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https://www.readbyqxmd.com/read/29485323/the-effect-of-one-week-of-a-multi-ingredient-dietary-pre-workout-supplement-on-resting-and-post-acute-resistance-exercise-vascular-function
#1
Austin T Robinson, Adriana Mazzuco, Ahmad S Sabbahi, Audrey Borghi-Silva, Shane A Phillips
Dietary pre-workout supplements are popular among recreational exercisers and athletes. However, the effects of these supplements on the vasculature, both at rest and during exercise, are not well studied. Therefore, the purpose of this study was to determine the effect of one week of supplementation with a multi-ingredient dietary pre-workout supplement on measures of vascular function at rest and immediately following acute resistance exercise in young, recreationally active adults. Twelve participants (9 males, 3 females; age: 24...
February 27, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29431308/diagnostic-and-clinical-significance-of-t-wave-inversion-in-athletes
#2
REVIEW
Anat Milman, Gad Keren
Electrocardiography abnormalities are a common finding in athletes. To facilitate the differentiation of physiological adaptation versus pathological remodeling, a series of guidelines has emerged in the past decade that attempt to improve specificity while maintaining a high sensitivity. Recently, T wave inversion in the athletic population gained more attention, resulting in accelerated research leading to novel findings not yet integrated into clinical practice. We aim to simplify the knowledge to date and integrate it into one easy to use practical flowchart...
February 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29214319/electrocardiographic-findings-in-national-basketball-association-athletes
#3
Marc P Waase, R Kannan Mutharasan, William Whang, Marco R DiTullio, John P DiFiori, Lisa Callahan, Jimmie Mancell, Dermot Phelan, Allan Schwartz, Shunichi Homma, David J Engel
Importance: While it is known that long-term intensive athletic training is associated with cardiac structural changes that can be reflected on surface electrocardiograms (ECGs), there is a paucity of sport-specific ECG data. This study seeks to clarify the applicability of existing athlete ECG interpretation criteria to elite basketball players, an athlete group shown to develop significant athletic cardiac remodeling. Objective: To generate normative ECG data for National Basketball Association (NBA) athletes and to assess the accuracy of athlete ECG interpretation criteria in this population...
January 1, 2018: JAMA Cardiology
https://www.readbyqxmd.com/read/29128143/influence-of-type-of-sport-on-cardiac-repolarization-assessed-by-electrocardiographic-t-wave-morphology-combination-score
#4
Susanne Glasius Tischer, Claus Graff, Christina Ellervik, Eva Prescott, Jørgen K Kanters, Hanne Kruuse Rasmusen
INTRODUCTION: Interpreting repolarization changes in the electrocardiograms of athletes present a clinical challenge. AIM: Assessment of cardiac repolarization by T-wave morphology using the Morphology Combination Score (MCS), and evaluate how this quantitative description of T-wave morphology was influenced by the sport performed. MATERIALS AND METHODS: Digital electrocardiograms of 469 young elite athletes were analyzed for T-wave asymmetry, flatness and notching, and combined in the MCS...
September 29, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28651660/sudden-improvement-in-ventricular-repolarization-abnormality-after-a-short-detraining-period-in-an-athlete
#5
Noriko Motoki, Yohei Akazawa, Akira Hachiya, Yuji Inaba
We describe the case of a 17-year-old male soccer player with T-wave inversion in precordial leads in resting electrocardiography, which also disclosed sinus bradycardia, early repolarization, and increased QRS voltage. These findings strongly suggested cardiomyopathy. The patient's T-wave inversion disappeared during only 2 weeks of detraining, and it re-appeared 2 weeks after resumption of intensive training. This sudden change in electrocardiographic parameters over a short period helped in identifying the adolescent as having athlete's heart...
June 27, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28363973/electrical-and-structural-adaptations-of-the-paediatric-athlete-s-heart-a-systematic-review-with-meta-analysis
#6
REVIEW
Gavin McClean, Nathan R Riding, Clare L Ardern, Abdulaziz Farooq, Guido E Pieles, Victoria Watt, Carmen Adamuz, Keith P George, David Oxborough, Mathew G Wilson
AIM: To describe the electrocardiographic (ECG) and echocardiographic manifestations of the paediatric athlete's heart, and examine the impact of age, race and sex on cardiac remodelling responses to competitive sport. DESIGN: Systematic review with meta-analysis. DATA SOURCES: Six electronic databases were searched to May 2016: MEDLINE, PubMed, EMBASE, Web of Science, CINAHL and SPORTDiscus. INCLUSION CRITERIA: (1) Male and/or female competitive athletes, (2) participants aged 6-18 years, (3) original research article published in English language...
March 31, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28361571/correlation-between-ecg-changes-and-early-left-ventricular-remodeling-in-preadolescent-footballers
#7
M Zdravkovic, B Milovanovic, S Hinic, I Soldatovic, T Durmic, G Koracevic, S Prijic, O Markovic, B Filipovic, D Lovic
The aim of this study was to assess the early electrocardiogram (ECG) changes induced by physical training in preadolescent elite footballers. This study included 94 preadolescent highly trained male footballers (FG) competing in Serbian Football League (minimum of 7 training hours/week) and 47 age-matched healthy male controls (less than 2 training hours/week) (CG). They were screened by ECG and echocardiography at a tertiary referral cardio center. Sokolow-Lyon index was used as a voltage electrocardiographic criterion for left ventricular hypertrophy diagnosis...
March 1, 2017: Physiology International
https://www.readbyqxmd.com/read/28350576/absence-of-resting-cardiovascular-dysfunction-in-middle-aged-endurance-trained-athletes-with-exaggerated-exercise-blood-pressure-responses
#8
Katharine D Currie, Ryan T Sless, Catherine F Notarius, Scott G Thomas, Jack M Goodman
OBJECTIVE: Untrained individuals with exaggerated blood pressure (EBP) responses to graded exercise testing are characterized as having resting dysfunction of the sympathetic and cardiovascular systems. The purpose of this study was to determine the resting cardiovascular state of endurance-trained individuals with EBP through a comparison of normotensive athletes with and without EBP. METHODS: EBP was defined as a maximal systolic blood pressure (SBP) at least 190 mmHg and at least 210 mmHg for women and men respectively, in response to a graded exercise test...
August 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28138766/-evidence-based-therapy-for-tendinopathy-of-the-knee-joint-which-forms-of-therapy-are-scientifically-proven
#9
REVIEW
H Horstmann, J D Clausen, C Krettek, T S Weber-Spickschen
Tendinopathy in the region of the knee joint is a common pathological disorder. People active in sports, in particular, have a high probability of suffering from tendinopathy. Despite its high clinical relevance, the level of evidence of therapy options for tendinopathy in the knee region differs greatly. This review gives an overview of current evidence levels for therapy options in tendinopathy of the quadriceps, patellar and pes anserinus insertion tendons as well as of the distal iliotibial tract tendon...
March 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28102875/prevalence-of-abnormal-electrocardiograms-in-swiss-elite-athletes-detected-with-modern-screening-criteria
#10
Tilman Perrin, Lukas Daniel Trachsel, Simon Schneiter, Andrea Menafoglio, Silvia Albrecht, Tony Pirrello, Prisca Eser, Laurent Roten, Boris Gojanovic, Matthias Wilhelm
AIMS OF THE STUDY: Sudden cardiac arrest in athletes is a rare but dramatic event. The value of a routine electrocardiogram (ECG) during preparticipation screening (PPS) remains controversial, partly because of the relatively high number of false positive findings. Our study aimed to evaluate the prevalence of abnormal ECGs in consecutive Swiss elite athletes, overall and with regard to different sports classes, using modern screening criteria. METHODS: We analysed the 12-lead resting ECGs of high-level elite athletes (age ≥14 years) recorded at the Swiss Olympic Medical Centre Magglingen between 2013 and 2016 during routine PPS...
January 19, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28057231/anterior-t-wave-inversion-in-young-white%C3%A2-athletes-and-nonathletes-prevalence-and-significance
#11
MULTICENTER STUDY
Aneil Malhotra, Harshil Dhutia, Sabiha Gati, Tee-Joo Yeo, Helder Dores, Rachel Bastiaenen, Rajay Narain, Ahmed Merghani, Gherardo Finocchiaro, Nabeel Sheikh, Alexandros Steriotis, Abbas Zaidi, Lynne Millar, Elijah Behr, Maite Tome, Michael Papadakis, Sanjay Sharma
BACKGROUND: Anterior T-wave inversion (ATWI) on electrocardiography (ECG) in young white adults raises the possibility of cardiomyopathy, specifically arrhythmogenic right ventricular cardiomyopathy (ARVC). Whereas the 2010 European consensus recommendations for ECG interpretation in young athletes state that ATWI beyond lead V1 warrants further investigation, the prevalence and significance of ATWI have never been reported in a large population of asymptomatic whites. OBJECTIVES: This study investigated the prevalence and significance of ATWI in a large cohort of young, white adults including athletes...
January 3, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28034442/electrocardiographic-changes-induced-by-endurance-training-and-pubertal-development-in-male-children
#12
Flavio D'Ascenzi, Marco Solari, Francesca Anselmi, Francesca Valentini, Riccardo Barbati, Paola Palmitesta, Marta Focardi, Marco Bonifazi, Sergio Mondillo
Training-induced electrocardiographic changes are common in adult athletes. However, a few data are available on electrocardiogram (ECG) in preadolescent athletes and little is known about the potential changes induced by training on 12-lead electrocardiogram (ECG) at rest. Twelve-lead ECGs at rest and complete echocardiographic examinations were performed in 94 children (57 endurance athletes, 37 sedentary controls; mean age 10.8 ± 0.2 and 10.2 ± 0.2 years, respectively) at baseline and after 5 months of growth and training in athletes and of natural growth in controls...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/27847560/left-ventricular-false-tendons-and-electrocardiogram-repolarization-abnormalities-in-healthy-young-subjects
#13
Zlatan Lazarevic, Emanuela Ciminelli, Federico Quaranta, Fabio Sperandii, Emanuele Guerra, Fabio Pigozzi, Paolo Borrione
AIM: To describe echocardiographically left ventricular false tendon characteristics and the correlation with ventricular repolarization abnormalities in young athletes. METHODS: Three hundred and sixteen healthy young athletes from different sport disciplines were evaluated from 2009 to 2011 during routine screening for agonistic sports eligibility. All subjects, as part of standard pre-participation screening medical evaluation, underwent a basal and post step test 12-lead electrocardiogram (ECG)...
October 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27625762/prevalence-of-cardiovascular-disorders-among-iranian-elite-athletes
#14
Shahin Salehi, Farhad Moradi Shahpar, Gholamreza Norouzi, Farshad Ghazalian, Mehrshad Poursaid Esfehani, Amir Hosein Abedi Yekta
BACKGROUND: Athletes' health is an important issue and for promoting it, pre-participation examination (PPE) is widely performed by responsible bodies around the world. OBJECTIVES: This study was to determine prevalence of cardiovascular disorders among athletes participating in the Asian games and answering the question whether the electrocardiogram (ECG) is a necessary part of pre-participation examination (PPE) for prevention of sudden cardiac death. MATERIALS AND METHODS: All athletes participated at Asian games came to sports medicine federation for a PPE including a comprehensive questionnaire, physical examination and ECG...
June 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/27617087/arrhythmogenic-cardiomyopathy-electrical-and-structural-phenotypes
#15
Deniz Akdis, Corinna Brunckhorst, Firat Duru, Ardan M Saguner
This overview gives an update on the molecular mechanisms, clinical manifestations, diagnosis and therapy of arrhythmogenic cardiomyopathy (ACM). ACM is mostly hereditary and associated with mutations in genes encoding proteins of the intercalated disc. Three subtypes have been proposed: the classical right-dominant subtype generally referred to as ARVC/D, biventricular forms with early biventricular involvement and left-dominant subtypes with predominant LV involvement. Typical symptoms include palpitations, arrhythmic (pre)syncope and sudden cardiac arrest due to ventricular arrhythmias, which typically occur in athletes...
August 2016: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/27516375/electrocardiograms-of-children-and-adolescents-practicing-non-competitive-sports-normal-limits-and-abnormal-findings-in-a-large-european-cohort-evaluated-by-telecardiology
#16
Giuseppe Molinari, Natale Daniele Brunetti, Luigi Biasco, Sandro Squarcia, Yvonne Cristoforetti, Riccardo Bennicelli, Cecilia Del Vecchio, Cecilia Viacava, Carla Giustetto, Fiorenzo Gaita
OBJECTIVE: The objective of this study was to derive normal electrocardiographic values and to report the abnormal findings in a large contemporary European cohort of physically active children and young adolescents. METHODS: In a 3-month period, data derived from subjects aged between 3 and 14 years and referred to the Telecardiology Centre (Genoa, Italy) for electrocardiogram (ECG) evaluation as pre-participation screening for non-competitive sports were analyzed...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/27346569/electrocardiography-screening-for-hypertrophic-cardiomyopathy
#17
COMPARATIVE STUDY
Matthew J Campbell, Xuefu Zhou, Chia Han, Hedayat Abrishami, Gregory Webster, Christina Y Miyake, Timothy K Knilans, Richard J Czosek
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is the leading cause of sudden cardiac death in athletes. However, preparticipation electrocardiogram (ECG) screening has been criticized for failing to meet cost-effectiveness thresholds, in part because of high false-positive rates. We sought to evaluate whether a highly automated software algorithm could be used for a high throughput, population-based screening program and address several of the limitations seen with population-based screening METHODS: A proprietary computed algorithm was created based on both voltage- as well as Seattle-based ECG criteria...
September 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27339181/lifelong-strength-training-mitigates-the-age-related-decline-in-efferent-drive
#18
COMPARATIVE STUDY
Runar Unhjem, Mona Nygård, Lene T van den Hoven, Simranjit K Sidhu, Jan Hoff, Eivind Wang
Recently, we documented age-related attenuation of efferent drive to contracting skeletal muscle. It remains elusive if this indication of reduced muscle strength is present with lifelong strength training. For this purpose, we examined evoked potentials in the calf muscles of 11 [71 ± 4 (SD) yr] strength-trained master athletes (MA) contrasted with 10 (71 ± 4 yr) sedentary (SO) and 11 (73 ± 6 yr) recreationally active (AO) old subjects, as well as 9 (22 ± 2 yr) young controls. As expected, MA had higher leg press maximal strength (MA, 185 ± 32 kg; AO, 128 ± 15 kg; SO, 106 ± 11 kg; young, 147 ± 22 kg, P < 0...
August 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27276869/electrocardiography-in-pre-participation-screening-and-current-guidelines-for-participation-in-competitive-sports
#19
Ljubica Georgijević, Lana Andrić
Electrocardiography (ECG) is especially significant in pre-participation screening due to its ability to discover or to rise a suspicion for certain cardiovascular diseases and conditions that represent a serious health risk in athletes. Common, conditionally benign and training related ECG changes are sinus bradycardia and sinus arrhythmia, first degree atrioventricular block, incomplete right bundle branch block, benign early repolarization, and isolated QRS voltage criteria for left ventricular enlargement...
January 2016: Srpski Arhiv za Celokupno Lekarstvo
https://www.readbyqxmd.com/read/27239638/chronic-anabolic-androgenic-steroid-usage-associated-with-acute-coronary-syndrome-in-bodybuilder
#20
Ertan Sonmez, Kenan Ahmet Turkdogan, Cahit Yilmaz, Sitki Kucukbuzcu, Abuzer Ozkan, Ozgur Sogutt
INTRODUCTION: It has been argued in current studies that anabolic androgenic steroids (AAS) are misused by a great number of bodybuilders and athletes. However, there is diverse and often conflicting scientific data on the cardiac and metabolic complications caused by the misuse of AAS. There may be various reasons for myocardial infarction (MI) with normal coronary arteries. However, for the majority of patients, the exact cause is still unknown. CASE REPORT: A 32 year-old male who was complaining about severe chest pain was admitted to our emergency department...
March 2016: Turkish Journal of Emergency Medicine
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