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Li B, Guo S, Xu H, Zhou Y, Zhang M, Wang J, Chen Y, Chen H, Song J, Tan S. Abnormal circadian rhythm of heart rate variability and their association with symptoms in patients with major depressive disorder. J Affect Disord 2024; 362:14-23. [PMID: 38942206 DOI: 10.1016/j.jad.2024.06.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 06/21/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
BACKGROUND Heart rate variability (HRV) is often reduced in patients with major depressive disorder (MDD) and is linked to symptoms. However, prior studies have mainly focused on short-term HRV, with limited exploration of the 24-h HRV circadian rhythm, despite its ability to comprehensively capture overall HRV distribution and dynamic fluctuations. In this study, we investigated the circadian rhythms of 24-h HRV indices in patients with MDD and their associations with symptom severity. METHODS We recorded 24-h electrocardiograms in 73 patients with MDD (53 in major depressive episode and 20 in remission period) and 31 healthy controls. An extended cosine model was used to model the circadian rhythm of six HRV indices by five parameters: the mesor, amplitude, duty cycle, curve smoothness, and acrophase. Symptom severity was evaluated using the Hamilton Depression Scale and Hamilton Anxiety Scale. RESULTS Compared with the control group, patients with MDD had a significantly smaller SampEn mesor, higher HF duty cycle, and lower heart rate (HR) duty cycle. They also had a significantly higher curve smoothness for HR, RMSSD, and HF. The mesor for SampEn, along with the curve smoothness for HR and ln RMSSD, were associated with certain symptoms in patients with MDD. LIMITATIONS The cross-sectional design and psychiatric treatment of most patients with MDD limited our findings. CONCLUSION Patients with MDD exhibit abnormal HRV circadian rhythms that are associated with symptoms. Moreover, 24-h ECG monitoring may potentially serve as an adjunct value to objectively evaluate clinical symptoms in these patients.
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Affiliation(s)
- Bing Li
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Sheng Guo
- Image Processing Center, Beihang University, Beijing 100191, China
| | - Hao Xu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China; North China University of Science and Technology, Tangshan 063210, China
| | - Yanfang Zhou
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Meng Zhang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Jinghan Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Yan Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Haitao Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Jiaqi Song
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China
| | - Shuping Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing 100096, China.
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2
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Flanders WH, Moïse NS, Otani NF. Use of machine learning and Poincaré density grid in the diagnosis of sinus node dysfunction caused by sinoatrial conduction block in dogs. J Vet Intern Med 2024; 38:1305-1324. [PMID: 38682817 PMCID: PMC11099791 DOI: 10.1111/jvim.17071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 03/27/2024] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND Sinus node dysfunction because of abnormal impulse generation or sinoatrial conduction block causes bradycardia that can be difficult to differentiate from high parasympathetic/low sympathetic modulation (HP/LSM). HYPOTHESIS Beat-to-beat relationships of sinus node dysfunction are quantifiably distinguishable by Poincaré plots, machine learning, and 3-dimensional density grid analysis. Moreover, computer modeling establishes sinoatrial conduction block as a mechanism. ANIMALS Three groups of dogs were studied with a diagnosis of: (1) balanced autonomic modulation (n = 26), (2) HP/LSM (n = 26), and (3) sinus node dysfunction (n = 21). METHODS Heart rate parameters and Poincaré plot data were determined [median (25%-75%)]. Recordings were randomly assigned to training or testing. Supervised machine learning of the training data was evaluated with the testing data. The computer model included impulse rate, exit block probability, and HP/LSM. RESULTS Confusion matrices illustrated the effectiveness in diagnosing by both machine learning and Poincaré density grid. Sinus pauses >2 s differentiated (P < .0001) HP/LSM (2340; 583-3947 s) from sinus node dysfunction (8503; 7078-10 050 s), but average heart rate did not. The shortest linear intervals were longer with sinus node dysfunction (315; 278-323 ms) vs HP/LSM (260; 251-292 ms; P = .008), but the longest linear intervals were shorter with sinus node dysfunction (620; 565-698 ms) vs HP/LSM (843; 799-888 ms; P < .0001). CONCLUSIONS Number and duration of pauses, not heart rate, differentiated sinus node dysfunction from HP/LSM. Machine learning and Poincaré density grid can accurately identify sinus node dysfunction. Computer modeling supports sinoatrial conduction block as a mechanism of sinus node dysfunction.
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Affiliation(s)
- Wyatt Hutson Flanders
- Department of Clinical Sciences, College of Veterinary MedicineCornell UniversityIthacaNew YorkUSA
| | - N. Sydney Moïse
- Section of Cardiology, Department of Clinical Sciences, College of Veterinary MedicineCornell UniversityIthacaNew YorkUSA
| | - Niels F. Otani
- School of Mathematical SciencesRochester Institute of TechnologyRochesterNew YorkUSA
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3
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Andersen JP, Arpaia J, Gustafsberg H, Poplawski S, Di Nota PM. The International Performance, Resilience and Efficiency Program Protocol for the Application of HRV Biofeedback in Applied Law Enforcement Settings. Appl Psychophysiol Biofeedback 2024:10.1007/s10484-024-09644-3. [PMID: 38656642 DOI: 10.1007/s10484-024-09644-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Law enforcement officers are routinely exposed to high-threat encounters that elicit physiological stress responses that impact health, performance, and safety. Therefore, self-regulation using evidence-based approaches is a priority in police research and practice. This paper describes a five-module heart rate variability biofeedback (HRVB) protocol that is part of a larger resilience program (the International Performance Resilience and Efficiency Program - iPREP) established in 2014. Supported by 10 years of user-informed research and development, our methods are tailored to address occupational stressors and the practical realities of training and resource availability in operational settings. Building on existing clinical methods that comprise five to six weekly sessions and up to 40-min of daily practice, our iPREP HRVB protocol is typically delivered in a condensed format across 2-3 days and is seamlessly integrated with reality-based training scenarios commonly employed in policing. By combining best practices in clinical HRVB with police-specific pedagogical frameworks, officers receive accelerated and job-relevant training to adaptively modulate autonomic responses to acute and chronic stress. Efficacy of the iPREP HRVB protocol is supported by several research studies of various methodological designs (i.e., randomized control trial, longitudinal cohort) that demonstrate immediate and sustained improvements in police performance and physiological health outcomes. We conclude with a critical appraisal of the available empirical evidence contrasting common and emerging breathing techniques proposed for use in operational policing contexts. The critical appraisal guide is intended to serve as a resource for law enforcement agencies, governing bodies, and operators when choosing appropriate and effective self-regulation training approaches.
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Affiliation(s)
- Judith P Andersen
- Department of Psychology, University of Toronto Mississauga, Toronto, Mississauga, ON, Canada.
- Affiliated Faculty, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
| | | | | | | | - Paula M Di Nota
- Department of Psychology, University of Toronto Mississauga, Toronto, Mississauga, ON, Canada
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Bokov P, Koehl B, Benzouid C, Verlhac S, Missud F, Benkerrou M, Delclaux C. No Increase in Masked Hypertension Prevalence in Children With Sickle Cell Disease in France. Am J Hypertens 2024; 37:358-365. [PMID: 38323455 DOI: 10.1093/ajh/hpae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/11/2024] [Accepted: 01/26/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND An important prevalence (32%-45%) of masked hypertension has been reported in children with sickle cell disease (SCD). Stroke screening is well established using transcranial Doppler (TCD) ultrasound. The objectives of our proof-of-concept study in childhood SCD were to evaluate the prevalence of hypertension and its relationships with cerebral vasculopathy (TCD velocity) and to further evaluate in a subgroup of children the correlations of cardiovascular autonomic nervous system indices with TCD velocity. METHODS Ambulatory blood pressure measurement (ABPM) and TCD velocity were obtained in children with SCD and in a restricted sample, cardiac sympathovagal balance using heart rate variability analyses, baroreflex sensitivity, and pulse wave velocity were measured. RESULTS In 41 children with SCD (median age 14.0 years, 19 girls, SS/Sβ + thalassemia/SC: 33/2/6), ABPM results showed masked hypertension in 2/41 (5%, 95% confidence interval, 0-11) children, consistent with the prevalence in the general pediatric population, elevated blood pressure (BP) in 4/41 (10%) children, and a lack of a normal nocturnal dip in 19/41 children (46%). Children with increased TCD velocity had lower nocturnal dipping of systolic BP. In the 10 participants with extensive cardiovascular assessment, increased TCD velocity was associated with parasympathetic withdrawal and baroreflex failure. Exaggerated orthostatic pressor response or orthostatic hypertension was observed in 7/10 children that was linked to parasympathetic withdrawal. CONCLUSIONS Autonomic nervous system dysfunction, namely loss of parasympathetic modulation, of SCD contributes to increase TCD velocity but is not associated with an increased prevalence of masked hypertension. CLINICAL TRIALS REGISTRATION NCT04911049.
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Affiliation(s)
- Plamen Bokov
- Paris University, AP-HP, Robert Debré Hospital, Department of Physiology, INSERM NeuroDiderot, Paris, France
| | - Berengere Koehl
- Department of Hematology, Paris University, AP-HP, Robert Debré Hospital, Sickle Cell Disease Center, Hematology Unit, Paris, France
- UMR_S1134, BIGR, INSERM, Institut National de la Transfusion Sanguine, Laboratoire d'Excellence GR-Ex, Paris, France
| | - Chérine Benzouid
- Department of Physiology, AP-HP, Robert Debré Hospital, Paris, France
| | - Suzanne Verlhac
- Department of Pediatric Imaging, AP-HP, Robert Debré Hospital, Paris, France
| | - Florence Missud
- Sickle Cell Disease Center, Hematology Unit, Robert Debré Hospital, AP-HP, Paris, France
- INSERM UMR 1123, ECEVE, Paris, France
| | - Malika Benkerrou
- Sickle Cell Disease Center, Hematology Unit, Robert Debré Hospital, AP-HP, Paris, France
- INSERM UMR 1123, ECEVE, Paris, France
| | - Christophe Delclaux
- Paris University, AP-HP, Robert Debré Hospital, Department of Physiology, INSERM NeuroDiderot, Paris, France
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Rasmussen TK, Borghammer P, Finnerup NB, Jensen TS, Hansen J, Knudsen K, Singer W, Lamotte G, Terkelsen AJ. Functional and 123I-MIBG scintigraphy assessment of cardiac adrenergic dysfunction in diabetes. Auton Neurosci 2024; 252:103155. [PMID: 38354456 DOI: 10.1016/j.autneu.2024.103155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/12/2024] [Accepted: 02/06/2024] [Indexed: 02/16/2024]
Abstract
OBJECTIVES To assess the agreement between clinical cardiovascular adrenergic function and cardiac adrenergic innervation in type 2 diabetes patients (T2D). METHODS Thirty-three patients with T2D were investigated bimodally through (1) a standardized clinical cardiovascular adrenergic assessment, evaluating adequacy of blood pressure responses to the Valsalva maneuver and (2) 123I-meta-iodobenzylguanidine (MIBG) scintigraphy assessing myocardial adrenergic innervation measured as early and delayed heart heart/mediastinum (H/M) ratio, and washout rate (WR). RESULTS T2D patients had significantly lower early and delayed H/M-ratios, and lower WR, compared to laboratory specific reference values. Thirteen patients had an abnormal adrenergic composite autonomic severity score (CASS > 0). Patients with abnormal CASS scores had significantly higher early H/M ratios (1.76 [1.66-1.88] vs. 1.57 [1.49-1.63], p < 0.001), higher delayed H/M ratios (1.64 [1.51:1.73] vs. 1.51 [1.40:1.61] (p = 0.02)), and lower WR (-0.13(0.10) vs -0.05(0.07), p = 0.01). Lower Total Recovery and shorter Pressure Recovery Time responses from the Valsalva maneuver was significantly correlated to lower H/M early (r = 0.55, p = 0.001 and r = 0.5, p = 0.003, respectively) and lower WR for Total Recovery (r = -0.44, p = 0.01). CONCLUSION The present study found impairment of sympathetic innervation in T2D patients based on parameters derived from MIBG cardiac scintigraphy (low early H/M, delayed H/M, and WR). These results confirm prior studies. We found a mechanistically inverted relationship with favourable adrenergic cardiovascular responses being significantly associated unfavourable MIBG indices for H/M early and delayed. This paradoxical relationship needs to be further explored but could indicate adrenergic hypersensitivity in cardiac sympathetic denervated T2D patients.
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Affiliation(s)
- Thorsten K Rasmussen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Denmark.
| | - Per Borghammer
- Department of Nuclear Medicine and PET, Aarhus University Hospital, Denmark
| | - Nanna B Finnerup
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Denmark; Department of Neurology, Aarhus University Hospital, Denmark
| | - Troels S Jensen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Denmark
| | - John Hansen
- Department of Health Science and Technology, Aalborg University, Denmark
| | - Karoline Knudsen
- Department of Nuclear Medicine and PET, Aarhus University Hospital, Denmark
| | | | - Guillaume Lamotte
- Movement Disorders and Autonomic Disorders Clinic, University of Utah, USA
| | - Astrid J Terkelsen
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Denmark; Department of Neurology, Aarhus University Hospital, Denmark
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Kovanur Sampath K, Tumilty S, Wooten L, Belcher S, Farrell G, Gisselman AS. Effectiveness of spinal manipulation in influencing the autonomic nervous system - a systematic review and meta-analysis. J Man Manip Ther 2024; 32:10-27. [PMID: 38044657 PMCID: PMC10795624 DOI: 10.1080/10669817.2023.2285196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 11/13/2023] [Indexed: 12/05/2023] Open
Abstract
BACKGROUND Spinal manipulation (SM) has been hypothesized to influence the autonomic nervous system (ANS). Further, it has been proposed that the effects may vary depending on the segment manipulated. The aim of this systematic review was to synthesize the current level of evidence for SM in influencing the ANS in healthy and/or symptomatic population. METHODS Various databases (n = 8) were searched (inception till May 2023) and 14 trials (n = 618 participants) were included in the review. Two authors independently screened, extracted and assessed the risk of bias in included studies. The data were synthesized using standard mean differences and meta-analysis for the primary outcome measures. The Grading of Recommendations, Assessment, Development and Evaluation (GRADE) was used for assessing the quality of the body of evidence for each outcome of interest. RESULTS Overall, there was low quality evidence that SM did not influence any measure of ANS including heart rate variability (HRV), oxy-hemoglobin, blood pressure, epinephrine and nor-epinephrine. However, there was low quality evidence that cervical spine manipulation may influence high frequency parameter of HRV, indicating its influence on the parasympathetic nervous system. CONCLUSION When compared with control or sham interventions, SM did not alter the ANS. Due to invalid methodologies and the low quality of included studies, findings must be interpreted with great caution. Future studies are needed which employ rigorous data collection processes to verify the true physiological implications of SM on ANS.
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Affiliation(s)
- Kesava Kovanur Sampath
- Centre for Health and Social Practice, Waikato Institute of Technology, Te Pukenga, Hamilton, New Zealand
- Faculty of Health, Bruce ACT, University of Canberra, Australia
| | - Steve Tumilty
- Centre for Health, Activity, and Rehabilitation Research (CHARR), School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Liana Wooten
- Physical Therapy Program – Phoenix, Department of Rehabilitation Sciences, School of Medicine, Tufts University, Phoenix, United States of America
| | - Suzie Belcher
- Centre for Health and Social Practice, Waikato Institute of Technology, Te Pukenga, Hamilton, New Zealand
| | - Gerard Farrell
- Centre for Health, Activity, and Rehabilitation Research (CHARR), School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Angela Spontelli Gisselman
- Physical Therapy Program – Phoenix, Department of Rehabilitation Sciences, School of Medicine, Tufts University, Phoenix, United States of America
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Orini M, van Duijvenboden S, Young WJ, Ramírez J, Jones AR, Hughes AD, Tinker A, Munroe PB, Lambiase PD. Long-term association of ultra-short heart rate variability with cardiovascular events. Sci Rep 2023; 13:18966. [PMID: 37923787 PMCID: PMC10624663 DOI: 10.1038/s41598-023-45988-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/26/2023] [Indexed: 11/06/2023] Open
Abstract
Heart rate variability (HRV) is a cardiac autonomic marker with predictive value in cardiac patients. Ultra-short HRV (usHRV) can be measured at scale using standard and wearable ECGs, but its association with cardiovascular events in the general population is undetermined. We aimed to validate usHRV measured using ≤ 15-s ECGs (using RMSSD, SDSD and PHF indices) and investigate its association with atrial fibrillation, major adverse cardiac events, stroke and mortality in individuals without cardiovascular disease. In the National Survey for Health and Development (n = 1337 participants), agreement between 15-s and 6-min HRV, assessed with correlation analysis and Bland-Altman plots, was very good for RMSSD and SDSD and good for PHF. In the UK Biobank (n = 51,628 participants, 64% male, median age 58), after a median follow-up of 11.5 (11.4-11.7) years, incidence of outcomes ranged between 1.7% and 4.3%. Non-linear Cox regression analysis showed that reduced usHRV from 15-, 10- and 5-s ECGs was associated with all outcomes. Individuals with low usHRV (< 20th percentile) had hazard ratios for outcomes between 1.16 and 1.29, p < 0.05, with respect to the reference group. In conclusion, usHRV from ≤ 15-s ECGs correlates with standard short-term HRV and predicts increased risk of cardiovascular events in a large population-representative cohort.
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Affiliation(s)
- Michele Orini
- Institute of Cardiovascular Science, University College London, 1-19 Torrington Pl, London, WC1E 7HB, UK.
- MRC Unit for Lifelong Health and Ageing at University College London, London, UK.
| | - Stefan van Duijvenboden
- Institute of Cardiovascular Science, University College London, 1-19 Torrington Pl, London, WC1E 7HB, UK
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- Big Data Institute, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - William J Young
- Barts Heart Centre, St Bartholomew's Hospital, London, UK
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Julia Ramírez
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- Aragon Institute of Engineering Research, University of Zaragoza, Zaragoza, Spain
- Centro de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanotecnología, Zaragoza, Spain
| | - Aled R Jones
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Alun D Hughes
- Institute of Cardiovascular Science, University College London, 1-19 Torrington Pl, London, WC1E 7HB, UK
- MRC Unit for Lifelong Health and Ageing at University College London, London, UK
| | - Andrew Tinker
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- NIHR Barts Biomedical Research Centre, Faculty of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Patricia B Munroe
- Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- NIHR Barts Biomedical Research Centre, Faculty of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Pier D Lambiase
- Institute of Cardiovascular Science, University College London, 1-19 Torrington Pl, London, WC1E 7HB, UK
- Barts Heart Centre, St Bartholomew's Hospital, London, UK
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8
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Dimitriev D, Indeykina O, Dimitriev A. The Effect of Auditory Stimulation on the Nonlinear Dynamics of Heart Rate: The Impact of Emotional Valence and Arousal. Noise Health 2023; 25:165-175. [PMID: 37815078 PMCID: PMC10747806 DOI: 10.4103/nah.nah_15_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/01/2023] [Accepted: 05/11/2023] [Indexed: 10/11/2023] Open
Abstract
Background Although it is known that sound exposure evokes changes in autonomic activity, the effects of noise and music on the nonlinear behavior of heart rate fluctuations remain poorly understood and controversial. This study aims to assess the influence of sound subjective emotional valence and arousal on the nonlinear characteristics of the autonomic nervous system during passive listening. Methods In this study, 42 subjects listened to four sounds: (1) white noise, (2) road traffic noise, (3) excitatory music, and (4) a lullaby. The experiment consisted of two consecutive sessions: 5 minutes of rest, followed by 5 minutes of listening. RR intervals were recorded during both sessions. The following linear and nonlinear heart rate variability (HRV) indices were computed: Standard deviation of NN (SDNN), The root mean square of successive differences between normal heartbeats (RMSSD), F, high frequency (HF), approximate entropy (ApEn) and sample entropy (SampEn), correlation dimension (D2), Poincaré plot indices (SD1, SD2), fractal scaling exponents (alpha1, alpha2), and recurrence plot indices (mean line length [Lmean], maximum line length [Lmax], determinism [DET], laminarity [LAM], maximal vertical length [Vmax], trapping time [TT], Shannon entropy of line length distribution [ShanEn]). Results Excitatory music was associated with a significant decrease in SDNN (from 47.3 ± 3.59 to 38.31 ± 3.16, P < 0.01), RMSSD (from 51.07 ± 4.75 to 42.53 ± 3.9, P < 0.05), HF (from 1516.26 ± 245.74 to 884.07 ± 183.44, P < 0.001), and low frequency (LF; from 973.33 ± 176.09 to 760.28 ± 150.35, P < 0.05). Excitatory music exposure induced significant increases in DET (P < 0.01), SD1 (P < 0.05), and SD2 (P < 0.05), but changes in detrended fluctuation analysis (DFA), SampEn, and D2 were nonsignificant. Traffic noise, white noise, and the lullaby did not cause significant changes in the measures of HRV. Conclusion Presentation of excitatory music that evokes strong negative emotions elicits a prominent decrease in respiratory sinus arrhythmia. Poincaré plot and recurrence plot measures possess high sensitivity to excitatory music. Contrary to previous studies, we did not find the effects of relaxing music on HRV.
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Affiliation(s)
- Dmitri Dimitriev
- Department of Biology, Chuvash I. Yakovlev State Pedagogical University, Cheboksary, Chuvashia Republic, Russia
| | - Olga Indeykina
- Department of Biology, Chuvash I. Yakovlev State Pedagogical University, Cheboksary, Chuvashia Republic, Russia
| | - Aleksey Dimitriev
- Cheboksary Cooperative Institute of the Russian University of Cooperation, Cheboksary, Chuvashia Republic, Russia
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9
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Kong SDX, Gordon CJ, Hoyos CM, Wassing R, D’Rozario A, Mowszowski L, Ireland C, Palmer JR, Grunstein RR, Shine JM, McKinnon AC, Naismith SL. Heart rate variability during slow wave sleep is linked to functional connectivity in the central autonomic network. Brain Commun 2023; 5:fcad129. [PMID: 37234683 PMCID: PMC10208252 DOI: 10.1093/braincomms/fcad129] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/20/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Reduced heart rate variability can be an early sign of autonomic dysfunction in neurodegenerative diseases and may be related to brain dysfunction in the central autonomic network. As yet, such autonomic dysfunction has not been examined during sleep-which is an ideal physiological state to study brain-heart interaction as both the central and peripheral nervous systems behave differently compared to during wakefulness. Therefore, the primary aim of the current study was to examine whether heart rate variability during nocturnal sleep, specifically slow wave (deep) sleep, is associated with central autonomic network functional connectivity in older adults 'at-risk' of dementia. Older adults (n = 78; age range = 50-88 years; 64% female) attending a memory clinic for cognitive concerns underwent resting-state functional magnetic resonance imaging and an overnight polysomnography. From these, central autonomic network functional connectivity strength and heart rate variability data during sleep were derived, respectively. High-frequency heart rate variability was extracted to index parasympathetic activity during distinct periods of sleep, including slow wave sleep as well as secondary outcomes of non-rapid eye movement sleep, wake after sleep onset, and rapid eye movement sleep. General linear models were used to examine associations between central autonomic network functional connectivity and high-frequency heart rate variability. Analyses revealed that increased high-frequency heart rate variability during slow wave sleep was associated with stronger functional connectivity (F = 3.98, P = 0.022) in two core brain regions within the central autonomic network, the right anterior insular and posterior midcingulate cortex, as well as stronger functional connectivity (F = 6.21, P = 0.005) between broader central autonomic network brain regions-the right amygdala with three sub-nuclei of the thalamus. There were no significant associations between high-frequency heart rate variability and central autonomic network connectivity during wake after sleep onset or rapid eye movement sleep. These findings show that in older adults 'at-risk' of dementia, parasympathetic regulation during slow wave sleep is uniquely linked to differential functional connectivity within both core and broader central autonomic network brain regions. It is possible that dysfunctional brain-heart interactions manifest primarily during this specific period of sleep known for its role in memory and metabolic clearance. Further studies elucidating the pathophysiology and directionality of this relationship should be conducted to determine if heart rate variability drives neurodegeneration, or if brain degeneration within the central autonomic network promotes aberrant heart rate variability.
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Affiliation(s)
- Shawn D X Kong
- Correspondence to: Shawn Dexiao KongHealthy Brain Ageing ProgramBrain and Mind Centre, University of Sydney100 Mallett St, Camperdown, NSW 2050, Australia E-mail:
| | - Christopher J Gordon
- CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW 2037, Australia
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
| | - Camilla M Hoyos
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050, Australia
- Charles Perkins Centre, University of Sydney, Camperdown, NSW 2050, Australia
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW 2050, Australia
- CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW 2037, Australia
| | - Rick Wassing
- CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW 2037, Australia
| | - Angela D’Rozario
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050, Australia
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW 2050, Australia
- CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW 2037, Australia
| | - Loren Mowszowski
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050, Australia
- Charles Perkins Centre, University of Sydney, Camperdown, NSW 2050, Australia
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW 2050, Australia
| | - Catriona Ireland
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050, Australia
| | - Jake R Palmer
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050, Australia
| | - Ronald R Grunstein
- CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW 2037, Australia
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
- Royal Prince Alfred Hospital, University of Sydney, Camperdown, NSW 2050, Australia
| | - James M Shine
- Royal Prince Alfred Hospital, University of Sydney, Camperdown, NSW 2050, Australia
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10
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Benjamim CJR, Sousa YBA, Porto AA, de Moraes Pontes YM, Tavares SS, da Silva Rodrigues G, da Silva LSL, da Silva Goncalves L, Guimaraes CS, Rebelo MA, da Silva Sobrinho AC, Tanus-Santos JE, Valenti VE, Gualano B, Bueno Júnior CR. Nitrate-rich beet juice intake on cardiovascular performance in response to exercise in postmenopausal women with arterial hypertension: study protocol for a randomized controlled trial. Trials 2023; 24:94. [PMID: 36750904 PMCID: PMC9903428 DOI: 10.1186/s13063-023-07117-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 01/28/2023] [Indexed: 02/09/2023] Open
Abstract
BACKGROUND There is no evidence of the use of beetroot juice with a previously recommended dose of nitrate (NO3) (> 300 mg) on the cardiovascular performance during and recovery following exercise in postmenopausal women with systemic arterial hypertension (SAH). METHODS We will investigate the effects of beetroot juice rich in NO3 acutely (800 mg) and during a week with daily doses (400 mg) on blood pressure, heart rate (HR), cardiac autonomic control, endothelial function, inflammatory, hormonal, and stress biomarkers oxidative stress and enzymes involved in nitric oxide synthesis and mitochondrial regulation, under resting conditions, as well as mediated by submaximal aerobic exercise sessions. Through a randomized, crossover, triple-blind, placebo-controlled clinical trial, 25 physically inactive women with SAH will undergo an acute and 1-week trial, each with two intervention protocols: (1) placebo and (2) beetroot, in which will ingest beet juice with or without NO3 in its composition with a 7-day washout interval. On collection days, exercise will be performed on a treadmill for 40 min at a speed corresponding to 65-70% of VO2peak. The collection of variables (cardiovascular, autonomic, and blood samples for molecular analyses) of the study will take place at rest (135 min after ingestion of the intervention), during exercise (40 min), and in the effort recovery stage (during 60 min) based on previously validated protocols. The collections were arranged so that the measurement of one variable does not interfere with the other and that they have adequate intervals between them. DISCUSSION The results of this research may help in the real understanding of the nutritional compounds capable of generating safety to the cardiovascular system during physical exercise, especially for women who are aging and who have cardiovascular limitations (e.g., arterial hypertension) to perform physical exercise. Therefore, our results will be able to help specific nutritional recommendations to optimize cardiovascular health. TRIAL REGISTRATION ClinicalTrials.gov NCT05384340. Registered on May 20, 2022.
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Affiliation(s)
- Cicero Jonas R. Benjamim
- grid.11899.380000 0004 1937 0722Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Yaritza Brito Alves Sousa
- grid.11899.380000 0004 1937 0722Ribeirao Preto Nursing School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Andrey Alves Porto
- grid.410543.70000 0001 2188 478XMovement Sciences, Autonomic Nervous System Center (CESNA), São Paulo State University (UNESP), Presidente Prudente, SP Brazil
| | - Yasmim Mota de Moraes Pontes
- grid.11899.380000 0004 1937 0722Ribeirao Preto School of Physical Education and Sports, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Simone Sakagute Tavares
- grid.11899.380000 0004 1937 0722Ribeirao Preto School of Physical Education and Sports, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Guilherme da Silva Rodrigues
- grid.11899.380000 0004 1937 0722Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Leonardo Santos Lopes da Silva
- grid.11899.380000 0004 1937 0722Ribeirao Preto School of Physical Education and Sports, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Leonardo da Silva Goncalves
- grid.11899.380000 0004 1937 0722Ribeirao Preto School of Physical Education and Sports, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Carolina Scoqui Guimaraes
- grid.11899.380000 0004 1937 0722Ribeirao Preto Nursing School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Macário Arosti Rebelo
- grid.411087.b0000 0001 0723 2494Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, SP Brazil
| | - Andressa Crystine da Silva Sobrinho
- grid.11899.380000 0004 1937 0722Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Jose E. Tanus-Santos
- grid.11899.380000 0004 1937 0722Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Vitor Engracia Valenti
- grid.410543.70000 0001 2188 478XAutonomic Nervous System Center (CESNA), São Paulo State University (UNESP), Marília, SP Brazil
| | - Bruno Gualano
- grid.11899.380000 0004 1937 0722Applied Physiology & Nutrition Research Group, University of São Paulo, Medical School (FMUSP), São Paulo, SP Brazil
| | - Carlos Roberto Bueno Júnior
- grid.11899.380000 0004 1937 0722Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil ,grid.11899.380000 0004 1937 0722Ribeirao Preto School of Physical Education and Sports, University of São Paulo, Ribeirão Preto, SP Brazil
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11
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Layton R, Layton D, Beggs D, Fisher A, Mansell P, Stanger KJ. The impact of stress and anesthesia on animal models of infectious disease. Front Vet Sci 2023; 10:1086003. [PMID: 36816193 PMCID: PMC9933909 DOI: 10.3389/fvets.2023.1086003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Stress and general anesthesia have an impact on the functional response of the organism due to the detrimental effects on cardiovascular, immunological, and metabolic function, which could limit the organism's response to an infectious event. Animal studies have formed an essential step in understanding and mitigating infectious diseases, as the complexities of physiology and immunity cannot yet be replicated in vivo. Using animals in research continues to come under increasing societal scrutiny, and it is therefore crucial that the welfare of animals used in disease research is optimized to meet both societal expectations and improve scientific outcomes. Everyday management and procedures in animal studies are known to cause stress, which can not only cause poorer welfare outcomes, but also introduces variables in disease studies. Whilst general anesthesia is necessary at times to reduce stress and enhance animal welfare in disease research, evidence of physiological and immunological disruption caused by general anesthesia is increasing. To better understand and quantify the effects of stress and anesthesia on disease study and welfare outcomes, utilizing the most appropriate animal monitoring strategies is imperative. This article aims to analyze recent scientific evidence about the impact of stress and anesthesia as uncontrolled variables, as well as reviewing monitoring strategies and technologies in animal models during infectious diseases.
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Affiliation(s)
- Rachel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia,*Correspondence: Rachel Layton ✉
| | - Daniel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
| | - David Beggs
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Andrew Fisher
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Peter Mansell
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Kelly J. Stanger
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
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12
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Minjoz S, Ottaviani E, Phalempin V, Barathon G, Pellissier S, Hot P. Reducing decision-making deficits in patients with brain injury: effect of slow-paced breathing. APPLIED NEUROPSYCHOLOGY. ADULT 2023:1-10. [PMID: 36645323 DOI: 10.1080/23279095.2023.2166838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Impairments in decision-making have been reported in brain-damaged (stroke/traumatic brain injury) patients with a wide range of lesion sites. Here, we propose that the performances of patients in complex sequential decision-making (DM) tasks can be explained by their negative affectivity, leading to deliberative processing associated with poor DM performances. We assumed that a slow-paced breathing (SPB) training, by reducing negative affectivity would improve performances in a complex DM task. For 24 days, 34 brain-damaged patients (16 males and 18 females; 12 had a hemorrhagic stroke, 17 with an ischemic stroke and 5 with a TBI), practiced either daily SPB or sham trainings for five min, three times a day. Before and after training, we assessed their vagal tone (electrocardiogram-ECG), affectivity (Positive and Negative Affect Schedule-PANAS) and certainty level (Dimensional Ratings Questionnaire-DRQ) and their performance on the Iowa Gambling Task. All participants showed initial weak performance, which improved only for patients in the SPB training condition. These results suggest that DM disorders in brain-damaged patients can be the consequence of their poor information processing strategy rather than an impairment in their DM abilities. Second, we showed that SPB could be efficient to normalize DM processes in brain injury patients.
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Affiliation(s)
- Séphora Minjoz
- Laboratoire de Psychologie et Neurocognition (LPNC), Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS UMR 5105, Grenoble, France
- Laboratoire Interuniversitaire de Psychologie: Personnalité, Cognitions et Changement social (LIP-PC2S), Université Grenoble Alpes, Université Savoie Mont Blanc, Grenoble, France
| | - Elena Ottaviani
- Centre de médecine physique et réadaptation, Domaine Saint Alban, St Alban Leysse, France
| | - Valérian Phalempin
- Centre de médecine physique et réadaptation, Domaine Saint Alban, St Alban Leysse, France
| | - Gilles Barathon
- Centre de médecine physique et réadaptation, Domaine Saint Alban, St Alban Leysse, France
| | - Sonia Pellissier
- Laboratoire Interuniversitaire de Psychologie: Personnalité, Cognitions et Changement social (LIP-PC2S), Université Grenoble Alpes, Université Savoie Mont Blanc, Grenoble, France
| | - Pascal Hot
- Laboratoire de Psychologie et Neurocognition (LPNC), Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS UMR 5105, Grenoble, France
- Institut Universitaire de France, Paris, France
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13
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Gąsior JS, Zamunér AR, Madeyska M, Tomik A, Niszczota C, Williams CA, Werner B. Heart Rate Variability in Individuals with Down Syndrome: A Scoping Review with Methodological Considerations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:941. [PMID: 36673696 PMCID: PMC9859252 DOI: 10.3390/ijerph20020941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/31/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
Individuals with Down syndrome (DS) present similar heart rate variability (HRV) parameters at rest but different responses to selected movement maneuvers in comparison to individuals without DS, which indicates reduced vagal regulation. The present study undertakes a scoping review of research on HRV in individuals with DS, with special attention paid to the compliance of the studies with standards and methodological paper guidelines for HRV assessment and interpretation. A review was performed using PubMed, Web of Science and CINAHL databases to search for English language publications from 1996 to 2020 with the MESH terms "heart rate variability" and "down syndrome", with the additional inclusion criteria of including only human participants and empirical investigations. From 74 studies, 15 were included in the review. None of the reviewed studies met the recommendations laid out by the standards and guidelines for providing the acquisition of RR intervals and necessary details on HRV analysis. Since authors publishing papers on this research topic do not adhere to the prescribed standards and guidelines when constructing the methodology, results of the research papers on the topic are not directly comparable. Authors need to design the study methodology more robustly by following the aforementioned standards, guidelines and recommendations.
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Affiliation(s)
- Jakub S. Gąsior
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland
| | | | - Margaret Madeyska
- Pediatric Cardiology and General Pediatrics Clinic, Jan Polikarp Brudziński Pediatric Hospital, 02-091 Warsaw, Poland
| | - Anna Tomik
- Faculty of Medicine, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Cezary Niszczota
- Pediatric Cardiology and General Pediatrics Clinic, Jan Polikarp Brudziński Pediatric Hospital, 02-091 Warsaw, Poland
| | - Craig A. Williams
- Children’s Health & Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter EX1 2LU, UK
| | - Bożena Werner
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland
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Swart A, Constantinou D. The effects of a 3-day mountain bike cycling race on the autonomic nervous system (ANS) and heart rate variability in amateur cyclists: a prospective quantitative research design. BMC Sports Sci Med Rehabil 2023; 15:2. [PMID: 36593493 PMCID: PMC9808932 DOI: 10.1186/s13102-022-00614-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023]
Abstract
BACKGROUND The acute and chronic adaptation of endurance athletes' hearts shows that increased volume of endurance exercise might cause an acute reduction in cardiac function, causing a physiological cascade that leads to the release of cardiac biomarkers specific to cardiomyocyte stress. Heart rate variability (HRV) is a valuable tool used as a physiological measurement to evaluate the autonomic nervous system (ANS). It is frequently used to assess cardiac autonomic regulation, determining a patient's risk for unfavorable events. This study set out to determine the changes in the ANS by participating in a 3-day mountain bike cycling race in amateur cyclists using HRV as an outcome measure. METHODS Sixteen healthy participants (male and female) participating in a 3-day mountain bike cycling race underwent five-minute resting electrocardiography recordings in a supine position 2 days before the race (baseline testing). In addition, HRV measurements were recorded after each race day and 24 h post-race (recovery). RESULTS Time-domain and frequency-domain measures showed significant changes from baseline HRV parameters after each race day (p ≤ 0.05). In addition, our data revealed that the mean heart rate and R-R variability intervals did not return to baseline values after 24 h of recovery. Thus, autonomic nervous system (ANS) alterations may be due to changes in cardiac sympatho-vagal balance. CONCLUSIONS The main strength of this study is using HRV as a measuring and screening tool to assess cardiac autonomic activity, whereby the state of the ANS before and after endurance races can be measured. Thus, physicians, athletes, and coaches can determine the stress of endurance races on the ANS and plan recovery strategies. The reasoning is that if the ANS is in a state of sub-optimal function, susceptible amateur athletes might be at risk for a cardiovascular event or maladaptation due to the endurance race.
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Affiliation(s)
- Anton Swart
- grid.11951.3d0000 0004 1937 1135Department of Exercise Science and Sports Medicine, Faculty of Health Sciences, University of the Witwatersrand, Impilo Block, 27 St Andrews Road, Parktown, Johannesburg, 2193 South Africa ,Utopia Medi-Spa, 64 Nelson Mandeala Ave., Maerua Mall, PO Box. 97765, Windhoek, Namibia
| | - Demitri Constantinou
- grid.11951.3d0000 0004 1937 1135Department of Exercise Science and Sports Medicine, Faculty of Health Sciences, University of the Witwatersrand, Impilo Block, 27 St Andrews Road, Parktown, Johannesburg, 2193 South Africa
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15
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Saari A, Ma X, Clasey J, Bollinger L, Abel M. Heart rate dynamics during a simulated fireground test: The influence of physical characteristics and fitness1. Work 2023; 76:251-262. [PMID: 36806532 DOI: 10.3233/wor-220216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Firefighting is a physiologically demanding occupation and there is a need to evaluate physical and fitness characteristics that are related to attenuated physiological stress during fireground tasks. Previous studies have not measured associations between heart rate responses during simulated fireground tasks with a standardized work rate. OBJECTIVE The purpose of this study was to examine associations between heart rate during a standardized pace simulated fireground test (SFGT) and heart rate recovery and variability following the SFGT. In addition, this study sought to evaluate associations between heart rate measures versus physical and fitness characteristics in structural firefighter recruits. METHODS Twenty-one fire academy recruits performed a standardized pace SFGT while mean heart rate reserve (HRRes) during the SFGT, change in heart rate variability from rest to post-SFGT (LnRMSSDRest-Post), and 60-second post-SFGT heart rate recovery (HRR60) were measured. Regression analyses were conducted between HRRes, LnRMSSDRest-Post and HRR60 and between heart rate measures versus physical and fitness characteristics while accounting for differences in SFGT completion time. RESULTS HRRes was associated with LnRMSSDRest-Post, but not HRR60. Height and pull-ups explained most of the variance in HRRes, height explained most of the variance in LnRMSSDRest-Post and push-ups and 1.5-mile run explained most of the variance in HRR60. CONCLUSION Greater cardiovascular stress during fireground tasks is associated with greater depression of post-SFGT heart rate variability, but not heart rate recovery. Physical and fitness characteristics are important to consider in relation to firefighters' ability to cope with physical stress on the fireground.
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Affiliation(s)
- Anssi Saari
- Finnish Institute of High Performance Sport KIHU, Jyväskylä, Finland
| | - Xin Ma
- College of Education, University of Kentucky, Lexington, KY, USA
| | - Jody Clasey
- College of Education, University of Kentucky, Lexington, KY, USA
| | - Lance Bollinger
- College of Education, University of Kentucky, Lexington, KY, USA
| | - Mark Abel
- College of Education, University of Kentucky, Lexington, KY, USA
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16
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Electroencephalogram and heart rate variability features as predictors of responsiveness to vagus nerve stimulation in patients with epilepsy: a systematic review. Childs Nerv Syst 2022; 38:2083-2090. [PMID: 36136103 DOI: 10.1007/s00381-022-05653-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/12/2022] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Vagus nerve stimulation (VNS) is a mainstay treatment in people with medically refractive epilepsy with a growing interest to identify biomarkers that are predictive of VNS efficacy. In this review, we looked at electroencephalography (EEG) and heart rate variability (HRV) parameters as potential biomarkers. METHODOLOGY A comprehensive search of several databases limited to the English language and excluding animal studies was conducted. Data was collected from studies that specifically reviewed preoperative EEG and HRV characteristics as predictive factors of VNS outcomes. RESULTS Ten out of 1078 collected studies were included in this review, of which EEG characteristics were reported in seven studies; HRV parameters were reported in two studies, and one study reported both. For EEG, studies reported a lower global rate of synchronization in alpha, delta, and gamma waves as predictors of the VNS response. The P300 wave, an evoked response on EEG, had conflicting results. Two studies reported high P300 wave amplitudes in nonresponders and low amplitudes in responders, whereas another study reported high P300 wave amplitudes in responders. For HRV, one study reported high-frequency power as the only parameter to be significantly lower in responders. In contrast, two studies from the same authors showed that HRV parameters were not different between responders and nonresponders. CONCLUSION HRV parameters and EEG characteristics including focal seizures and P300 wave have been reported as potential biomarkers for VNS outcomes in people with medically refractive epilepsy. However, the contradictory findings imply a need for validation through clinical trials.
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Lin IM, Lin PY, Fan SY. The Effects of Heart Rate Variability (HRV) Biofeedback on HRV Reactivity and Recovery During and After Anger Recall Task for Patients with Coronary Artery Disease. Appl Psychophysiol Biofeedback 2022; 47:131-142. [PMID: 35262874 DOI: 10.1007/s10484-022-09539-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2022] [Indexed: 11/24/2022]
Abstract
Patients with coronary artery disease (CAD) often experience anger events before cardiovascular events. Anger is a psychological risk factor and causes underlying psychophysiological mechanisms to lose balance of the autonomic nervous system (ANS). The heart rate variability (HRV) was the common index for ANS regulation. It has been confirmed that heart rate variability biofeedback (HRV-BF) restored ANS balance in patients with CAD during the resting state. However, the effects of HRV-BF during and after the anger event remain unknown. This study aimed to examine the effects of HRV-BF on ANS reactivity and recovery during the anger recall task in patients with CAD. This study was a randomized control trial with a wait-list control group design, with forty patients in the HRV-BF group (for six sessions) and 44 patients in the control group. All patients received five stages of an anger recall task, including baseline, neutral recall task, neutral recovery, anger recall task, and anger recovery. HRV reactivity in the HRV-BF group at the post-test was lower than that in the control group. HRV recovery at the post-test in the HRV-BF group was higher than that in the control group. The HRV-BF reduced ANS reactivity during anger events and increased ANS recovery after anger events for CAD patients. The possible mechanisms of HRV-BF may increase total HRV, ANS regulation, and baroreflex activation at anger events for patients with CAD, and may be a suitable program for cardiac rehabilitation.
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Affiliation(s)
- I-Mei Lin
- Department of Psychology, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Division of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Pei-Yun Lin
- Department of Psychology, Kaohsiung Medical University, Kaohsiung, Taiwan.,Ministry of Health and Welfare Yuli Hospital, Hualien, Taiwan
| | - Sheng-Yu Fan
- Institute of Gerontology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan City, 701, Taiwan.
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18
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Baranowska I, Gawrys O, Walkowska A, Olszynski KH, Červenka L, Falck JR, Adebesin AM, Imig JD, Kompanowska-Jezierska E. Epoxyeicosatrienoic Acid Analog and 20-HETE Antagonist Combination Prevent Hypertension Development in Spontaneously Hypertensive Rats. Front Pharmacol 2022; 12:798642. [PMID: 35111064 PMCID: PMC8802114 DOI: 10.3389/fphar.2021.798642] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/01/2021] [Indexed: 12/21/2022] Open
Abstract
Numerous studies indicate a significant role for cytochrome P-450-dependent arachidonic acid metabolites in blood pressure regulation, vascular tone, and control of renal function. Epoxyeicosatrienoic acids (EETs) exhibit a spectrum of beneficial effects, such as vasodilatory activity and anti-inflammatory, anti-fibrotic, and anti-apoptotic properties. 20-Hydroxyeicosatetraenoic acid (20-HETE) is a potent vasoconstrictor that inhibits sodium reabsorption in the kidney. In the present study, the efficiency of EET-A (a stable analog of 14,15-EET) alone and combined with AAA, a novel receptor antagonist of 20-HETE, was tested in spontaneously hypertensive rats (SHR). Adult SHR (16 weeks old) were treated with two doses of EET-A (10 or 40 mg/kg/day). In the following experiments, we also tested selected substances in the prevention of hypertension development in young SHR (6 weeks old). Young rats were treated with EET-A or the combination of EET-A and AAA (both at 10 mg/kg/day). The substances were administered in drinking water for 4 weeks. Blood pressure was measured by telemetry. Once-a-week observation in metabolic cages was performed; urine, blood, and tissue samples were collected for further analysis. The combined treatment with AAA + EET-A exhibited antihypertensive efficiency in young SHR, which remained normotensive until the end of the observation in comparison to a control group (systolic blood pressure, 134 ± 2 versus 156 ± 5 mmHg, respectively; p < 0.05). Moreover the combined treatment also increased the nitric oxide metabolite excretion. Considering the beneficial impact of the combined treatment with EET-A and AAA in young rats and our previous positive results in adult SHR, we suggest that it is a promising therapeutic strategy not only for the treatment but also for the prevention of hypertension.
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Affiliation(s)
- Iwona Baranowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland.,Department of Immunology, Medical University of Warsaw, Warsaw, Poland
| | - Olga Gawrys
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland.,Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Krzysztof H Olszynski
- Behavior and Metabolism Research Laboratory, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Adeniyi M Adebesin
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - John D Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
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Yoshida M. Recording the ventilation activity of free-swimming zebrafish and its application to novel tank tests. Physiol Behav 2022; 244:113665. [PMID: 34871650 DOI: 10.1016/j.physbeh.2021.113665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/04/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022]
Abstract
Bioelectric signals related to ventilatory movements in fish can be detected via externally located electrodes. In this study, a technique to continuously monitor the electric ventilatory signals in free-swimming zebrafish was developed. This technique was applied to monitoring ventilation activity as a physiological measure in conjunction with various behavioral measures in a novel tank environment. It was found that in addition to ventilation rate, time domain analysis of changes in ventilation rate is useful for evaluating the emotional state of zebrafish. By integrating the physiological and behavioral measures in analyses, a 1 h novel tank test trial revealed that the habituation process involves two phases. The first phase, which lasted 10 min, involved rapid attenuation of the initial fear/anxiety response to encountering a novel environment. The second phase lasted 20 min and involved further attenuation of anxiety and an increase in exploration behavior. These data suggest that combining ventilation-related physiological measures with conventional behavioral measures enables multidimensional examination of the habituation process in a novel tank environment with more precision than is possible when relying on behavioral responses alone.
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Affiliation(s)
- Masayuki Yoshida
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashihiroshima 739-8528, Japan.
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20
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Swift HT, O'Driscoll JM, Coleman DD, Caux AD, Wiles JD. Acute cardiac autonomic and haemodynamic responses to leg and arm isometric exercise. Eur J Appl Physiol 2022; 122:975-985. [PMID: 35089384 DOI: 10.1007/s00421-022-04894-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/13/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Acute cardiovascular responses following a single session of isometric exercise (IE) have been shown to predict chronic adaptations in blood pressure (BP) regulation. It was hypothesised that exercises which recruit more muscle mass induce greater reductions in BP compared to exercises using smaller muscle mass. To test this hypothesis, the current study aimed to compare the acute haemodynamic and autonomic responses to a single session of isometric wall squat (IWS) and isometric handgrip (IHG) training. METHODS Twenty-six sedentary participants performed a single IWS and IHG session in a randomised cross-over design, with training composed of 4 × 2-min contractions, with 2-min rest, at 95 HRpeak and 30% MVC respectively. Haemodynamic and cardiac autonomic variables were recorded pre, during, immediately post, and 1-h post-exercise, with the change from baseline for each variable used for comparative analysis. RESULTS During IWS exercise, there was a significantly greater increase in systolic BP (P < 0.001), diastolic BP (P < 0.001), mean BP (P < 0.001), heart rate (P < 0.001), and cardiac output (P < 0.001), and a contrasting decrease in baroreflex effectiveness index (BEI) and cardiac baroreceptor sensitivity (cBRS). In the 10-min recovery period following IWS exercise, there was a significantly greater reduction in systolic BP (P = 0.005), diastolic BP (P = 0.006), mean BP (P = 0.003), total peripheral resistance (TPR) (P < 0.001), BEI (P = 0.003), and power spectral density (PSD-RRI) (P < 0.001). There were no differences in any variables between conditions 1-h post exercise. CONCLUSIONS Isometric wall squat exercise involving larger muscle mass is associated with a significantly greater post-exercise hypotensive response during a 10-min recovery window compared to smaller muscle mass IHG exercise. The significantly greater reduction in TPR may be an important mechanism for the differences in BP response.
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Affiliation(s)
- Harry T Swift
- School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, CT1 1QU, UK
| | - Jamie M O'Driscoll
- School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, CT1 1QU, UK
| | - Damian D Coleman
- School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, CT1 1QU, UK
| | - Anthony De Caux
- School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, CT1 1QU, UK
| | - Jonathan D Wiles
- School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, CT1 1QU, UK.
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21
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Lin IM, Wu YC, Su WS, Ke CLK, Lin PY, Huang MF, Yeh YC, Wu KT, Yen CF, Ko CH, Fan SY. Cardiac Autonomic and Cardiac Vagal Control During and After Depressive and Happiness Autobiographical Memories in Patients With Major Depressive Disorder. Front Psychiatry 2022; 13:878285. [PMID: 35722587 PMCID: PMC9201501 DOI: 10.3389/fpsyt.2022.878285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Heart rate variability (HRV) and respiratory sinus arrhythmia (RSA) are indices of cardiac autonomic and cardiac vagal control (CVC), both of which are markers of emotional regulation and physical health. This study examined (1) the differences in cardiac autonomic regulation and CVC during baseline, depressive, and happiness autobiographical memory tasks between participants with major depressive disorder (MDD group) and healthy controls (HC group); (2) the associations between depressive symptoms and cardiac autonomic and CVC; and (3) the reactivity and recovery of cardiac autonomic and CVC between the MDD and HC groups. METHODS A total of 168 and 178 participants were included in the MDD and HC groups, respectively. Demographic data and the Beck Depression Inventory-II were collected before the experimental procedure. Lead II electrocardiograph (ECG) was measured during baseline, depressive, and happiness autobiographical memory tasks, and then interbeat intervals from ECG were converted to the time and frequency domains of HRV and RSA. RESULTS The participants in the MDD group showed lower HRV (including standard deviation of normal to normal intervals, low frequency, the natural logarithm of low frequency, and the natural logarithm of high frequency) and CVC (RSA and lnRSA) than those in the HC group. Depressive symptoms were positively correlated with heart rate and negatively correlated with the indices of cardiac autonomic and CVC. There was significantly increased reactivity and recovery of cardiac autonomic and CVC during and after depressive and happiness autobiographical memory tasks in the HC group, but not in the MDD group. DISCUSSION Participants with MDD had cardiac autonomic and CVC dysregulation, decreased reactivity, and did not recover to baseline after emotional provocations. These results can be the theoretical basis for clinical intervention by using HRV biofeedback to restore cardiac autonomic regulation and CVC during and after emotional events in the future.
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Affiliation(s)
- I-Mei Lin
- Department of Psychology, College of Humanities and Social Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yin-Chen Wu
- Department of Psychology, College of Humanities and Social Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-So Su
- Department of Psychology, College of Humanities and Social Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chiao-Li Khale Ke
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, Kaohsiung Municipal SiaoGang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Yun Lin
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, Kaohsiung Municipal SiaoGang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Mei-Feng Huang
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Chun Yeh
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kuan-Ta Wu
- Health Management Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Fang Yen
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Hung Ko
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Psychiatry, Kaohsiung Municipal SiaoGang Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Sheng-Yu Fan
- Institute of Gerontology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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22
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Roura S, Álvarez G, Solà I, Cerritelli F. Do manual therapies have a specific autonomic effect? An overview of systematic reviews. PLoS One 2021; 16:e0260642. [PMID: 34855830 PMCID: PMC8638932 DOI: 10.1371/journal.pone.0260642] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/12/2021] [Indexed: 12/15/2022] Open
Abstract
Background The impact of manual therapy interventions on the autonomic nervous system have been largely assessed, but with heterogeneous findings regarding the direction of these effects. We conducted an overview of systematic reviews to describe if there is a specific autonomic effect elicited by manual therapy interventions, its relation with the type of technique used and the body region where the intervention was applied. Methods We conducted an overview according to a publicly registered protocol. We searched the Cochrane Database of Systematic Reviews, MEDLINE, EPISTEMONIKOS and SCOPUS, from their inception to march 2021. We included systematic reviews for which the primary aim of the intervention was to assess the autonomic effect elicited by a manual therapy intervention in either healthy or symptomatic individuals. Two authors independently applied the selection criteria, assessed risk of bias from the included reviews and extracted data. An established model of generalisation guided the data analysis and interpretation. Results We included 12 reviews (5 rated as low risk of bias according the ROBIS tool). The findings showed that manual therapies may have an effect on both sympathetic and parasympathetic systems. However, the results from included reviews were inconsistent due to differences in their methodological rigour and how the effects were measured. The reviews with a lower risk of bias could not discriminate the effects depending on the body region to which the technique was applied. Conclusion The magnitude of the specific autonomic effect elicited by manual therapies and its clinical relevance is uncertain. We point out some specific recommendations in order to improve the quality and relevance of future research in this field.
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Affiliation(s)
- Sonia Roura
- Spain National Center, Foundation COME Collaboration, Barcelona, Spain
- * E-mail:
| | - Gerard Álvarez
- Spain National Center, Foundation COME Collaboration, Barcelona, Spain
- Iberoamerican Cochrane Centre–Biomedical Research Institute Sant Pau, IIB Sant Pau, Barcelona, Spain
| | - Ivan Solà
- Iberoamerican Cochrane Centre–Biomedical Research Institute Sant Pau, IIB Sant Pau, Barcelona, Spain
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23
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Széles JC, Kampusch S, Thürk F, Clodi C, Thomas N, Fichtenbauer S, Schwanzer C, Schwarzenberger S, Neumayer C, Kaniusas E. Bursted auricular vagus nerve stimulation alters heart rate variability in healthy subjects. Physiol Meas 2021; 42. [PMID: 34496357 DOI: 10.1088/1361-6579/ac24e6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 09/08/2021] [Indexed: 12/18/2022]
Abstract
Objective.Recent research suggests that percutaneous auricular vagus nerve stimulation (pVNS) beneficially modulates the autonomic nervous system (ANS). Bursted pVNS seems to be efficient for nerve excitation. Bursted pVNS effects on cardiac autonomic modulation are not disclosed yet.Approach.For the first time, the present study evaluates the effect of pVNS on cardiac autonomic modulation in healthy subjects (n = 9) using two distinct bursted stimulation patterns (biphasic and triphasic stimulation) and heart rate variability analysis (HRV). Stimulation was delivered via four needle electrodes in vagally innervated regions of the right auricle. Each of the two bursted stimulation patterns was applied twice in randomized order over four consecutive stimulation sessions per subject.Main results.Bursted pVNS did not change heart rate, blood pressure, and inflammatory parameters in study subjects. pVNS significantly increased the standard deviation of heart inter-beat intervals, from 46.39 ± 10.4 ms to 63.46 ± 22.47 ms (p < 0.05), and the total power of HRV, from 1475.7 ± 616.13 ms2to 3190.5 ± 2037.0 ms2(p < 0.05). The high frequency (HF) power, the low frequency (LF) power, and theLF/HFratio did not change during bursted pVNS. Both stimulation patterns did not show any significant differences in cardiac autonomic modulation. Stimulation intensity to reach a tingling sensation was significantly lower in triphasic compared to biphasic stimulation (p< 0.05). Bursted stimulation was well tolerated.Significance.Bursted pVNS seems to affect cardiac autonomic modulation in healthy subjects, with no difference between biphasic and triphasic stimulation, the latter requiring lower stimulation intensities. These findings foster implementation of more efficient pVNS stimulation.
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Affiliation(s)
- Jozsef C Széles
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan Kampusch
- SzeleSTIM GmbH, Vienna, Austria.,Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Vienna, Austria
| | - Florian Thürk
- Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Vienna, Austria
| | - Christian Clodi
- Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria
| | - Norbert Thomas
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, Vienna, Austria
| | - Severin Fichtenbauer
- Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Vienna, Austria
| | - Christian Schwanzer
- Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Vienna, Austria
| | | | - Christoph Neumayer
- Department of General Surgery, Division of Vascular Surgery, Medical University of Vienna, Vienna, Austria
| | - Eugenijus Kaniusas
- Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Vienna, Austria
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24
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Slow deep breathing modulates cardiac vagal activity but does not affect peripheral glucose metabolism in healthy men. Sci Rep 2021; 11:20306. [PMID: 34645853 PMCID: PMC8514507 DOI: 10.1038/s41598-021-99183-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/23/2021] [Indexed: 12/11/2022] Open
Abstract
Parasympathetic nervous system innervates peripheral organs including pancreas, hepatic portal system, and gastrointestinal tract. It thereby contributes to the regulation of whole-body glucose metabolism especially in the postprandial state when it promotes secretion of insulin and enhances its action in major target organs. We now aimed to evaluate the effect of parasympathetic modulation on human glucose metabolism. We used slow deep breathing maneuvers to activate the parasympathetic nervous system and tested for effects on metabolism during an oral glucose tolerance test in a randomized, controlled, cross-over trial in 15 healthy young men. We used projections towards the heart as a readout for parasympathetic activity. When analyzing heart rate variability, there was a significant increase of RMSSD (root mean square of successive differences) when participants performed slow deep breathing compared to the control condition, indicating a modulation of parasympathetic activity. However, no statistically significant effects on peripheral glucose metabolism or energy expenditure after the glucose tolerance test were detected. Of note, we detected a significant association between mean heart rate and serum insulin and C-peptide concentrations. While we did not find major effects of slow deep breathing on glucose metabolism, our correlational results suggest a link between the autonomic nervous system and insulin secretion after oral glucose intake. Future studies need to unravel involved mechanisms and develop potential novel treatment approaches for impaired insulin secretion in diabetes.
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25
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Lange A, Waiblinger S, van Hasselt R, Mundry R, Futschik A, Lürzel S. Effects of restraint on heifers during gentle human-animal interactions. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Lorenz TK. Autonomic, endocrine, and psychological stress responses to different forms of blood draw. PLoS One 2021; 16:e0257110. [PMID: 34478481 PMCID: PMC8415584 DOI: 10.1371/journal.pone.0257110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/23/2021] [Indexed: 12/04/2022] Open
Abstract
Background Although fingerstick is often favorably compared to venipuncture as a less invasive method of drawing blood for clinical labs, there is little empirical research that compares physical and psychological stress responses to fingerstick vs. venipuncture (blood draw using a needle in the arm) within the same person. Methods and findings We assessed changes in cortisol (a stress hormone), heart rate variability (a marker of autonomic stress), and psychological stress in 40 healthy women who completed both venipuncture and fingerstick. Contrary to our predictions, there was a significant decline in cortisol across conditions, with greater decline from pre- to post-draw in response to venipuncture than fingerstick. There were similar patterns of rise and fall in heart rate variability in both types of blood draw, suggestive of mild vasovagal responses. Psychological measures of stress (such as negative emotion and perceived stress) were generally stronger predictors of participant’s reported pain and blood draw preferences than physical stress measures. Conclusions These findings challenge the characterization of fingerstick as necessarily “less invasive” than venipuncture, as participant’s stress responses to fingerstick were equivalent to (and for some measures greater than) their response to venipuncture. Heart rate variability response to fingerstick significantly predicted that individual’s vasovagal-like responses to venipuncture, suggesting that measuring heart rate variability during pre-donation hemoglobin testing may identify donors at risk for adverse events during venipuncture.
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Affiliation(s)
- Tierney K. Lorenz
- Department of Psychology and Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, NE, United States of America
- * E-mail:
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27
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Dorey TW, Jansen HJ, Moghtadaei M, Jamieson KL, Rose RA. Impacts of frailty on heart rate variability in aging mice: Roles of the autonomic nervous system and sinoatrial node. Heart Rhythm 2021; 18:1999-2008. [PMID: 34371195 DOI: 10.1016/j.hrthm.2021.07.069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Heart rate variability (HRV) is determined by intrinsic sinoatrial node (SAN) activity and the autonomic nervous system (ANS). HRV is reduced in aging; however, aging is heterogeneous. Frailty, which can be measured using a frailty index (FI), can quantify health status in aging separately from chronological age. OBJECTIVE The purpose of this study was to investigate the impacts of age and frailty on HRV in mice. METHODS Frailty was measured in aging mice between 10 and 130 weeks of age. HRV was assessed using time domain, frequency domain, and Poincaré plot analyses in anesthetized mice at baseline and after ANS blockade, as well as in isolated atrial preparations. RESULTS HRV was reduced in aged mice (90-130 weeks and 50-80 weeks old) compared to younger mice (10-30 weeks old); however, there was substantial variability within age groups. In contrast, HRV was strongly correlated with FI score regardless of chronological age. ANS blockade resulted in reductions in heart rate that were largest in 90- to 130-week-old mice and were correlated with FI score. HRV after ANS blockade or in isolated atrial preparations was increased in aged mice but again showed high variability among age groups. HRV was correlated with FI score after ANS blockade and in isolated atrial preparations. CONCLUSION HRV is reduced in aging mice in association with a shift in sympathovagal balance and increased intrinsic SAN beating variability; however, HRV is highly variable within age groups. HRV was strongly correlated with frailty, which was able to detect differences in HRV separately from chronological age.
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Affiliation(s)
- Tristan W Dorey
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Hailey J Jansen
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Motahareh Moghtadaei
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - K Lockhart Jamieson
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robert A Rose
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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28
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Hanzelka M, Dan J, Szabó Z, Roubal Z, Dohnal P, Kadlec R. Methods and Experiments for Sensing Variations in Solar Activity and Defining Their Impact on Heart Variability. SENSORS 2021; 21:s21144817. [PMID: 34300557 PMCID: PMC8309774 DOI: 10.3390/s21144817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/08/2021] [Accepted: 07/10/2021] [Indexed: 11/16/2022]
Abstract
This paper evaluates variations in solar activity and their impact on the human nervous system, including the manner in which human behavior and decision-making reflect such effects in the context of (symmetrical) social interactions. The relevant research showed that solar activity, manifesting itself through the exposure of the Earth to charged particles from the Sun, affects heart variability. The evaluation methods focused on examining the relationships between selected psychophysiological data and solar activity, which generally causes major alterations in the low-level electromagnetic field. The investigation within this paper revealed that low-level EMF changes are among the factors affecting heart rate variability and, thus, also variations at the spectral level of the rate, in the VLF, (f = 0.01-0.04 Hz), LF (f = 0.04-0.15 Hz), and HF (f = 0.15 až 0.40 Hz) bands. The results of the presented experiments can also be interpreted as an indirect explanation of sudden deaths and heart failures.
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Affiliation(s)
- Michael Hanzelka
- Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic; (Z.S.); (Z.R.); (P.D.); (R.K.)
- Correspondence: ; Tel.: +420-54114-6280
| | - Jiří Dan
- Department of Psychology, Faculty of Arts and Letter, Catholic University in Ružomberok, 034 01 Ružomberok, Slovakia;
| | - Zoltán Szabó
- Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic; (Z.S.); (Z.R.); (P.D.); (R.K.)
| | - Zdeněk Roubal
- Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic; (Z.S.); (Z.R.); (P.D.); (R.K.)
| | - Přemysl Dohnal
- Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic; (Z.S.); (Z.R.); (P.D.); (R.K.)
| | - Radim Kadlec
- Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic; (Z.S.); (Z.R.); (P.D.); (R.K.)
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Scavone G, Baril AA, Montplaisir J, Carrier J, Desautels A, Zadra A. Autonomic Modulation During Baseline and Recovery Sleep in Adult Sleepwalkers. Front Neurol 2021; 12:680596. [PMID: 34248823 PMCID: PMC8263899 DOI: 10.3389/fneur.2021.680596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/24/2021] [Indexed: 11/13/2022] Open
Abstract
Sleepwalking has been conceptualized as deregulation between slow-wave sleep and arousal, with its occurrence in predisposed patients increasing following sleep deprivation. Recent evidence showed autonomic changes before arousals and somnambulistic episodes, suggesting that autonomic dysfunctions may contribute to the pathophysiology of sleepwalking. We investigated cardiac autonomic modulation during slow-wave sleep in sleepwalkers and controls during normal and recovery sleep following sleep deprivation. Fourteen adult sleepwalkers (5M; 28.1 ± 5.8 years) and 14 sex- and age-matched normal controls were evaluated by video-polysomnography for one baseline night and during recovery sleep following 25 h of sleep deprivation. Autonomic modulation was investigated with heart rate variability during participants' slow-wave sleep in their first and second sleep cycles. 5-min electrocardiographic segments from slow-wave sleep were analyzed to investigate low-frequency (LF) and high-frequency (HF) components of heart rate spectral decomposition. Group (sleepwalkers, controls) X condition (baseline, recovery) ANOVAs were performed to compare LF and HF in absolute and normalized units (nLF and nHF), and LF/HF ratio. When compared to controls, sleepwalkers' recovery slow-wave sleep showed lower LF/HF ratio and higher nHF during the first sleep cycle. In fact, compared to baseline recordings, sleepwalkers, but not controls, showed a significant decrease in nLF and LF/HF ratio as well as increased nHF during recovery slow-wave sleep during the first cycle. Although non-significant, similar findings with medium effect sizes were observed for absolute values (LF, HF). Patterns of autonomic modulation during sleepwalkers' recovery slow-wave sleep suggest parasympathetic dominance as compared to baseline sleep values and to controls. This parasympathetic predominance may be a marker of abnormal neural mechanisms underlying, or interfere with, the arousal processes and contribute to the pathophysiology of sleepwalking.
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Affiliation(s)
- Geneviève Scavone
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,Department of Psychology, Université de Montréal, Montréal, QC, Canada
| | - Andrée-Ann Baril
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,The Framingham Heart Study, Boston University School of Medicine, Boston, MA, United States
| | - Jacques Montplaisir
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,Deparment of Psychiatry, Université de Montréal, Montréal, QC, Canada
| | - Julie Carrier
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,Department of Psychology, Université de Montréal, Montréal, QC, Canada
| | - Alex Desautels
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,Department of Neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Antonio Zadra
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur Montréal, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Île-de-Montréal (CIUSSS-NIM), Montreal, QC, Canada.,Department of Psychology, Université de Montréal, Montréal, QC, Canada
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Exploring Heart Rate Variability as a Biomedical Diagnostic Tool for the Disympathetic Dimension of Eight-Constitution Medicine. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6613798. [PMID: 34221081 PMCID: PMC8221872 DOI: 10.1155/2021/6613798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/26/2020] [Accepted: 05/31/2021] [Indexed: 11/17/2022]
Abstract
Background Eight-Constitution Medicine (ECM), an extension of Traditional Korean Medicine, divides the population into eight groups based on their physiological characteristics. ECM divides these eight groups into two larger groups based on autonomic reactivity: the Sympathicotonic group and the Vagotonic group (herein referred to as the Disympathetic Dimension). Heart Rate Variability (HRV) is a widely used biomedical tool to assess cardiac autonomic function. This raises the question of the utility of using HRV to correctly diagnose ECM constitutions. Methods A systematic literature review was conducted to evaluate the correlation between HRV and constitutions in Korean Constitutional Medicine, including Eight-Constitution Medicine (ECM) and Sasang Constitution Medicine (SCM). The articles were obtained from both English (Scopus, PubMed, EMBASE, ProQuest, and Medline) and Korean databases (NDSL and RISS), in addition to Google Scholar, without date restriction. 20 studies met the inclusion criteria, and data were extracted against three aspects: (1) correlation between HRV and constitution, (2) HRV reporting and interpretation, and (3) extraneous factors that were controlled in the studies. Results 386 articles were initially identified, which was reduced to n = 20 studies which met the inclusion criteria. Of these, 19 were SCM studies and 1 was an ECM study. Sample sizes varied from 10 to 8498 men and women, with an age range of 10-80 years. SCM studies explored HRV differences by constitution, measuring HRV at resting, with controlled breathing, before and after acupuncture stimulation, and by other interventions. SCM studies reported either no significant differences (HRV at resting or with controlled breathing studies) or conflicting data (HRV with acupuncture stimulation studies). The single ECM study measured HRV at resting and after acupuncture stimulation but reported no significant differences between the two groups of Sympathicotonia and Vagotonia. Conclusions Due to inconsistencies in study design, study population, and measures of HRV, there was no consistency in the data to support the use of HRV as a biomedical determinant of ECM constitutions.
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Kong SDX, Hoyos CM, Phillips CL, McKinnon AC, Lin P, Duffy SL, Mowszowski L, LaMonica HM, Grunstein RR, Naismith SL, Gordon CJ. Altered heart rate variability during sleep in mild cognitive impairment. Sleep 2021; 44:5988607. [PMID: 33306103 DOI: 10.1093/sleep/zsaa232] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 08/31/2020] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES Cardiovascular autonomic dysfunction, as measured by short-term diurnal heart rate variability (HRV), has been reported in older adults with mild cognitive impairment (MCI). However, it is unclear whether this impairment also exists during sleep in this group. We, therefore, compared overnight HRV during sleep in older adults with MCI and those with subjective cognitive impairment (SCI). METHODS Older adults (n = 210) underwent overnight polysomnography. Eligible participants were characterized as multi-domain MCI or SCI. The multi-domain MCI group was comprised of amnestic and non-amnestic subtypes. Power spectral analysis of HRV was conducted on the overnight electrocardiogram during non-rapid eye movement (NREM), rapid eye movement (REM), N1, N2, N3 sleep stages, and wake periods. High-frequency HRV (HF-HRV) was employed as the primary measure to estimate parasympathetic function. RESULTS The MCI group showed reduced HF-HRV during NREM sleep (p = 0.018), but not during wake or REM sleep (p > 0.05) compared to the SCI group. Participants with aMCI compared to SCI had the most pronounced reduction in HF-HRV across all NREM sleep stages-N1, N2, and N3, but not during wake or REM sleep. The naMCI sub-group did not show any significant differences in HF-HRV during any sleep stage compared to SCI. CONCLUSIONS Our study showed that amnestic MCI participants had greater reductions in HF-HRV during NREM sleep, relative to those with SCI, suggesting potential vulnerability to sleep-related parasympathetic dysfunction. HF-HRV, especially during NREM sleep, may be an early biomarker for dementia detection.
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Affiliation(s)
- Shawn D X Kong
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia
| | - Camilla M Hoyos
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia.,CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia
| | - Craig L Phillips
- CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia.,CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia.,Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney, Australia
| | - Andrew C McKinnon
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia
| | - Pinghsiu Lin
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia
| | - Shantel L Duffy
- Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia
| | - Loren Mowszowski
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia
| | - Haley M LaMonica
- Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia
| | - Ronald R Grunstein
- CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia.,CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia.,Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Sharon L Naismith
- School of Psychology, Faculty of Science, University of Sydney, Camperdown, NSW, Australia.,Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia.,Healthy Brain Ageing Program, Brain and Mind Centre, University of Sydney, Camperdown, NSW, Australia.,CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia
| | - Christopher J Gordon
- CogSleep, Australian National Health and Medical Research Council Centre of Research Excellence, Australia.,CIRUS, Centre for Sleep and Chronobiology, Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia.,Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia
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Polichnowski AJ, Williamson GA, Blair TE, Hoover DB. Autonomic and cholinergic mechanisms mediating cardiovascular and temperature effects of donepezil in conscious mice. Am J Physiol Regul Integr Comp Physiol 2021; 320:R871-R884. [PMID: 33851543 DOI: 10.1152/ajpregu.00360.2019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Donepezil is a centrally acting acetylcholinesterase (AChE) inhibitor with therapeutic potential in inflammatory diseases; however, the underlying autonomic and cholinergic mechanisms remain unclear. Here, we assessed effects of donepezil on mean arterial pressure (MAP), heart rate (HR), HR variability, and body temperature in conscious adult male C57BL/6 mice to investigate the autonomic pathways involved. Central versus peripheral cholinergic effects of donepezil were assessed using pharmacological approaches including comparison with the peripherally acting AChE inhibitor, neostigmine. Drug treatments included donepezil (2.5 or 5 mg/kg sc), neostigmine methyl sulfate (80 or 240 μg/kg ip), atropine sulfate (5 mg/kg ip), atropine methyl bromide (5 mg/kg ip), or saline. Donepezil, at 2.5 and 5 mg/kg, decreased HR by 36 ± 4% and 44 ± 3% compared with saline (n = 10, P < 0.001). Donepezil, at 2.5 and 5 mg/kg, decreased temperature by 13 ± 2% and 22 ± 2% compared with saline (n = 6, P < 0.001). Modest (P < 0.001) increases in MAP were observed with donepezil after peak bradycardia occurred. Atropine sulfate and atropine methyl bromide blocked bradycardic responses to donepezil, but only atropine sulfate attenuated hypothermia. The pressor response to donepezil was similar in mice coadministered atropine sulfate; however, coadministration of atropine methyl bromide potentiated the increase in MAP. Neostigmine did not alter HR or temperature, but did result in early increases in MAP. Despite the marked bradycardia, donepezil did not increase normalized high-frequency HR variability. We conclude that donepezil causes marked bradycardia and hypothermia in conscious mice via the activation of muscarinic receptors while concurrently increasing MAP via autonomic and cholinergic pathways that remain to be elucidated.
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Affiliation(s)
- Aaron J Polichnowski
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee.,Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, Tennessee
| | - Geoffrey A Williamson
- Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, Illinois
| | - Tesha E Blair
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Donald B Hoover
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee.,Center of Excellence in Inflammation, Infectious Disease and Immunity, East Tennessee State University, Johnson City, Tennessee
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Gąsior JS, Hoffmann B, Silva LEV, Małek Ł, Flatt AA, Baranowski R, Werner B. Changes in Short-Term and Ultra-Short Term Heart Rate, Respiratory Rate, and Time-Domain Heart Rate Variability Parameters during Sympathetic Nervous System Activity Stimulation in Elite Modern Pentathlonists-A Pilot Study. Diagnostics (Basel) 2020; 10:diagnostics10121104. [PMID: 33348572 PMCID: PMC7766436 DOI: 10.3390/diagnostics10121104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022] Open
Abstract
Monitoring of markers reflecting cardiac autonomic activity before and during stressful situations may be useful for identifying the physiological state of an athlete and may have medical or performance implications. The study aimed to determine group and individual changes in short-term (5 min) and ultra-short-term (1 min) heart rate (HR), respiratory rate (RespRate), and time-domain heart rate variability (HRV) parameters during sympathetic nervous system activity (SNSa) stimulation among professional endurance athletes. Electrocardiographic recordings were performed in stable measurement conditions (Baseline) and during SNSa stimulation via isometric handgrip in 12 elite modern pentathlonists. Significant increases in short-term HR and decreases in time-domain HRV parameters with no changes in RespRate were observed during SNSa stimulation. Significant differences were observed between Baseline (all minutes) and the last (i.e., 5th) minute of SNSa stimulation for ultra-short-term parameters. Analysis of intra-individual changes revealed some heterogeneity in responses. The study provides baseline responses of HR, RespRate, and time-domain HRV parameters to SNSa stimulation among elite pentathlonists, which may be useful for identifying abnormal responses among fatigued or injured (e.g., concussed) athletes. More attention to individual analysis seems to be necessary when assessing physiological responses to sympathetic stimuli in professional endurance athletes.
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Affiliation(s)
- Jakub S. Gąsior
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland;
- Correspondence: or ; Tel.: +48-793-199-222
| | - Bartosz Hoffmann
- Physiotherapy Division, Faculty of Medical Sciences, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Luiz Eduardo Virgilio Silva
- Department of Internal Medicine of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil;
| | - Łukasz Małek
- Department of Epidemiology, Cardiovascular Disease Prevention and Health Promotion, National Institute of Cardiology, 04-635 Warsaw, Poland;
| | - Andrew A. Flatt
- Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, GA 31419, USA;
| | - Rafał Baranowski
- Department of Heart Rhythm Disorders, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Bożena Werner
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland;
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Chen JM, Chiu PF, Chang YJ, Hsu PC, Chang CC, Lo LC. Effect of electroacupuncture on restless legs syndrome (RLS) in hemodialysis patients: A protocol for systematic review and meta-analysis. Medicine (Baltimore) 2020; 99:e23629. [PMID: 33327340 PMCID: PMC7738042 DOI: 10.1097/md.0000000000023629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Restless legs syndrome (RLS) is frequent in dialysis patients and occurs predominantly in its most severe forms. The aim of the present study was to evaluate the effects of electroacupuncture (EA) in hemodialysis patients with RLS by heart rate variability (HRV) monitor. METHODS One hundred twelve subjects who were hemodialysis patients with RLS will be divided into 2 groups: experimental and control. Each subject will receive the treatment relevant to their group 2 times a week for 4 weeks. After 4 weeks of treatment the subject will enter a 2-week washout period, after which the subjects will switch groups. Measurements will include HRV recordings, International Restless Legs Syndrome Rating Scale (IRLSRS) and Insomnia Severity Index (ISI). RESULT The results of this study will systematically evaluate the effectiveness and safety of electoracupuncture intervention for hemodialysis patients with RLS. DISCUSSION This study is the first investigation to analyze the relationship between EA and the change of HRV by an objective monitor. If the findings of the current trial are positive, this study will also help support an effective, safe and cheap approach to clinical treatment of this challenging disorder, help foster improved understanding the relationship between autonomic nervous system and RLS, and ultimately contribute to elucidate the mechanisms of EA. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04356794; registration date: April 22, 2020.
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Affiliation(s)
- Jia-Ming Chen
- Graduate Institute of Chinese Medicine, China Medical University, Taichung
- Department of Traditional Chinese Medicine, Changhua Christian Hospital, Changhua
| | - Ping-Fang Chiu
- Nephrology Division, Department of Internal Medicine, Changhua Christian Hospital, Changhua
| | - Yu-Jun Chang
- Epidemiology and Biostatistics Center, Changhua Christian Hospital, Changhua
| | - Po-Chi Hsu
- School of Chinese Medicine, China Medical University, Taichung
| | - Chia-Chu Chang
- Division of Nephrology, Department of Internal Medicine, Kuang Tien General Hospital, Taichung
| | - Lun-Chien Lo
- School of Chinese Medicine, China Medical University, Taichung
- Department of Chinese Medicine, China Medical University Hospital, Taichung, Taiwan
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Lam E, Aratia S, Wang J, Tung J. Measuring Heart Rate Variability in Free-Living Conditions Using Consumer-Grade Photoplethysmography: Validation Study. JMIR BIOMEDICAL ENGINEERING 2020. [DOI: 10.2196/17355] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Background
Heart rate variability (HRV) is used to assess cardiac health and autonomic nervous system capabilities. With the growing popularity of commercially available wearable technologies, the opportunity to unobtrusively measure HRV via photoplethysmography (PPG) is an attractive alternative to electrocardiogram (ECG), which serves as the gold standard. PPG measures blood flow within the vasculature using color intensity. However, PPG does not directly measure HRV; it measures pulse rate variability (PRV). Previous studies comparing consumer-grade PRV with HRV have demonstrated mixed results in short durations of activity under controlled conditions. Further research is required to determine the efficacy of PRV to estimate HRV under free-living conditions.
Objective
This study aims to compare PRV estimates obtained from a consumer-grade PPG sensor with HRV measurements from a portable ECG during unsupervised free-living conditions, including sleep, and examine factors influencing estimation, including measurement conditions and simple editing methods to limit motion artifacts.
Methods
A total of 10 healthy adults were recruited. Data from a Microsoft Band 2 and a Shimmer3 ECG unit were recorded simultaneously using a smartphone. Participants wore the devices for >90 min during typical day-to-day activities and while sleeping. After filtering, ECG data were processed using a combination of discrete wavelet transforms and peak-finding methods to identify R-R intervals. P-P intervals were edited for deletion using methods based on outlier detection and by removing sections affected by motion artifacts. Common HRV metrics were compared, including mean N-N, SD of N-N intervals, percentage of subsequent differences >50 ms (pNN50), root mean square of successive differences, low-frequency power (LF), and high-frequency power. Validity was assessed using root mean square error (RMSE) and Pearson correlation coefficient (R2).
Results
Data sets for 10 days and 9 corresponding nights were acquired. The mean RMSE was 182 ms (SD 48) during the day and 158 ms (SD 67) at night. R2 ranged from 0.00 to 0.66, with 2 of 19 (2 nights) trials considered moderate, 7 of 19 (2 days, 5 nights) fair, and 10 of 19 (8 days, 2 nights) poor. Deleting sections thought to be affected by motion artifacts had a minimal impact on the accuracy of PRV measures. Significant HRV and PRV differences were found for LF during the day and R-R, SDNN, pNN50, and LF at night. For 8 of the 9 matched day and night data sets, R2 values were higher at night (P=.08). P-P intervals were less sensitive to rapid R-R interval changes.
Conclusions
Owing to overall poor concurrent validity and inconsistency among participant data, PRV was found to be a poor surrogate for HRV under free-living conditions. These findings suggest that free-living HRV measurements would benefit from examining alternate sensing methods, such as multiwavelength PPG and wearable ECG.
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Hoffmann B, Flatt AA, Silva LEV, Młyńczak M, Baranowski R, Dziedzic E, Werner B, Gąsior JS. A Pilot Study of the Reliability and Agreement of Heart Rate, Respiratory Rate and Short-Term Heart Rate Variability in Elite Modern Pentathlon Athletes. Diagnostics (Basel) 2020; 10:E833. [PMID: 33081149 PMCID: PMC7602793 DOI: 10.3390/diagnostics10100833] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 01/18/2023] Open
Abstract
Research on reliability of heart rate variability (HRV) parameters in athletes has received increasing attention. The aims of this study were to examine the inter-day reliability of short-term (5 min) and ultra-short-term (1 min) heart rate (HR), respiratory rate (RespRate) and HRV parameters, agreement between short-term and ultra-short-term parameters, and association between differences in HR, RespRate and HRV parameters in elite modern pentathletes. Electrocardiographic recordings were performed in stable measurement conditions with a week interval between tests. Relative reliability was evaluated by intra-class correlation coefficients, absolute reliability was evaluated by within-subject coefficient of variation, and agreement was evaluated using Bland-Altman (BA) plot with limits of agreement and defined a priori maximum acceptable difference. Short-term HR, RespRate, log transformed (ln) root mean square of successive normal-to-normal interval differences (lnRMSSD), ln high frequency (lnHF) and SD2/SD1 HRV indices and ultra-short-term HR, RespRate and lnRMSSD presented acceptable, satisfactory inter-day reliability. Although there were no significant differences between short-term and ultra-short-term HR, RespRate and lnRMSSD, no parameter showed acceptable differences with BA plots. Differences in time-domain and non-linear HRV parameters were more correlated with differences in HR than with differences in RespRate. Inverse results were observed for frequency-domain parameters. Short-term HR, RespRate, lnRMSSD, lnHF, and SD2/SD1 and ultra-short-term HR, RespRate and lnRMSSD could be used as reliable parameters in endurance athletes. However, practitioners should interpret changes in HRV parameters with regard to concomitant differences in HR and RespRate and caution should be taken before considering 5 min and 1 min parameters as interchangeable.
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Affiliation(s)
- Bartosz Hoffmann
- Physiotherapy Division, Faculty of Medical Sciences, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Andrew A. Flatt
- Biodynamics and Human Performance Center, Department of Health Sciences and Kinesiology, Georgia Southern University (Armstrong Campus), Savannah, GA 31419, USA;
| | - Luiz Eduardo Virgilio Silva
- Department of Internal Medicine of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil;
| | - Marcel Młyńczak
- Faculty of Mechatronics, Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, 02-525 Warsaw, Poland;
| | - Rafał Baranowski
- Department of Heart Rhythm Disorders, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Ewelina Dziedzic
- Medical Faculty, Lazarski University in Warsaw, 02-662 Warsaw, Poland;
| | - Bożena Werner
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Jakub S. Gąsior
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland;
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Haag K, Hiller R, Peyk P, Michael T, Meiser-Stedman R, Fearon P, Ehlers A, Halligan SL. A Longitudinal Examination of Heart-Rate and Heart Rate Variability as Risk Markers for Child Posttraumatic Stress Symptoms in an Acute Injury Sample. JOURNAL OF ABNORMAL CHILD PSYCHOLOGY 2020; 47:1811-1820. [PMID: 31073881 PMCID: PMC6805807 DOI: 10.1007/s10802-019-00553-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Heart rate (HR) alterations in the immediate aftermath of trauma-exposure have been proposed to be potentially useful markers for child and adolescent posttraumatic stress disorder (PTSD). However, it is not yet clear if this holds true for measures taken more distal to the trauma, and no studies have investigated the predictive validity of more sensitive HR variability (HRV) indices. We recruited 76 parent-child pairs (child age 6 to 13 years) after the child experienced a traumatic event leading to presentation at a hospital emergency department. At 1-month post trauma (T1), HR recordings were obtained at rest, and while children verbally recounted their traumatic experience, both alone and together with a parent. Child post-traumatic stress symptoms (PTSS) were assessed concurrently (T1), and at 3 (T2) and 6-month (T3) follow-ups. We found that for T1, elevated mean HR during trauma narratives, but not at baseline, was positively associated with PTSS, with some evidence that HRV-indices were negatively cross-sectionally associated with PTSS. Furthermore, T1 HR indices predicted PTSS at T2 and partially at T3, although these effects did not hold when T1 PTSS were added to the model. Findings suggest that, consistent with the adult literature, HR indices in children may be a concurrent marker of higher PTSS and may be predictive of longer term distress. The findings encourage further investigations that track child HR and HRV in relation to PTSS over time after trauma, in order to examine how biological profiles evolve in those with persistent symptoms.
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Affiliation(s)
| | - Rachel Hiller
- Department of Psychology, University of Bath, Bath, UK
| | - Peter Peyk
- Department of Consultation-Liaison-Psychiatry and Psychosomatic Medicine, University Hospital Zurich, Zürich, Switzerland
| | - Tanja Michael
- Department for Clinical Psychology and Psychotherapy, University of Saarland, Saarbrücken, Germany
| | | | - Pasco Fearon
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - Anke Ehlers
- Department of Psychology, University of Oxford, Oxford, UK
| | - Sarah L Halligan
- Department of Psychology, University of Bath, Bath, UK.
- Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa.
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Dono F, Evangelista G, Frazzini V, Vollono C, Carrarini C, Russo M, Ferrante C, Di Stefano V, Marchionno LP, De Angelis MV, Faustino M, Bonanni L, Onofrj M, Sensi SL, Anzellotti F. Interictal Heart Rate Variability Analysis Reveals Lateralization of Cardiac Autonomic Control in Temporal Lobe Epilepsy. Front Neurol 2020; 11:842. [PMID: 32922353 PMCID: PMC7456848 DOI: 10.3389/fneur.2020.00842] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 07/07/2020] [Indexed: 01/03/2023] Open
Abstract
Purpose: The temporal lobe, a critical hub for cognition, also plays a central role in the regulation of autonomic cardiovascular functions. Lesions in this area are usually associated with abnormalities in the regulation of heart rate (HR) and blood pressure (BP). The analysis of the heart rate variability (HRV) is useful to evaluate the cardiac parasympathetic nervous system activity. This study aims at comparing HRV changes occurring in two groups of patients suffering from Temporal Lobe Epilepsy (TLE). To that aim, we evaluated patients differentiated by the right or left location of the epileptic foci. Materials and Methods: Fifty-two adult patients with a diagnosis of TLE were enrolled. Each patient underwent a 20-min EEG + EKG recording in resting state. According to the localization of epileptic focus, patients were divided into two subgroups: right TLE (R-TLE) and left TLE (L-TLE). HRV parameters were calculated with a short-lasting analysis of EKG recordings. Time-domain and frequency domain-related, as well as non-linear analysis, parameters, were compared between the two groups. Results: Compared to the R-TLE group, L-TLE subjects showed a significant decrease in low frequency (LF) (p < 0.01) and low frequency/high-frequency ratio (LF/HF) (p < 0.001) as well as increased HF values (p < 0.01), a parameter indicative of the presence of an increased cardiac vagal tone. These results were also confirmed in the subgroup analysis that took into account the seizure types, responses to antiepileptic drugs, seizure frequencies, and etiology. Conclusions: The main finding of the study is that, compared to R-TLE, L-TLE is associated with increased cardiac vagal tone. These results indicate that patients with TLE exhibit a lateralized cardiac autonomic control. L-TLE patients may have a lower risk of developing cardiac dysfunctions and less susceptible to develop Sudden Death for Epilepsy (SUDEP).
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Affiliation(s)
- Fedele Dono
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Giacomo Evangelista
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Valerio Frazzini
- AP-HP, Epilepsy Unit, Pitié-Salpêtrière Hospital, and Sorbonne University, Paris, France.,Brain and Spine Institute (INSERM UMRS1127, CNRS UMR7225, Sorbonne Université), Pitié-Salpêtrière Hospital, Paris, France
| | - Catello Vollono
- Unit of Neurophysiopathology and Sleep Medicine, Department of Geriatrics, Neurosciences and Orthopedics, IRCCS Policlinico Universitario Agostino Gemelli, Catholic University, Rome, Italy
| | - Claudia Carrarini
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Mirella Russo
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Camilla Ferrante
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Vincenzo Di Stefano
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Department of Biomedicine, Neuroscience and Advanced Diagnostic (BIND), University of Palermo, Palermo, Italy
| | | | | | | | - Laura Bonanni
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Center for Advanced Studies and Technology - CAST, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Marco Onofrj
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Center for Advanced Studies and Technology - CAST, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Stefano L Sensi
- Department of Neuroscience, Imaging and Clinical Science, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Center for Advanced Studies and Technology - CAST, "G. D'Annunzio" University of Chieti-Pescara, Chieti, Italy
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The Emotional Attentional Blink as a Measure of Patriotism. SPANISH JOURNAL OF PSYCHOLOGY 2020; 23:e30. [PMID: 32744218 DOI: 10.1017/sjp.2020.32] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study aims to explore whether the implicit processing of emotional symbols related to patriotic feeling may exert some effects on attention. Here, we have conducted an experiment using two interrelated tasks. First, we use flags with different meanings to participants for measuring the strength of the emotional attentional blink (EAB) within a rapid serial visual presentation (RSVP) paradigm. Then, we use a "congruency judgments" subjective test, where we confront participants to judge the affinity between pairs of politician leaders and flags of different sign for community participants, while recording two physiological measures (Heart Rate Variance and Galvanic Skin Response) to evaluate the variations elicited by that confrontation. Results on the EAB task show a significant emotion induced blindness for emotional stimuli representing Catalan and Spanish patriotism (α = .05), while the effect does not appear for the stimulus representing neutral patriotism. The interaction "Flags x Patriotism" was significant, F(1, 51) = 4.62; p = .036; ηp2 = .083. Results on the second task show that measures derived from electrophysiological records are sensitive to patriotic feeling, both being complementary. In addition, by using measures of congruence, the "Leaders x Flags" interaction was significant, F(3.682, 125.204) = 53.55; p < .001; ηp2 = .612. Finally, a multiple linear regression model for each emotional inductor was verified for the Catalan case, using the EAB effect as criteria, R2Adjusted = .79; p < .001. Some theoretical and methodological aspects derived of this exploratory study are discussed.
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40
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Restan AZ, Camacho AA, Cerqueira JA, Zacché E, Kirnew MD, Loureiro BA, Silva SB, Moranza HG, Ferraz GC. Effect of a lactate-guided conditioning program on heart rate variability obtained using 24-Holter electrocardiography in Beagle dogs. PLoS One 2020; 15:e0233264. [PMID: 32479554 PMCID: PMC7263627 DOI: 10.1371/journal.pone.0233264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 05/03/2020] [Indexed: 11/18/2022] Open
Abstract
The dogs’ responses to training exercise are seldom monitored using physiological variables, and cardiac autonomic regulation (CAR) is a relevant determinant of endurance-training adaptation. There are studies in the literature establishing that regular exercise could interfere with CAR in dogs, measured by heart rate and vagal-derived indexes of heart-rate-variability (HRV). However, few studies were found using a prescribed training program based on the lactate threshold (LT) to determine HRV by a 24-h Holter analysis. The purpose of this study was to test whether an endurance-training program (ETP) guided individually by LT raises time-domain measures of HRV in healthy Beagle dogs. Twenty dogs were assigned to two groups: control (C) and trained (T). The dogs from group T underwent an incremental exercise test (IET) to determine their LT. Both LT and velocity corresponding to the LT (VLT) was determined by visual inspection. T group performed an eight-week endurance-training program consisting of treadmill runs set to 70–80% of the VLT. Next, dogs from the group T have submitted to IET again. The maximal velocities (Vmax) at which achieved by the trained dogs in both IETs were determined. The group S did not undergo IETs or ETP. HRV was determined by the 24-hour-Holter at rest, before and on the 2°, 4°, 6° and 8° training weeks. To examine the HR impact on HRV, standard HRV variables were normalized to prevailing HR. VLT and Vmax rose in group T, indicating an improvement of dogs’ aerobic and anaerobic capacity. The normalized standard HRV indexes were relatively attenuated since these variables had a reduction in the degree of correlation concerning an average HR. The ETP resulted in decreased resting heart rate and increased time-domain indices, highlighting the log-transformed square root of the mean sum of the squared differences between R–R intervals (Ln rMSSD). The lactate-guided endurance-training program could lead to better parasympathetic cardiac modulation in Beagle dogs.
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Affiliation(s)
- Alejandro Z. Restan
- Department of Animal Morphology and Physiology, Laboratory of Pharmacology and Equine Exercise Physiology (LAFEQ), School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil
| | - Aparecido A. Camacho
- Department of Veterinary Medicine and Surgery, School of Agricultural and Veterinarian Sciences College of Agriculture and Veterinary Sciences (FCAV), São Paulo State University Universidade Estadual Paulista (UNESP), Jaboticabal, SP, Brazil
| | - Juliana A. Cerqueira
- Department of Animal Morphology and Physiology, Laboratory of Pharmacology and Equine Exercise Physiology (LAFEQ), School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil
| | - Evandro Zacché
- Department of Veterinary Medicine and Surgery, School of Agricultural and Veterinarian Sciences College of Agriculture and Veterinary Sciences (FCAV), São Paulo State University Universidade Estadual Paulista (UNESP), Jaboticabal, SP, Brazil
| | - Murillo D. Kirnew
- Department of Veterinary Medicine and Surgery, School of Agricultural and Veterinarian Sciences College of Agriculture and Veterinary Sciences (FCAV), São Paulo State University Universidade Estadual Paulista (UNESP), Jaboticabal, SP, Brazil
| | - Bruna A. Loureiro
- Centro de Ciências Agrárias, Department of Animal Science, Universidade Federal da Paraíba, Centro de Ciências Agrárias, Areia, Paraiba, Brazil
| | - Samara B. Silva
- Department of Animal Morphology and Physiology, Laboratory of Pharmacology and Equine Exercise Physiology (LAFEQ), School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil
| | - Henriette G. Moranza
- Department of Animal Morphology and Physiology, Laboratory of Pharmacology and Equine Exercise Physiology (LAFEQ), School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil
| | - Guilherme C. Ferraz
- Department of Animal Morphology and Physiology, Laboratory of Pharmacology and Equine Exercise Physiology (LAFEQ), School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil
- * E-mail:
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Benjamim CJR, S Júnior FW, de Figueirêdo MÍLS, Benjamim CJR, Cavalcante TCF, da Silva AAM, Monteiro LRL, Santana MDR, Garner DM, Valenti VE. Beetroot ( Beta Vulgaris L.) Extract Acutely Improves Heart Rate Variability Recovery Following Strength Exercise: A Randomized, Double-Blind, Placebo-Controlled Crossover Trial-Pilot Study. J Am Coll Nutr 2020; 40:307-316. [PMID: 32469260 DOI: 10.1080/07315724.2020.1774441] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE We assessed the acute effect of beetroot extract intake on cardiovascular and autonomic recovery subsequent to strength exercise. METHODS This is a crossover, randomized, double-blind and placebo-controlled trial. We assessed 16 subjects but only 12 healthy male adults completed the two protocols in two randomized days: Beetroot extract (600 mg in capsule) and placebo (600 mg starch in capsule). Beetroot extract or placebo was ingested, the subjects endured 120 minutes seated at rest, followed by a 75% 1RM strength exercise and then remained seated for 60 minutes at rest. Cardiorespiratory parameters, heart rate (HR) variability (HRV) (SDNN, rMSSD, pNN50, SD1, SD2 HF [ms2]) were estimated before, during exercise and during recovery from exercise. RESULTS ingestion of beetroot extract before exercise: accelerates the recovery of SBP following physical effort; improves HR recovery to baseline resting levels (beetroot protocol: change in ∼62% vs. placebo protocol: change in ∼80%), and intensifies the return of vagal HR control during recovery after exercise. CONCLUSIONS Beetroot extract acutely improved cardiovascular and autonomic recovery after exercise.
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Affiliation(s)
- Cicero Jonas R Benjamim
- Development, Nutrition, Phytotherapy and Hygiene Research Group, University of Pernambuco, Petrolina, PE, Brazil
| | - Francisco Wellington S Júnior
- Physiological and Collective Sciences Nucleus, University Center of Juazeiro do Norte, Juazeiro do Norte, CE, Brazil
| | - Maria Íris L S de Figueirêdo
- Physiological and Collective Sciences Nucleus, University Center of Juazeiro do Norte, Juazeiro do Norte, CE, Brazil
| | - Cicera Josilânia R Benjamim
- Physiological and Collective Sciences Nucleus, University Center of Juazeiro do Norte, Juazeiro do Norte, CE, Brazil
| | - Taisy C Ferro Cavalcante
- Development, Nutrition, Phytotherapy and Hygiene Research Group, University of Pernambuco, Petrolina, PE, Brazil
| | - Amanda A Marcelino da Silva
- Development, Nutrition, Phytotherapy and Hygiene Research Group, University of Pernambuco, Petrolina, PE, Brazil
| | - Larissa Raylane L Monteiro
- Physiological and Collective Sciences Nucleus, University Center of Juazeiro do Norte, Juazeiro do Norte, CE, Brazil
| | - Milana Drumond R Santana
- Physiological and Collective Sciences Nucleus, University Center of Juazeiro do Norte, Juazeiro do Norte, CE, Brazil
| | - David M Garner
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Cardiorespiratory Research Group, Oxford Brookes University, Oxford, UK
| | - Vitor E Valenti
- Autonomic Nervous System Center (CESNA), Sao Paulo State University, UNESP, Marilia, SP, Brazil
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42
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Kristiansen E, Wanby P, Åkesson K, Blomstrand P, Brudin L, Thegerström J. Assessing heart rate variability in type 1 diabetes mellitus-Psychosocial stress a possible confounder. Ann Noninvasive Electrocardiol 2020; 25:e12760. [PMID: 32353221 PMCID: PMC7507550 DOI: 10.1111/anec.12760] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/14/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Autonomic neuropathy (AN) commonly arises as a long-term complication in diabetes mellitus and can be diagnosed from heart rate variability (HRV), calculated from electrocardiogram recordings. Psychosocial stress also affects HRV and could be one of several confounders for cardiac AN. The present work investigated the impact of psychosocial stress on HRV in individuals with type 1 diabetes mellitus (T1DM) and assessed the use of salivary cortisol as a biomarker for psychosocial stress in this context. METHODS A total of 167 individuals 6-60 years old (113 with T1DM and 54 healthy controls) underwent 24-hr ECG recordings with HRV analysis. Salivary cortisol was sampled thrice during the registration day. Perceived psychosocial stress along with other factors of possible importance for the interpretation of HRV was documented in a diary. RESULTS Heart rate variability (high-frequency power during sleep) was reduced (p < .05) with older age, longer diabetes duration, higher mean glucose levels, physical inactivity, and perceived psychosocial stress. Salivary cortisol levels in the evening were increased (p < .05) in women in ovulation phase, in individuals with preceding hypoglycemia or with hyperglycemia. The amplitude of salivary cortisol was reduced (p < .05) with the presence of perceived psychosocial stress, but only in adult healthy controls, not in individuals with diabetes. CONCLUSION Psychosocial stress might be a confounder for reduced HRV when diagnosing cardiac AN in T1DM. Salivary cortisol is, however, not a useful biomarker for psychosocial stress in diabetes since the physiological stress of both hypoglycemia and hyperglycemia seems to overrule the effect of psychosocial stress on cortisol.
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Affiliation(s)
- Eva Kristiansen
- Department of Pediatrics, Region Kalmar County, Kalmar, Sweden
| | - Pär Wanby
- Department of Medicine and Optometry, Linnaeus University, Kalmar, Sweden.,Department of Internal Medicine, Section of Endocrinology, Region Kalmar County, Kalmar, Sweden
| | - Karin Åkesson
- Futurum - Academy for Health and Care, Jönköping, Sweden.,Department of Pediatrics, Region Jönköping County, Jönköping, Sweden
| | - Peter Blomstrand
- Department of Natural Science and Biomedicine, School of Health and Welfare, Jönköping University, Jönköping, Sweden.,Department of Clinical Physiology, Region Jönköping County, Jönköping, Sweden
| | - Lars Brudin
- Department of Clinical Physiology, Region Kalmar County, Kalmar, Sweden
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43
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Gąsior JS, Zamunér AR, Silva LEV, Williams CA, Baranowski R, Sacha J, Machura P, Kochman W, Werner B. Heart Rate Variability in Children and Adolescents with Cerebral Palsy-A Systematic Literature Review. J Clin Med 2020; 9:jcm9041141. [PMID: 32316278 PMCID: PMC7230809 DOI: 10.3390/jcm9041141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 12/14/2022] Open
Abstract
Cardiac autonomic dysfunction has been reported in patients with cerebral palsy (CP). The aim of this study was to assess the existing literature on heart rate variability (HRV) in pediatric patients with CP and a special attention was paid to the compliance of the studies with the current HRV assessment and interpretation guidelines. A systematic review was performed in PubMed, Web of Science, and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases searched for English language publications from 1996 to 2019 using Medical Subject Headings (MeSH) terms “heart rate variability” and “cerebral palsy” in conjunction with additional inclusion criteria: studies limited to humans in the age range of 0–18 years and empirical investigations. Out of 47 studies, 12 were included in the review. Pediatric patients with CP presented a significantly higher resting heart rate and reduced HRV, different autonomic responses to movement stimuli compared to children with normal development, but also reduced HRV parameters in the children dependent on adult assistance for mobility compared to those generally independent. None of the included studies contained the necessary details concerning RR intervals acquisition and HRV measurements as recommended by the guidelines. Authors of HRV studies should follow the methodological guidelines and recommendations on HRV measurement, because such an approach may allow a direct comparison of their results.
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Affiliation(s)
- Jakub S. Gąsior
- Faculty of Medical Sciences and Health Sciences, Kazimierz Pulaski University of Technology and Humanities, 26-600 Radom, Poland
- Correspondence: ; Tel.: +48-793-199-222
| | | | - Luiz Eduardo Virgilio Silva
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo 14049-900, Brazil;
| | - Craig A. Williams
- Children’s Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, St Luke’s Campus, Exeter EX1 2LU, UK;
| | - Rafał Baranowski
- Department of Heart Rhythm Disorders, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Jerzy Sacha
- Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-758 Opole, Poland;
- Department of Cardiology, University Hospital in Opole, University of Opole, 45-401 Opole, Poland
| | - Paulina Machura
- Department of Gynaecological Endocrinology, Medical University of Warsaw, 00-950 Warsaw, Poland;
| | - Wacław Kochman
- Clinical Department of Cardiology at Bielanski Hospital, National Institute of Cardiology, 01-809 Warsaw, Poland;
| | - Bożena Werner
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, 02-091 Warsaw, Poland;
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Bentley RF, Vecchiarelli E, Banks L, Gonçalves PEO, Thomas SG, Goodman JM. Heart rate variability and recovery following maximal exercise in endurance athletes and physically active individuals. Appl Physiol Nutr Metab 2020; 45:1138-1144. [PMID: 32294393 DOI: 10.1139/apnm-2020-0154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The purpose of this study was to determine potential adverse cardiac effects of chronic endurance training by comparing sympathovagal modulation via heart rate variability (HRV) and heart rate recovery (HRR) in middle-aged endurance athletes (EA) and physically active individuals (PA) following maximal exercise. Thirty-six (age, 53 ± 5 years) EA and 19 (age, 56 ± 5 years) PA were recruited to complete a 2-week exercise diary and graded exercise to exhaustion. Time domain and power spectral HRV analyses were completed on recorded R-R intervals. EA had a greater HRR slope following exercise (95% confidence interval, 0.0134-0.0138 vs. 0.0101-0.0104 beats/s; p < 0.001). While EA had greater HRR at 1-5 min after exercise (all p < 0.01), PA and EA did not differ when expressed as a percentage of baseline heart rate (130 ± 19 vs. 139 ± 19; p = 0.2). Root mean square of successive differences in R-R intervals (rest and immediately after exercise) were elevated in EA (p < 0.05). Low-frequency (LF) and high-frequency (HF) spectral components were nonsignificantly elevated after exercise (p = 0.045-0.147) in EA while LF/HF was not different (p = 0.529-0.986). This data suggests greater HRR in EA may arise in part due to a lower resting HR. While nonsignificant elevations in HF and LF in EA produces a LF/HF similar to PA, absolute spectral component modulation differed. These observations require further exploration. Novelty Acute effects of exercise on HRV in EA compared with a relevant control group, PA, are unknown. EA had greater HRR and nonsignificant elevations in LF and HF compared with PA, yet LF/HF was not different. Future work should explore the implications of this observation.
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Affiliation(s)
- Robert F Bentley
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON M5S 2C9, Canada
| | - Emily Vecchiarelli
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON M5S 2C9, Canada
| | - Laura Banks
- University Health Network/Toronto Rehabilitation Institute, Cardiovascular Prevention and Rehabilitation Program, Toronto, ON M5G 2A2, Canada
| | - Patric E O Gonçalves
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON M5S 2C9, Canada
| | - Scott G Thomas
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON M5S 2C9, Canada
| | - Jack M Goodman
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON M5S 2C9, Canada.,Division of Cardiology, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada
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Bokov P, El Jurdi H, Denjoy I, Peiffer C, Medjahdi N, Holvoet L, Benkerrou M, Delclaux C. Salbutamol Worsens the Autonomic Nervous System Dysfunction of Children With Sickle Cell Disease. Front Physiol 2020; 11:31. [PMID: 32174840 PMCID: PMC7054439 DOI: 10.3389/fphys.2020.00031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/15/2020] [Indexed: 11/13/2022] Open
Abstract
Background Sickle cell disease (SCD) patients with asthma have an increased rate of vaso-occlusive crisis (VOC) and acute chest syndrome (ACS) episodes when compared to those without asthma. We hypothesized that either asthma diagnosis or bronchodilator treatment might aggravate SCD via their modulating effect on the autonomic nervous system (ANS). Methods Cross-sectional evaluation of heart rate variability (HRV) during pulmonary function tests, including salbutamol administration, in children with SCD receiving asthma treatment or not when compared to asthmatic children without SCD matched for ethnicity. Results SCD children with asthma (n = 30, median age of 12.9 years old) were characterized by a reduced FEV1/FVC ratio, an increased bronchodilator response, and a greater incidence of VOC and ACS when compared to SCD children without asthma (n = 30, 12.7 years). Children with asthma without SCD (n = 29, 11.4 years) were characterized by a higher exhaled NO fraction than SCD children. SCD children when compared to non-SCD children showed reduced HRV [total power, low (LF) and high (HF, vagal tone) frequencies], which was further worsened by salbutamol administration in all the groups: reduction in total power and HF with an increase in LF/HF ratio. After salbutamol, the LF/HF ratio of the SCD children was higher than that of the non-SCD children. The two groups of SCD children were similar, suggesting that asthma diagnosis per se did not modify ANS functions. Conclusion SCD children are characterized by impaired parasympathetic control and sympathetic overactivity that is worsened by salbutamol administration. Clinical Trial Registration www.ClinicalTrials.gov, identifier NCT04062409.
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Affiliation(s)
- Plamen Bokov
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France.,UMR 1141, Equipe NeoPhen, INSERM co-tutelle, Université de Paris, Paris, France
| | - Houmam El Jurdi
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Isabelle Denjoy
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Claudine Peiffer
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Noria Medjahdi
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Laurent Holvoet
- Service d'Hématologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Malika Benkerrou
- Service d'Hématologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France
| | - Christophe Delclaux
- Service de Physiologie Pédiatrique, AP-HP, Hôpital Robert Debré, Paris, France.,UMR 1141, Equipe NeoPhen, INSERM co-tutelle, Université de Paris, Paris, France
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Short-term Heart-rate Variability in Healthy Small and Medium-sized Dogs Over a Five-minute Measuring Period. J Vet Res 2020; 64:161-167. [PMID: 32258813 PMCID: PMC7105988 DOI: 10.2478/jvetres-2020-0013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 02/03/2020] [Indexed: 02/08/2023] Open
Abstract
Introduction Five-minute heart-rate variability (HRV) measurement is a useful tool for assessing the autonomic nervous system (ANS) balance in humans, but there are no studies on healthy dogs. The aim of the study was, therefore, to provide the reference ranges in small and medium-sized breeds for short-term HRV time and frequency domain (TFD) analyses. Material and Methods A total of 79 healthy dogs were included in the study between 2015 and 2019. Grouping by age with the breakpoint at six years and subgrouping by reproductive status and sex was imposed. All the dogs were included after physical and cardiological examinations and blood analyses. The TFD of HRV were analysed from a five-minute-long digital ECG recording after removal of non-sinus complexes. Results There were no statistically significant differences in any TFD parameters between age, reproductive status or sex groups. A mild increase in all time domain parameters and the high-frequency (HF) band was observed in older dogs, and the low frequency (LF):HF ratio decreased in these dogs. In males, the time domain parameters and HF band increased slightly. Conclusion The normal ranges for HRV derived from short-term ECG recording in the usual clinical environment now have proposed reference ranges. Our findings suggest that accommodation time, age, sex, or reproductive status do not influence the results derived from these recordings, indicating that this method is reliable for assessing the ANS function in small and medium-sized dog breeds.
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Moïse NS, Flanders WH, Pariaut R. Beat-to-Beat Patterning of Sinus Rhythm Reveals Non-linear Rhythm in the Dog Compared to the Human. Front Physiol 2020; 10:1548. [PMID: 32038271 PMCID: PMC6990411 DOI: 10.3389/fphys.2019.01548] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 12/09/2019] [Indexed: 02/06/2023] Open
Abstract
The human and dog have sinus arrhythmia; however, the beat-to-beat interval changes were hypothesized to be different. Geometric analyses (R–R interval tachograms, dynamic Poincaré plots) to examine rate changes on a beat-to-beat basis were analyzed along with time and frequency domain heart rate variability from 40 human and 130 canine 24-h electrocardiographic recordings. Humans had bell-shaped beat-interval distributions, narrow interval bands across time with continuous interval change and linear changes in rate. In contrast, dogs had skewed non-singular beat distributions, wide interval bands {despite faster average heart rate of dogs [mean (range); 81 (64–119)] bpm compared to humans [74.5 (59–103) p = 0.005]} with regions displaying a paucity of intervals (zone of avoidance) and linear plus non-linear rate changes. In the dog, dynamic Poincaré plots showed linear rate changes as intervals prolonged until a point of divergence from the line of identity at a mean interval of 598.5 (95% CI: 583.5–613.5) ms (bifurcation interval). The dog had bimodal beat distribution during sleep with slower rates and greater variability than during active hours that showed singular interval distributions, higher rates and less variability. During sleep, Poincaré plots of the dog had clustered or branched patterns of intervals. A slower rate supported greater parasympathetic modulation with a branched compared to the clustered distribution. Treatment with atropine eliminated the non-linear patterns, while hydromorphone shifted the bifurcated branching and beat clustering to longer intervals. These results demonstrate the unique non-linear nature of beat-to-beat variability in the dog compared to humans with increases in interval duration (decrease heart rate). These results provoke the possibility that changes are linear with a dominant sympathetic modulation and non-linear with a dominant parasympathetic modulation. The abrupt bifurcation, zone of avoidance and beat-to-beat patterning are concordant with other studies demonstrating the development of exit block from the sinus node with parasympathetic modulation influencing not only the oscillation of the pacing cells, but conduction to the atria. Studies are required to associate the in vivo sinus node beat patterns identified in this study to the mapping of sinus impulse origin and exit from the sinus node.
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Affiliation(s)
- N Sydney Moïse
- College of Veterinary Medicine, Department of Clinical Sciences, Cornell University, Ithaca, NY, United States
| | - Wyatt H Flanders
- Department of Physics, University of Washington, Seattle, WA, United States
| | - Romain Pariaut
- College of Veterinary Medicine, Department of Clinical Sciences, Cornell University, Ithaca, NY, United States
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Friederichs E, Kärner T, Friederichs KM, Lehmeier S. Too much of a good thing? Curvilinear relationships between self-calming and autonomic responses in paediatric patients. Med Hypotheses 2019; 137:109536. [PMID: 31952018 DOI: 10.1016/j.mehy.2019.109536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 11/26/2022]
Abstract
Based on the theory of self-regulation and the polyvagal theory, we hypothesise a curvilinear relationship between self-regulation and autonomic responses. We report findings of a pilot study that provides support for the proposed hypothesis. For some of the observed cases, the quadratic polynomial regression models the data better than the linear regression model, indicating curvilinear relationships between self-regulation and indicators of autonomic response. Consequences of the hypothesis and its relevance for therapeutic interventions supporting the patients' self-calming system are discussed.
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Affiliation(s)
- Edgar Friederichs
- University of Bamberg, Centre for Learning and Development, Germany.
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49
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Billman GE, Sacha J, Werner B, Jelen PJ, Gąsior JS. Editorial: Heart Rate Variability and Other Autonomic Markers in Children and Adolescents. Front Physiol 2019; 10:1265. [PMID: 31680995 PMCID: PMC6807954 DOI: 10.3389/fphys.2019.01265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 09/19/2019] [Indexed: 12/04/2022] Open
Affiliation(s)
- George E Billman
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, United States
| | - Jerzy Sacha
- Faculty of Physical Education and Physiotherapy, Opole University of Technology, Opole, Poland.,Department of Cardiology, University of Opole, Opole, Poland
| | - Bozena Werner
- Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, Warsaw, Poland
| | - Piotr Jerzy Jelen
- Department of Biophysics and Human Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Jakub S Gąsior
- Faculty of Health Sciences and Physical Education, Kazimierz Pulaski University of Technology and Humanities, Radom, Poland.,Clinical Department of Cardiology at Bielanski Hospital, Institute of Cardiology, Warsaw, Poland
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Gómez-Vela P, Pérez-Ruiz M, Hernández Martín MF, Román J, Larumbe-Zabala E. Acute effect of orange chromatic environment on perceived health status, pain, and vital signs during chemotherapy treatment. Support Care Cancer 2019; 28:2321-2329. [PMID: 31482404 DOI: 10.1007/s00520-019-05064-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 08/28/2019] [Indexed: 12/19/2022]
Abstract
PURPOSE The study is aimed at assessing the acute effect of orange color and natural light exposure on cancer patients during chemotherapy sessions. Warmer environments and rooms receiving more sunlight hours were expected to impact vital signs, quality of life, and pain symptoms. METHODS We used a single-group repeated-measures clinical trial design. For the purpose of the study, chemotherapy rooms were modified based on two experimental factors: color (white vs. orange) and sunlight orientation (south vs. north). On four consecutive sessions, cancer patients were randomly assigned to one of the following conditions: orange-north, orange-south, white-north, and white-south. They received chemotherapy per standard of care. The following outcomes were assessed: blood pressure, body temperature, heart rate, and European Quality of Life Five-Dimension Five-Level Scale Questionnaire (EUROQOL-5D-5L) including the visual analogue scale (EQ-VAS). RESULTS Statistically significant beneficial effect of orange color room in self-rated health was found (p = 0.036, d = 0.28). Small differences in other parameters (body temperature, d = 0.34; diastolic blood pressure, d = 0.37; systolic blood pressure, d = 0.28) did not reach statistical significance. No differences were found based on room orientation. CONCLUSIONS Compared with a cool-color design, a warm-color living environment could have a positive effect on patients' well-being during chemotherapy sessions. Although the clinical effect size on perceived health status and vital signs could be considered small, the cost-effectiveness analysis would support the use of the proposed configurations. More research is still needed. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03873519.
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Affiliation(s)
- Paula Gómez-Vela
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Tajo s/n, Villaviciosa de Odón, 28670, Madrid, Spain
| | - Margarita Pérez-Ruiz
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Tajo s/n, Villaviciosa de Odón, 28670, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital Gregorio Marañón, 28007, Madrid, Madrid, Spain
| | - María Fátima Hernández Martín
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Tajo s/n, Villaviciosa de Odón, 28670, Madrid, Spain
| | - Javier Román
- IOB Institute of Oncology, Quironsalud Group, Juan Bravo 39, 28006, Madrid, Spain
| | - Eneko Larumbe-Zabala
- Clinical Research Institute, Texas Tech University Health Sciences Center, 3106 4th Street, STOP 8183, Lubbock, TX, 79430, USA.
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