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Long term athlete development

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https://www.readbyqxmd.com/read/29303682/the-organised-chaos-of-english-adolescent-rugby-union-influence-of-weekly-match-frequency-on-the-variability-of-match-and-training-loads
#1
Padraic J Phibbs, Ben Jones, Gregory Roe, Dale Read, Joshua Darrall-Jones, Jonathon Weakley, Andrew Rock, Kevin Till
The aims of this study were to determine the variability of weekly match and training loads in adolescent rugby union players across a competitive season, and to investigate the effect of match frequency on load distribution across different activities. Internal match and training load data (i.e. session-rating of perceived exertion (sRPE)) were collected daily from 20 players from a regional academy across a 14-week season. Data were analysed using a mixed-effects linear model, and variability was reported as a coefficient of variation (CV)...
January 5, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29280684/sport-related-concussive-convulsions-a-systematic-review
#2
Nicholas O Kuhl, Aaron M Yengo-Kahn, Hannah Burnette, Gary S Solomon, Scott L Zuckerman
OBJECTIVES: The incidence of sport-related concussion (SRC) continues to rise. Presentations of concussed athletes vary from subtle symptoms to notable signs. Between the 4th and 5th iterations of the Concussion in Sport Group (CISG) guidelines, concussive convulsions were removed as a modifying factor, but little evidence or discussion supported this change. While considerable research exists regarding post-traumatic epilepsy in moderate to severe traumatic brain injury, convulsions following SRC are relatively understudied...
December 27, 2017: Physician and Sportsmedicine
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...
December 6, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29202937/youth-sport-related-concussions-perceived-and-measured-baseline-knowledge-of-concussions-among-community-coaches-athletes-and-parents
#4
Katherine N Nanos, John M Franco, Dirk Larson, Kristin Mara, Edward R Laskowski
OBJECTIVE: To assess concussion knowledge of athletes, coaches, and parents/guardians in a community setting and to understand trends/gaps in knowledge among subgroups to tailor efforts toward creating educational interventions. PARTICIPANTS AND METHODS: This prospective cross-sectional study involved 262 individuals (142 [55%] female): 115 athletes participating in noncontact and contact sports (ages 13-19 years), 15 coaches, and 132 parents. Recruitment occurred from August 30, 2015, through August 30, 2016, at 3 local high schools...
December 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29164130/comparison-of-an-innovative-rehabilitation-combining-reduced-conventional-rehabilitation-with-balneotherapy-and-a-conventional-rehabilitation-after-anterior-cruciate-ligament-reconstruction-in-athletes
#5
Laetitia Peultier-Celli, Didier Mainard, Frank Wein, Nicolas Paris, Patrick Boisseau, Alexandre Ferry, René Gueguen, Isabelle Chary-Valckenaere, Jean Paysant, Philippe Perrin
Background: Instability of the knee, related to anterior cruciate ligament injury, is treated by surgical reconstruction. During recovery, a loss of proprioceptive input can have a significant impact. Few studies have evaluated the benefits of rehabilitation of the knee in aquatic environment on functional outcomes. Objective: This study aimed to compare an innovative rehabilitation protocol combining reduced conventional rehabilitation with aquatic rehabilitation, with a conventional rehabilitation, according to the National French Health Authority, in terms of kinetics, development of proprioceptive skills, and functional improvement of the knee...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/29158621/loaded-and-unloaded-jump-performance-of-top-level-volleyball-players-from-different-age-categories
#6
Katia Kitamura, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, Ronaldo Finotti, Fábio Yuzo Nakamura, Irineu Loturco
The aim of this study was to investigate the differences in loaded and unloaded jump performances between different age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermovement jump (CMJ) and CMJ with arm swing (CMJa) and mean propulsive velocity (MPV) in the loaded jump squat exercise with 40% of the athlete's body mass were compared among the different age categories, considering body mass as a covariate...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29103039/the-need-to-separate-chronic-traumatic-encephalopathy-neuropathology-from-clinical-features
#7
Grant L Iverson, C Dirk Keene, George Perry, Rudolph J Castellani
There is tremendous recent interest in chronic traumatic encephalopathy (CTE) in former collision sport athletes, civilians, and military veterans. This critical review places important recent research results into a historical context. In 2015, preliminary consensus criteria were developed for defining the neuropathology of CTE, which substantially narrowed the pathology previously reported to be characteristic. There are no agreed upon clinical criteria for diagnosis, although sets of criteria have been proposed for research purposes...
October 30, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29045058/loop-mediated-isothermal-amplification-lamp-as-an-alternative-to-pcr-a-rapid-on-site-detection-of-gene-doping
#8
Olivier Salamin, Tiia Kuuranne, Martial Saugy, Nicolas Leuenberger
Innovation in medical research has been diverted at multiple occasions to enhance human performance. The predicted great progress in gene therapy has raised some concerns regarding its misuse in the world of sports (gene doping) for several years now. Even though there is no evidence that gene doping has ever been used in sports, the continuous improvement of gene therapy techniques increases the likelihood of abuse. Therefore, since 2004, efforts have been invested by the anti-doping community and WADA for the development of detection methods...
October 17, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28988514/long-term-effects-of-acoustic-reafference-training-art
#9
Alexandra Pizzera, Tanja Hohmann, Lukas Streese, Anja Habbig, Markus Raab
In sport visual feedback is often used to enhance performance, mostly neglecting the auditory modality. However, athletes produce natural sounds when they move (acoustic reafferences) which they perceive and use to control their movements. We examined the short- and long-term effects of a training intervention on a complex movement by using acoustic reafferences. Natural step sounds produced during hurdling were recorded and played back to the participants immediately before each trial, with an increase (fast group), decrease (slow group), or no manipulation (control group) in the tempo...
November 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28976815/dissemination-and-implementation-strategies-of-lower-extremity-preventive-training-programs-in-youth-a-clinical-review
#10
REVIEW
Lindsay J DiStefano, Barnett S Frank, Hayley J Root, Darin A Padua
CONTEXT: Neuromuscular preventive training programs effectively reduce injury and improve performance in youth athletes. However, program effectiveness is directly linked to program compliance, fidelity, and dosage. Preventive training programs are not widely adopted by youth sport coaches. One way to promote widespread dissemination and compliance is to identify implementation strategies that influence program adoption and maintenance. It is unknown how previously published programs have followed the elements of an implementation framework...
November 2017: Sports Health
https://www.readbyqxmd.com/read/28954799/a-systematic-review-of-prospective-epidemiological-research-into-injury-and-illness-in-olympic-combat-sport
#11
REVIEW
Sally J Bromley, Michael K Drew, Scott Talpey, Andrew S McIntosh, Caroline F Finch
BACKGROUND: Combat sports involve body contact through striking, kicking and/or throwing. They are anecdotally referred to as 'dangerous', yet long-term investigation into specific injury rates is yet to be explored. OBJECTIVE: To describe incidence and prevalence of injury and illness within Olympic combat sports and to investigate risk of bias of prospective injury and illness research within these sports. METHODS: We systematically searched literature published up until May 2016...
January 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28943009/midterm-and-long-term-follow-up-in-competitive-athletes-undergoing-thoracic-outlet-decompression-for-neurogenic-thoracic-outlet-syndrome
#12
William Shutze, Brad Richardson, Ryan Shutze, Kimberly Tran, Allen Dao, Gerald O Ogola, Allan Young, Greg Pearl
BACKGROUND: Neurogenic thoracic outlet syndrome (NTOS) results from compression of the brachial plexus by the clavicle, first rib, and scalene muscles and may develop secondary to repetitive motion of the upper extremity. Athletes routinely perform repetitive motions, and sports requiring significant arm and shoulder use may put the participant at increased risk for NTOS. Competitive athletes who develop NTOS may require first rib resection and scalenectomy (FRRS) for symptomatic relief...
December 2017: Journal of Vascular Surgery
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
#13
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/28913725/exercise-and-competitive-sport-physiology-adaptations-and-uncertain-long-term-risks
#14
REVIEW
Patrick T Gleason, Jonathan H Kim
The benefits of regular and moderate exercise training on cardiovascular outcomes have been well established. In addition, strenuous exercise training leads to corollary cardiac structural and functional adaptations that are sport-specific and facilitate athletic performance. In this review, the normal physiologic and hemodynamic changes that occur during exercise and the subsequent differential exercise-induced cardiac remodeling patterns that develop will be discussed. Paradoxically, recent data have raised concern about the long-term impact of higher doses of physical activity and exercise on mortality and cardiovascular health outcomes...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28912731/long-term-athletic-development-in-youth-alpine-ski-racing-the-effect-of-physical-fitness-ski-racing-technique-anthropometrics-and-biological-maturity-status-on-injuries
#15
Lisa Müller, Carolin Hildebrandt, Erich Müller, Christian Fink, Christian Raschner
Alpine ski racing is known to be a sport with a high risk of injuries. Because most studies have focused mainly on top-level athletes and on traumatic injuries, limited research exists about injury risk factors among youth ski racers. The aim of this study was to determine the intrinsic risk factors (anthropometrics, biological maturity, physical fitness, racing technique) for injury among youth alpine ski racers. Study participants were 81 youth ski racers attending a ski boarding school (50 males, 31 females; 9-14 years)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28878587/arrhythmogenic-right-ventricular-cardiomyopathy-in-an-endurance-athlete-presenting-with-ventricular-tachycardia-and-normal-right-ventricular-function
#16
Jeffrey S Hedley, Ibhar Al Mheid, Zoubin Alikhani, Maria A Pernetz, Jonathan H Kim
Arrhythmogenic right ventricular cardiomyopathy, a genetically inherited disease that results in fibrofatty replacement of normal cardiac myocytes, has been associated with sudden cardiac death in athletes. Long-term participation in endurance exercise hastens the development of both the arrhythmic and structural arrhythmogenic right ventricular cardiomyopathy phenotypes. We describe the unusual case of a 34-year-old, symptomatic, female endurance athlete who had arrhythmogenic right ventricular cardiomyopathy in the presence of a structurally normal right ventricle...
August 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28859995/glymphatic-system-disruption-as-a-mediator-of-brain-trauma-and-chronic-traumatic-encephalopathy
#17
REVIEW
Molly J Sullan, Breton M Asken, Michael S Jaffee, Steven T DeKosky, Russell M Bauer
Traumatic brain injury (TBI) is an increasingly important issue among veterans, athletes and the general public. Difficulties with sleep onset and maintenance are among the most commonly reported symptoms following injury, and sleep debt is associated with increased accumulation of beta amyloid (Aβ) and phosphorylated tau (p-tau) in the interstitial space. Recent research into the glymphatic system, a lymphatic-like metabolic clearance mechanism in the central nervous system (CNS) which relies on cerebrospinal fluid (CSF), interstitial fluid (ISF), and astrocytic processes, shows that clearance is potentiated during sleep...
August 30, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28841573/pediatric-providers-attitudes-and-practices-regarding-concussion-diagnosis-and-management
#18
Khalida Itriyeva, Ronald Feinstein, Linda Carmine
Background Concussions, a form of mild traumatic brain injury, are a current "hot topic" in sports and medicine, with current research focusing on diagnosis, treatment, and the long-term effects of repeated concussions on development of chronic traumatic encephalopathy. Concussions represent 8.9% of all high school athletic injuries, and pediatricians see many of these patients in their practices, however evolving guidelines and recommendations have resulted in varying practices among providers. Objective To assess how local pediatricians in New York Chapter 2 of the American Academy of Pediatrics (AAP) diagnose and treat concussion patients, and to evaluate the need for continuing education in this area...
August 25, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28810965/the-benefits-and-risks-of-energy-drinks-in-young-adults-and-military-service-members
#19
Julianne Manchester, Inbal Eshel, Donald W Marion
INTRODUCTION: Energy drinks (EDs) have become an integral part of the young adult, athletic, and military culture. Many athletes are convinced that EDs enhance performance, and service members as well as college students frequently use EDs as stimulants to counter sleep deprivation, or to improve academic performance. However, concerns have been raised by some military leaders about potential adverse effects of EDs. MATERIALS AND METHODS: A needs assessment survey of a convenience sample of military health care providers was conducted and identified EDs as a top knowledge need for those providers working in the area of traumatic brain injury (TBI)...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28795075/the-effect-of-menstrual-cycle-and-contraceptives-on-acl-injuries-and-laxity-a-systematic-review-and-meta-analysis
#20
REVIEW
Simone D Herzberg, Makalapua L Motu'apuaka, William Lambert, Rongwei Fu, Jacqueline Brady, Jeanne-Marie Guise
BACKGROUND: Women are at substantially greater risk for anterior cruciate ligament (ACL) injuries than are men. PURPOSE: To conduct a systematic review and meta-analysis of the literature to clarify the effect of the menstrual cycle and contraceptives on the laxity of and noncontact injuries to the ACL. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: Searches were conducted using MEDLINE (1946-August 2016), the Cochrane Library Database, clinical trial registries, and related reference lists...
July 2017: Orthopaedic Journal of Sports Medicine
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