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https://www.readbyqxmd.com/read/29039763/design-of-a-wireless-sensor-system-with-the-algorithms-of-heart-rate-and-agility-index-for-athlete-evaluation
#1
Meina Li, Youn Tae Kim
Athlete evaluation systems can effectively monitor daily training and boost performance to reduce injuries. Conventional heart-rate measurement systems can be easily affected by artifact movement, especially in the case of athletes. Significant noise can be generated owing to high-intensity activities. To improve the comfort for athletes and the accuracy of monitoring, we have proposed to combine robust heart rate and agility index monitoring algorithms into a small, light, and single node. A band-pass-filter-based R-wave detection algorithm was developed...
October 17, 2017: Sensors
https://www.readbyqxmd.com/read/29037088/physical-fitness-and-prior-physical-activity-are-both-associated-with-less-cortisol-secretion-during-psychosocial-stress
#2
Carly J Wood, Angela Clow, Frank Hucklebridge, Robin Law, Nina Smyth
BACKGROUND: Evidence linking fitness and decreased psychosocial stress comes from studies of athletes and typically relies upon self-report measures. Furthermore, there is little evidence regarding the impact of physical activity (PA) prior to a stressor. The aims of this study were to determine whether fitness and prior PA influence cortisol concentrations during psychosocial stress. METHODS: Seventy-five non-athletic participants took part in a submaximal walk prior to the Trier Social Stress Test for Groups (TSST-G)...
October 16, 2017: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/29035985/qt-corrections-for-long-qt-risk-assessment-implications-for-the-preparticipation-examination
#3
David Hadley, David Hsu, David Pickham, Jonathan A Drezner, Victor F Froelicher
BACKGROUND: Because sudden cardiac death (SCD) in the young mainly occur in individuals with structurally normal hearts, improved screening techniques for detecting inherited arrhythmic diseases are needed. The QT interval is an important screening measurement; however, the criteria for detecting an abnormal QT interval are based on Bazett formula and older populations. OBJECTIVE: To define the normal upper limits for QT interval from the electrocardiograms (ECGs) of healthy young individuals, compare the major correction formula and propose new QT interval thresholds for detecting those at risk of SCD...
October 10, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29031332/right-ventricular-function-during-pharmacological-and-exercise-stress-testing-in-horses
#4
A Decloedt, D De Clercq, S Ven, L Vera, G van Loon
The disproportionate rise of pulmonary artery pressure compared to systemic blood pressure during exercise can lead to detrimental right ventricular remodelling in endurance athletes. Horses may act as an extreme model of these athletic cardiovascular adaptations, as they show a three fold increase in pulmonary pressures during exercise. Right ventricular function was examined in ten healthy horses using post-exercise and pharmacological stress echocardiography in a randomised cross-over design. Exercise testing was performed on a treadmill while pharmacological testing was performed using an atropine-dobutamine infusion...
September 2017: Veterinary Journal
https://www.readbyqxmd.com/read/29029207/european-association-of-preventive-cardiology-eapc-and-european-association-of-cardiovascular-imaging-eacvi-joint-position-statement-recommendations-for-the-indication-and-interpretation-of-cardiovascular-imaging-in-the-evaluation-of-the-athlete-s-heart
#5
Antonio Pelliccia, Stefano Caselli, Sanjay Sharma, Cristina Basso, Jeroen J Bax, Domenico Corrado, Antonello D'Andrea, Flavio D'Ascenzi, Fernando M Di Paolo, Thor Edvardsen, Sabiha Gati, Maurizio Galderisi, Hein Heidbuchel, Alain Nchimi, Koen Nieman, Michael Papadakis, Cataldo Pisicchio, Christian Schmied, Bogdan A Popescu, Gilbert Habib, Diederick Grobbee, Patrizio Lancellotti
No abstract text is available yet for this article.
September 23, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29027266/reliable-and-sensitive-physical-testing-of-elite-trapeze-sailors
#6
Jonathan Bay, Jens Bojsen-Møller, Nikolai B Nordsborg
It was investigated, if a newly developed discipline specific test for elite-level trapeze sailors is reli-able and sensitive. Furthermore, the physical demands of trapeze sailing were examined. In part 1, nine national team athletes were accustomed to a simulated sailing test, which subsequently was completed on four occasions to determine test reliability and sensitivity to manipulations in body-weight. Rope-pulling mean power output (MPO), oxygen consumption (VO2 ), heart rate (HR) and blood lactate values were acquired in all trials...
October 13, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29023330/heart-rate-variability-and-training-load-among-national-collegiate-athletic-association-division-1-college-football-players-throughout-spring-camp
#7
Andrew A Flatt, Michael R Esco, Jeff R Allen, James B Robinson, Ryan L Earley, Michael V Fedewa, Amy Bragg, Clay M Keith, Jonathan E Wingo
Flatt, AA, Esco, MR, Allen, JR, Robinson, JB, Earley, RL, Fedewa, MV, Bragg, A, Keith, CM, and Wingo, JE. Heart rate variability and training load among National Collegiate Athletic Association Division 1 college football players throughout spring camp. J Strength Cond Res XX(X): 000-000, 2017-The purpose of this study was to determine whether recovery of cardiac-autonomic activity to baseline occurs between consecutive-day training sessions among positional groups of a collegiate football team during Spring camp...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29022255/acute-and-chronic-response-to-exercise-in-athletes-the-supernormal-heart
#8
Antonello D'Andrea, Tiziana Formisano, Lucia Riegler, Raffaella Scarafile, Raffaella America, Francesca Martone, Marco di Maio, Maria Giovanna Russo, Eduardo Bossone, Maurizio Galderisi, Raffaele Calabrò
During last decades, most studies have examined the exercise-induced remodeling defined as "athlete's heart". During exercise, there is an increased cardiac output that causes morphological, functional, and electrical modification of the cardiac chambers. The cardiac remodeling depends also on the type of training, age, sex, ethnicity, genetic factors, and body size. The two main categories of exercise, endurance and strength, determine different effects on the cardiac remodeling. Even if most sport comprise both strength and endurance exercise, determining different scenarios of cardiac adaptation to the exercise...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28993881/maximal-rate-of-heart-rate-increase-correlates-with-fatigue-recovery-status-in-female-cyclists
#9
Maximillian J Nelson, Clint R Bellenger, Rebecca L Thomson, Eileen Y Robertson, Kade Davison, Daniela Schäfer Olstad, Jonathan D Buckley
PURPOSE: Being able to identify how an athlete is responding to training would be useful to optimise adaptation and performance. The maximal rate of heart rate increase (rHRI), a marker of heart rate acceleration has been shown to correlate with performance changes in response to changes in training load in male athletes; however, it has not been established if it also correlates with performance changes in female athletes. METHODS: rHRI and cycling performance were assessed in six female cyclists following 7 days of light training (LT), 14 days of heavy training (HT) and a 10 day taper period...
October 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28990148/athletes-and-the-aorta-normal-adaptations-and-the-diagnosis-and-management-of-pathology
#10
REVIEW
J Stephen Hedley, Dermot Phelan
Over a hundred years ago, physicians first recognized that participation in regular, vigorous training resulted in enlargement of the heart. Since that time, the term "athlete's heart" has entered the medical lexicon as a global expression encompassing the electrical, functional, and morphological adaptations that develop in response to physical training. Exercise-induced adaptations of the aorta, which is also exposed to large hemodynamic stresses during prolonged endurance exercise or resistance training, are less well recognized...
October 9, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28979908/epicardial-ablation-of-ventricular-tachycardia-in-a-patient-with-arrhythmogenic-right-ventricular-dysplasia-after-failed-conventional-endocardial-ablation-a-case-for-remote-navigation-with-functional-image-integration
#11
Sabine Ernst, Karine Roy, Eric Lim, Glyn Thomas
Arrhythmogenic right ventricular dysplasia (ARVD) is an inheritable heart muscle disease that predominantly affects the right ventricle (RV) and predisposes to ventricular arrhythmias and sudden cardiac death (SCD)(1). The natural history is predominantly related to ventricular electric instability which may lead to arrhythmic SCD, mostly in young people and athletes(2,3), but may progress with significant RV muscle disease and left-ventricular (LV) involvement and can result in right or biventricular heart failure(4)...
December 30, 2016: Global Cardiology Science & Practice
https://www.readbyqxmd.com/read/28977060/minute-ventilation-variability-during-cardiopulmonary-exercise-test-is-higher-in-sedentary-men-than-in-athletes
#12
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/28975231/death-and-cardiac-arrest-in-u-s-triathlon-participants-1985-to-2016-a-case-series
#13
Kevin M Harris, Lawrence L Creswell, Tammy S Haas, Taylor Thomas, Monica Tung, Erin Isaacson, Ross F Garberich, Barry J Maron
Background: Reports of race-related triathlon fatalities have raised questions regarding athlete safety. Objective: To describe death and cardiac arrest among triathlon participants. Design: Case series. Setting: United States. Participants: Participants in U.S. triathlon races from 1985 to 2016. Measurements: Data on deaths and cardiac arrests were assembled from such sources as the U...
September 19, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28957535/exercise-and-the-right-ventricle-a-potential-achilles-heel
#14
Andre La Gerche, Dhrubo J Rakhit, Guido Claessen
Exercise is associated with unequivocal health benefits and results in many structural and functional changes of the myocardium that enhance performance and prevent heart failure. However, intense exercise also presents a significant hemodynamic challenge in which the right-sided heart chambers are exposed to a disproportionate increase in afterload and wall stress that can manifest as myocardial fatigue or even damage if intense exercise is sustained for prolonged periods. This review focuses on the physiological factors that result in a disproportionate load on the right ventricle during exercise and the long-term consequences...
October 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28952837/training-intensity-distribution-over-a-four-year-cycle-in-olympic-champion-rowers-different-roads-lead-to-rio
#15
Daniel J Plews, Paul B Laursen
The purpose of this study was to compare the training intensity distribution (TID) of the undefeated world champion male rowing New Zealand (kiwi) pair over a four-year Olympic cycle, across training phases, training years, and between individuals. Training data, including heart rate and boat speed, were recorded in the athletes rowing in the same boat between March 2013 and August 2016, ending with the Rio Olympics final. Progressive exercise tests assessed first (LT1) and second (LT2) lactate thresholds and associated heart rates, to determine the percentage of training performed below, between and above these demarcation points...
September 27, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28952828/locomotor-and-heart-rate-responses-of-floaters-during-small-sided-games-in-elite-soccer-players-effect-of-pitch-size-and-inclusion-of-goal-keepers
#16
Mathieu Lacome, Ben M Simpson, Yannick Cholley, Martin Buchheit
PURPOSE: To (1) compare the locomotor and heart rate responses between floaters and regular players during both small and large small sided games (SSGs) and (2) examine whether the type of game (i.e., game simulation vs possession game) affects the magnitude of the difference between floaters and regular players. METHODS: Data were collected in 41 players belonging to an elite French football team during three consecutive seasons (2014-2017). 5-Hz GPS were used to collect all training data, with the Athletic Data Innovation analyser (v5...
September 27, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28948538/the-right-heart-acute-and-chronic-issues
#17
REVIEW
Timothy W Churchill, Aaron L Baggish
Cardiovascular remodeling in response to sustained moderate and high-intensity exercise is a well-established phenomenon. Following more than a century of work focused on the left ventricle (LV), remodeling of the right side of the heart has recently become a topic of considerable scientific and clinical interest. Morphologic and functional changes have now been well documented in the right ventricle (RV) after isolated bouts of endurance exercise and in association with long-term sustained training. Although exercise-induced cardiac remodeling is classically viewed as an adaptive, clinically benign process, it has recently been hypothesized that repetitive bouts of intense exercise may trigger pathologic changes in the RV characterized by patchy fibrosis and a predisposition to arrhythmia...
September 25, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28940670/deoxygenation-of-inspiratory-muscles-during-cycling-hyperpnoea-and-loaded-breathing-in-health-and-disease-a-systematic-review
#18
REVIEW
Takako Tanaka, Nada Basoudan, Luana T Melo, Lisa Wickerson, Laurent J Brochard, Ewan C Goligher, W Darlene Reid
Assessing inspiratory muscle deoxygenation and blood flow can provide insight into anaerobic stress, recruitment strategies and mechanisms of inspiratory muscle limitation. Therefore, this review aimed to synthesize measurements of inspiratory muscle oxyhaemoglobin (O2 Hb), deoxyhaemoglobin (HHb), blood volume and flow of the inspiratory muscles acquired via near-infrared spectroscopy (NIRS) during cycling, hyperpnoea and loaded breathing in healthy non-athletes, healthy athletes and patients with chronic obstructive pulmonary disease (COPD) or chronic heart failure (CHF)...
September 22, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28933715/rating-of-perceived-exertion-for-quantification-of-training-and-combat-loads-during-combat-sport-specific-activities-a-short-review
#19
Maamer Slimani, Philip Davis, Emerson Franchini, Wassim Moalla
The aim of this short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport-specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs. training), combat rounds, age of participants and muscle groups, and their correlation with physiological variables (i.e., blood lactate concentration [La] and heart rate [HR]). The current review shows higher RPE in a match of mixed martial arts (MMAs) than Brazilian jiu-jitsu and kickboxing matches and during the competitive period compared with the precompetitive period...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28912183/arrhythmogenic-cardiomyopathy
#20
REVIEW
Domenico Corrado, Cristina Basso, Daniel P Judge
Arrhythmogenic cardiomyopathy is an inherited heart muscle disorder, predisposing to sudden cardiac death, particularly in young patients and athletes. Pathological features include loss of myocytes and fibrofatty replacement of right ventricular myocardium; biventricular involvement is often observed. It is a cell-to-cell junction cardiomyopathy, typically caused by genetically determined abnormalities of cardiac desmosomes, which leads to detachment of myocytes and alteration of intracellular signal transduction...
September 15, 2017: Circulation Research
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