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Cardiopulmonary exercise testing AND athletes

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https://www.readbyqxmd.com/read/29143123/recovery-of-the-cardiac-autonomic-nervous-and-vascular-system-after-maximal-cardiopulmonary-exercise-testing-in-recreational-athletes
#1
Heidi Weberruss, Johannes Maucher, Renate Oberhoffer, Jan Müller
OBJECTIVE: The body's adaptation to physical exercise is modulated by sympathetic and parasympathetic (vagal) branches of the autonomic nervous system (ANS). Heart rate variability (HRV), the beat-to-beat variation of the heart, is a proxy measure for ANS activity, whereas blood pressure (BP) is an indicator for cardiovascular function. Impaired vagal activity and lower BP is already described after exercise. However, inconsistent results exist about how long vagal recovery takes and how long post-exercise hypotension persists...
November 15, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28977060/minute-ventilation-variability-during-cardiopulmonary-exercise-test-is-higher-in-sedentary-men-than-in-athletes
#2
Renata Rodrigues Teixeira de Castro, Sabrina Pedrosa Lima, Allan Robson Kluser Sales, Antonio Claudio Lucas da Nóbrega
BACKGROUND: The occurrence of minute-ventilation oscillations during exercise, named periodic breathing, exhibits important prognostic information in heart failure. Considering that exercise training could influence the fluctuation of ventilatory components during exercise, we hypothesized that ventilatory variability during exercise would be greater in sedentary men than athletes. OBJECTIVE: To compare time-domain variability of ventilatory components of sedentary healthy men and athletes during a progressive maximal exercise test, evaluating their relationship to other variables usually obtained during a cardiopulmonary exercise test...
September 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28930880/cycling-power-outputs-predict-functional-threshold-power-and-maximum-oxygen-uptake
#3
Joshua Denham, John Scott-Hamilton, Amanda D Hagstrom, Adrian J Gray
Functional threshold power (FTP) has emerged as a correlate of lactate threshold and is commonly assessed by recreational and professional cyclists for tailored exercise programing. To identify whether results from traditional aerobic and anaerobic cycling tests could predict FTP and V˙ O2max, we analysed the association between estimated FTP, maximum oxygen uptake (V˙ O2max [mlkgmin]) and power outputs obtained from a maximal cycle ergometry cardiopulmonary exercise test (CPET) and a 30-s Wingate test in a heterogeneous cohort of cycle-trained and untrained individuals (N=40, mean±SD; age: 32...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28713463/cardiopulmonary-performance-during-maximal-exercise-in-soccer-players-with-alterations-in-renal-function
#4
Anderson Pontes Morales, Felipe Sampaio-Jorge, Luiz Felipe da Cruz Rangel, Jackson de Souza Menezes, Tiago Costa Leite, Beatriz Gonçalves Ribeiro
The aim of this study was to evaluate the curves of cardiorespiratory variables during cardiopulmonary exercise testing (CPET) in soccer players who had acute alterations in the glomerular filtration rate (GFR) after performing the pre-season training protocol. Sixteen male professional soccer players (25 ± 3 years; 179 ± 2 cm; and 77 ± 6 kg) were evaluated for oxygen uptake (VO2), heart rate (HR) and pulse relative oxygen (relative O2 Pulse) curves with intervals corresponding to 10% of the total duration of CPET...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28661414/muscle-mass-and-physical-recovery-in-icu-innovations-for-targeting-of-nutrition-and-exercise
#5
Paul E Wischmeyer, Zudin Puthucheary, Iñigo San Millán, Daniel Butz, Michael P W Grocott
PURPOSE OF REVIEW: We have significantly improved hospital mortality from sepsis and critical illness in last 10 years; however, over this same period we have tripled the number of 'ICU survivors' going to rehabilitation. Furthermore, as up to half the deaths in the first year following ICU admission occur post-ICU discharge, it is unclear how many of these patients ever returned home or a meaningful quality of life. For those who do survive, recent data reveals many 'ICU survivors' will suffer significant functional impairment or post-ICU syndrome (PICS)...
August 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28647809/left-ventricles-of-aging-athletes-better-untwisters-but-not-more-relaxed-during-exercise
#6
Claire Maufrais, G Doucende, T Rupp, M Dauzat, P Obert, S Nottin, I Schuster
OBJECTIVE: With an aging population and the increasing prevalence of heart failure with preserved ejection fraction, developing strategies to prevent diastolic dysfunction is crucial. Regular endurance training has been suggested to be one such strategy. However, the underlying mechanisms of training, including the effect on left ventricular (LV) untwist, which promotes LV filling, are unclear and studies exploring the heart during exercise in the aging heart are lacking. METHODS: Cardiopulmonary exercise testing with speckle tracking echocardiography was realized in male subjects: 16 young athletes (YA), 19 young controls (YC), 22 middle-aged athletes (MA) with a lifelong history of endurance training, and 20 middle-aged controls (MC)...
November 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28538301/proposal-of-a-new-specific-cardiopulmonary-exercise-test-for-taekwondo-athletes
#7
Marcus P Araujo, Antônio C L Nóbrega, Gabriel Espinosa, Matheus R Hausen, Renata R T Castro, Pedro P Soares, Jonas L Gurgel
The objective of this study is to evaluate the cardiorespiratory variables of Taekwondo athletes while performing incremental exercise test on an ergometer using a ramp protocol and to propose a specific protocol for assessing these physiological variables during Taekwondo practice. Fourteen athletes participated in 2 incremental exercise tests: a treadmill exercise test (TREADtest) and a Taekwondo-specific exercise test (TKDtest). The TKDtest consists in 1-minute stages of kicks with an incremental load between then...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28239404/impact-of-a-6-week-non-energy-restricted-ketogenic-diet-on-physical-fitness-body-composition-and-biochemical-parameters-in-healthy-adults
#8
Paul Urbain, Lena Strom, Lena Morawski, Anja Wehrle, Peter Deibert, Hartmut Bertz
BACKGROUND: The ketogenic diet (KD) is a very low-carbohydrate, high-fat and adequate-protein diet that without limiting calories induces different metabolic adaptations, eg, increased levels of circulating ketone bodies and a shift to lipid metabolism. Our objective was to assess the impact of a 6-week non-energy-restricted KD in healthy adults beyond cohorts of athletes on physical performance, body composition, and blood parameters. METHODS: Our single arm, before-and-after comparison study consisted of a 6-week KD with a previous preparation period including detailed instructions during classes and individual counselling by a dietitian...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28110638/assessing-exercise-cardiac-reserve-using-real-time-cardiovascular-magnetic-resonance
#9
Thu-Thao Le, Jennifer Ann Bryant, Alicia Er Ting, Pei Yi Ho, Boyang Su, Raymond Choon Chye Teo, Julian Siong-Jin Gan, Yiu-Cho Chung, Declan P O'Regan, Stuart A Cook, Calvin Woon-Loong Chin
BACKGROUND: Exercise cardiovascular magnetic resonance (ExCMR) has great potential for clinical use but its development has been limited by a lack of compatible equipment and robust real-time imaging techniques. We developed an exCMR protocol using an in-scanner cycle ergometer and assessed its performance in differentiating athletes from non-athletes. METHODS: Free-breathing real-time CMR (1.5T Aera, Siemens) was performed in 11 athletes (5 males; median age 29 [IQR: 28-39] years) and 16 age- and sex-matched healthy volunteers (7 males; median age 26 [interquartile range (IQR): 25-33] years)...
January 23, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27982272/cardiopulmonary-exercise-test-background-applicability-and-interpretation
#10
REVIEW
Artur Haddad Herdy, Luiz Eduardo Fonteles Ritt, Ricardo Stein, Claudio Gil Soares de Araújo, Mauricio Milani, Romeu Sérgio Meneghelo, Almir Sérgio Ferraz, Carlos Hossri, Antonio Eduardo Monteiro de Almeida, Miguel Morita Fernandes-Silva, Salvador Manoel Serra
Cardiopulmonary exercise test (CPET) has been gaining importance as a method of functional assessment in Brazil and worldwide. In its most frequent applications, CPET consists in applying a gradually increasing intensity exercise until exhaustion or until the appearance of limiting symptoms and/or signs. The following parameters are measured: ventilation; oxygen consumption (VO2); carbon dioxide production (VCO2); and the other variables of conventional exercise testing. In addition, in specific situations, pulse oximetry and flow-volume loops during and after exertion are measured...
November 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27903541/lifelong-physical-activity-regardless-of-dose-is-not-associated-with-myocardial-fibrosis
#11
COMPARATIVE STUDY
Shuaib M Abdullah, Kyler W Barkley, Paul S Bhella, Jeffrey L Hastings, Susan Matulevicius, Naoki Fujimoto, Shigeki Shibata, Graeme Carrick-Ranson, M Dean Palmer, Nainesh Gandhi, Laura F DeFina, Benjamin D Levine
BACKGROUND: Recent reports have suggested that long-term, intensive physical training may be associated with adverse cardiovascular effects, including the development of myocardial fibrosis. However, the dose-response association of different levels of lifelong physical activity on myocardial fibrosis has not been evaluated. METHODS AND RESULTS: Seniors free of major chronic illnesses were recruited from predefined populations based on the consistent documentation of stable physical activity over >25 years and were classified into 4 groups by the number of sessions/week of aerobic activities ≥30 minutes: sedentary (group 1), <2 sessions; casual (group 2), 2 to 3 sessions; committed (group 3), 4 to 5 sessions; and Masters athletes (group 4), 6 to 7 sessions plus regular competitions...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27408630/dysfunctional-breathing-and-reaching-one-s-physiological-limit-as-causes-of-exercise-induced-dyspnoea
#12
REVIEW
Julie Depiazzi, Mark L Everard
Excessive exercise-induced shortness of breath is a common complaint. For some, exercise-induced bronchoconstriction is the primary cause and for a small minority there may be an alternative organic pathology. However for many, the cause will be simply reaching their physiological limit or be due to a functional form of dysfunctional breathing, neither of which require drug therapy.The physiological limit category includes deconditioned individuals, such as those who have been through intensive care and require rehabilitation, as well as the unfit and the fit competitive athlete who has reached their limit with both of these latter groups requiring explanation and advice...
June 2016: Breathe
https://www.readbyqxmd.com/read/27228382/cardiopulmonary-exercise-performance-is-reduced-in-congenital-diaphragmatic-hernia-survivors
#13
Katarina Bojanić, Ruža Grizelj, Daniel Dilber, Dalibor Šarić, Jurica Vuković, Paolo T Pianosi, David J Driscoll, Toby N Weingarten, Ena Pritišanac, Darrell R Schroeder, Juraj Sprung
BACKGROUND: Congenital diaphragmatic hernia (CDH) is associated with lung hypoplasia. CDH survivors may have pulmonary morbidity that can decrease cardiopulmonary exercise. We aimed to examine whether cardiopulmonary exercise testing (CPET) results differ in CDH survivors versus healthy age-matched controls and whether CPET results among CDH survivors differ according to self-reported daily activity. METHODS: In one medical center in Croatia, CDH survivors-patients with surgically corrected CDH who were alive at age 5 years-were invited to participate in spirometry and CPET...
December 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27187100/fitness-during-breast-cancer-treatment-and-recovery-in-an-athlete-a-case-study
#14
Patrick D Savage, Kim Dittus, Susan G Lakoski
PURPOSE: This is a case study of an aerobically trained, multisport, female athlete (age = 39) diagnosed with stage IIIc human epidermal growth factor receptor 2 positive breast cancer. The focus of the study is on measures of cardiorespiratory fitness (V˙O2peak) through the course of cancer therapy. METHODS: A symptom-limited cardiopulmonary exercise tolerance test was performed to determine V˙O2peak. The tests were performed at five different time points: 1) at diagnosis of breast cancer and before initiating chemotherapy, 2) after completion of chemotherapy (5 months postdiagnosis), 3) 2...
October 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27177545/design-and-evaluation-of-a-ubiquitous-chest-worn-cardiopulmonary-monitoring-system-for-healthcare-application-a-pilot-study
#15
Jiewen Zheng, Congying Ha, Zhengbo Zhang
Ambulatory recording of physiological data will provide us deep insight into the physical condition of patients and athletes, and assessing treatment effects and training performances. This study presents a miniature wearable cardiopulmonary monitoring system called "Smart Chest Strap," which consists of an elastic band worn around the user's chest with integrated sensors, a physiological signals acquisition unit, and a mobile phone. The physiological signals including electrocardiogram, respiratory inductance plethysmograph, and accelerations (ACC) are sampled, digitalized, stored, and simultaneously transmitted to a mobile phone via Bluetooth...
February 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/27073129/right-and-left-ventricular-function-and-mass-in-male-elite-master-athletes-a-controlled-contrast-enhanced-cardiovascular-magnetic-resonance-study
#16
Philipp Bohm, Günther Schneider, Lutz Linneweber, Axel Rentzsch, Nadine Krämer, Hashim Abdul-Khaliq, Wilfried Kindermann, Tim Meyer, Jürgen Scharhag
BACKGROUND: It is under debate whether the cumulative effects of intensive endurance exercise induce chronic cardiac damage, mainly involving the right heart. The aim of this study was to examine the cardiac structure and function in long-term elite master endurance athletes with special focus on the right ventricle by contrast-enhanced cardiovascular magnetic resonance. METHODS AND RESULTS: Thirty-three healthy white competitive elite male master endurance athletes (age range, 30-60 years) with a training history of 29±8 years, and 33 white control subjects pair-matched for age, height, and weight underwent cardiopulmonary exercise testing, echocardiography including tissue-Doppler imaging and speckle tracking, and cardiovascular magnetic resonance...
May 17, 2016: Circulation
https://www.readbyqxmd.com/read/26972264/exercise-testing-who-when-and-why
#17
REVIEW
Nicole Nelson, Chad A Asplund
There are different modalities of exercise testing that can provide valuable information to physicians about patient and athlete fitness and cardiopulmonary status. Cardiopulmonary exercise testing (CPX) is a form of exercise testing that measures ventilatory and gas exchange, heart rate, electrocardiogram, and blood pressures to provide detailed information on the cardiovascular, pulmonary, and muscular systems. This testing allows an accurate quantification of functional capacity/measure of exercise tolerance, diagnosis of cardiopulmonary disease, disease-progression monitoring or response to intervention, and the prescription of exercise and training...
March 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/26821715/case-report-subjective-loss-of-performance-after-pulmonary-embolism-in-an-athlete-beyond-normal-values
#18
Daniel Dumitrescu, Felix Gerhardt, Thomas Viethen, Matthias Schmidt, Eckhard Mayer, Stephan Rosenkranz
BACKGROUND: Chronic thromboembolic pulmonary hypertension (CTEPH) is a progressive disease. For patients with operable CTEPH, there is a clear recommendation for surgical removal of persistent thrombi by pulmonary endarterectomy (PEA). However, without the presence of PH, therapeutic management of chronic thromboembolic disease (CTED) is challenging - especially in highly trained subjects exceeding predicted values of maximal exercise capacity. CASE PRESENTATION: A 43-year-old male athlete reported with progressive exercise limitation since 8 months...
January 28, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/26799589/circulating-mir-21-mir-378-and-mir-940-increase-in-response-to-an-acute-exhaustive-exercise-in-chronic-heart-failure-patients
#19
Tianzhao Xu, Qiulian Zhou, Lin Che, Saumya Das, Lemin Wang, Jinfa Jiang, Guanghe Li, Jiahong Xu, Jianhua Yao, Hongbao Wang, Yue Dai, Junjie Xiao
Congestive heart failure (CHF) is a major cause of hospitalizations, morbidity, and mortality in Western societies. In addition to optimal medical and device therapy, exercise training is an important adjunct treatment option for CHF patients. MicroRNAs (miRNAs, miRs) participate in a variety of physiological and pathological processes. Dynamic regulation of circulating miRNAs during exercise in healthy persons and athletes has recently been documented, however, the response of circulating miRNAs to exercise in CHF patients is undetermined...
March 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/26760783/reduction-in-post-marathon-peak-oxygen-consumption-sign-of-cardiac-fatigue-in-amateur-runners
#20
Ana Paula Rennó Sierra, Anderson Donelli da Silveira, Ricardo Contesini Francisco, Rodrigo Bellios de Mattos Barretto, Carlos Anibal Sierra, Romeu Sergio Meneghelo, Maria Augusta Peduti Dal Molin Kiss, Nabil Ghorayeb, Ricardo Stein
BACKGROUND: Prolonged aerobic exercise, such as running a marathon, produces supraphysiological stress that can affect the athlete's homeostasis. Some degree of transient myocardial dysfunction ("cardiac fatigue") can be observed for several days after the race. OBJECTIVE: To verify if there are changes in the cardiopulmonary capacity, and cardiac inotropy and lusitropy in amateur marathoners after running a marathon. METHODS: The sample comprised 6 male amateur runners...
February 2016: Arquivos Brasileiros de Cardiologia
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