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https://www.readbyqxmd.com/read/29051906/intra-articular-physeal-fractures-of-the-distal-femur-a-frequently-missed-diagnosis-in-adolescent-athletes
#1
Andrew T Pennock, Henry B Ellis, Samuel C Willimon, Charles Wyatt, Samuel E Broida, M Morgan Dennis, Tracey Bastrom
BACKGROUND: Intra-articular physeal fractures of the distal femur are an uncommon injury pattern, with only a few small case series reported in the literature. PURPOSE: To pool patients from 3 high-volume pediatric centers to better understand this injury pattern, to determine outcomes of surgical treatment, and to assess risk factors for complications. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A multicenter retrospective review of all patients presenting with an intra-articular physeal fracture between 2006 and 2016 was performed...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051874/hamulus-stress-fracture-in-a-batsman-an-unusual-injury-in-cricket-a-case-report-and-review-of-literature
#2
M S Dhillon, Rakesh John, Himmat Dhillon, Sidak Dhillon, Sharad Prabhakar
INTRODUCTION: Hamulus fractures are uncommon injuries constituting 2-4% of carpal fractures and are usually reported in athletes. Stress fractures of hamulus are even rarer and very few cases have been reported till date. In this case report, we present the first documented case of stress fracture of hamulus in a cricket batsman and review the existing literature on hamulus fractures, both acute and stress fractures, in sportspersons in general. CASE REPORT: A 23-year-old, right-handed, cricket batsman presented with pain in the hypothenar region of his left hand of 7 weeks duration...
May 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29051334/case-studies-in-physiology-the-biomechanics-of-the-fastest-sprinter-with-a-unilateral-transtibial-amputation
#3
Owen N Beck, Alena Marie Grabowski
People have debated whether athletes with transtibial amputations should compete with non-amputees in track events despite insufficient information regarding how the use of running-specific prostheses affects athletic performance. Thus, we sought to quantify the spatio-temporal variables, ground reaction forces, and spring-mass mechanics of the fastest athlete with a unilateral transtibial amputation using an RSP to reveal how he adapts his biomechanics to achieve elite running speeds. Accordingly, we measured ground reaction forces during treadmill running trials spanning 2...
October 19, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29051169/epidemiology-of-injuries-in-juniors-participating-in-top-level-karate-competition-a-prospective-cohort-study
#4
Dušana Čierna, Merce Barrientos, Carlos Agrasar, Rafael Arriaza
BACKGROUND: Karate is a popular combat semi-contact sport among juniors, but there are only few studies available on the epidemiology of injuries in karate junior athletes. AIM: The aims of this study were to determine the incidence and pattern of injuries in top-level karate competition for athletes aged 16 to 20 years, and to compare injury rates between age groups (ie, under 18-year-old [U18] and under 21-year-old [U21]) and genders, following the introduction of new weight categories...
October 19, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051166/epidemiology-of-imaging-detected-tendon-abnormalities-in-athletes-participating-in-the-rio-de-janeiro-2016-summer-olympics
#5
Mohamed Jarraya, Michel D Crema, Lars Engebretsen, Oleg M Teytelboym, Daichi Hayashi, Frank W Roemer, Abdalla Y Skaf, Ali Guermazi
BACKGROUND: Tendon abnormalities are prevalent among both elite and non-elite athletes. Cross-sectional imaging modalities are used to confirm and evaluate the severity of such lesions. AIM: To describe the demographics, prevalence, anatomical location and characteristics of tendon abnormalities in athletes who participated in the Rio de Janeiro 2016 Summer Olympic Games. METHODS: We recorded all sports injuries reported by the National Olympic Committee (NOC) medical teams and the Organizing Committee medical staff during the Rio 2016 Summer Olympics...
October 19, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29050742/-sudden-cardiac-death-and-anomalous-connections-of-the-coronary-arteries-what-is-known-and-what-is-unknown
#6
P Aubry, X Halna du Fretay, P Degrell, V Waldmann, N Karam, E Marijon
Some anomalous connections of the coronary arteries may be associated with a risk of sudden cardiac death. In opposite with others cardiac diseases at risk of sudden cardiac death, the relationship between these congenital abnormalities and the risk of sudden cardiac death are not well understood. A correction of the anomaly is generally indicated after an aborted sudden cardiac death. Primary prevention strategy after the discovery of an anomaly at risk is debated. Even if the absolute risk of sudden death is very low, a pre-participation screening in young athletes may be discussed due to a non-rare incidence...
October 16, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29050661/the-olin-eilobi-breathing-techniques-description-and-initial-case-series-of-novel-respiratory-retraining-strategies-for-athletes-with-exercise-induced-laryngeal-obstruction
#7
Kristina L Johnston, Hannah Bradford, Heather Hodges, Camille M Moore, Emily Nauman, J Tod Olin
INTRODUCTION: Exercise-induced laryngeal obstruction (EILO), the condition previously known as paradoxical vocal fold motion and vocal cord dysfunction, is characterized by inappropriate glottic or supraglottic obstruction during high-intensity exercise, causing exertional dyspnea, frequently with stridor. EILO is definitively diagnosed through upper-airway visualization during a characteristic episode. Although respiratory retraining is a primary therapy for EILO, many patients report symptom persistence despite adequate performance of traditional techniques...
October 11, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29050660/the-fortuitous-discovery-of-the-olin-eilobi-breathing-techniques-a-case-study
#8
Sarah Graham, Emily Deardorff, Kristina Johnston, J Tod Olin
Exercise-induced laryngeal obstruction (EILO) is the term for the condition previously named vocal cord dysfunction and paradoxical vocal fold motion. It is defined by glottic or supraglottic obstruction during periods of intense exercise. Not all patients respond to conventional therapy with speech-language pathology, behavioral health interventions, and treatment of contributing conditions. In this edition of Journal of Voice, the authors describe a novel series of respiratory retraining techniques, now called Olin EILOBI (EILO biphasic inspiratory) breathing techniques, specifically designed for athletes with EILO...
October 11, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29050040/maximal-fat-oxidation-is-related-to-performance-in-an-ironman-triathlon
#9
Jacob Frandsen, Stine Dahl Vest, Steen Larsen, Flemming Dela, Jørn W Helge
The aim of the present study was to investigate the relationship between maximal fat oxidation rate (MFO) measured during a progressive exercise test on a cycle ergometer and ultra-endurance performance. 61 male ironman athletes (age: 35±1 yrs. [23-47 yrs.], with a BMI of 23.6±0.3 kg/m(2) [20.0-30.1 kg/m(2)], a body fat percentage of 16.7±0.7% [8.4-30.7%] and a VO2peak of 58.7±0.7 ml/min/kg [43.9-72.5 ml/min/kg] SEM [Range]) were tested in the laboratory between 25 and 4 days prior to the ultra-endurance event, 2016 Ironman Copenhagen...
October 19, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29048967/new-and-recurrent-concussions-in-high-school-athletes-before-and-after-traumatic-brain-injury-laws-2005-2016
#10
Jingzhen Yang, R Dawn Comstock, Honggang Yi, Hosea H Harvey, Pengcheng Xun
OBJECTIVES: To examine the trends of new and recurrent sports-related concussions in high-school athletes before and after youth sports traumatic brain injury laws. METHODS: We used an interrupted time-series design and analyzed the concussion data (2005-2016) from High School Reporting Injury Online. We examined the trends of new or recurrent concussion rates among US representative high-school athletes participating in 9 sports across prelaw, immediate-postlaw, and postlaw periods by using general linear models...
October 19, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29048928/epidemiology-of-shoulder-and-elbow-injuries-among-united-states-high-school-baseball-players-school-years-2005-2006-through-2014-2015
#11
Michael G Saper, Lauren A Pierpoint, Wei Liu, R Dawn Comstock, John D Polousky, James R Andrews
BACKGROUND: Shoulder and elbow injuries are common in young athletes, especially high school baseball players. Understanding the risk factors associated with baseball injuries is an essential first step in the development of injury prevention strategies. PURPOSE: To provide a comprehensive understanding of the epidemiology of shoulder and elbow injuries among high school baseball players in the United States. STUDY DESIGN: Descriptive epidemiological study...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29047222/validation-of-the-german-version-of-the-ford-insomnia-response-to-stress-test
#12
Arne Dieck, Susanne Helbig, Christopher L Drake, Jutta Backhaus
The purpose of this study was to assess the psychometric properties of a German version of the Ford Insomnia Response to Stress Test with groups with and without sleep problems. Three studies were analysed. Data set 1 was based on an initial screening for a sleep training program (n = 393), data set 2 was based on a study to test the test-retest reliability of the Ford Insomnia Response to Stress Test (n = 284) and data set 3 was based on a study to examine the influence of competitive sport on sleep (n = 37)...
October 19, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/29045316/understanding-the-relationship-between-coach-and-athlete-perceptions-of-training-intensity-in-youth-sport
#13
Sean Scantlebury, Kevin Till, Tom Sawczuk, Jonathon Weakley, Ben Jones
To alleviate issues arising from the over/under prescription of training load, coaches must ensure that desired athlete responses to training are being achieved. The present study aimed to assess the level of agreement between the coach intended (pre-session) and observed (post-session) rating of perceived exertion (RPE), with athlete RPE during different training intensities (easy, moderate, hard). Coach intended RPE was taken prior to all field based training sessions over an 8 week in-season period. Following training, all coaches and athletes, whom were participants in hockey, netball, rugby and soccer were asked to provide an RPE measure for the completed session...
October 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29045074/detection-of-autologous-blood-transfusions-using-a-novel-dried-blood-spot-method
#14
Holly D Cox, Geoffrey D Miller, Auriella Lai, Dan Cushman, Daniel Eichner
In doping control laboratories, autologous blood transfusions are currently detected using an indirect method that monitors changes in an athlete's hemoglobin concentration [Hb] and reticulocyte percent (Ret%) over time. The method is limited by the need for a phlebotomist to collect venous blood and the limited blood stability which requires temperature-controlled shipment and analysis within 72 hours. These limitations significantly reduce the number of samples collected from each athlete and thus the utility of the method...
October 16, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29045058/loop-mediated-isothermal-amplification-lamp-as-an-alternative-to-pcr-a-rapid-on-site-detection-of-gene-doping
#15
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/29044638/impact-of-melatonin-supplementation-in-the-rat-spermatogenesis-subjected-to-forced-swimming-exercise
#16
A Moayeri, T Mokhtari, A Hedayatpour, H-A Abbaszadeh, S Mohammadpour, H Ramezanikhah, S Shokri
Oxygen consumption increases many times during exercise, which can increase reactive oxygen species. It negatively affects fertility in male athletes. Melatonin is exerting a regulatory role at different levels of the hypothalamic-pituitary-gonadal axis. However, there is no evidence that the protective effects of melatonin persist after long duration exercise on the spermatogenesis. Therefore, this study was conducted to examine the impacts of melatonin on the testis following the administration of swimming exercise...
October 18, 2017: Andrologia
https://www.readbyqxmd.com/read/29044223/modulating-hemispheric-lateralization-by-brain-stimulation-yields-gain-in-mental-and-physical-activity
#17
Catharina Zich, Siobhán Harty, Cornelia Kranczioch, Karen L Mansfield, Francesco Sella, Stefan Debener, Roi Cohen Kadosh
Imagery plays an important role in our life. Motor imagery is the mental simulation of a motor act without overt motor output. Previous studies have documented the effect of motor imagery practice. However, its translational potential for patients as well as for athletes, musicians and other groups, depends largely on the transfer from mental practice to overt physical performance. We used bilateral transcranial direct current stimulation (tDCS) over sensorimotor areas to modulate neural lateralization patterns induced by unilateral mental motor imagery and the performance of a physical motor task...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29043566/clinical-evaluation-and-physical-exam-findings-in-patients-with-anterior-shoulder-instability
#18
REVIEW
Vincent A Lizzio, Fabien Meta, Mohsin Fidai, Eric C Makhni
PURPOSE OF REVIEW: The goal of this paper is to provide an overview in evaluating the patient with suspected or known anteroinferior glenohumeral instability. RECENT FINDINGS: There is a high rate of recurrent subluxations or dislocations in young patients with history of anterior shoulder dislocation, and recurrent instability will increase likelihood of further damage to the glenohumeral joint. Proper identification and treatment of anterior shoulder instability can dramatically reduce the rate of recurrent dislocation and prevent subsequent complications...
October 17, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29043512/comparisons-of-perceived-training-doses-in-champion-collegiate-level-male-and-female-cross-country-runners-and-coaches-over-the-course-of-a-competitive-season
#19
Kyle R Barnes
BACKGROUND: Session rating of perceived exertion (sRPE) is a practical tool for coaches to assess internal training load of their athletes. In a sport like cross-country running, that is individual in nature, but has a team training and competition component, information about the association between external and internal load is lacking. Furthermore, there is a need for studies that examine perception of training doses across multiple training cycles including the competitive season as well as between male and female athletes...
October 17, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/29043500/optimal-pacing-and-carbohydrate-intake-strategies-for-ultramarathons
#20
Kristopher A Pruitt, Justin M Hill
PURPOSE: The purpose of this research is to determine the pacing and nutrition strategies which minimize completion time and carbohydrate intake for athletes competing in ultramarathon races. METHODS: We present the formulation of a two-phase optimization model. The first-phase mixed-integer nonlinear program (MINLP) determines the minimum completion time subject to the altitude, terrain, and distance of the race, as well as the mass and cardiovascular fitness of the athlete...
October 17, 2017: European Journal of Applied Physiology
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