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https://www.readbyqxmd.com/read/28735552/a-prospective-study-on-the-effect-of-sport-specialization-on-lower-extremity-injury-rates-in-high-school-athletes
#1
Timothy A McGuine, Eric G Post, Scott J Hetzel, M Alison Brooks, Stephanie Trigsted, David R Bell
BACKGROUND: Sport specialization is associated with an increased risk of musculoskeletal lower extremity injuries (LEIs) in adolescent athletes presenting in clinical settings. However, sport specialization and the incidence of LEIs have not been investigated prospectively in a large population of adolescent athletes. PURPOSE: To determine if sport specialization was associated with an increased risk of LEIs in high school athletes. STUDY DESIGN: Cohort study; Level of evidence, 2...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28735282/a-systematic-review-of-criteria-used-to-define-recovery-from-sport-related-concussion-in-youth-athletes
#2
REVIEW
Mohammad Nadir Haider, John J Leddy, Sonja Pavlesen, Melissa Kluczynski, John G Baker, Jeffrey C Miecznikowski, Barry S Willer
OBJECTIVE: The Concussion in Sport Group guidelines recommend a multifaceted approach to help clinicians make return to sport decisions. The purpose of this study was to identify the most common multifaceted measures used to define clinical recovery from sport-related concussion in young athletes (high school and/or college level) and to summarise existing knowledge of criteria used to make return to sport decisions. DESIGN: Systematic review. DATA SOURCES: The PubMed (MEDLINE), SPORTDiscus and Embase electronic databases were searched from 1 January 2000 to 1 March 2017 by three independent reviewers...
July 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28735104/effect-of-limb-dominance-and-sex-on-neuromuscular-activation-patterns-in-athletes-under-12-performing-unanticipated-side-cuts
#3
Michael J Del Bel, Alana K Fairfax, Michelle L Jones, Kendal Steele, Scott C Landry
Non-contact ACL injuries are one of the most common injuries to the knee joint among adolescent/collegiate athletes, with sex and limb dominance being identified as risk factors. In children under 12years of age (U12), these injuries occur less often and there is no sex-bias present. This study set out to explore if sex and/or limb dominance differences exist in neuromuscular activations in U12 athletes. Thirty-four U12 males and females had six bilateral muscles analyzed during unanticipated side-cuts. Principal component analysis was performed, capturing differences in overall magnitudes and timing of peak magnitudes...
July 14, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28732177/inguinal-hernia-in-athletes-role-of-dynamic-ultrasound
#4
William Kelton Vasileff, Mikhail Nekhline, Patricia A Kolowich, Gary B Talpos, Willam R Eyler, Marnix van Holsbeeck
BACKGROUND: Inguinal hernia is a commonly encountered cause of pain in athletes. Because of the anatomic complexity, lack of standard imaging, and the dynamic condition, there is no unified opinion explaining its underlying pathology. HYPOTHESIS: Athletes with persistent groin pain would have a high prevalence of inguinal hernia with dynamic ultrasound, and herniorrhaphy would successfully return athletes to activity. STUDY DESIGN: Case-control study...
July 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28731980/running-performance-nationality-sex-and-age-in-the-10-km-half-marathon-marathon-and-the-100-km-ultramarathon-iaaf-1999-2015
#5
Pantelis T Nikolaidis, Vincent O Onywera, Beat Knechtle
Nikolaidis PT, Onywera VO, and Knechtle B. Running performance, nationality, sex, and age in the 10-km, half-marathon, marathon, and the 100-km ultramarathon IAAF 1999-2015. J Strength Cond Res 31(8): 2189-2207, 2017-The aim of this study was to examine the performance of the world's best runners in the 10-km, half-marathon, marathon, and 100-km races by age, sex, and nationality during 1999-2015, using data from the International Association of Athletics Federations (IAAF). A total of 38,895 runners (17,136 women and 21,759 men) were evaluated, with 2,594 (1,360 women and 1,234 men) in the 10-km; 11,595 (5,225 women and 6,370 men) in the half-marathon; 23,973 (10,208 women and 13,765 men) in the marathon; and 733 (343 women and 390 men) in 100-km events...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28731886/collegiate-student-athletes-with-history-of-adhd-or-academic-difficulties-are-more-likely-to-produce-an-invalid-protocol-on-baseline-impact-testing
#6
Lisa Manderino, John Gunstad
OBJECTIVE: Attention deficit hyperactivity disorder (ADHD) and other academically-relevant diagnoses have been suggested as modifiers of neurocognitive testing in sport-related concussion, such as Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT). These preexisting conditions may suppress ImPACT scores to the extent that they are indistinguishable from low scores because of poor effort. The present study hypothesized that student athletes with history of ADHD or academic difficulties produce lower ImPACT composite scores and are more likely to produce invalid protocols than those without such conditions...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28730870/cardiac-autonomic-recovery-after-strength-exercise-in-lower-and-upper-limbs
#7
Naerton José Xavier Isidoro, Milana Drumond Ramos Santana, Vitor E Valenti, David M Garner, Luiz Carlos de Abreu
Introduction Strength exercises influence the cardiovascular system by promoting autonomic adjustments induced by the increased metabolic demand and consequent increase in local blood flow. However, it is unclear whether there are differences between upper and lower limbs. We aimedto evaluate recovery of cardiac autonomic modulation afterstrengthexercise in upper and lower limbs. Methods We analysed 29 healthy male subjects physically active but not professional athletes aged between 20 and 35 years old...
July 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28730749/impact-of-the-dynamic-and-static-component-of-the-sport-practiced-for-electrocardiogram-analysis-in-screening-athletes
#8
Nicolas Maillot, Charles Guenancia, Nobila V Yameogo, Aurélie Gudjoncik, Fabien Garnier, Luc Lorgis, Frédéric Chagué, Yves Cottin
BACKGROUND: To interpret the electrocardiogram (ECG) of athletes, the recommendations of the ESC and the Seattle criteria define type-1 peculiarities, those induced by training, and type-2, those not induced by training, to rule out cardiomyopathy. The specificity of the screening was improved by Sheikh who definied "Refined Criteria", which includes a group of intermediate peculiarities. The aim of our study was to investigate the influence of static and dynamic components on the prevalence of different types of abnormalities...
July 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28729707/status-stress-and-performance-in-track-and-field-athletes-during-the-european-games-in-baku-azerbaijan
#9
Benjamin Siart, Alfred Nimmerichter, Claudia Vidotto, Bernard Wallner
This study analyzes the relationship between salivary cortisol and testosterone levels and performance in track and field athletes. In addition, we analyzed the influence of status among athletes (measured based on previous athletic achievement) on hormone levels. Nineteen members of the Austrian track and field team (eleven males, eight females, 25.9 ± 3.9 years of age, 74.9 ± 20.1 kg, and 179.3 ± 10 cm) participated in this study. Data was collected during the European Games in Baku. Athletes delivered saliva samples at various time-points including morning samples and samples directly before and after the competition...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727937/preoperative-short-form-health-survey-score-is-predictive-of-return-to-play-and-minimal-clinically-important-difference-at-a-minimum-2-year-follow-up-after-anterior-cruciate-ligament-reconstruction
#10
Benedict U Nwachukwu, Brenda Chang, Pramod B Voleti, Patricia Berkanish, Matthew R Cohn, David W Altchek, Answorth A Allen, Riley J Williams
BACKGROUND: There is increased interest in understanding the preoperative determinants of postoperative outcomes. Return to play (RTP) and the patient-reported minimal clinically important difference (MCID) are useful measures of postoperative outcomes after anterior cruciate ligament reconstruction (ACLR). PURPOSE: To define the MCID after ACLR and to investigate the role of preoperative outcome scores for predicting the MCID and RTP after ACLR. STUDY DESIGN: Case-control study; Level of evidence, 3...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28726737/respiratory-tract-infections-and-the-role-of-biologically-active-polysaccharides-in-their-management-and-prevention
#11
REVIEW
Milos Jesenak, Ingrid Urbancikova, Peter Banovcin
Respiratory tract infections (RTIs) are the most common form of infections in every age category. Recurrent respiratory tract infections (RRTIs), a specific form of RTIs, represent a typical and common problem associated with early childhood, causing high indirect and direct costs on the healthcare system. They are usually the consequence of immature immunity in children and high exposure to various respiratory pathogens. Their rational management should aim at excluding other severe chronic diseases associated with increased morbidity (e...
July 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28724040/cardiac-remodeling-indicators-in-adolescent-athletes
#12
Joaquim Castanheira, João Valente-Dos-Santos, Daniela Costa, Diogo Martinho, Jorge Fernandes, João Duarte, Nuno Sousa, Vasco Vaz, Luis Rama, António Figueiredo, Manuel Coelho-E-Silva
Objective: The idea that different sports and physical training type results in different cardiac adaptations has been widely accepted. However, this remodelling process among different sport modalities is still not fully understood. Thus, the current study aims to investigate the heart morphology variation associated with a set of different modalities characterized by distinct models of preparation and different methods and demands of training and completion. Method: The sample comprises 42 basketball players, 73 roller hockey players, 28 judo athletes and 21 swimmers...
May 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28722468/evaluating-the-recovery-curve-for-clinically-assessed-reaction-time-after-concussion
#13
Gianluca Del Rossi
CONTEXT:   A change in reaction time is one of various clinical measures of neurocognitive function that can be monitored after concussion and has been reported to be among the most sensitive indicators of cognitive impairment. OBJECTIVE:   To determine the timeline for clinically assessed simple reaction time to return to baseline after a concussion in high school athletes. DESIGN:   Observational study. SETTING:   Athletic training room...
July 19, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28722467/the-influence-of-lower-extremity-lean-mass-on-landing-biomechanics-during-prolonged-exercise
#14
Melissa M Montgomery, Amanda J Tritsch, John R Cone, Randy J Schmitz, Robert Henson, Sandra J Shultz
CONTEXT:   The extent to which lower extremity lean mass (LELM) relative to total body mass influences one's ability to maintain safe landing biomechanics during prolonged exercise when injury incidence increases is unknown. OBJECTIVES:   To examine the influence of LELM on (1) pre-exercise lower extremity biomechanics and (2) changes in biomechanics during an intermittent exercise protocol (IEP) and (3) determine whether these relationships differ by sex. We hypothesized that less LELM would predict higher-risk baseline biomechanics and greater changes toward higher-risk biomechanics during the IEP...
July 19, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28719752/return-to-sport-after-shoulder-arthroplasty-in-recreational-athletes-a-systematic-review-and-meta-analysis
#15
Florence Aim, Jean-David Werthel, Julien Deranlot, Marie Vigan, Geoffroy Nourissat
BACKGROUND: One of the most frequent demands from patients after shoulder replacement surgery is to return to sport. PURPOSE: To determine the rate of return to sport after shoulder arthroplasty (total shoulder arthroplasty, reverse shoulder arthroplasty, hemiarthroplasty) in recreational athletes. STUDY DESIGN: Meta-analysis and systematic review. METHODS: The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were followed to perform this systematic review and meta-analysis of the results in the literature as well as the presentation of results...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28719028/sales-performance-and-athletic-outcome-in-young-thoroughbreds-with-pericarditis
#16
K A Sprayberry, N Slovis
BACKGROUND: Pericarditis is a sporadic but important cause of critical illness in horses of all ages. There is limited information on whether Thoroughbred horses that survive pericarditis are able to reach athletic potential. OBJECTIVES: To determine how pericarditis affected horses that had the disease as young animals with regard to selling price in public sales and the ability to race successfully. STUDY DESIGN: Retrospective case series...
July 18, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28717612/intratendinous-tears-of-the-achilles-tendon-a-new-pathology-analysis-of-a-large-4-year-cohort
#17
Otto Chan, Sarah Morton, Mel Pritchard, Tina Parkes, Peter Malliaras, Tom Crisp, Nat Padhiar, Nicola Maffulli, John King, Dylan Morrissey
BACKGROUND: Achillodynia is common and includes Achilles tendinopathy, partial Achilles tears and Achilles tendon ruptures. However, we believe an additional pathology should be considered for Achillodynia differentials - the intratendinous tear (ITT). METHODS: Examinations of 740 achillodynic patients in one specialist centre were reviewed. ITTs were defined as a clearly visualised echopoor area situated centrally and extending to, but not through the tendon periphery, with pain on palpation and no clinical findings consistent with Achilles rupture...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28715283/temperate-water-immersion-as-a-treatment-for-hyperthermic-humans-wearing-american-football-uniforms
#18
Kevin C Miller, Tyler Truxton, Blaine Long
CONTEXT:   Cold-water immersion (CWI; 10°C) can effectively reduce body core temperature even if a hyperthermic human is wearing a full American football uniform (PADS) during treatment. Temperate-water immersion (TWI; 21°C) may be an effective alternative to CWI if resources for the latter (eg, ice) are unavailable. OBJECTIVE:   To measure rectal temperature (Trec) cooling rates, thermal sensation, and Environmental Symptoms Questionnaire (ESQ) scores of participants wearing PADS or shorts, undergarments, and socks (NOpads) before, during, and after TWI...
July 17, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28714783/performance-outcomes-after-hook-of-hamate-fractures-in-major-league-baseball-players
#19
Michael S Guss, John P Begly, Austin J Ramme, David P Taormina, Michael E Rettig, John T Capo
CONTEXT: Major League Baseball (MLB) players are at risk of hook of hamate fractures. There is a paucity of data assessing the effect of a hook of hamate fracture on MLB players' future athletic performance. OBJECTIVE: To determine if MLB players who sustain hook of hamate fractures demonstrate decreased performance upon return to competition when compared with their performance before injury and that of their control-matched peers. DESIGN: Retrospective Case-Control Design...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28714744/marathon-pace-control-in-masters-athletes
#20
Derek Breen, Michelle Norris, Robin Healy, Ross Anderson
PURPOSE: Pacing strategies are key to overall performance outcome in distance running events. Presently, no literature has examined pacing strategies utilised by masters athletes, of all running levels, during a competitive marathon. Therefore, this study aimed to examine masters athletes' pacing strategies, categorised by gender, age and performance level. METHODS: Data were retrieved from the 2015 TSC New York City Marathon for 31,762 masters athletes (20,019 men and 11,743 women)...
July 17, 2017: International Journal of Sports Physiology and Performance
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