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Addleman JS, Lackey NS, DeBlauw JA, Hajduczok AG. Heart Rate Variability Applications in Strength and Conditioning: A Narrative Review. J Funct Morphol Kinesiol 2024; 9:93. [PMID: 38921629 PMCID: PMC11204851 DOI: 10.3390/jfmk9020093] [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: 04/16/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
Heart rate variability (HRV) is defined as the fluctuation of time intervals between adjacent heartbeats and is commonly used as a surrogate measure of autonomic function. HRV has become an increasingly measured variable by wearable technology for use in fitness and sport applications. However, with its increased use, a gap has arisen between the research and the application of this technology in strength and conditioning. The goal of this narrative literature review is to discuss current evidence and propose preliminary guidelines regarding the application of HRV in strength and conditioning. A literature review was conducted searching for HRV and strength and conditioning, aiming to focus on studies with time-domain measurements. Studies suggest that HRV is a helpful metric to assess training status, adaptability, and recovery after a training program. Although reduced HRV may be a sign of overreaching and/or overtraining syndrome, it may not be a sensitive marker in aerobic-trained athletes and therefore has different utilities for different athletic populations. There is likely utility to HRV-guided programming compared to predefined programming in several types of training. Evidence-based preliminary guidelines for the application of HRV in strength and conditioning are discussed. This is an evolving area of research, and more data are needed to evaluate the best practices for applying HRV in strength and conditioning.
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Affiliation(s)
- Jennifer S. Addleman
- College of Osteopathic Medicine, Touro University California, Vallejo, CA 94592, USA
| | - Nicholas S. Lackey
- Center for Applied Biobehavioral Sciences (CABS), Alliant International University, San Diego, CA 92131, USA;
| | - Justin A. DeBlauw
- Department of Health and Human Physiological Sciences, Skidmore College, Saratoga Springs, NY 12866, USA
| | - Alexander G. Hajduczok
- Department of Cardiology, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA;
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2
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Pichot V, Corbier C, Chouchou F, Barthélémy JC, Roche F. CVRanalysis: a free software for analyzing cardiac, vascular and respiratory interactions. Front Physiol 2024; 14:1224440. [PMID: 38250656 PMCID: PMC10797906 DOI: 10.3389/fphys.2023.1224440] [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: 05/17/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction: Simultaneous beat-to-beat R-R intervals, blood pressure and respiration signals are routinely analyzed for the evaluation of autonomic cardiovascular and cardiorespiratory regulations for research or clinical purposes. The more recognized analyses are i) heart rate variability and cardiac coherence, which provides an evaluation of autonomic nervous system activity and more particularly parasympathetic and sympathetic autonomic arms; ii) blood pressure variability which is mainly linked to sympathetic modulation and myogenic vascular function; iii) baroreflex sensitivity; iv) time-frequency analyses to identify fast modifications of autonomic activity; and more recently, v) time and frequency domain Granger causality analyses were introduced for assessing bidirectional causal links between each considered signal, thus allowing the scrutiny of many physiological regulatory mechanisms. Methods: These analyses are commonly applied in various populations and conditions, including mortality and morbidity predictions, cardiac and respiratory rehabilitation, training and overtraining, diabetes, autonomic status of newborns, anesthesia, or neurophysiological studies. Results: We developed CVRanalysis, a free software to analyze cardiac, vascular and respiratory interactions, with a friendly graphical interface designed to meet laboratory requirements. The main strength of CVRanalysis resides in its wide scope of applications: recordings can arise from beat-to-beat preprocessed data (R-R, systolic, diastolic and mean blood pressure, respiration) or raw data (ECG, continuous blood pressure and respiratory waveforms). It has several tools for beat detection and correction, as well as setting of specific areas or events. In addition to the wide possibility of analyses cited above, the interface is also designed for easy study of large cohorts, including batch mode signal processing to avoid running repetitive operations. Results are displayed as figures or saved in text files that are easily employable in statistical softwares. Conclusion: CVRanalysis is freely available at this website: anslabtools.univ-st-etienne.fr. It has been developed using MATLAB® and works on Windows 64-bit operating systems. The software is a standalone application avoiding to have programming skills and to install MATLAB. The aims of this paper area are to describe the physiological, research and clinical contexts of CVRanalysis, to introduce the methodological approach of the different techniques used, and to show an overview of the software with the aid of screenshots.
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Affiliation(s)
- Vincent Pichot
- SAINBIOSE U1059, Inserm, Saint-Etienne Jean-Monnet University, Clinical Physiology and Exercise, CHU of Saint-Etienne, Saint-Etienne, France
| | - Christophe Corbier
- LASPI EA3059, Saint-Etienne Jean-Monnet University, Roanne Technology University Institute, Roanne, France
| | - Florian Chouchou
- IRISSE EA4075, UFR SHE, University of La Réunion, Le Tampon, France
| | - Jean-Claude Barthélémy
- SAINBIOSE U1059, Inserm, Saint-Etienne Jean-Monnet University, Clinical Physiology and Exercise, CHU of Saint-Etienne, Saint-Etienne, France
| | - Frédéric Roche
- SAINBIOSE U1059, Inserm, Saint-Etienne Jean-Monnet University, Clinical Physiology and Exercise, CHU of Saint-Etienne, Saint-Etienne, France
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Alexandre F, Molinier V, Hognon L, Charbonnel L, Calvat A, Castanyer A, Henry T, Marcenac A, Jollive M, Vernet A, Oliver N, Heraud N. Time-Course of Changes in Multidimensional Fatigue and Functional Exercise Capacity and Their Associations during a Short Inpatient Pulmonary Rehabilitation Program. COPD 2023; 20:55-63. [PMID: 36655947 DOI: 10.1080/15412555.2022.2164261] [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: 01/20/2023]
Abstract
This study aimed to assess the time-course of changes in multidimensional fatigue and functional exercise capacity and their associations during an inpatient pulmonary rehabilitation (PR) program. Seventy COPD patients from three centres were enrolled for a four-week PR program and were evaluated before (T0) and at the end of each week (T1, T2, T3, and T4). Weekly change in multidimensional fatigue was assessed by the multidimensional inventory questionnaire (MFI-20) and functional exercise capacity by the 6-minute walking distance (6MWD). Reaction time (RT) and heart rate variability (HRV) were also assessed as complementary markers of fatigue. HRV did not change during the study (all p > 0.05). MFI-20 score and RT decreased during the first part of the program (p < 0.001) and levelled off at T2 (all p > 0.05 compared with each preceding time). While 6MWD improved by almost 70% during the first part of the PR, it continued to increase, albeit at a greatly reduced pace, between T2 and T4 (p < 0.05). In parallel, a negative association was found between MFI-20 score and 6MWD at each evaluation time (r ranged from 0.43 to 0.71), with a significantly stronger T3 correlation compared with the other time periods (all p < 0.05). The strengthening of the association between fatigue and functional exercise capacity at T3, which occurred concomitantly with the slowdown of functional exercise capacity improvement, is consistent with a role for fatigue in the limitation of performance changes during PR. The limitation of fatigue during PR is thus an interesting aspect to improve the magnitude of performance changes.
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Affiliation(s)
- François Alexandre
- Direction de la recherche clinique et de l'innovation en Santé, Korian, Lodève, France
| | - Virginie Molinier
- Direction de la recherche clinique et de l'innovation en Santé, Korian, Lodève, France
| | - Louis Hognon
- Euromov Digital Health in Motion, University of Montpellier, IMT Mines Ales, Montpellier, France
| | | | | | | | - Thomas Henry
- Clinique du Souffle Les Clarines, Korian, Riom-ès-montagne, France
| | | | | | | | - Nicolas Oliver
- Direction de la recherche clinique et de l'innovation en Santé, Korian, Lodève, France.,Clinique du Souffle La Vallonie, Korian, Lodève, France
| | - Nelly Heraud
- Direction de la recherche clinique et de l'innovation en Santé, Korian, Lodève, France
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Romanchuk O. Cardiorespiratory dynamics during respiratory maneuver in athletes. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3. [DOI: https:/doi.org/10.3389/fnetp.2023.1276899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Introduction: The modern practice of sports medicine and medical rehabilitation requires the search for subtle criteria for the development of conditions and recovery of the body after diseases, which would have a prognostic value for the prevention of negative effects of training and rehabilitation tools, and also testify to the development and course of mechanisms for counteracting pathogenetic processes in the body. The purpose of this study was to determine the informative directions of the cardiorespiratory system parameters dynamics during the performing a maneuver with a change in breathing rate, which may indicate the body functional state violation.Methods: The results of the study of 183 healthy men aged 21.2 ± 2.3 years who regularly engaged in various sports were analyzed. The procedure for studying the cardiorespiratory system included conducting combined measurements of indicators of activity of the respiratory and cardiovascular systems in a sitting position using a spiroarteriocardiograph device. The duration of the study was 6 min and involved the sequential registration of three measurements with a change in breathing rate (spontaneous breathing, breathing at 0.1 Hz and 0.25 Hz).Results: Performing a breathing maneuver at breathing 0.1 Hz and breathing 0.25 Hz in comparison with spontaneous breathing leads to multidirectional significant changes in heart rate variability indicators–TP (ms2), LF (ms2), LFHF (ms2/ms2); of blood pressure variability indicators–TPDBP (mmHg2), LFSBP (mmHg2), LFDBP (mmHg2), HFSBP (mmHg2); of volume respiration variability indicators - LFR, (L×min-1)2; HFR, (L×min-1)2; LFHFR, (L×min-1)2/(L×min-1)2; of arterial baroreflex sensitivity indicators - BRLF (ms×mmHg-1), BRHF (ms×mmHg-1). Differences in indicators of systemic hemodynamics and indicators of cardiovascular and respiratory systems synchronization were also informative.Conclusion: According to the results of the study, it is shown that during performing a breathing maneuver with a change in the rate of breathing, there are significant changes in cardiorespiratory parameters, the analysis of which the increments made it possible to determine of the changes directions dynamics, their absolute values and informative limits regarding the possible occurrence of the cardiorespiratory interactions dysregulation.
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5
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Romanchuk O. Cardiorespiratory dynamics during respiratory maneuver in athletes. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3:1276899. [PMID: 38020241 PMCID: PMC10643240 DOI: 10.3389/fnetp.2023.1276899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023]
Abstract
Introduction: The modern practice of sports medicine and medical rehabilitation requires the search for subtle criteria for the development of conditions and recovery of the body after diseases, which would have a prognostic value for the prevention of negative effects of training and rehabilitation tools, and also testify to the development and course of mechanisms for counteracting pathogenetic processes in the body. The purpose of this study was to determine the informative directions of the cardiorespiratory system parameters dynamics during the performing a maneuver with a change in breathing rate, which may indicate the body functional state violation. Methods: The results of the study of 183 healthy men aged 21.2 ± 2.3 years who regularly engaged in various sports were analyzed. The procedure for studying the cardiorespiratory system included conducting combined measurements of indicators of activity of the respiratory and cardiovascular systems in a sitting position using a spiroarteriocardiograph device. The duration of the study was 6 min and involved the sequential registration of three measurements with a change in breathing rate (spontaneous breathing, breathing at 0.1 Hz and 0.25 Hz). Results: Performing a breathing maneuver at breathing 0.1 Hz and breathing 0.25 Hz in comparison with spontaneous breathing leads to multidirectional significant changes in heart rate variability indicators-TP (ms2), LF (ms2), LFHF (ms2/ms2); of blood pressure variability indicators-TPDBP (mmHg2), LFSBP (mmHg2), LFDBP (mmHg2), HFSBP (mmHg2); of volume respiration variability indicators - LFR, (L×min-1)2; HFR, (L×min-1)2; LFHFR, (L×min-1)2/(L×min-1)2; of arterial baroreflex sensitivity indicators - BRLF (ms×mmHg-1), BRHF (ms×mmHg-1). Differences in indicators of systemic hemodynamics and indicators of cardiovascular and respiratory systems synchronization were also informative. Conclusion: According to the results of the study, it is shown that during performing a breathing maneuver with a change in the rate of breathing, there are significant changes in cardiorespiratory parameters, the analysis of which the increments made it possible to determine of the changes directions dynamics, their absolute values and informative limits regarding the possible occurrence of the cardiorespiratory interactions dysregulation.
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Affiliation(s)
- Oleksandr Romanchuk
- Department of Medical Rehabilitation, Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine, Odesa, Ukraine
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Petracek LS, Eastin EF, Rowe IR, Rowe PC. Orthostatic intolerance as a potential contributor to prolonged fatigue and inconsistent performance in elite swimmers. BMC Sports Sci Med Rehabil 2022; 14:139. [PMID: 35870963 PMCID: PMC9308026 DOI: 10.1186/s13102-022-00529-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 07/13/2022] [Indexed: 11/17/2022] Open
Abstract
Background Athletic underperformance is characterized by fatigue and an inability to sustain a consistent exercise workload. We describe five elite swimmers with prolonged fatigue and athletic underperformance. Based on our work in myalgic encephalomyelitis /chronic fatigue syndrome, we focused on orthostatic intolerance as a possible contributor to symptoms. Methods Participants were referred for evaluation of fatigue and underperformance to the Chronic Fatigue Clinic at the Johns Hopkins Children’s Center. All patients were evaluated for overtraining syndrome, as well as for features commonly seen in myalgic encephalomyelitis/chronic fatigue syndrome. The latter included joint hypermobility, orthostatic intolerance, and non-IgE mediated milk protein intolerance. Orthostatic intolerance was tested by performing a ten-minute passive standing test or a head-up tilt table test. Results Orthostatic testing provoked fatigue and other symptoms in all five swimmers, two of whom met heart rate criteria for postural tachycardia syndrome. Treatment was individualized, primarily consisting of an increased intake of sodium chloride and fluids to address orthostasis. All patients experienced a relatively prompt improvement in fatigue and other orthostatic symptoms and were able to either return to their expected level of performance or improve their practice consistency. Conclusions Orthostatic intolerance was an easily measured and treatable contributor to athletic underperformance in the five elite swimmers we describe. We suggest that passive standing tests or formal tilt table tests be incorporated into the clinical evaluation of athletes with fatigue and underperformance as well as into scientific studies of this topic. Recognition and treatment of orthostatic intolerance provides a new avenue for improving outcomes in underperforming athletes.
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Blood pressure variability and plasma Alzheimer's disease biomarkers in older adults. Sci Rep 2022; 12:17197. [PMID: 36229634 PMCID: PMC9561652 DOI: 10.1038/s41598-022-20627-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 09/15/2022] [Indexed: 01/06/2023] Open
Abstract
Blood pressure variability is an emerging risk factor for Alzheimer's disease in older adults, independent of average blood pressure levels. Growing evidence suggests increased blood pressure variability is linked to Alzheimer's disease pathophysiology indexed by cerebrospinal fluid and positron emission tomography markers, but relationships with plasma Alzheimer's disease markers have not been investigated. In this cross-sectional study of 54 community-dwelling older adults (aged 55-88, mean age 69.9 [8.2 SD]), elevated blood pressure variability over 5 min was associated with lower levels of plasma Aβ1-42 (standardized ß = - 0.36 [95% CI - 0.61, - 0.12]; p = 0.005; adjusted R2 = 0.28) and Aβ1-42: Aβ1-40 ratio (ß = - 0.49 [95% CI - 0.71, - 0.22]; p < 0.001; adjusted R2 = 0.28), and higher levels of total tau (ß = 0.27 [95% CI 0.01, 0.54]; p = 0.04; adjusted R2 = 0.19) and Ptau181:Aβ1-42 ratio (ß = 0.26 [95% CI 0.02, 0.51]; p = 0.04; adjusted R2 = 0.22). Findings suggest higher blood pressure variability is linked to plasma biomarkers of increased Alzheimer's disease pathophysiology.
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8
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The effects of dynamic and static stretching exercises performed to elite wrestlers after high intensity exercise on heart rate variability. Sci Sports 2022. [DOI: 10.1016/j.scispo.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Abreu RMD, Porta A, Rehder-Santos P, Cairo B, Sakaguchi CA, da Silva CD, Signini ÉDF, Milan-Mattos JC, Catai AM. Cardiorespiratory coupling strength in athletes and non-athletes. Respir Physiol Neurobiol 2022; 305:103943. [PMID: 35835289 DOI: 10.1016/j.resp.2022.103943] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/21/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Despite the relevant presence of nonlinear components on heart period (HP) likely due to cardiorespiratory coupling (CRC), the HP is frequently analyzed in absence of concomitant recordings of respiratory movements (RESP). This study aims to assess the cardiovascular dynamics and CRC during postural challenge in athletes and non-athletes via joint symbolic analysis (JSA). METHODS A cross-sectional study was conducted in 50 men, aged between 20 and 40 yrs, divided into athletes (n = 25) and non-athletes (n = 25) groups. The electrocardiogram, blood pressure and RESP signals were recorded during 15 min in both supine position (REST) and after active postural maneuver (STAND). From the beat-to-beat series of HP, systolic arterial pressure (SAP) and RESP, we computed the time and frequency domain indexes and baroreflex sensitivity. The JSA was based on the definition of symbolic HP and RESP patterns and on the evaluation of the rate of their simultaneous occurrence in both HP and RESP series. RESULTS The JSA analysis was able to identify higher CRC strength at REST in athletes. Moreover, the response of CRC to STAND depended on the time scales of the analysis and was much more evident in athletes than in non-athletes, thus indicating a more reactive autonomic control in athletes. CONCLUSION Assessing CRC in athletes via JSA provides additional information compared to standard linear time and frequency domain tools likely due to the more relevant presence of nonlinearities in HP-RESP variability relationship.
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Affiliation(s)
- Raphael Martins de Abreu
- LUNEX University, International University of Health, Exercise & Sports S.A. 50, Department of Physiotherapy, Differdange, Luxembourg; LUNEX ASBL Luxembourg Health & Sport Sciences Research Institute, Differdange, Luxembourg; Federal University of São Carlos, Department of Physical Therapy, São Carlos, São Paulo, Brazil.
| | - Alberto Porta
- University of Milan, Department of Biomedical Sciences for Health, Milan, Italy; IRCCS Policlinico San Donato, Department of Cardiothoracic, Vascular Anesthesia and Intensive Care, San Donato Milanese, Milan, Italy
| | - Patricia Rehder-Santos
- Federal University of São Carlos, Department of Physical Therapy, São Carlos, São Paulo, Brazil
| | - Beatrice Cairo
- University of Milan, Department of Biomedical Sciences for Health, Milan, Italy
| | - Camila Akemi Sakaguchi
- Appalachian State University, Department of Health, Leisure, and Exercise Science, NC, USA
| | | | - Étore De Favari Signini
- Federal University of São Carlos, Department of Physical Therapy, São Carlos, São Paulo, Brazil
| | | | - Aparecida Maria Catai
- Federal University of São Carlos, Department of Physical Therapy, São Carlos, São Paulo, Brazil
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Lapo HM, Chacon-Mikahil MPT, Sardeli AV. Pre-competitive overload period impairs parasympathetic modulation in athletes: A systematic review and meta-analysis. Physiol Behav 2022; 250:113780. [PMID: 35305986 DOI: 10.1016/j.physbeh.2022.113780] [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: 01/06/2022] [Revised: 03/04/2022] [Accepted: 03/15/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The aim was to meta-analyze the effect of different type of overloads on parasympathetic modulation to the heart, assessed by root-mean-square difference of successive normal RR intervals (RMSSD) of athletes. METHODS The analysis of the 14 studies selected (20 subgroups within studies), compared RMSSD of the same athletes before and after an overload period. RESULTS RMSSD of athletes were lower at pre-competition compared to baseline (SMD = -0.50 [-0.83; -0.18], p = 0.002), while volume, volume plus intensity and post-competition overloads showed similar RMSSD than their respective normal load periods. CONCLUSION The lower RMSSD during pre-competition overload, characterize an loss of homeostasis, and could be explained by the presence of pre-competition anxiety, stress, and higher psychological challenges in addition to the same physical stress present in the other types of overloads (i.e.: higher volume or training intensity).
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Affiliation(s)
- Henrique Monteiro Lapo
- Laboratory of Exercise Physiology, Scholl of Physical Education, University of Campinas SP, Brazil
| | - Mara Patrícia Traina Chacon-Mikahil
- Laboratory of Exercise Physiology, Scholl of Physical Education, University of Campinas SP, Brazil; Graduate Program in Gerontology- Scholl of Medical Sciences, University of Campinas, SP, Brazil
| | - Amanda Veiga Sardeli
- Laboratory of Exercise Physiology, Scholl of Physical Education, University of Campinas SP, Brazil; Graduate Program in Gerontology- Scholl of Medical Sciences, University of Campinas, SP, Brazil; MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom; NIHR Birmingham Biomedical Research Centre, University Hospital Birmingham and University of Birmingham, Birmingham, United Kingdom.
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11
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Souza HCD, Philbois SV, Veiga AC, Aguilar BA. Heart Rate Variability and Cardiovascular Fitness: What We Know so Far. Vasc Health Risk Manag 2021; 17:701-711. [PMID: 34803382 PMCID: PMC8598208 DOI: 10.2147/vhrm.s279322] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/05/2021] [Indexed: 12/15/2022] Open
Abstract
Fluctuation analysis in intervals between heartbeats provides important indices related to autonomic modulation of heart rate variability (HRV). These indices are considered predictors of morbidity and mortality as they are frequently altered in patients with chronic degenerative diseases, especially in those with cardiovascular and metabolic diseases. Similarly, a reduction in HRV is common with aging. In all cases, cardiovascular fitness is often reduced to below the predicted values. In turn, increases in cardiovascular fitness through regular physical exercise, especially aerobic exercise, represent an important therapeutic tool capable of promoting positive adjustments in cardiac autonomic modulation. These adjustments are characterized by reduced sympathetic modulatory influence and/or increased vagal modulatory influence on the heart, increasing the HRV. Therefore, several methodological tools have been used to assess the degree of impairment of autonomic modulation and the therapeutic effects of physical exercise. In contrast, establishment of strict protocols in experimental design is a main challenge in establishing HRV analysis as a robust parameter for evaluating cardiovascular homeostasis. Thus, this review aimed to contribute to the understanding of autonomic modulation of HRV and its relationship with cardiovascular fitness, highlighting the advances made thus far, the applicability of analysis tools, and the confounding factors observed frequently.
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Affiliation(s)
- Hugo Celso Dutra Souza
- Department of Health Science, Ribeirão Preto Medical School of University of São Paulo, São Paulo, Brazil
| | - Stella Vieira Philbois
- Department of Health Science, Ribeirão Preto Medical School of University of São Paulo, São Paulo, Brazil
| | - Ana Catarine Veiga
- Department of Health Science, Ribeirão Preto Medical School of University of São Paulo, São Paulo, Brazil
| | - Bruno Augusto Aguilar
- Department of Health Science, Ribeirão Preto Medical School of University of São Paulo, São Paulo, Brazil
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12
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Heusser K, Heusser R, Jordan J, Urechie V, Diedrich A, Tank J. Baroreflex Curve Fitting Using a WYSIWYG Boltzmann Sigmoidal Equation. Front Neurosci 2021; 15:697582. [PMID: 34658756 PMCID: PMC8519000 DOI: 10.3389/fnins.2021.697582] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/31/2021] [Indexed: 11/13/2022] Open
Abstract
Arterial baroreflex assessment using vasoactive substances enables investigators to collect data pairs over a wide range of blood pressures and reflex reactions. These data pairs relate intervals between heartbeats or sympathetic neural activity to blood pressure values. In an X-Y plot the data points scatter around a sigmoidal curve. After fitting the parameters of a sigmoidal function to the data, the graph’s characteristics represent a rather comprehensive quantitative reflex description. Variants of the 4-parameter Boltzmann sigmoidal equation are widely used for curve fitting. Unfortunately, their ‘slope parameters’ do not correspond to the graph’s actual slope which complicates the analysis and bears the risk of misreporting. We propose a modified Boltzmann sigmoidal function with preserved goodness of fit whose parameters are one-to-one equivalent to the sigmoidal curve’s characteristics.
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Affiliation(s)
- Karsten Heusser
- Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany
| | | | - Jens Jordan
- Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany.,University of Cologne, Cologne, Germany
| | - Vasile Urechie
- Division of Clinical Pharmacology, Department of Medicine, Autonomic Dysfunction Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - André Diedrich
- Division of Clinical Pharmacology, Department of Medicine, Autonomic Dysfunction Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Jens Tank
- Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany
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Nishida M, Yamamoto K, Murata Y, Ichinose A, Shioda K. Exploring the Effect of Long Naps on Handball Performance and Heart Rate Variability. Sports Med Int Open 2021; 5:E73-E80. [PMID: 34541302 PMCID: PMC8443333 DOI: 10.1055/a-1551-8054] [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: 05/28/2021] [Accepted: 07/12/2021] [Indexed: 12/02/2022] Open
Abstract
This study explored the effect of long naps on handball-related performance and assessed the role of the cardiac autonomic nervous system in this process. Eleven male collegiate handball players performed a repeated sequential trial consisting of a 20-m consecutive turnaround run, 10-m run with a load, and shooting the ball into a target. Participants were allocated randomly and sequentially to have a short (20 minutes) nap, long (60 minutes) nap, or no nap. The Pittsburgh Sleep Quality Index was used to assess regular sleep quality. Subjective sleepiness before and after napping was measured using the Karolinska Sleepiness Scale. Heart rate variability was recorded to assess cardiac autonomic nervous function during napping. The Pittsburgh Sleep Quality Index score was correlated with shot accuracy only after long naps (ρ=0.636, r=0.048). A negative correlation was observed between the root mean square of successive differences and average load run time (ρ=−0.929, p<0.001). Long napping was associated with a significant benefit on performance in athletes with poor sleep quality, implying a role of the autonomic nervous system in this regard. Our findings indicate the effect of sleep quality on the endurance and resistance of handball players.
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Affiliation(s)
- Masaki Nishida
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.,Sleep Research Institute, Waseda University, Shinjuku-ku, Japan
| | - Kei Yamamoto
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Yusuke Murata
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.,Sleep Research Institute, Waseda University, Shinjuku-ku, Japan
| | - Atsushi Ichinose
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.,Sleep Research Institute, Waseda University, Shinjuku-ku, Japan
| | - Kohei Shioda
- Sleep Research Institute, Waseda University, Shinjuku-ku, Japan.,Faculty of Human Sciences, Kanazawa Seiryo University, Kanazawa, Japan
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Meylan CMP, Bowman K, Stellingwerff T, Pethick WA, Trewin J, Koehle MS. The Efficacy of Heat Acclimatization Pre-World Cup in Female Soccer Players. Front Sports Act Living 2021; 3:614370. [PMID: 34113844 PMCID: PMC8185056 DOI: 10.3389/fspor.2021.614370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 04/06/2021] [Indexed: 11/25/2022] Open
Abstract
The efficacy of a 14-day field-based heat acclimatization (HA) training camp in 16 international female soccer players was investigated over three phases: phase 1: 8 days moderate HA (22. 1°C); phase 2: 6 days high HA (34.5°C); and phase 3: 11 days of post-HA (18.2°C), with heart rate (HR), training load, core temp (Tc), and perceptual ratings recorded throughout. The changes from baseline (day−16) in (i) plasma volume (PV), (ii) HR during a submaximal running test (HRex) and HR recovery (HRR), and (iii) pre-to-post phase 2 (days 8–13) in a 4v4 small-sided soccer game (4V4SSG) performance were assessed. Due to high variability, PV non-significantly increased by 7.4% ± 3.6% [standardized effect (SE) = 0.63; p = 0.130] from the start of phase 1 to the end of phase 2. Resting Tc dropped significantly [p < 0.001 by −0.47 ± 0.29°C (SE = −2.45)], from day 1 to day 14. Submaximal running HRR increased over phase 2 (HRR; SE = 0.53) after having decreased significantly from baseline (p = 0.03). While not significant (p > 0.05), the greatest HR improvements from baseline were delayed, occurring 11 days into phase 3 (HRex, SE = −0.42; HRR, SE = 0.37). The 4v4SSG revealed a moderate reduction in HRex (SE = −0.32; p = 0.007) and a large increase in HRR (SE = 1.27; p < 0.001) from pre-to-post phase 2. Field-based HA can induce physiological changes beneficial to soccer performance in temperate and hot conditions in elite females, and the submaximal running test appears to show HRex responses induced by HA up to 2 weeks following heat exposure.
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Affiliation(s)
- César M P Meylan
- Physical Performance Department, Canada Soccer, Ottawa, ON, Canada.,Division of Sports Medicine and School of Kinesiology, University of British Columbia, Vancouver, BC, Canada.,Canadian Sport Institute Pacific, Victoria, BC, Canada
| | - Kimberly Bowman
- Division of Sports Medicine and School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
| | - Trent Stellingwerff
- Division of Sports Medicine and School of Kinesiology, University of British Columbia, Vancouver, BC, Canada.,Canadian Sport Institute Pacific, Victoria, BC, Canada
| | | | - Joshua Trewin
- Physical Performance Department, Canada Soccer, Ottawa, ON, Canada.,Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - Michael S Koehle
- Division of Sports Medicine and School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
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15
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Manresa-Rocamora A, Flatt AA, Casanova-Lizón A, Ballester-Ferrer JA, Sarabia JM, Vera-Garcia FJ, Moya-Ramón M. Heart rate-based indices to detect parasympathetic hyperactivity in functionally overreached athletes. A meta-analysis. Scand J Med Sci Sports 2021; 31:1164-1182. [PMID: 33533045 DOI: 10.1111/sms.13932] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/24/2020] [Accepted: 01/28/2021] [Indexed: 11/29/2022]
Abstract
Investigations into the sensitivity of heart rate-(HR) derived indices for tracking parasympathetic nervous system (PNS) changes in functionally overreached (F-OR) endurance-trained athletes have produced equivocal findings. Lack of clarity may be a result of methodological inconsistencies. Therefore, the aims of this systematic review and meta-analysis were (a) to determine the sensitivity of resting and post-exercise vagal-related HR variability (HRV) and HR recovery (HRR) indices to detect PNS modulation in F-OR and non-overreached (non-OR) athletes, and (b) to investigate the influence of methodological factors on the sensitivity of HR-based indices to detect PNS hyperactivity in F-OR athletes. We searched CENTRAL, Scopus, PubMed, Embase, and Web of Science up to May 2020 for the following terms: male and female endurance-trained athletes, controlled and uncontrolled studies that carried out an overload training period, and PNS modulation measured in resting and post-exercise, pre- and post-overload training period. A random-effects model of standardized mean difference (SMD) was estimated for each outcome measure based on the training-induced fatigue status (F-OR vs non-OR athletes), and the influence of methodological issues to detect PNS hyperactivity in F-OR was assessed by subgroup analyses. Pooled analysis showed that resting vagal-related HRV indices did not detect PNS hyperactivity in F-OR athletes (SMD+ = -0.01; 95% confidence interval [CI] = -0.51, 0.50), and no statistical difference (P = .600) was found with non-OR athletes (SMD+ = 0.15; 95% CI = -0.14, 0.45). However, subgroup analysis based on HRV parameter showed a moderate statistical increase in weekly averaged HRV in F-OR athletes (SMD+ = 0.81; 95% CI = 0.35, 1.26), while isolated HRV values did not reach statistical significance (SMD+ = -0.45; 95% CI = -0.96, 0.06). We observed a moderate and statistically significant increase in HRR indices among F-OR athletes (SMD+ = 0.65; 95% CI = 0.44, 0.87), no changes for non-OR athletes (SMD+ = 0.10; 95% CI = -0.15, 0.34), and statistically significant differences between F-OR and non-OR athletes (P < .001). Insufficient data prevented meta-analysis for post-exercise vagal-related HRV indices. Our findings show that when methodological factors are considered, HR-based indices are sensitive to increased PNS modulation in F-OR.
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Affiliation(s)
- Agustín Manresa-Rocamora
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain
| | - Andrew A Flatt
- Department of Health Sciences and Kinesiology, Georgia Southern University, Georgia, USA
| | - Antonio Casanova-Lizón
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain
| | - Juan A Ballester-Ferrer
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain
| | - José M Sarabia
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain.,Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Miguel Hernandez University, Alicante, Spain
| | - Francisco J Vera-Garcia
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain
| | - Manuel Moya-Ramón
- Department of Sport Sciences, Sports Research Centre, Miguel Hernández University of Elche, Elche, Spain.,Institute for Health and Biomedical Research (ISABIAL-FISABIO Foundation), Miguel Hernandez University, Alicante, Spain
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16
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Meneghetti HG, Souza GCD, Santos JGF, Morales MDSB, Martins RADM, Ferreira GD. O uso da análise da variabilidade da frequência cardíaca no monitoramento de lesões esportivas e sua influência sobre o balanço autonômico: uma revisão sistemática. FISIOTERAPIA E PESQUISA 2021. [DOI: 10.1590/1809-2950/20022228032021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO O objetivo desta revisão busca compreender o uso da variabilidade da frequência cardíaca (VFC) para identificar sua relação com a ocorrência de lesões esportivas que não envolvem contato, além de indicar padrões da VFC após concussões para orientar o retorno seguro ao esporte. Foi realizada uma revisão sistemática nas bases de dados Pubmed, EMBASE e PEDRo, incluindo artigos até dezembro de 2020, utilizando os seguintes termos: ((((athletes OR players) AND (Heart Hate Variability OR HRV)) AND (sport OR sports OR exercises OR physical activity)) AND (injuries OR injury)). Os princípios de elegibilidade de PICOS foram: P (population): atletas, I (intervention): o uso da VFC, C (control): atletas não lesionados, O (outcomes): índices de VFC e suas relações com lesões esportivas, e S (study): estudos em seres humanos. De 62 artigos identificados na busca, 12 foram incluídos na revisão, sendo 6 mostrando que a diminuição da VFC e o desequilíbrio simpatovagal estão relacionados à fadiga, overtraining e overreaching; e 6 artigos relacionados com a avaliação da VFC pós-concussão, onde identificaram alteração de modulação autonômica nos atletas concussionados que vão além da ausência dos sintomas. Em conclusão, a VFC pode ser uma ferramenta utilizada no âmbito esportivo para identificar maior risco de lesões esportivas sem contato, identificando situações de fadiga, overtraining e overreaching, como também auxiliar no processo de retorno ao esporte pós-concussão cerebral pela avaliação do balanço autonômico.
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17
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Flatt AA, Allen J, Bragg A, Keith C, Earley R, Esco MR. Heart Rate Variability in College Football Players throughout Preseason Camp in the Heat. Int J Sports Med 2020; 41:589-595. [PMID: 32353883 DOI: 10.1055/a-1145-3754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We aimed to characterize cardiac-autonomic responses to a 13-day preseason camp in the heat among an American college football team. Players were categorized as linemen (n=10) and non-linemen (n=18). RHR, natural logarithm of the root-mean square of successive differences multiplied by twenty (LnRMSSD), and subjective wellbeing (LnWellness) were acquired daily. Effect sizes±90% confidence interval showed that for linemen, LnRMSSD decreased (moderate) on day 2 (71.2±10.4) and increased (moderate) on day 12 (87.1±11.2) relative to day 1 (77.9±11.2) while RHR decreased (small-moderate) on days 6, 7, and 12 (67.7±9.3-70.4±5.5 b∙min-1) relative to day 1 (77.1±10.1 b∙min-1). For non-linemen, LnRMSSD increased (small-large) on days 3-5, 7, 12, and 13 (83.4±6.8-87.6±8.5) relative to day 1 (80.0±6.5) while RHR decreased (small-large) on days 3-9, 12, and 13 (62.1±5.2-67.9±8.1 b∙min-1) relative to day 1 (70.8±6.2 b∙min-1). Decrements in LnWellness were observed on days 4-10 and 13 for linemen (moderate) and on days 6-9, 12, and 13 for non-linemen (small-moderate). Despite reductions in LnWellness, cardiac-autonomic parameters demonstrated responses consistent with heat-acclimation, which possibly attenuated fatigue-related decrements.
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Affiliation(s)
- Andrew A Flatt
- Health Sciences and Kinesiology, Georgia Southern University - Armstrong Campus, Savannah, United States.,Kinesiology, University of Alabama, Tuscaloosa, United States
| | - Jeff Allen
- Athletics, University of Alabama, Tuscaloosa, United States
| | - Amy Bragg
- Biological Sciences, University of Alabama, Tuscaloosa, United States
| | - Clayton Keith
- Biological Sciences, University of Alabama, Tuscaloosa, United States
| | - Ryan Earley
- Biological Sciences, University of Alabama, Tuscaloosa, United States
| | - Michael R Esco
- Athletics, University of Alabama, Tuscaloosa, United States
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18
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Abreu RM, Catai AM, Cairo B, Rehder-Santos P, Maria BD, Vaini E, Bari V, Porta A. Assessment of the Coupling Strength of Cardiovascular Control via Joint Symbolic Analysis during Postural Challenge in Recreational Athletes. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:2011-2014. [PMID: 31946295 DOI: 10.1109/embc.2019.8857213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Short-term cardiovascular control, comprising cardiac baroreflex and mechanisms governing cardiac contractility and vascular properties, links heart period (HP) and systolic arterial pressure (SAP) fluctuations. It is activated during postural challenge and this activation is traditionally quantified via linear tools such as HP-SAP squared coherence function. In this study the ability of a nonlinear bivariate tool based on joint symbolic analysis (JSA) approach was tested against HP-SAP coherence function during orthostatic challenge in recreational athletes. We studied 9 men healthy cycling practitioners (age: 20-40 yrs) at rest in supine condition (REST) and during active standing (STAND). The JSA method is based on the definition of symbolic HP and SAP patterns and on the evaluation of the rate of their simultaneous occurrence in both HP and SAP series. HP-SAP squared coherence was computed in the low frequency band (LF, from 0.04 to 0.15 Hz). We found the expected response to the postural stimulus, namely the increase of sympathetic modulation and the contemporaneous vagal withdrawal. However, only JSA was able to detect the expected increase of association between HP and SAP variability series over slow time scales. This result suggests that recreational athletes have more relevant nonlinear interactions between HP and SAP that might be missed by traditional linear tools and might require nonlinear tools to be efficiently described.
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19
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Vacher P, Filaire E, Mourot L, Nicolas M. Stress and recovery in sports: Effects on heart rate variability, cortisol, and subjective experience. Int J Psychophysiol 2019; 143:25-35. [DOI: 10.1016/j.ijpsycho.2019.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 10/26/2022]
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20
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Dalla Vecchia LA, Barbic F, De Maria B, Cozzolino D, Gatti R, Dipaola F, Brunetta E, Zamuner AR, Porta A, Furlan R. Can strenuous exercise harm the heart? Insights from a study of cardiovascular neural regulation in amateur triathletes. PLoS One 2019; 14:e0216567. [PMID: 31063482 PMCID: PMC6504093 DOI: 10.1371/journal.pone.0216567] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/23/2019] [Indexed: 01/10/2023] Open
Abstract
Regular exercise is recommended to improve the cardiovascular risk profile. However, there is growing evidence that extreme volumes and intensity of long-term exertion may increase the risk of acute cardiac events. The aim of this study is to investigate the after-effects of regular, strenuous physical training on the cardiovascular neural regulation in a group of amateur triathletes compared to age-matched sedentary controls. We enrolled 11 non-elite triathletes (4 women, age 24±4 years), who had refrained from exercise for 72 hours, and 11 age-matched healthy non-athletes (3 women, age 25±2 years). Comprehensive echocardiographic and cardiopulmonary exercise tests were performed at baseline. Electrocardiogram, non-invasive blood pressure, respiratory activity, and muscle sympathetic nerve activity (MSNA) were continuously recorded in a supine position (REST) and during an incremental 15° step-wise head-up tilt test up to 75° (TILT). Blood samples were collected for determination of stress mediators. Autoregressive spectral analysis provided the indices of the cardiac sympathetic (LFRR) and vagal (HFRR) activity, the vascular sympathetic control (LFSAP), and the cardiac sympatho-vagal modulation (LF/HF). Compared to controls, triathletes were characterized by greater LFRR, LF/HF ratio, LFSAP, MSNA, and lower HFRR at REST and during TILT, i.e. greater overall cardiovascular sympathetic modulation together with lower cardiac vagal activity. Cortisol and adrenocorticotropic hormone concentrations were also higher in triathletes. In conclusion, triathletes were characterized by signs of sustained cardiovascular sympathetic overactivity. This might represent a risk factor for future cardiovascular events, given the known association between chronic excessive sympathetic activity and increased cardiovascular risk.
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Affiliation(s)
| | - Franca Barbic
- Humanitas Clinical and Research Center, Humanitas University, Rozzano, Milan, Italy
| | | | - Domenico Cozzolino
- Department of Internal Medicine, University of Campania "L. Vanvitelli”, Napoli, Italy
| | - Roberto Gatti
- Humanitas Clinical and Research Center, Humanitas University, Rozzano, Milan, Italy
| | - Franca Dipaola
- Humanitas Clinical and Research Center, Humanitas University, Rozzano, Milan, Italy
| | - Enrico Brunetta
- Humanitas Clinical and Research Center, Humanitas University, Rozzano, Milan, Italy
| | | | - Alberto Porta
- Department of Cardiothoracic, Vascular Anesthesia and Intensive Care, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Raffaello Furlan
- Humanitas Clinical and Research Center, Humanitas University, Rozzano, Milan, Italy
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21
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Porras-Alvarez J, Bernal-Calderón MO. Variabilidad de la frecuencia cardiaca: evaluación del entrenamiento deportivo. Revisión de tema. DUAZARY 2019. [DOI: 10.21676/2389783x.2750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
La variabilidad de la frecuencia cardiaca es un método no invasivo para evaluar la respuesta del sistema nervioso autónomo sobre el sistema cardiovascular, evalúa la capacidad de recuperación del sistema cardiovascular como respuesta al ejercicio físico. El análisis de los índices de la variabilidad de la frecuencia cardiaca refleja la respuesta autonómica cardiovascular a las diferentes cargas de entrenamiento. Esta revisión temática muestra las conclusiones y los protocolos de evaluación utilizados para controlar y evaluar el entrenamiento en atletas. La variabilidad de la frecuencia cardiaca fue analizada por los métodos de dominio tiempo y frecuencia. La búsqueda se realizó en las bases de datos de SCOPUS, PubMed y el motor de búsqueda google académico, utilizando las palabras clave “heart rate variability” “athletes”, “cardiac autonomic modulations”. Los artículos seleccionados tuvieron como población objeto de estudio atletas de nivel competitivo de diferentes deportes. En conclusión, La evaluación de la Variabilidad de la frecuencia cardiaca permite determinar la adaptación o inadaptación a las cargas de entrenamiento, programar el volumen y la intensidad adecuada de la carga de entrenamiento, supervisar el rendimiento a lo largo de los periodos de entrenamiento y monitorear el estado de forma deportiva durante los campeonatos en todos los deportes.
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22
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Dose-response relationship between very vigorous physical activity and cardiovascular health assessed by heart rate variability in adults: Cross-sectional results from the EPIMOV study. PLoS One 2019; 14:e0210216. [PMID: 30703127 PMCID: PMC6354985 DOI: 10.1371/journal.pone.0210216] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
The minimum amount of physical activity needed to obtain health benefits has been widely determined. Unlikely, the impact of extreme amounts of very vigorous physical activity (VVPA, ≥ 8 metabolic equivalents) to the heart remains controversial. We aimed to evaluate the dose-response relationship between VVPA and heart rate variability (HRV) in adults. We selected 1040 asymptomatic individuals (60% women, 42 ± 15 years, 28 ± 6 kg/m2) from the Epidemiology and Human Movement Study (EPIMOV). Participants remained in the supine position for 10 min, and we selected an intermediate 5-min window for HRV analysis. The standard deviation of the RR intervals, root mean square of RR intervals, successive RR intervals that differ > 50 ms, powers of the low-and high-frequency bands and Poincaré plot standard deviations were quantified. Participants used a triaxial accelerometer (Actigraph GT3x+) above the dominant hip for 4-7 consecutive days for quantifying their physical activity. We also evaluated the maximum oxygen uptake ([Formula: see text]) during an exercise test. We stratified participants into five groups according to the VVPA in min/week (group 1, ≤ 1.50; 2, 1.51-3.16; 3, 3.17-3.54; 4, 3.55-20.75; and 5, > 20.75). The linear trends of the HRV through the quintiles of VVPA were investigated. We used logarithmic transformations to compare the five groups adjusted for age, sex, cardiovascular risk, and [Formula: see text]. We found a better HRV with increased VVPA for all HRV indices studied (p trend < 0.05). However, group 5 did not differ from group 4 (p > 0.05) for none of the indices. We conclude that there is an incremental benefit of VVPA on HRV of asymptomatic adults. Since we found neither additional benefits nor the harmful impact of amounts of VVPA as high as 22 min/week on HRV, our results should not discourage asymptomatic adults to perform VVPA.
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23
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Le Fur Bonnabesse A, Cabon M, L’Heveder G, Kermarrec A, Quinio B, Woda A, Marchand S, Dubois A, Giroux-Metges MA, Rannou F, Misery L, Bodéré C. Impact of a specific training programme on the neuromodulation of pain in female patient with fibromyalgia (DouFiSport): a 24-month, controlled, randomised, double-blind protocol. BMJ Open 2019; 9:e023742. [PMID: 30782715 PMCID: PMC6352822 DOI: 10.1136/bmjopen-2018-023742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION The main symptom of fibromyalgia (FM) is diffuse pain. There is currently no aetiological treatment for FM. However, all pain associations and best practice guidelines strongly advocate the practice of aerobic physical activity to improve the symptoms of FM subjects. The mechanisms of dysfunctional pain are mostly central and related to stress axis dysfunction (autonomic nervous system and corticotropic axis). Our main objective is to assess the efficacy of a specific training programme on endogenous pain control mechanisms in female patients with FM. Further aims include rebalancing the autonomic neurovegetative system, improving quality of life and sleep quality, and reintegrating patients into society and work. METHODS AND ANALYSIS 110 female patients with FM diagnosed on American College of Rheumatology 2010 criteria, aged 18-65 years and meeting inclusion conditions will be recruited and randomised into two groups (active and semiactive). The training programme will consist of three 45 min sessions per week of supervised, individualised physical activity over 2 years. Only the intensity of the exercises will differ between the two groups (moderate intensity vs low intensity).All outcome measures will be conducted at baseline (T0), after 6-9 months of training (T6-9) and after 24 months of training (T24). The primary endpoint will be an improvement of pain modulation (activation of diffuse noxious inhibitory control) evaluated by the stimulation test. The secondary endpoint will be relief of pain, anxiety, depression, stress, sleep disorders, pain impact on life quality, and improved heart rate, blood pressure and salivary cortisol. ETHICS AND DISSEMINATION This study is approved by the Committee for the Protection of Persons West VI. The results will be published in specialised scientific journals and will be presented at scientific meetings on pain and/or physical activity. TRIAL REGISTRATION NUMBER NCT02486965; Pre-results.
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Affiliation(s)
- Anais Le Fur Bonnabesse
- LIEN, EA4685, University of Western Brittany (UBO), Brest, France
- Pain Assessment and Treatment Centre, University Hospital of Brest, Brest, France
- Dental Faculty, University of Western Brittany (UBO), Brest, France
| | - Mathilde Cabon
- LIEN, EA4685, University of Western Brittany (UBO), Brest, France
| | - Gildas L’Heveder
- Neurological Functional Explorations, University Hospital of Brest, Brest, France
| | - Aurélie Kermarrec
- Physiotherapy Training Institute, University Hospital of Brest, Brest, France
| | - Bertrand Quinio
- Pain Assessment and Treatment Centre, University Hospital of Brest, Brest, France
| | - Alain Woda
- Odontology Department, University Clermont Auvergne, CROC and Teaching Hospital EA3847, Clermont-Ferrand, France
| | - Serge Marchand
- Department of Surgery, Universite de Sherbrooke Faculte de Medecine et des Sciences de la Sante, Sherbrooke, Quebec, Canada
| | - Amandine Dubois
- LIEN, EA4685, University of Western Brittany (UBO), Brest, France
- Cognition, Behaviour, Communication (LP3C), EA1285, Laboratoire de Psychologie, Rennes, France
- Département de Psychologie, University of Western Brittany (UBO), Brest, France
| | - Marie-Agnes Giroux-Metges
- ORPHY EA4324, Optimisation of Physiological Regulations, EA4324, Faculty of Medicine and Health Sciences, University of Western Brittany (UBO), Brest, France
- Respiratory Functional Exploration Unit, University Hospital of Brest, Brest, France
| | - Fabrice Rannou
- ORPHY EA4324, Optimisation of Physiological Regulations, EA4324, Faculty of Medicine and Health Sciences, University of Western Brittany (UBO), Brest, France
- Respiratory Functional Exploration Unit, University Hospital of Brest, Brest, France
| | - Laurent Misery
- LIEN, EA4685, University of Western Brittany (UBO), Brest, France
| | - Céline Bodéré
- LIEN, EA4685, University of Western Brittany (UBO), Brest, France
- Pain Assessment and Treatment Centre, University Hospital of Brest, Brest, France
- Dental Faculty, University of Western Brittany (UBO), Brest, France
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24
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Hermann R, Biallas B, Predel HG, Petrowski K. Physical versus psychosocial stress: effects on hormonal, autonomic, and psychological parameters in healthy young men. Stress 2019; 22:103-112. [PMID: 30345865 DOI: 10.1080/10253890.2018.1514384] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
As a time-efficient training system, high intensity interval training (HIIT) is well known for several beneficial effects. However, the literature on the stress-generating effects of HIIT shows a research deficit. A standardized comparable stressor and different kinds of stress-parameters are needed for quantifying the results. The present study examined the hormonal, autonomic, and psychological stress outcomes of HIIT compared to a standardized psychosocial stressor and tested the cross-stressor-adaptation (CSA) hypothesis which implies a stress-buffering effect at a good fitness level. In a sample of 32 healthy young males (24.31 ± 3.35 years of age) stress was induced with a multiple Wingate (WG), as a HIIT all-out performance test, involving four 30 sec all-out exercise bouts. In addition, the Trier Social Stress Test (TSST), which consists of a mock job interview and mental arithmetic performance, was used for stress induction. Cortisol, heart rate variability (HRV), and stress-related questionnaires were assessed before, during, and after stress induction. Both the Wingate as well as the TSST led to a highly significant change in time and stressor for cortisol and HRV. Furthermore, a significantly higher delta during Wingate was identified. In part, the TSST had a significantly higher impact on the psychological measurements than the WG. In contrast to the literature, this study was not able to confirm the stress-buffering effect of the CSA hypothesis. These findings prove the stressful effect of HIIT. The prevention of negative health effects needs to be taken into consideration in sports training methods and programs as well as in stress-related research Lay summary By using a well-estimated psychosocial stressor for comparison and several stress parameters, this study is able to show the strong stress-generating effect of high intensity interval training (HIIT). Interestingly, subjective stress perception differed from objective stress response. This research is an important step towards understanding stress-related disorders in elite sport and making recommendations for reducing autonomic as well as hormonal stress in high intensity sport.
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Affiliation(s)
- Robin Hermann
- a Department of Preventive Research , German Sport University Cologne , Cologne , Germany
| | - Bianca Biallas
- a Department of Preventive Research , German Sport University Cologne , Cologne , Germany
| | - Hans-Georg Predel
- b Department of Cardiology and Sports Medicine , German Sport University Cologne , Cologne , Germany
| | - Katja Petrowski
- c Department of Psychology and Psychotherapie , University of Witten/Herdecke , Witten , Germany
- d Klinik und Poliklinik für Psychotherapie und Psychosomatik , Technische Universität Dresden , Dresden , Germany
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Flatt AA, Esco MR, Nakamura FY. Association between Subjective Indicators of Recovery Status and Heart Rate Variability among Divison-1 Sprint-Swimmers. Sports (Basel) 2018; 6:sports6030093. [PMID: 30208575 PMCID: PMC6162498 DOI: 10.3390/sports6030093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/04/2018] [Accepted: 09/07/2018] [Indexed: 01/27/2023] Open
Abstract
Heart rate variability (HRV) is a physiological marker of training adaptation among athletes. However, HRV interpretation is challenging when assessed in isolation due to its sensitivity to various training and non-training-related factors. The purpose of this study was to determine the association between athlete-self report measures of recovery (ASRM) and HRV throughout a preparatory training period. Ultra-short natural logarithm of the root mean square of successive differences (LnRMSSD) and subjective ratings of sleep quality, fatigue, muscle soreness, stress and mood were acquired daily for 4 weeks among Division-1 sprint-swimmers (n = 17 males). ASRM were converted to z-scores and classified as average (z-score −0.5–0.5), better than average (z-score > 0.5) or worse than average (z-score < −0.5). Linear mixed models were used to evaluate differences in LnRMSSD based on ASRM classifications. LnRMSSD was higher (p < 0.05) when perceived sleep quality, fatigue, stress and mood were better than average versus worse than average. Within-subject correlations revealed that 15 of 17 subjects demonstrated at least one relationship (p < 0.05) between LnRMSSD and ASRM variables. Changes in HRV may be the result of non-training related factors and thus practitioners are encouraged to include subjective measures to facilitate targeted interventions to support training adaptations.
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Affiliation(s)
- Andrew A Flatt
- Department of Health Sciences and Kinesiology, Biodynamics and Human Performance Center, Georgia Southern University, 11935 Abercorn St., Savannah, GA 31419, USA.
| | - Michael R Esco
- Department of Kinesiology, University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Fabio Y Nakamura
- Department of Medicine and Aging Sciences, University of Chieti-Pescara, 66100 Chieti, Italy.
- The College of Healthcare Sciences, James Cook University, Townsville, QLD 4811, Australia.
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Abstract
PURPOSE This study aimed to investigate the impact of mental fatigue on heart rate variability, subjective measures of fatigue, and swimming performance in young athletes. METHODS Sixteen swimmers [15.45 (0.51) y old, 7.35 (2.20) y of swimming experience] performed a 1500-m time trial on 2 occasions separated by an interval of at least 72 hours. The 1500-m swimming was preceded by a 30-minute treatment that consisted of performing the Stroop Color and Word test to induce mental fatigue (experimental trial) or watching an emotionally neutral video (control trial). RESULTS Participants reported higher ratings of mental fatigue and mental effort following the Stroop test when compared with the control trial, but no differences in motivation were observed. The induction of mental fatigue impaired swimming performance, as evidenced by a slower time (1.2%) to complete the 1500-m trial. No intertrial differences were identified for rating of perceived exertion during the swimming test or in heart rate variability after the Stroop and swimming tests. CONCLUSION The results indicate that induction of mental fatigue impairs 1500-m swimming performance without changing heart rate variability.
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Coates AM, INCOGNITO ANTHONYV, SEED JEREMYD, DOHERTY CONNORJ, MILLAR PHILIPJ, BURR JAMIEF. Three Weeks of Overload Training Increases Resting Muscle Sympathetic Activity. Med Sci Sports Exerc 2018; 50:928-937. [DOI: 10.1249/mss.0000000000001514] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bourdillon N, Yazdani S, Nilchian M, Mariano A, Vesin JM, Millet GP. Overload blunts baroreflex only in overreached athletes. J Sci Med Sport 2018; 21:941-949. [PMID: 29397314 DOI: 10.1016/j.jsams.2018.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 01/16/2018] [Accepted: 01/21/2018] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Heart rate variability (HRV) is commonly used to diagnose overreaching and monitor athletes' responses to training. Baroreflex sensitivity (BRS) is modified by changes in training load and might be another means to detect overreaching. The goal of this study was to assess BRS and HRV changes in two groups of athletes responding either negatively (FOR) or positively (AF) to similar training overload. DESIGN Fifteen athletes performed 2-week baseline (BSL) training followed by 3-week overload (+45%; OVL) and 2-week recovery (-20%; RCV). METHODS HRV, training load and subjective fatigue were measured daily via questionnaires. BRS, salivary cortisol and testosterone, and submaximal exercise and maximal 3-km run performances were measured at the end of each period. RESULTS Based on their performance change during OVL, 8 athletes were diagnosed as FOR and 7 as AF. Subjective fatigue was increased in FOR athletes during OVL. BRS increased in AF but not in FOR athletes during RCV. At the end of RCV, cortisol and testosterone were higher than BSL in both groups. CONCLUSIONS Three weeks of similar training overload can induce either performance enhancement or overreaching. The changes in submaximal exercise and maximal performances and in subjective fatigue were the fastest-responding parameters that distinguished the two groups of athletes during OVL. Training overload blunted the increase in BRS in FOR only. Most of the differences in BRS were observed during the recovery period. BRS appears to be a more sensitive parameter than HRV for early monitoring of responses to training.
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Affiliation(s)
- Nicolas Bourdillon
- ISSUL, Institute of Sport Sciences, Faculty of Biology and Medicine, University of Lausanne, Switzerland.
| | - Sasan Yazdani
- ASPG, Applied Signal Processing Group, EPFL, Ecole Polytechnique Fédérale de Lausanne, Switzerland
| | | | - Alessio Mariano
- ISSUL, Institute of Sport Sciences, Faculty of Biology and Medicine, University of Lausanne, Switzerland
| | - Jean-Marc Vesin
- ASPG, Applied Signal Processing Group, EPFL, Ecole Polytechnique Fédérale de Lausanne, Switzerland
| | - Grégoire P Millet
- ISSUL, Institute of Sport Sciences, Faculty of Biology and Medicine, University of Lausanne, Switzerland
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Singh N, Moneghetti KJ, Christle JW, Hadley D, Froelicher V, Plews D. Heart Rate Variability: An Old Metric with New Meaning in the Era of Using mHealth technologies for Health and Exercise Training Guidance. Part Two: Prognosis and Training. Arrhythm Electrophysiol Rev 2018; 7:247-255. [PMID: 30588312 DOI: 10.15420/aer.2018.30.2] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/07/2018] [Indexed: 12/13/2022] Open
Abstract
It has been demonstrated that heart rate variability (HRV) is predictive of all-cause and cardiovascular mortality using clinical ECG recordings. This is true for rest, exercise and ambulatory HRV clinical ECG device recordings in prospective cohorts. Recently, there has been a rapid increase in the use of mobile health technologies (mHealth) and commercial wearable fitness devices. Most of these devices use ECG or photo-based plethysmography and both are validated for providing accurate heart rate measurements. This offers the opportunity to make risk information from HRV more widely available. The physiology of HRV and the available technology by which it can be assessed has been summarised in Part 1 of this review. In Part 2 the association between HRV and risk stratification is addressed by reviewing the current evidence from data acquired by resting ECG, exercise ECG and medical ambulatory devices. This is followed by a discussion of the use of HRV to guide the training of athletes and as a part of fitness programmes.
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Affiliation(s)
- Nikhil Singh
- Department of Medicine, Keck School of Medicine of University of Southern California Los Angeles, CA, USA
| | - Kegan James Moneghetti
- Department of Medicine, St Vincent's Hospital, University of Melbourne Australia.,Division of Cardiovascular Medicine, Department of Medicine, Stanford School of Medicine Stanford, CA, USA
| | - Jeffrey Wilcox Christle
- Division of Cardiovascular Medicine, Department of Medicine, Stanford School of Medicine Stanford, CA, USA
| | | | - Victor Froelicher
- Division of Cardiovascular Medicine, Department of Medicine, Stanford School of Medicine Stanford, CA, USA
| | - Daniel Plews
- Sports Performance Research Institute New Zealand, Auckland University of Technology Auckland, New Zealand
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Assessment of Heart Rate Variability during an Endurance Mountain Trail Race by Multi-Scale Entropy Analysis. ENTROPY 2017. [DOI: 10.3390/e19120658] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Acute and chronic changes in baroreflex sensitivity in hypobaric vs. normobaric hypoxia. Eur J Appl Physiol 2017; 117:2401-2407. [PMID: 28956166 DOI: 10.1007/s00421-017-3726-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 09/21/2017] [Indexed: 12/21/2022]
Abstract
Normobaric hypoxia (NH) is used as a surrogate for hypobaric hypoxia (HH). Recent studies reported physiological differences between NH and HH. Baroreflex sensitivity (BRS) decreases at altitude or following intense training. However, until now no study compared the acute and chronic changes of BRS in NH vs. HH. First, BRS was assessed in 13 healthy male subjects prior and after 20 h of exposure at 3450 m (study 1), and second in 15 well-trained athletes prior and after 18 days of "live-high train-low" (LHTL) at 2250 m (study 2) in NH vs. HH. BRS decreased (p < 0.05) to the same extent in NH and HH after 20 h of hypoxia and after LHTL. These results confirm that altitude decreases BRS but the decrease is similar between HH and NH. The persistence of this decrease after the cessation of a chronic exposure is new and does not differ between HH and NH. The previously reported physiological differences between NH and HH do not appear strong enough to induce different BRS responses.
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Bellenger CR, Fuller JT, Thomson RL, Davison K, Robertson EY, Buckley JD. Monitoring Athletic Training Status Through Autonomic Heart Rate Regulation: A Systematic Review and Meta-Analysis. Sports Med 2017; 46:1461-86. [PMID: 26888648 DOI: 10.1007/s40279-016-0484-2] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Autonomic regulation of heart rate (HR) as an indicator of the body's ability to adapt to an exercise stimulus has been evaluated in many studies through HR variability (HRV) and post-exercise HR recovery (HRR). Recently, HR acceleration has also been investigated. OBJECTIVE The aim of this systematic literature review and meta-analysis was to evaluate the effect of negative adaptations to endurance training (i.e., a period of overreaching leading to attenuated performance) and positive adaptations (i.e., training leading to improved performance) on autonomic HR regulation in endurance-trained athletes. METHODS We searched Ovid MEDLINE, Embase, CINAHL, SPORTDiscus, PubMed, and Academic Search Premier databases from inception until April 2015. Included articles examined the effects of endurance training leading to increased or decreased exercise performance on four measures of autonomic HR regulation: resting and post-exercise HRV [vagal-related indices of the root-mean-square difference of successive normal R-R intervals (RMSSD), high frequency power (HFP) and the standard deviation of instantaneous beat-to-beat R-R interval variability (SD1) only], and post-exercise HRR and HR acceleration. RESULTS Of the 5377 records retrieved, 27 studies were included in the systematic review and 24 studies were included in the meta-analysis. Studies inducing increases in performance showed small increases in resting RMSSD [standardised mean difference (SMD) = 0.58; P < 0.001], HFP (SMD = 0.55; P < 0.001) and SD1 (SMD = 0.23; P = 0.16), and moderate increases in post-exercise RMSSD (SMD = 0.60; P < 0.001), HFP (SMD = 0.90; P < 0.04), SD1 (SMD = 1.20; P = 0.04), and post-exercise HRR (SMD = 0.63; P = 0.002). A large increase in HR acceleration (SMD = 1.34) was found in the single study assessing this parameter. Studies inducing decreases in performance showed a small increase in resting RMSSD (SMD = 0.26; P = 0.01), but trivial changes in resting HFP (SMD = 0.04; P = 0.77) and SD1 (SMD = 0.04; P = 0.82). Post-exercise RMSSD (SMD = 0.64; P = 0.04) and HFP (SMD = 0.49; P = 0.18) were increased, as was HRR (SMD = 0.46; P < 0.001), while HR acceleration was decreased (SMD = -0.48; P < 0.001). CONCLUSIONS Increases in vagal-related indices of resting and post-exercise HRV, post-exercise HRR, and HR acceleration are evident when positive adaptation to training has occurred, allowing for increases in performance. However, increases in post-exercise HRV and HRR also occur in response to overreaching, demonstrating that additional measures of training tolerance may be required to determine whether training-induced changes in these parameters are related to positive or negative adaptations. Resting HRV is largely unaffected by overreaching, although this may be the result of methodological issues that warrant further investigation. HR acceleration appears to decrease in response to overreaching training, and thus may be a potential indicator of training-induced fatigue.
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Affiliation(s)
- Clint R Bellenger
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia.
| | - Joel T Fuller
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Rebecca L Thomson
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Kade Davison
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | | | - Jonathan D Buckley
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
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Lucini D, Marchetti I, Spataro A, Malacarne M, Benzi M, Tamorri S, Sala R, Pagani M. Heart rate variability to monitor performance in elite athletes: Criticalities and avoidable pitfalls. Int J Cardiol 2017; 240:307-312. [PMID: 28495249 DOI: 10.1016/j.ijcard.2017.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/02/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Spectral analysis of Heart Rate Variability (HRV) is a simple, non-invasive technique that is widely used in sport to assess sympatho-vagal regulation of the heart. Its employment is increasing partly due to the rising usage of wearable devices. However data acquisition using these devices may be suboptimal because they cannot discriminate between sinus and non-sinus beats and do not record any data regarding respiratory frequency. This information is mandatory for a correct clinical interpretation. METHODS This study involved 974 elite athletes, all of them underwent a complete autonomic assessment, by way of Autoregressive HRV analysis. RESULTS In 91 subjects (9% of the total population) we observed criticalities of either cardiac rhythm or respiration. Through perusal of one-lead ECG analysis we observed that 77 subjects had atrial or ventricular ectopy, i.e. conditions which impair stationarity and sinus rhythm. Running anyway autonomic nervous system analysis in this population, we observed that RR variance and raw values of LF and HF regions are significantly higher in arrhythmic subjects. In addition 14 subjects had slow (about 6 breath/min, 0.1Hz) respiration. This condition clouds the separation between LF from HF spectral regions of RR interval variability, respectively markers of the prevalent sympathetic and vagal modulation of SA node and of their synergistic interaction. CONCLUSIONS Caution must be payed when assessing HRV with non-ECG wearable devices. Recording ECG signal and ensuring that respiratory rate is higher than 10 breath/min are both prerequisites for a more reliable analysis of HRV particularly in athletes.
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Affiliation(s)
- Daniela Lucini
- University of Milano, BIOMETRA, via Vanvitelli 32, Milano 20129, Italy; Sezione Medicina dell'Esercizio e Patologie Funzionali, Humanitas Clinical and Research Center, via Manzoni 56, Rozzano 20089, Italy.
| | - Ilaria Marchetti
- University of Milano, BIOMETRA, via Vanvitelli 32, Milano 20129, Italy
| | - Antonio Spataro
- Sports Medicine Institute CONI, largo G Onesti 1, Rome 00197, Italy
| | - Mara Malacarne
- University of Milano, BIOMETRA, via Vanvitelli 32, Milano 20129, Italy; Sezione Medicina dell'Esercizio e Patologie Funzionali, Humanitas Clinical and Research Center, via Manzoni 56, Rozzano 20089, Italy
| | - Manuela Benzi
- Sports Medicine Institute CONI, largo G Onesti 1, Rome 00197, Italy
| | - Stefano Tamorri
- Sports Medicine Institute CONI, largo G Onesti 1, Rome 00197, Italy
| | - Roberto Sala
- University of Milano, BIOMETRA, via Vanvitelli 32, Milano 20129, Italy
| | - Massimo Pagani
- University of Milano, BIOMETRA, via Vanvitelli 32, Milano 20129, Italy
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Woda A, Picard P, Dutheil F. Dysfunctional stress responses in chronic pain. Psychoneuroendocrinology 2016; 71:127-35. [PMID: 27262345 DOI: 10.1016/j.psyneuen.2016.05.017] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/06/2016] [Accepted: 05/18/2016] [Indexed: 11/26/2022]
Abstract
Many dysfunctional and chronic pain conditions overlap. This review describes the different modes of chronic deregulation of the adaptive response to stress which may be a common factor for these conditions. Several types of dysfunction can be identified within the hypothalamo-pituitary-adrenal axis: basal hypercortisolism, hyper-reactivity, basal hypocortisolism and hypo-reactivity. Neuroactive steroid synthesis is another component of the adaptive response to stress. Dehydroepiandrosterone (DHEA) and its sulfated form DHEA-S, and progesterone and its derivatives are synthetized in cutaneous, nervous, and adipose cells. They are neuroactive factors that act locally. They may have a role in the localization of the symptoms and their levels can vary both in the central nervous system and in the periphery. Persistent changes in neuroactive steroid levels or precursors can induce localized neurodegeneration. The autonomic nervous system is another component of the stress response. Its dysfunction in chronic stress responses can be expressed by decreased basal parasympathethic activity, increased basal sympathetic activity or sympathetic hyporeactivity to a stressful stimulus. The immune and genetic systems also participate. The helper-T cells Th1 secrete pro-inflammatory cytokines such as IL-1-β, IL-2, IL-6, IL-8, IL-12, IFN-γ, and TNF-α, whereas Th2 secrete anti-inflammatory cytokines: IL-4, IL-10, IGF-10, IL-13. Chronic deregulation of the Th1/Th2 balance can occur in favor of anti- or pro-inflammatory direction, locally or systemically. Individual vulnerability to stress can be due to environmental factors but can also be genetically influenced. Genetic polymorphisms and epigenetics are the main keys to understanding the influence of genetics on the response of individuals to constraints.
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Affiliation(s)
- Alain Woda
- Dental faculty, EA 3847, CROC, 11 Boulevard Charles-de-Gaulle, Clermont-Ferrand, France; University Hospital of Clermont-Ferrand (CHU), Odontology department, Clermont-Ferrand, France
| | - Pascale Picard
- Pain center, University Hospital of Clermont-Ferrand (CHU), Clermont-Ferrand, France
| | - Frédéric Dutheil
- Preventive and Occupational Medicine, University Hospital of Clermont-Ferrand (CHU), Clermont-Ferrand, France; University Clermont Auvergne, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France; Australian Catholic University, Faculty of Health, Melbourne, Victoria, Australia; CNRS, UMR 6024, Physiological and Psychosocial Stress, LAPSCO, University Clermont Auvergne, Clermont-Ferrand, France.
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Wilkerson GB, Gupta A, Allen JR, Keith CM, Colston MA. Utilization of Practice Session Average Inertial Load to Quantify College Football Injury Risk. J Strength Cond Res 2016; 30:2369-74. [DOI: 10.1519/jsc.0000000000001370] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dos Santos GB, de Oliveira AG, Ramos LAF, Gomes-Marcondes MCC, Areas MA. Long-term leucine supplementation aggravates prolonged strenuous exercise-induced cardiovascular changes in trained rats. Exp Physiol 2016; 101:811-20. [PMID: 27185489 DOI: 10.1113/ep085704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 05/12/2016] [Indexed: 12/27/2022]
Abstract
NEW FINDINGS What is the central question of this study? Can long-term leucine supplementation prevent prolonged strenuous endurance exercise induced cardiac injury? What is the main finding and its importance? Prolonged endurance exercise does not seem to exceed cardiac energetic capacity, hence it does not represent an energy threat to this organ, at least in trained subjects. However, it may induce, in susceptible individuals, a state of cardiac electrical instability, which has been associated with ventricular arrhythmias and sudden cardiac death. This situation might be worsened when combined with leucine supplementation, which leads to increased blood pressure and cardiac injury. Leucine supplementation failed to prevent cardiac fatigue symptoms and may aggravate prolonged strenuous exercise-induced cardiovascular disturbances in trained rats. Observational studies have raised concerns that prolonged strenuous exercise training may be associated with increased risk of cardiac arrhythmia and even primary cardiac arrest or sudden death. It has been demonstrated that leucine can reduce prolonged exercise-induced muscle damage and accelerate the recovery process. The aim of this study was to investigate the effects of prolonged strenuous endurance exercise on cardiovascular parameters and biomarkers of cardiac injury in trained adult male rats and assess the use of leucine as an auxiliary substance to prevent the likely cardiac adverse effects caused by strenuous exercise. Twenty-four male Wistar rats were randomly allocated to receive a balanced control diet (18% protein) or a leucine-rich diet (15% protein plus 3% leucine) for 6 weeks. The rats were submitted to 1 h of exercise, 5 days per week for 6 weeks. Three days after the training period, the rats were submitted to swimming exercise until exhaustion, and cardiac parameters were assessed. Exercising until exhaustion significantly increased cardiac biomarker levels, cytokines and glycogen content inhibited protein synthesis signalling and led to cardiac electrical disturbances. When combined with exercise, leucine supplementation led to greater increases in the aforementioned parameters and also a significant increase in blood pressure and protein degradation signalling. We report, for the first time, that leucine supplementation not only fails to prevent cardiac fatigue symptoms, but may also aggravate prolonged strenuous exercise-induced cardiovascular disturbances in trained rats. Furthermore, we find that exercising until exhaustion can cause cardiac electrical disturbances and damage cardiac myocytes.
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Affiliation(s)
- Gustavo Barbosa Dos Santos
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), 13083-862 Campinas, São Paulo, Brazil.,Sport Science Department, Faculty of Physical Education, Metropolitan College of Campinas (Metrocamp), 13035-270 Campinas, São Paulo, Brazil
| | - André Gustavo de Oliveira
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), 13083-862 Campinas, São Paulo, Brazil
| | - Luiz Alberto Ferreira Ramos
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), 13083-862 Campinas, São Paulo, Brazil
| | - Maria Cristina Cintra Gomes-Marcondes
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), 13083-862 Campinas, São Paulo, Brazil
| | - Miguel Arcanjo Areas
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), 13083-862 Campinas, São Paulo, Brazil
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Schmidt M, Baumert M, Malberg H, Zaunseder S. T Wave Amplitude Correction of QT Interval Variability for Improved Repolarization Lability Measurement. Front Physiol 2016; 7:216. [PMID: 27375494 PMCID: PMC4895120 DOI: 10.3389/fphys.2016.00216] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 05/23/2016] [Indexed: 11/13/2022] Open
Abstract
Objectives: The inverse relationship between QT interval variability (QTV) and T wave amplitude potentially confounds QT variability assessment. We quantified the influence of the T wave amplitude on QTV in a comprehensive dataset and devised a correction formula. Methods: Three ECG datasets of healthy subjects were analyzed to model the relationship between T wave amplitude and QTV. To derive a generally valid correction formula, linear regression analysis was used. The proposed correction formula was applied to patients enrolled in the Evaluation of Defibrillator in Non-Ischemic Cardiomyopathy Treatment Evaluation trial (DEFINITE) to assess the prognostic significance of QTV for all-cause mortality in patients with non-ischemic dilated cardiomyopathy. Results: A strong inverse relationship between T wave amplitude and QTV was demonstrated, both in healthy subjects (R2 = 0.68, p < 0.001) and DEFINITE patients (R2 = 0.20, p < 0.001). Applying the T wave amplitude correction to QTV achieved 2.5-times better group discrimination between patients enrolled in the DEFINITE study and healthy subjects. Kaplan-Meier estimator analysis showed that T wave amplitude corrected QTVi is inversely related to survival (p < 0.01) and a significant predictor of all-cause mortality. Conclusion: We have proposed a simple correction formula for improved QTV assessment. Using this correction, predictive value of QTV for all-cause mortality in patients with non-ischemic cardiomyopathy has been demonstrated.
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Affiliation(s)
- Martin Schmidt
- Institute of Biomedical Engineering, Technische Universität Dresden Dresden, Germany
| | - Mathias Baumert
- School of Electrical and Electronic Engineering, The University of Adelaide Adelaide, SA, Australia
| | - Hagen Malberg
- Institute of Biomedical Engineering, Technische Universität Dresden Dresden, Germany
| | - Sebastian Zaunseder
- Institute of Biomedical Engineering, Technische Universität Dresden Dresden, Germany
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Detailed heart rate variability analysis in athletes. Clin Auton Res 2016; 26:245-52. [DOI: 10.1007/s10286-016-0360-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 04/18/2016] [Indexed: 01/22/2023]
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Baumert M, Schmidt M, Zaunseder S, Porta A. Effects of ECG sampling rate on QT interval variability measurement. Biomed Signal Process Control 2016. [DOI: 10.1016/j.bspc.2015.11.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Discriminating between two autonomic profiles related to posture in Olympic athletes. Eur J Appl Physiol 2016; 116:815-22. [DOI: 10.1007/s00421-016-3337-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 01/26/2016] [Indexed: 10/22/2022]
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Musculoskeletal overuse injuries and heart rate variability: Is there a link? Med Hypotheses 2015; 87:1-7. [PMID: 26826630 DOI: 10.1016/j.mehy.2015.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 11/05/2015] [Accepted: 12/06/2015] [Indexed: 01/06/2023]
Abstract
Accurate detection and prevention of overuse musculoskeletal injuries is limited by the nature of somatic tissue injury. In the pathogenesis of overuse injuries, it is well recognized that an abnormal inflammatory response occurs within somatic tissue before pain is perceived which can disrupt the normal remodeling process and lead to subsequent degeneration. Current overuse injury prevention methods focused on biomechanical faults or performance standards lack the sensitivity needed to identify the status of tissue injury or repair. Recent evidence has revealed an apparent increase in the prevalence and impact of overuse musculoskeletal injuries in athletics. When compared to acute injuries, overuse injuries have a potentially greater negative impact on athletes' overall health burden. Further, return to sport rehabilitation following overuse injury is complicated by the fact that the absence of pain does not equate to complete physiological healing of the injured tissue. Together, this highlights the need for exercise monitoring and injury prevention methods which incorporate assessment of somatic tissue response to loading. One system primarily involved in the activation of pathways and neuromediators responsible for somatic tissue repair is the autonomic nervous system (ANS). Although not completely understood, emerging research supports the critical importance of peripheral ANS activity in the health and repair of somatic tissue injury. Due to its significant contributions to cardiac function, ANS activity can be measured indirectly with heart rate monitoring. Heart rate variability (HRV) is one index of ANS activity that has been used to investigate the relationship between athletes' physiological response to accumulating training load. Research findings indicated that HRV may provide a reflection of ANS homeostasis, or the body's stress-recovery status. This noninvasive marker of the body's primary driver of recovery has the potential to incorporate important and as yet unmonitored physiological mechanisms involved in overuse injury development. We hypothesize that abnormal somatic tissue response to accumulating microtrauma may modulate ANS activity at the level of HRV. Exploring the link between HRV modulation and somatic tissue injury has the potential to reveal the putative role of ANS homeostasis on overuse musculoskeletal injury development.
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Bellenger CR, Thomson RL, Howe PRC, Karavirta L, Buckley JD. Monitoring athletic training status using the maximal rate of heart rate increase. J Sci Med Sport 2015. [PMID: 26209427 DOI: 10.1016/j.jsams.2015.07.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Reductions in maximal rate of heart rate increase (rHRI) correlate with performance reductions when training load is increased. This study evaluated whether rHRI tracked performance changes across a range of training states. DESIGN Prospective intervention. METHODS rHRI was assessed during five min of cycling at 100W (rHRIcyc) and running at 8km/h (rHRIrun) in 13 male triathletes following two weeks of light-training (LT), two weeks of heavy-training (HT) and a two-day recovery period (RP). A five min cycling time-trial assessed performance and peak oxygen consumption (V˙O2peak). RESULTS Performance likely decreased following HT (Effect size±90% confidence interval=-0.18±0.09), then very likely increased following RP (0.32±0.14). rHRIcyc very likely decreased (-0.48±0.24), and rHRIrun possibly decreased (-0.33±0.48), following HT. Changes in both measures were unclear following RP. Steady-state HR was almost certainly lower (-0.81±0.31) during rHRIcyc than rHRIrun. A large correlation was found between reductions in performance and rHRIrun (r±90%; CI=0.65±0.34) from LT to HT, but was unclear for rHRIcyc. Trivial within-subject correlations were found between rHRI and performance, but the strength of relationship between rHRIrun and performance was largely associated with V˙O2peak following LT (r=-0.58±0.38). CONCLUSIONS Performance reductions were most sensitively tracked by rHRIrun following HT. This may be due to rHRIrun being assessed at a higher intensity than rHRIcyc, inferred from a higher steady-state HR and supported by a stronger within-subject relationship between rHRIrun and performance in individuals with a lower V˙O2peak, in whom the same exercise intensity would represent a greater physiological stress. rHRI assessed at relatively high exercise intensities may better track performance changes.
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Affiliation(s)
- Clint R Bellenger
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia.
| | - Rebecca L Thomson
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia
| | - Peter R C Howe
- Clinical Nutrition Research Centre, University of Newcastle, Australia
| | | | - Jonathan D Buckley
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia
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Baumert M, Javorka M, Kabir M. Joint symbolic dynamics for the assessment of cardiovascular and cardiorespiratory interactions. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2015; 373:rsta.2014.0097. [PMID: 25548272 PMCID: PMC4281868 DOI: 10.1098/rsta.2014.0097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Beat-to-beat variations in heart period provide information on cardiovascular control and are closely linked to variations in arterial pressure and respiration. Joint symbolic analysis of heart period, systolic arterial pressure and respiration allows for a simple description of their shared short-term dynamics that are governed by cardiac baroreflex control and cardiorespiratory coupling. In this review, we discuss methodology and research applications. Studies suggest that analysis of joint symbolic dynamics provides a powerful tool for identifying physiological and pathophysiological changes in cardiovascular and cardiorespiratory control.
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Affiliation(s)
- Mathias Baumert
- School of Electrical and Electronic Engineering, University of Adelaide, Adelaide, SA 5005, Australia
| | - Michal Javorka
- Department of Physiology, Jessenius Faculty of Medicine, Comenius University, Martin, Slovakia
| | - Muammar Kabir
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, OR 97239, USA
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Matos FDO, Samulski DM, Lima JRPD, Prado LS. Cargas elevadas de treinamento alteram funções cognitivas em jogadores de futebol. REV BRAS MED ESPORTE 2014. [DOI: 10.1590/1517-86922014200501274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUÇÃO: No esporte de rendimento, altas cargas de treinamento são necessárias para que ocorram adaptações biológicas que levem ao aprimoramento da forma física e do desempenho esportivo.OBJETIVO: Investigar o comportamento de variáveis psicológicas e fisiológicas, possíveis indicadores dos estados de estresse e recuperação, em jogadores de futebol ao longo da temporada esportiva, e a possibilidade da utilização desses como marcadores dos estados de treinabilidade dos atletas para prevenir quedas do desempenho e o overtraining.MÉTODOS: Participaram deste estudo 14 jogadores de futebol (18,4 ± 0,6 anos, 9,64 ± 1,61 % com gordura e VO2máx49,46 ± 2,88 ml/kg/min) da categoria júnior de uma equipe de primeira divisão do Brasil. Foram monitorados a percepção de estresse e a recuperação por meio do questionário RESTQ-Sport, a variabilidade de frequência cardíaca (VFC) de repouso, analisada no domínio do tempo e da frequência, e o tempo de reação simples. Efetuaram-se três coletas de dados, um controle (C), outra após quatro semanas de treinamentos intensos (T1), e finalmente depois de quatro semanas de treinamentos leves (T2) realizados após T1.RESULTADOS: Não foi encontrada diferença significativa em nenhuma das escalas do RESTQ-Sport e na VFC nos três momentos de coletas. O tempo de reação simples apresentou um aumento significativo(p = 0,047) em T1 em relação a C.CONCLUSÃO: Os resultados indicam que o tempo de reação foi a única variável sensível às alterações do treinamento estudado, podendo ser considerado um bom indicador da treinabilidade dos atletas.
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Morales J, Álamo JM, García-Massó X, Buscà B, López JL, Serra-Añó P, González LM. Use of Heart Rate Variability in Monitoring Stress and Recovery in Judo Athletes. J Strength Cond Res 2014; 28:1896-905. [DOI: 10.1519/jsc.0000000000000328] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Plews DJ, Laursen PB, Stanley J, Kilding AE, Buchheit M. Training adaptation and heart rate variability in elite endurance athletes: opening the door to effective monitoring. Sports Med 2014; 43:773-81. [PMID: 23852425 DOI: 10.1007/s40279-013-0071-8] [Citation(s) in RCA: 246] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The measurement of heart rate variability (HRV) is often considered a convenient non-invasive assessment tool for monitoring individual adaptation to training. Decreases and increases in vagal-derived indices of HRV have been suggested to indicate negative and positive adaptations, respectively, to endurance training regimens. However, much of the research in this area has involved recreational and well-trained athletes, with the small number of studies conducted in elite athletes revealing equivocal outcomes. For example, in elite athletes, studies have revealed both increases and decreases in HRV to be associated with negative adaptation. Additionally, signs of positive adaptation, such as increases in cardiorespiratory fitness, have been observed with atypical concomitant decreases in HRV. As such, practical ways by which HRV can be used to monitor training status in elites are yet to be established. This article addresses the current literature that has assessed changes in HRV in response to training loads and the likely positive and negative adaptations shown. We reveal limitations with respect to how the measurement of HRV has been interpreted to assess positive and negative adaptation to endurance training regimens and subsequent physical performance. We offer solutions to some of the methodological issues associated with using HRV as a day-to-day monitoring tool. These include the use of appropriate averaging techniques, and the use of specific HRV indices to overcome the issue of HRV saturation in elite athletes (i.e., reductions in HRV despite decreases in resting heart rate). Finally, we provide examples in Olympic and World Champion athletes showing how these indices can be practically applied to assess training status and readiness to perform in the period leading up to a pinnacle event. The paper reveals how longitudinal HRV monitoring in elites is required to understand their unique individual HRV fingerprint. For the first time, we demonstrate how increases and decreases in HRV relate to changes in fitness and freshness, respectively, in elite athletes.
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Affiliation(s)
- Daniel J Plews
- High Performance Sport New Zealand, AUT Millennium, 17 Antares Place, Mairangi Bay, 0632 Auckland, New Zealand.
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Henríquez OC, Báez SME, Von Oetinger A, Cañas JR, Ramírez CR. Autonomic control of heart rate after exercise in trained wrestlers. Biol Sport 2014; 30:111-5. [PMID: 24744476 PMCID: PMC3944582 DOI: 10.5604/20831862.1044429] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2012] [Indexed: 12/04/2022] Open
Abstract
The objective of this study was to establish differences in vagal reactivation, through heart rate recovery and heart rate variability post exercise, in Brazilian jiu-jitsu wrestlers (BJJW). A total of 18 male athletes were evaluated, ten highly trained (HT) and eight moderately trained (MT), who performed a maximum incremental test. At the end of the exercise, the R-R intervals were recorded during the first minute of recovery. We calculated heart rate recovery (HRR60s), and performed linear and non-linear (standard deviation of instantaneous beat-to-beat R-R interval variability – SD1) analysis of heart rate variability (HRV), using the tachogram of the first minute of recovery divided into four segments of 15 s each (0-15 s, 15-30 s, 30-45 s, 45-60 s). Between HT and MT individuals, there were statistically significant differences in HRR60s (p <0.05) and in the non linear analysis of HRV from SD130-45s (p <0.05) and SD145-60s (p <0.05). The results of this research suggest that heart rate kinetics during the first minute after exercise are related to training level and can be used as an index for autonomic cardiovascular control in BJJW.
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Affiliation(s)
- Olguín C Henríquez
- Laboratorio de Fisiología, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas. Universidad Andrés Bello, Chile
| | - San Martín E Báez
- Laboratorio de Fisiología, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas. Universidad Andrés Bello, Chile ; Departamento de Deportes y Recreación, Facultad de Ciencias de la Actividad Física y el Deporte. Universidad de Playa Ancha, Chile
| | - A Von Oetinger
- Escuela de Kinesiología, Facultad de Ciencias de la Rehabilitación. Universidad Andrés Bello, Chile
| | - Jamett R Cañas
- Laboratorio de Fisiología, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas. Universidad Andrés Bello, Chile
| | - Campillo R Ramírez
- Departamento Ciencias de la Actividad Física. Universidad de Los Lagos, Chile
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Foulds HJA, Cote AT, Phillips AA, Charlesworth SA, Bredin SSD, Burr JF, Drury CT, Ngai S, Fougere RJ, Ivey AC, Warburton DER. Characterisation of baroreflex sensitivity of recreational ultra-endurance athletes. Eur J Sport Sci 2014; 14:686-94. [DOI: 10.1080/17461391.2014.884169] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Baroreflex variability and "resetting": a new perspective. J Biomech 2014; 47:237-44. [PMID: 24182696 DOI: 10.1016/j.jbiomech.2013.09.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/22/2013] [Accepted: 09/09/2013] [Indexed: 01/18/2023]
Abstract
A new framework is proposed for the interpretation of spontaneous cardiac baroreflex sensitivity data and the general concept of baroreflex resetting. The framework is used to explore baroreflex function along two separate lines of inquiry: one following a direct intervention in baroreflex function in individual subjects, another in a group of subjects where baroreflex function may have been compromised by coronary artery disease or aging. It is found that under baseline conditions the baroreflex is in a "free-floating" state in which the gain or "sensitivity" is highly variable, while under orthostatic stress or in the absence of or reduced vagal input the gain is more tightly controlled with an expected decline in sensitivity but a very large decline in the variability of that sensitivity. It is concluded that baroreflex "resetting" is better viewed not simply as a change in baroreflex sensitivity but rather as a change in the "focus" or "attention" of the baroreflex as expressed by an observed decline in the variability of the measured gain. The results do not support the interpretation of baroreflex "resetting" as a departure from or return to a universal "set point" as in homeostasis or open loop models.
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Freitas DGSD, Pinto A, Damasceno VDO, Freitas VHD, Miloski B, Bara Filho MG. Efeitos do treinamento sobre variaveis psicofisiologicas na pre-temporada de futebol. REV BRAS MED ESPORTE 2014. [DOI: 10.1590/s1517-86922014000100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJETIVO: Verificar o efeito da carga de treinamento em variáveis bioquímicas, psicológicas, fisiológicas e hematológicas durante uma pré-temporada em atletas profissionais de futebol. MÉTODOS: Oito jogadores de futebol profissional foram monitorados por 21 dias durante uma pré-temporada e submetidos a quatro avaliações (T1, T2, T3 e T4). As variáveis analisadas foram: concentração de hemoglobina, creatina quinase, questionário POMS e variabilidade da frequência cardíaca no domínio do tempo e da frequência. A carga de treinamento de cada sessão foi quantificada através do método TRIMP. RESULTADOS: A creatina quinase aumentou significativamente (p<0,05) em T2 e T3 com relação a T1, seguindo o comportamento da carga de treinamento. As outras variáveis não apresentaram diferença significativa (p>0,05) e não foram encontradas correlações entre as variáveis. CONCLUSÃO: Parece que a creatina quinase é a variável mais sensível à carga de treinamento do que as outras analisadas. Os valores da variabilidade da frequência cardíaca no domínio da frequência apresentam uma tendência na resposta para mudanças na carga de treinamento.
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