and 27 (60%) in group II (pre-loading group), which was significantly higher in group II (p<0.05). Comparatively higher heart rate was observed in group II, but not statistically significant. Ephedrine was required in 17 cases (37.8%) in group I and 27 cases (60%) in group II. Mean ephedrine required was 9.2±3.6 mg in group I and 11.5±4.3 mg in group II. The difference was statistically significant (p<0.05). Adrenaline was administered in 1 case (2.2%) in group I and in 2 cases (4.4%) in group II, which was not statistically significant (p>0.05). Conclusion: Severity of hypotension and increased ephedrine requirement were evident in patients who received crystalloid pre-loading (group II), which means crystalloid co-loading (group I) was more capable to prevent spinal anaesthesia induced hypotension. J Dhaka Medical College, Vol. 29, No.1, April, 2020, Page 12-17

Regional Frontal Lobe Response Magnitudes During Affective Shifting Covary With Resting Heart Rate Variability in Healthy Volunteers

2016 ◽  
Vol 30 (4) ◽  
pp. 165-174 ◽  
Author(s):  
Ryan Smith ◽  
John J.B. Allen ◽  
Julian F. Thayer ◽  
Richard D. Lane
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Subjects ◽  
Emotional Reactivity ◽  
Bold Signal ◽  
Resting Heart Rate ◽  
Functional Magnetic Resonance ◽  
Absolute Value ◽  
Cardiac Vagal Control ◽  
Resting Heart Rate Variability

Abstract. We hypothesized that in healthy subjects differences in resting heart rate variability (rHRV) would be associated with differences in emotional reactivity within the medial visceromotor network (MVN). We also probed whether this MVN-rHRV relationship was diminished in depression. Eleven healthy adults and nine depressed subjects performed the emotional counting stroop task in alternating blocks of emotion and neutral words during functional magnetic resonance imaging (fMRI). The correlation between rHRV outside the scanner and BOLD signal reactivity (absolute value of change between adjacent blocks in the BOLD signal) was examined in specific MVN regions. Significant negative correlations were observed between rHRV and average BOLD shift magnitude (BSM) in several MVN regions in healthy subjects but not depressed subjects. This preliminary report provides novel evidence relating emotional reactivity in MVN regions to rHRV. It also provides preliminary suggestive evidence that depression may involve reduced interaction between the MVN and cardiac vagal control.

Influence of ageing on circadian rhythm of heart rate variability in healthy subjects

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Agostino Accardo ◽  
Marco Merlo ◽  
Giulia Silveri ◽  
Lucia Del Popolo ◽  
Luca Dalla Libera ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Circadian Rhythm ◽  
Healthy Subjects

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 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.

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