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Dokht Abdiyan R, Sadeghpour A, Alizadehasl A, Ahmadi A, Saed D, Ravasi AA, Akbarnejad A, Maleki M, Shariati A, Shahed A, Aziminia M. Effect of resistance exercise on cardiac perturbations and systolic performance: A cross-over randomized trial comparing volumes and techniques. J Sports Sci 2023; 41:1196-1206. [PMID: 37729561 DOI: 10.1080/02640414.2023.2260636] [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: 11/07/2022] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
This study investigated the magnitude and time-course of resistance exercise (RE) technique induced transient cardiac perturbations. Twenty-four participants were assigned to one of four arms: sets to failure or non-failure with 8-10 repetition maximum (RM), and sets to failure or non-failure with 15RM. Echocardiographic and blood pressure (BP) data were recorded at baseline and 30 min, 6 h and 24 h post-exercise. In all groups end-systolic circumferential wall stress (cESS), and ratio of transmitral inflow velocities (E/A) were significantly decreased while posterior wall thickness (PWT), global circumferential strain (GCS), GCS strain rate (GCSR), global longitudinal strain rate (GLSR), and stroke volume (SV) were significantly increased for up to 6 h of follow-up. In the 15RM groups, left ventricular (LV) mass and interventricular septal thickness (IVST) were significantly increased, and left atrial (LA) area was significantly decreased (p < 0.05) compared to the 8-10 RM groups. In the 15RM groups, RE decreased global longitudinal strain (GLS) and increased ejection fraction (EF) (p<0.01). After RE, transient cardiac perturbations, the reduction in LA compliance, and the improvement in LV myofibril geometry were volume dependent and influenced more by sets to failure technique. RE increased GCS and reduced the afterload, thus helping to preserve SV and EF.
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Affiliation(s)
- Rasoul Dokht Abdiyan
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Anita Sadeghpour
- Echocardiography Research Center, Department of Cardiovascular Medicine, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Azin Alizadehasl
- Echocardiography Research Center, Department of Cardiovascular Medicine, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Azizeh Ahmadi
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tabriz, Tabriz, Iran
| | - Daryoush Saed
- Echocardiography Research Center, Department of Cardiovascular Medicine, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Asghar Ravasi
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Ali Akbarnejad
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Majid Maleki
- Echocardiography Research Center, Department of Cardiovascular Medicine, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Akram Shariati
- Department of Cardiology, Urmia University of Medical Sciences, Urmia, Iran
| | - Atabak Shahed
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Mahdiye Aziminia
- Echocardiography Research Center, Department of Cardiovascular Medicine, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Chen H, Warncke ML, Muellerleile K, Saering D, Beitzen-Heineke A, Kisters A, Swiderska M, Cavus E, Jahnke CM, Adam G, Lund GK, Tahir E. Acute impact of an endurance race on biventricular and biatrial myocardial strain in competitive male and female triathletes evaluated by feature-tracking CMR. Eur Radiol 2021; 32:3423-3435. [PMID: 34902061 PMCID: PMC9038901 DOI: 10.1007/s00330-021-08401-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/02/2021] [Accepted: 10/11/2021] [Indexed: 11/25/2022]
Abstract
Objectives Cardiac adaptation in endurance athletes is a well-known phenomenon, but the acute impact of strenuous exercise is rarely reported on. The aim of this study was to analyze the alterations in biventricular and biatrial function in triathletes after an endurance race using novel feature-tracking cardiac magnetic resonance (FT-CMR). Methods Fifty consecutive triathletes (45 ± 10 years; 80% men) and twenty-eight controls were prospectively recruited, and underwent 1.5-T CMR. Biventricular and biatrial volumes, left ventricular ejection fraction (LVEF), FT-CMR analysis, and late gadolinium imaging (LGE) were performed. Global systolic longitudinal (GLS), circumferential (GCS), and radial strain (GRS) were assessed. CMR was performed at baseline and following an endurance race. High-sensitive troponin T and NT-proBNP were determined. The time interval between race completion and CMR was 2.3 ± 1.1 h (range 1–5 h). Results Post-race troponin T (p < 0.0001) and NT-proBNP (p < 0.0001) were elevated. LVEF remained constant (62 ± 6 vs. 63 ± 7%, p = 0.607). Post-race LV GLS decreased by tendency (− 18 ± 2 vs. − 17 ± 2%, p = 0.054), whereas GCS (− 16 ± 4 vs. − 18 ± 4%, p < 0.05) and GRS increased (39 ± 11 vs. 44 ± 11%, p < 0.01). Post-race right ventricular GLS (− 19 ± 3 vs. − 19 ± 3%, p = 0.668) remained constant and GCS increased (− 7 ± 2 vs. − 8 ± 3%, p < 0.001). Post-race left atrial GLS (30 ± 8 vs. 24 ± 6%, p < 0.0001) decreased while right atrial GLS remained constant (25 ± 6 vs. 24 ± 6%, p = 0.519). Conclusions The different alterations of post-race biventricular and biatrial strain might constitute an intrinsic compensatory mechanism following an acute bout of endurance exercise. The combined use of strain parameters may allow a better characterization of ventricular and atrial function in endurance athletes. Key Points • Triathletes demonstrate a decrease of LV global longitudinal strain by tendency and constant RV global longitudinal strain following an endurance race. • Post-race LV and RV global circumferential and radial strains increase, possibly indicating a compensatory mechanism after an acute endurance exercise bout. • Subgroup analyses of male triathletes with focal myocardial fibrosis did not demonstrate alterations in biventricular and biatrial strain after an endurance race. Supplementary Information The online version contains supplementary material available at 10.1007/s00330-021-08401-y.
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Affiliation(s)
- Hang Chen
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Malte L Warncke
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Kai Muellerleile
- Department of General and Interventional Cardiology, University Heart Center, Hamburg, Germany
| | - Dennis Saering
- Information Technology and Image Processing, University of Applied Sciences, Wedel, Germany
| | - Antonia Beitzen-Heineke
- Department of Oncology, Hematology, BMT With Department of Pneumology, University Medical Center Hamburg, Hamburg, Germany
| | - Anna Kisters
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Monika Swiderska
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Ersin Cavus
- Department of General and Interventional Cardiology, University Heart Center, Hamburg, Germany
| | - Charlotte M Jahnke
- Department of General and Interventional Cardiology, University Heart Center, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Gunnar K Lund
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Enver Tahir
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
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Sex-Specific Impacts of Exercise on Cardiovascular Remodeling. J Clin Med 2021; 10:jcm10173833. [PMID: 34501285 PMCID: PMC8432130 DOI: 10.3390/jcm10173833] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/21/2021] [Accepted: 08/21/2021] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular diseases (CVD) remain the leading cause of death in men and women. Biological sex plays a major role in cardiovascular physiology and pathological cardiovascular remodeling. Traditionally, pathological remodeling of cardiovascular system refers to the molecular, cellular, and morphological changes that result from insults, such as myocardial infarction or hypertension. Regular exercise training is known to induce physiological cardiovascular remodeling and beneficial functional adaptation of the cardiovascular apparatus. However, impact of exercise-induced cardiovascular remodeling and functional adaptation varies between males and females. This review aims to compare and contrast sex-specific manifestations of exercise-induced cardiovascular remodeling and functional adaptation. Specifically, we review (1) sex disparities in cardiovascular function, (2) influence of biological sex on exercise-induced cardiovascular remodeling and functional adaptation, and (3) sex-specific impacts of various types, intensities, and durations of exercise training on cardiovascular apparatus. The review highlights both animal and human studies in order to give an all-encompassing view of the exercise-induced sex differences in cardiovascular system and addresses the gaps in knowledge in the field.
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Trachsel LD, David LP, Gayda M, Boidin M, Lalongé J, Juneau M, Nigam A, Henri C. Impact of aerobic training periodisation on global and regional right ventricular strain in coronary heart disease. Appl Physiol Nutr Metab 2021; 46:1502-1509. [PMID: 34310883 DOI: 10.1139/apnm-2021-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Linear aerobic training periodisation (LP) is recommended for patients with coronary heart disease (CHD). However, the effects of training periodisation on the right heart mechanics in patients with CHD have never been examined. This study aimed to explore the effects of LP and non-linear periodisation (NLP) on right heart mechanics. We prospectively randomised CHD patients to 12 weeks of aerobic training with LP or NLP. While there was a weekly increase in energy expenditure with LP, there was a steeper increase during the first 3 weeks, followed by a decrease in the fourth week with NLP. Echocardiography was performed at baseline and after the training period to assess the right ventricular free wall (RVFW) and right atrial strain. Thirty patients with CHD were included (NLP, n = 16; LP, n = 14). The traditional right and left heart parameters showed no significant time effects. There was a decrease of RVFW strain with time in both groups (+1.3 ± 0.9% with NLP, and +1.5 ± 0.8% with LP; p = 0.033). Mid-ventricular RVFW strain changed significantly with time (+2.0 ± 1.3% with NLP, and from +2.3 ± 1.2% with LP; p = 0.025). There was no time effect on the right atrial strain. In stable CHD patients, LP and NLP resulted in right ventricular strain decrements with a segment-specific pattern. This study was registered at ClinicalTrials.gov (identifier number: NCT03414996). Novelty: In stable coronary heart disease patients, both linear and non-linear aerobic training periodisation programs result in right ventricular strain decrements with time, particularly in the mid-ventricular segment. Traditional right and left heart parameters and right atrial strain showed no significant time effect in both 12 weeks aerobic training periodisation programs.
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Affiliation(s)
- Lukas D Trachsel
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,University Clinic for Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Louis-Philippe David
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Mathieu Gayda
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Research Centre, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Maxime Boidin
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada.,School of Kinesiology & Exercise Science, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Julie Lalongé
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada
| | - Martin Juneau
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Research Centre, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Anil Nigam
- Cardiovascular Prevention and Rehabilitation (ÉPIC) Center, Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Research Centre, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Christine Henri
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Research Centre, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
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Pagourelias ED, Christou GA, Sotiriou PG, Anifanti MA, Koutlianos NA, Tsironi MP, Christou KA, Vassilikos VP, Deligiannis AP, Kouidi EJ. Impact of a 246 Km ultra-marathon running race on heart: Insights from advanced deformation analysis. Eur J Sport Sci 2021; 22:1287-1295. [PMID: 33980129 DOI: 10.1080/17461391.2021.1930194] [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: 10/21/2022]
Abstract
Although previous studies suggest that prolonged intense exercise such as marathon running transitorily alters cardiac function, there is little information regarding ultramarathon races. Aim of this study was to investigate the acute impact of ultra-endurance exercise (UEE) on heart, applying advanced strain imaging. Echocardiographic assessment was performed the day before and at the finish line of "Spartathlon": A 246 Km ultra-marathon running race. 2D speckle-tracking echocardiography was performed in all four chambers, evaluating longitudinal strain (LS) for both ventricles and atria. Peak strain values and temporal parameters adjusted for heart rate were extracted from the derived curves. Out of 60 participants initially screened, 27 athletes (19 male, age 45 ± 7 years) finished the race in 33:34:27(28:50:38-35:07:07) hours. Absolute values of right (RV) and left ventricular (LV) LS (RVLS -22.9 ± 3.6 pre- to -21.2 ± 3.0% post-, p=0.04 and LVLS -20.9 ± 2.3 pre- to -18.8 ± 2.0 post-, p=0.009) slightly decreased post-race, whereas atrial strain did not change. RV and LV LS decrease was caused mainly by strain impairment of basal regions with apical preservation. Inter-chamber relationships assessed through RV/LV, LV/LA, RV/RA and RA/LA peak values' ratios remained unchanged from pre to post-race. Finally, UEE caused an extension of the systolic phase of cardiac cycle with concomitant diastole reduction (p<0.001 for all strain curves). Conclusively, ventricular LS strain as well as effective diastolic period slightly decreased, whereas atrial strain and inter-chamber relationships remained unchanged after running a 246-km-ultra-marathon race. These changes may be attributed to concomitant pre- and afterload alterations following UEE.
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Affiliation(s)
- Efstathios D Pagourelias
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece.,Third Cardiology Department, Hippokrateion University Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios A Christou
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Panagiota G Sotiriou
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria A Anifanti
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikolaos A Koutlianos
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria P Tsironi
- Faculty of Human Movement and Quality of Life Sciences, Department of Nursing, University of Peloponnese, Sparta, Greece
| | - Konstantinos A Christou
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Vasileios P Vassilikos
- Third Cardiology Department, Hippokrateion University Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Asterios P Deligiannis
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evangelia J Kouidi
- Sports Medicine Laboratory, Department of Physical Education and Sports Science, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Gomes-Santos IL, Jordão CP, Passos CS, Brum PC, Oliveira EM, Chammas R, Camargo AA, Negrão CE. Exercise Training Preserves Myocardial Strain and Improves Exercise Tolerance in Doxorubicin-Induced Cardiotoxicity. Front Cardiovasc Med 2021; 8:605993. [PMID: 33869297 PMCID: PMC8047409 DOI: 10.3389/fcvm.2021.605993] [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: 09/14/2020] [Accepted: 03/01/2021] [Indexed: 12/25/2022] Open
Abstract
Doxorubicin causes cardiotoxicity and exercise intolerance. Pre-conditioning exercise training seems to prevent doxorubicin-induced cardiac damage. However, the effectiveness of the cardioprotective effects of exercise training concomitantly with doxorubicin treatment remains largely unknown. To determine whether low-to-moderate intensity aerobic exercise training during doxorubicin treatment would prevent cardiotoxicity and exercise intolerance, we performed exercise training concomitantly with chronic doxorubicin treatment in mice. Ventricular structure and function were accessed by echocardiography, exercise tolerance by maximal exercise test, and cardiac biology by histological and molecular techniques. Doxorubicin-induced cardiotoxicity, evidenced by impaired ventricular function, cardiac atrophy, and fibrosis. Exercise training did not preserve left ventricular ejection fraction or reduced fibrosis. However, exercise training preserved myocardial circumferential strain alleviated cardiac atrophy and restored cardiomyocyte cross-sectional area. On the other hand, exercise training exacerbated doxorubicin-induced body wasting without affecting survival. Finally, exercise training blunted doxorubicin-induced exercise intolerance. Exercise training performed during doxorubicin-based chemotherapy can be a valuable approach to attenuate cardiotoxicity.
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Affiliation(s)
- Igor L Gomes-Santos
- Faculdade de Medicina, Heart Institute (InCor), Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil
| | - Camila P Jordão
- Faculdade de Medicina, Heart Institute (InCor), Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil
| | - Clevia S Passos
- Faculdade de Medicina, Heart Institute (InCor), Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil
| | - Patricia C Brum
- School of Physical Education and Sport, Universidade de São Paulo, São Paulo, Brazil
| | - Edilamar M Oliveira
- School of Physical Education and Sport, Universidade de São Paulo, São Paulo, Brazil
| | - Roger Chammas
- Faculdade de Medicina, Cancer Institute of the State of São Paulo (ICESP), Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil
| | - Anamaria A Camargo
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Carlos E Negrão
- Faculdade de Medicina, Heart Institute (InCor), Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil.,School of Physical Education and Sport, Universidade de São Paulo, São Paulo, Brazil
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Oosthuyse T, Bosch AN, Millen AME. Effect of ingesting carbohydrate only or carbohydrate plus casein protein hydrolysate during a multiday cycling race on left ventricular function, plasma volume expansion and cardiac biomarkers. Eur J Appl Physiol 2019; 119:697-711. [PMID: 30610443 DOI: 10.1007/s00421-018-04060-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/18/2018] [Indexed: 01/17/2023]
Abstract
PURPOSE Multiday racing causes mild left ventricular (LV) dysfunction from day 1 that persists on successive days. We evaluated ingesting casein protein hydrolysate-carbohydrate (PRO) compared with carbohydrate-only (CHO) during a 3-day mountain bike race. METHODS Eighteen male cyclists were randomly assigned to ingest 6.7% carbohydrate without (CHO) or with 1.3% casein hydrolysate (PRO) during racing (~ 4-5 h/day; 68/71/71 km). Conventional LV echocardiography, plasma albumin content, plasma volume (PV) and blood biomarkers were measured before day 1 and post race on day 3. RESULTS Fourteen cyclists (n = 7 per group) completed the race. PV increased in CHO (mean increase (95% CI), 10.2% (0.1 to 20.2)%, p = 0.045) but not in PRO (0.4% (- 6.1 to 6.9)%). Early diastolic transmitral blood flow (E) was unchanged but deceleration time from peak E increased post race (CHO: 46.7 (11.8 to 81.6) ms, p = 0.019; PRO: 24.2 (- 0.5 to 48.9) ms, p = 0.054), suggesting impaired LV relaxation. Tissue Doppler mitral annular velocity was unchanged in CHO, but in PRO septal early-to-late diastolic ratio decreased (p = 0.016) and was compensated by increased lateral early (p = 0.034) and late (p = 0.012) velocities. Systolic function was preserved in both groups; with increased systolic lateral wall velocity in PRO (p = 0.002). Effect size increase in serum creatine kinase (CK) activity, CK-MB and C-reactive protein concentrations was less in PRO than CHO (Cohen's d mean ± SD, PRO: 2.91 ± 2.07; CHO: 7.56 ± 4.81, p = 0.046). CONCLUSION Ingesting casein hydrolysate with carbohydrate during a 3-day race prevented secondary hypervolemia and failed to curb impaired LV relaxation despite reducing tissue damage and inflammatory biomarkers. Without PV expansion, systolic function was preserved by lateral wall compensating for septal wall dysfunction.
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Affiliation(s)
- Tanja Oosthuyse
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Medical School, 7 York Road, Parktown, 2193, South Africa.
| | - Andrew N Bosch
- Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South Africa
| | - Aletta M E Millen
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Medical School, 7 York Road, Parktown, 2193, South Africa
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Vecchiarelli E, Banks L, Currie KD. Can a bout of exercise harm the human heart? J Physiol 2016; 594:7167-7168. [PMID: 27976391 DOI: 10.1113/jp273300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
| | - Laura Banks
- University of Toronto, Toronto, Ontario, Canada
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