scholarly journals Heart rate variability in cross-country skiers with different baseline heart rate

2021 ◽  
pp. 15-23
Author(s):  
Александр Леонидович Марков ◽  
Юрий Григорьевич Солонин
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Supine Position ◽  
Parasympathetic Nervous System ◽  
Baseline Heart Rate ◽  
Absolute Power ◽  
Cross Country ◽  
Group 2 ◽  
Vlf Waves ◽  
Group 1

У 83 мужчин из сборных Республики Коми по лыжным гонкам с помощью комплекса «Экосан-2007» проведен анализ вариабельности сердечного ритма (ВСР) в положении лежа и стоя (ортостатическая проба). Возраст спортсменов составлял от 18 до 30 лет. Для выявления особенностей ВСР у лиц с разной исходной частотой сердечных сокращений (ЧСС) добровольцы были разделены на две группы (группа 1 - ЧСС от 40 до 55 уд/мин, n=45; группа 2 - ЧСС 56-70 уд/мин, n=38). Исходная ЧСС была измерена в покое лежа. В положении лежа у спортсменов из группы 1 статистически значимо выше значения временных показателей (RMSSD, pNN50, SDNN), абсолютная мощность VLF-волн и ниже относительная мощность LF-волн, SI, LF/HF, чем у добровольцев из группы 2. При ортостазе у мужчин из обеих групп наблюдались однонаправленные сдвиги по большинству параметров ВСР. Однако у лыжников из группы 2 также выявлен статистически значимый рост значений абсолютной мощности LF- и VLF-волн. При анализе сдвигов параметров ВСР при ортостазе у лыжников группы 2 выявлены более выраженные снижения SDNN, TP, абсолютных значений HF-, LF- и VLF-волн, при этом рост ЧСС был более выраженным у лиц из группы 1. Установлено, что на вегетативную регуляцию ритма сердца в положении лежа у мужчин из группы 1, по сравнению с добровольцами из группы 2, большее влияние оказывает парасимпатическая нервная система, при этом роль более высоких уровней регуляции снижена. Аналогичные закономерности выявлены и при ортостазе. Heart rate variability (HRV) analysis was carried out in 83 men from the national teams of the Komi Republic in cross-country skiing using the Ecosan-2007 complex in the lying and standing positions (orthostatic test). The age of the athletes ranged from 18 to 30 years old. To identify the features of HRV in individuals with different heart rates, the volunteers were divided into two groups (group 1 - heart rate from 40 to 55 beats / min, n = 45; group 2 - heart rate 56-70 beats/min, n = 38). Baseline heart rate was measured at rest lying down. In the supine position, athletes from group 1 have statistically significantly higher values of time parameters (RMSSD, pNN50, SDNN), absolute power of VLF waves and lower relative power of LF waves, SI, LF/HF, than volunteers from group 2. With orthostasis in men from both groups, unidirectional shifts in most HRV parameters were observed. However, skiers from group 2 also showed a statistically significant increase in the absolute power of LF and VLF waves. When analyzing the shifts in HRV parameters during orthostasis in skiers of group 2, more pronounced decreases in SDNN, TP, absolute values of HF-, LF- and VLF-waves were revealed, while the increase in heart rate was more pronounced in persons from group 1. It was found that the autonomic regulation of the heart rate in the supine position in men from group 1, compared with volunteers from group 2, is more influenced by the parasympathetic nervous system, while the role of higher levels of regulation is reduced. Similar patterns were found in orthostasis.

scholarly journals Postural Changes on Heart Rate Variability among Older Population: A Preliminary Study

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Warawoot Chuangchai ◽  
Wiraporn Pothisiri
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Supine Position ◽  
Parasympathetic Nervous System ◽  
Standing Position ◽  
Future Research ◽  
Sitting Position ◽  
Older Individuals ◽  
Postural Changes

Objective. This study aims to investigate an association between body postures and autonomic nervous system (ANS) responses through analysis of short-term heart rate variability (HRV) data obtained through electrocardiography. Methods. Forty older individuals were recruited to form the sample. HRV measurements were taken in three positions—sitting, supine, and standing—and compared. Results. Results demonstrated statistically significant differences in the HRV parameters used to examine the parasympathetic nervous system (PNS) and the sympathetic nervous system (SNS), specifically in the measurements obtained from the sitting position and the supine position ( P  < 0.001 for PNS and P  = 0.011 for SNS). The differences in these parameters were, however, negligible between the sitting and the standing positions. Moreover, the ANS responses obtained in the sitting position were strongly and positively correlated with those in the standing position (r = 0.854 for PNS and r = 0.794 for SNS). These results suggested that the PNS and SNS parameters obtained while sitting were likely to be affected by orthostatic hypotension in much the same way as those in the standing position, as compared to the supine position. Conclusions. As such, sitting may not be the best position for older individuals in the assessment of their autonomic responses, whereas the supine position is recommended as the baseline posture in the old-age population. These findings are useful for future research in clinical settings that require accuracy in the ANS responses as determined by the HRV measurements.

scholarly journals Effect of amitriptyline and pregabalin on heart rate variability and electrolytes in neurotrophic pain in diabetic patients

2021 ◽  
Vol 11 (1) ◽  
pp. 52
Author(s):  
Rohan Srivastava ◽  
N. D. Kantharia
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Neuropathic Pain ◽  
Pain Intensity ◽  
Diabetic Patients ◽  
Serum Electrolyte ◽  
Open Label ◽  
Group 2 ◽  
Sodium And Potassium ◽  
Group 1

Background: The data regarding effects of amitriptyline and pregabalin on heart rate variability in patients with neuropathic pain in diabetic patients are poorly understood in India. The present study was conducted to evaluate the effect of amitriptyline and pregabalin on heart rate variability in diabetic patients with neuropathic pain and their effect on serum electrolyte (sodium and potassium).Methods: The patients include 60 diabetic patients of either sex aged 18-65 years diagnosed with neuropathic pain and divided into two groups. The study was prospective open label and observational study. Group 1 was treated with amitriptyline 10 mg once a day while group 2 with pregabalin 75 mg once a day and HRV, serum sodium and serum potassium levels and pain score were recorded; and data of post-treatment at 2 and 4 weeks were compared with pretreatment values (control). All the statistical analysis was performed by using SPSS 20.0 software.Results: Both the drugs have increased HRV and reduced neuropathic pain intensity after 2 and 4 weeks treatment. The sodium and potassium level were not altered by these drugs. No correlation was observed between HRV and neuropathic pain.Conclusions: In conclusion, both the amitriptyline and pregabalin have significantly increased HRV and reduced the neuropathic pain intensity; but no correlation was observed between increased HRV and reduced neuropathic pain intensity.

scholarly journals The effect of ivabradine as part of standard therapy on vascular endothelial function and cardiac electrical instability in patients with post-infarction cardiosclerosis and heart failure

2020 ◽  
Vol 25 (1) ◽  
pp. 52-58
Author(s):  
A. A. Abdullaev ◽  
S. N. Mammaev ◽  
A. A. Anatova ◽  
U. A. Islamova ◽  
A. M. Makhacheva
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Endothelial Dysfunction ◽  
Myocardial Ischemia ◽  
Endothelial Function ◽  
Standard Therapy ◽  
Electrical Instability ◽  
Group 2 ◽  
Group 1

Aim. To reveal the equivalence of nebivolol replacement with ivabradine in the prevention of endothelial dysfunction and cardiac electrical instability in patients with heart failure with reduced ejection fraction (HFrEF).Material and methods. In current observational study, 126 patients with HFrEF in the postinfarction period were randomized into two groups for six-month treatment: group 1 (n=62) — standard therapy (acetylsalicylic acid 0,1 g/day, clopidogrel 75 mg/day, veroshpiron 50 mg/day, nebivolol 5 mg/day, perindopril 5 mg/day and rosuvastatin 20 mg/day; group 2 (n=66) — the same therapy with nebivolol replacement with ivabradine 10 mg/day. Initially and after 6 months, 24-hour Holter monitoring was performed, heart rate variability was determined. We also investigated endothelial dysfunction using the photoplethysmographic technique with post-occlusive reactive hyperemia (PORH) test.Results. The heart rate, the number of episodes and the duration of symptomatic and silent myocardial ischemia, total myocardial ischemia were significantly decreased in both groups (p<0,001). The decrease of supraventricular extrasystole frequency in both groups had not statistical significance (p>0,05). In both groups, after therapy, parameters of heart rate variability were improved with the parasympathetic predominance (p<0,01). In both groups, the PORH test revealed the increase of brachial artery diameter (group 1 — 5,90Ѓ}3,15% and group 2 — 5,88Ѓ}1,82%) and pulse wave amplitude (group 1 — 1,81Ѓ}0,78 and group 2 — 1,73Ѓ}0,90 times), which indicates a trend towards an improvement in endothelial function. Intergroup comparisons did not reveal significant differences.Conclusion. Ivabradine is equivalent to nebivolol in preventing ventricular extrasystole and reducing heart rate, number of episodes of symptomatic and silent ischemia and the duration of total myocardial ischemia in patients with HFrEF. Ivabradine equivalently to nebivolol improves endothelial function and heart rate variability with reducing the sympathetic activity.

Creation of physiologic rhythm by closed loop stimulation in heart failure patients with severe chronotropic incompetence: worldwide first results of a pilot study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Proff ◽  
B Merkely ◽  
R Papp ◽  
C Lenz ◽  
P.J Nordbeck ◽  
...  
Keyword(s):  
Heart Rate ◽  
Closed Loop ◽  
Funding Source ◽  
Chronotropic Incompetence ◽  
First Results ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background The prevalence of chronotropic incompetence (CI) in heart failure (HF) population is high and negatively impacts prognosis. In HF patients with an implanted cardiac resynchronisation therapy (CRT) device and severe CI, the effect of rate adaptive pacing on patient outcomes is unclear. Closed loop stimulation (CLS) based on cardiac impedance measurement may be an optimal method of heart rate adaptation according to metabolic need in HF patients with severe CI. Purpose This is the first study evaluating the effect of CLS on the established prognostic parameters assessed by the cardio-pulmonary exercise (CPX) testing and on quality of life (QoL) of the patients. Methods A randomised, controlled, double-blind and crossover pilot study has been performed in CRT patients with severe CI defined as the inability to achieve 70% of the age-predicted maximum heart rate (APMHR). After baseline assessment, patients were randomised to either DDD-CLS pacing (group 1) or DDD pacing at 40 bpm (group 2) for a 1-month period, followed by crossover for another month. At baseline and at 1- and 2-month follow-ups, a CPX was performed and QoL was assessed using the EQ-5D-5L questionnaire. The main endpoints were the effect of CLS on ventilatory efficiency (VE) slope (evaluated by an independent CPX expert), the responder rate defined as an improvement (decrease) of the VE slope by at least 5%, percentage of maximal predicted heart rate reserve (HRR) achieved, and QoL. Results Of the 36 patients enrolled in the study, 20 fulfilled the criterion for severe CI and entered the study follow-up (mean age 68.9±7.4 years, 70% men, LVEF=41.8±9.3%, 40%/60% NYHA class II/III). Full baseline and follow-up datasets were obtained in 17 patients. The mean VE slope and HRR at baseline were 34.4±4.4 and 49.6±23.8%, respectively, in group 1 (n=7) and 34.5±12.2 and 54.2±16.1% in group 2 (n=10). After completing the 2-month CPX, the mean difference between DDD-CLS and DDD-40 modes was −2.4±8.3 (group 1) and −1.2±3.5 (group 2) for VE slope, and 17.1±15.5% (group 1) and 8.7±18.8% (group 2) for HRR. Altogether, VE slope improved by −1.8±2.95 (p=0.31) in DDD-CLS versus DDD-40, and HRR improved by 12.9±8.8% (p=0.01). The VE slope decreased by ≥5% in 47% of patients (“responders to CLS”). The mean difference in the QoL between DDD-CLS and DDD-40 was 0.16±0.25 in group 1 and −0.01±0.05 in group 2, resulting in an overall increase by 0.08±0.08 in the DDD-CLS mode (p=0.13). Conclusion First results of the evaluation of the effectiveness of CLS in CRT patients with severe CI revealed that CLS generated an overall positive effect on well-established surrogate parameters for prognosis. About one half of the patients showed CLS response in terms of improved VE slope. In addition, CLS improved quality of life. Further clinical research is needed to identify predictors that can increase the responder rate and to confirm improvement in clinical outcomes. Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Biotronik SE & Co. KG

scholarly journals Heart rate variability and depressive symptoms: a cross-lagged analysis over a 10-year period in the Whitehall II study

2016 ◽  
Vol 46 (10) ◽  
pp. 2121-2131 ◽  
Author(s):  
V. K. Jandackova ◽  
A. Britton ◽  
M. Malik ◽  
A. Steptoe
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Depressive Symptoms ◽  
General Health Questionnaire ◽  
Antidepressant Medication ◽  
Population Based ◽  
Baseline Heart Rate ◽  
Lower Baseline ◽  
The Uk

BackgroundPeople with depression tend to have lower heart rate variability (HRV), but the temporal sequence is poorly understood. In a sample of the general population, we prospectively examined whether HRV measures predict subsequent depressive symptoms or whether depressive symptoms predict subsequent levels of HRV.MethodData from the fifth (1997–1999) and ninth (2007–2009) phases of the UK Whitehall II longitudinal population-based cohort study were analysed with an average follow-up of 10.5 years. The sample size for the prospective analysis depended on the analysis and ranged from 2334 (644 women) to 2276 (602 women). HRV measures during 5 min of supine rest were obtained. Depressive symptoms were evaluated by four cognitive symptoms of depression from the General Health Questionnaire.ResultsAt follow-up assessment, depressive symptoms were inversely associated with HRV measures independently of antidepressant medication use in men but not in women. Prospectively, lower baseline heart rate and higher HRV measures were associated with a lower likelihood of incident depressive symptoms at follow-up in men without depressive symptoms at baseline. Similar but statistically insignificant associations were found in women. Adjustments for known confounders including sociodemographic and lifestyle factors, cardiometabolic conditions or medication did not change the predictive effect of HRV on incident depressive symptoms at follow-up. Depressive symptoms at baseline were not associated with heart rate or HRV at follow-up in either sex.ConclusionsThese findings are consistent with an aetiological role of the autonomic nervous system in depression onset.

scholarly journals Effects of exercise on cardiac autonomic modulation in children: literature update

2015 ◽  
Vol 28 (3) ◽  
pp. 627-636 ◽  
Author(s):  
Gustavo Henrique de Oliveira Mondoni ◽  
Luiz Carlos Marques Vanderlei ◽  
Bruno Saraiva ◽  
Franciele Marques Vanderlei
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Parasympathetic Nervous System ◽  
Healthy Children ◽  
Autonomic Modulation ◽  
Healthy Development ◽  
Autonomic Nervous ◽  
Cardiac Autonomic Modulation

AbstractIntroduction It is known that physical exercise is beneficial and precipitates adjustments to the autonomic nervous system. However, the effect of exercise on cardiac autonomic modulation in children, despite its importance, is poorly investigated.Objective To bring together current information about the effects of exercise on heart rate variability in healthy and obese children.Methods The literature update was performed through a search for articles in the following databases; PubMed, PEDro, SciELO and Lilacs, using the descriptors “exercise” and “child” in conjunction with the descriptors “autonomic nervous system”, “sympathetic nervous system”, “parasympathetic nervous system” and also with no descriptor, but the key word of this study, “heart rate variability”, from January 2005 to December 2012.Results After removal of items that did not fit the subject of the study, a total of 9 articles were selected, 5 with healthy and 4 with obese children.Conclusion The findings suggest that exercise can act in the normalization of existing alterations in the autonomic nervous system of obese children, as well as serve as a preventative factor in healthy children, enabling healthy development of the autonomic nervous system until the child reaches adulthood.

Comparison of Baseline Heart Rate Variability in Stable Ischemic Heart Disease Patients with and without Stroke in Long-Term Observation

2016 ◽  
Vol 25 (10) ◽  
pp. 2526-2534 ◽  
Author(s):  
Michał Kuzemczak ◽  
Paulina Białek-Ławniczak ◽  
Katarzyna Torzyńska ◽  
Agnieszka Janowska-Kulińska ◽  
Izabela Miechowicz ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Heart Disease ◽  
Ischemic Heart Disease ◽  
Ischemic Heart ◽  
Baseline Heart Rate ◽  
Stable Ischemic Heart Disease ◽  
Long Term Observation

scholarly journals Changes in Respiratory Rate, Blood Pressure and Heart Rate Variability in Rabbits during Orthostasis

2006 ◽  
Vol 75 (1) ◽  
pp. 3-12 ◽  
Author(s):  
J. Mokrý ◽  
T. Remeňová ◽  
K. Javorka
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Respiratory Rate ◽  
Supine Position ◽  
Spectral Power ◽  
Systemic Blood Pressure ◽  
Microcomputer System ◽  
Systemic Blood ◽  
Frequency Bands

The purpose of the study was to evaluate the changes of respiratory rate, systemic blood pressure and heart rate variability parameters (HRV) during orthostasis in anaesthetized rabbits. Furthermore, these changes were influenced by affecting the renin-angiotensin-aldosterone (RAA) system and autonomic nervous system (ANS) to study the mechanisms participating in activity of spectral frequency bands of HRV in rabbits. Ten adult rabbits (Chinchilla) were anaesthetized by ketamine and flunitrazepam. The systemic blood pressure, tidal volume and respiratory rate were measured. HRV was evaluated by microcomputer system VariaPulse TF3E. The R-R intervals were derived from the electrocardiogram signal from subcutaneous needle electrodes. The evaluation of HRV in very low (VLF; 0.01-0.05 Hz), low (LF; 0.05-0.15 Hz) and high frequency bands (HF; 0.15-2.0 Hz) was made and parameters of frequency and time analysis were calculated. The measurements were made in horizontal (supine) position, in orthostasis (the angle of 60 °) and again in supine position before and after enalapril (0.5 mg/kg b.w.), metipranolol (0.2 mg/kg b.w.), and after subsequent bilateral cervical vagotomy. The orthostasis in anaesthetized rabbits is accompanied by depression of respiratory rate reversed only by vagotomy. Furthermore, decrease of systemic blood pressure, unchanged heart rate and increased characteristics of heart rate variability were found, with predominant increase of spectral power in LF and VLF bands. This elevation can be eliminated only by complete blockade of ANS. Although the participation of ANS or RAA system in modification of individual HRV frequency bands is not as specific as in humans, we confirmed the participation of RAA system in determination of the VLF band.

scholarly journals Possibilities of cardioselective beta - blocker bisoprolol therapy in patients having coronary artery disease and bronchial asthma

2019 ◽  
Vol 91 (9) ◽  
pp. 26-31
Author(s):  
N Y Grigorieva ◽  
T P Ilyushina ◽  
E M Yashina
Keyword(s):  
Coronary Artery Disease ◽  
Heart Rate ◽  
Coronary Artery ◽  
Calcium Antagonist ◽  
Beta Blocker ◽  
Ventricular Extrasystoles ◽  
Group 3 ◽  
Group 2 ◽  
Artery Disease ◽  
Group 1

Aim: to compare the antianginal and pulse slowing effects, the impact on the ectopic myocardial activity as well as the safety of the treatment with beta - adrenoblocker bisoprolol, calcium antagonist verapamil and the combination of bisoprolol with amlodipine in patients with stable angina (SA) and bronchial asthma (BA). Materials and methods. The study included 90 patients with SA II-III functional class (FC) having concomitant persistent asthma of moderate severity, controlled, without exacerbation. The patients were divided into three groups with 30 individuals in each one depending on the main antianginal drug prescribed. Group 1 patients received a cardio - selective beta - adrenergic blocker bisoprolol (Concor) at the dose of 5 mg/day, patients of group 2 were treated by a calcium antagonist verapamil at the dose of 240 mg/day, patients of group 3 received combined therapy with bisoprolol at the dose of 5 mg/day and amlodipine at the dose of 5 mg/day given as a fixed combination (Concor AM 5/5). All the patients were investigated by the methods of daily ECG monitoring and respiratory function study (RFS) in addition to physical examination at baseline and after 4 weeks of treatment. Results. After 4 weeks of treatment, patients of group 1 and group 3 did not complain of angina attacks and did not use nitroglycerin unlike patients of group 2. The achieved heart rate (HR) in group 1 patients was 68.6±8.5 beats/min, in group 2 - 74.3±5.6 beats/min, in group 3 - 67.3±4.8 beats/min. A significant decrease in the number of supraventricular and ventricular extrasystoles occurred in patients of group 1 and group 3 only. Thus, the pulse slowing, antianginal, antiischemic and antiarrhythmic effect of the calcium antagonist verapamil, even at the dose of 240 mg/day, is not always sufficient for the patients with SA II-III FC and concomitant BA, unlike therapy with the inclusion of beta - blocker bisoprolol. During the study there was no registered deterioration in the indices of bronchial patency according to the RFS data in the patients of all three groups. Conclusion. In patients with coronary artery disease and concomitant asthma, all three types of pulse slowing therapy do not have any negative effects on bronchial patency. Therapy with the inclusion of beta - blockers (bisoprolol or its combination with amlodipine), in contrast to verapamil, reliably reduces heart rate and the number of supraventricular and ventricular extrasystoles in addition to a good antianginal effect.

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