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https://www.readbyqxmd.com/read/29332730/biomechanical-factors-associated-with-running-economy-and-performance-of-elite-kenyan-distance-runners-a-systematic-review
#1
REVIEW
Nassib Tawa, Quinette Louw
BACKGROUND: Running economy (RE) is a determinant of performance in endurance sports and is a complex multi-factorial measure which reflects the combined functioning of bio-mechanical, neuro-muscular, metabolic and cardio-respiratory factors some of which are hereditary or adapt to coaching. Kenyan distance runners have dominated major global events with their unmatched performance for decades and this phenomenon has prompted several investigations aimed at establishing possible factors associated with their performance...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332181/management-of-rotator-cuff-injuries-in-the-elite-athlete
#2
REVIEW
Leigh J Weiss, Dean Wang, Michael Hendel, Philip Buzzerio, Scott A Rodeo
PURPOSE OF REVIEW: Rotator cuff injuries are a common cause of pain and dysfunction for the elite athlete and can result in time loss from participation. This review highlights the current management of these injuries. RECENT FINDINGS: Conservative management of rotator cuff injuries continues to be the "gold standard" in the elite athlete. This includes a comprehensive rehabilitation program, anti-inflammatories, and corticosteroid injections. Newer treatment techniques such as intramuscular dry needling and the use of biologics such as platelet-rich plasma and stem cells demonstrate early promising results; however, these modalities require further investigation to determine their effectiveness...
January 13, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29329471/diagnosing-meniscal-pathology-and-understanding-how-to-evaluate-a-postoperative-meniscus-based-on-the-operative-procedure
#3
Monica Tafur, Linda Probyn, Jaskarndip Chahal, Lawrence M White
Magnetic resonance imaging (MRI) represents the preferred noninvasive imaging technique to diagnose meniscal pathology in the pre- and postoperative setting. Furthermore, characterization of meniscal tissue MR properties has been possible by the development of advanced MRI techniques. Suspected meniscal tears are a frequent indication for MRI and the International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine (ISAKOS) classification system has been developed to facilitate accurate and uniform reporting of such meniscal tears...
January 12, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29327824/are-there-bilateral-isokinetic-shoulder-rotator-differences-in-basketball-male-players
#4
Thierry Weissland, Maryne Cozette, Clare Doyle, Antoine Gabrion
BACKGROUND: The internal (IR) and external (ER) rotator shoulder strength are often assess in the upper limb sports to prevent a risk of injuries. The purpose of this comparative study was to measure the agonist/antagonist balance of shoulder strength and to determine whether significant differences exist between the dominant and nondominant sides in basketball players compared to a control groups. METHODS: During the championship, 23 elite male-basketball players (BB) and 23 healthy males (CG) were tested bilaterally on a Cybex Norm isokinetic dynamometer in a seated position with 45° shoulder abduction in the scapular plane at 60°...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29327216/dental-erosion-prevalence-and-risk-factors-among-a-group-of-adolescents-in-stockholm-county
#5
M Skalsky Jarkander, M Grindefjord, K Carlstedt
AIMS: To investigate the prevalence and risk factors of dental erosion (DE) among a group of adolescents in Stockholm County. MATERIALS AND METHODS: This cross sectional cohort study was conducted at three clinics of the Public Dental Service in Stockholm County. Fifteen and 17 year old adolescents (1335) who scheduled their regular dental health examination were asked to participate. After drop-outs a sample of 1071 individuals, 547 males and 524 females were enrolled in the study...
January 11, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29326958/performance-and-return-to-sport-after-thumb-ulnar-collateral-ligament-repair-in-major-league-baseball-players
#6
Robert A Jack, Kyle R Sochacki, Bryce Gagliano, David M Lintner, Joshua D Harris, Patrick C McCulloch
Background: Acute ruptures of the ulnar collateral ligament (UCL) of the thumb are common injuries in sports. Surgical repair has yielded excellent results and high return-to-sport (RTS) rates in elite athletes. Purpose: To determine (1) the RTS rate in Major League Baseball (MLB) players following thumb UCL repair, (2) postoperative career length and games played per season, (3) pre- and postoperative performance, (4) postoperative performance compared with matched control players, and (5) whether dominant and nondominant hand injuries respond differently...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29325894/reference-values-for-the-creatine-kinase-response-to-professional-australian-football-match-play
#7
Luke A G Inman, Michael J Rennie, Mark L Watsford, Nathan J Gibbs, James Green, Robert W Spurrs
OBJECTIVES: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. DESIGN: Case series. METHODS: CK was collected between 36-48h following professional Australian football match-play...
December 30, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29324877/impact-of-extra-articular-pathologies-on-groin-pain-an-arthroscopic-evaluation
#8
Mitsunori Kaya
PURPOSE: For patients who have anterior hip pain evaluated by Patrick's test and tenderness at Scarpa's triangle, we perform periarticular debridement based on the hypothesis that extra-articular pathologies are responsible for the hip pain. The purpose of this study was to categorize the endoscopic extra-articular findings and to evaluate the clinical significance of periarticular pathologies in anterior hip pain. METHODS: Arthroscopic findings of 77 patients who underwent periarthritic debridement were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29324530/early-results-of-single-plug-autologous-osteochondral-grafting-for-osteochondritis-dissecans-of-the-capitellum-in-adolescents
#9
Donald S Bae, Eitan M Ingall, Patricia E Miller, Katherine Eisenberg
BACKGROUND: Osteochondral autologous transplantation surgery (OATS) has been advocated for unstable osetochondritis dissecans (OCD) lesions of the adolescent capitellum, though limited information is available regarding clinical and radiographic results in North American patients. We hypothesize that single-plug OATS is safe and effective in alleviating pain and restoring function in unstable OCD. METHODS: Twenty-eight patients with unstable OCD treated with single-plug OATS were evaluated...
January 10, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29324408/assessing-dynamic-balance-performance-during-exergaming-based-on-speed-and-curvature-of-body-movements
#10
Venustiano Soancatl Aguilar, Jasper J van de Gronde, Claudine J C Lamoth, Natasha M Maurits, Jos B T M Roerdink
Improving balance performance among the elderly is of utmost importance because of the increasing number of injuries and fatalities caused by fall incidences. Digital games controlled by body movements (exergames) have been proposed as a way to improve balance among older people. However, the assessment of balance performance in real-time during exergaming remains a challenging task. This assessment could be used to provide instantaneous feedback and automatically adjust the exergame difficulty. Such features could potentially increase the motivation of the player, thus augmenting the effectiveness of exergames...
January 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29322208/the-association-of-the-medial-joint-vacuum-phenomenon-with-ulnar-collateral-ligament-injury-in-symptomatic-elbows-of-younger-athletes
#11
Ryan Tai, Tyson Bolinske, Varand Ghazikhanian, Jacob C Mandell
OBJECTIVE: To determine the prevalence of intra-articular gas (IAG) on elbow radiography and evaluate variables, including IAG, as predictors of UCL injury. MATERIALS AND METHODS: This IRB-approved retrospective study consisted of 241 consecutive elbow radiographic studies containing AP radiographs with valgus stress of both symptomatic and asymptomatic sides in 234 patients. The IAG, medial joint space (MJS), and MJS difference between the symptomatic and asymptomatic elbow (MJSD) were evaluated by two readers, as well as patient age, gender, sport played, and handedness...
January 10, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29321845/failure-to-define-low-back-pain-as-a-disease-or-an-episode-renders-research-on-causality-unsuitable-results-of-a-systematic-review
#12
REVIEW
Emad M Ardakani, Charlotte Leboeuf-Yde, Bruce F Walker
Background: Causative factors may be different for the very first onset of symptoms of the 'disease' of low back pain (LBP) than for ensuing episodes that occur after a pain-free period. This differentiation hinges on a life-time absence of low back pain at first onset and short-term absence for further episodes. In this systematic review, we explored whether researchers make these distinctions when investigating the causality of LBP. Methods: A literature search of PUBMED, CINAHL, and SCOPUS databases was performed from January 2010 until September 2016 using the search terms 'low back pain' or 'back pain' and 'risk factor' or 'caus*' or 'predict*' or 'onset' or 'first-time' or 'inception' or 'incidence'...
2018: Chiropractic & Manual Therapies
https://www.readbyqxmd.com/read/29320946/cognitive-demands-influence-lower-extremity-mechanics-during-a-drop-vertical-jump-task-in-female-athletes
#13
Thomas Gus Almonroeder, Thomas Kernozek, Stephen Cobb, Brooke Slavens, Jinsung Wang, Wendy Huddleston
Study Design Cross-sectional study. Background The drop vertical jump task is commonly used in anterior cruciate ligament injury risk screening; however, the predictive validity is limited. Part of the limited predictive validity may be because the drop vertical jump task does not impose cognitive demands that reflect sports participation. Objectives To investigate the influence of additional cognitive demands on lower extremity mechanics during execution of the drop vertical jump task. Methods Twenty uninjured females (ages 18-25 years old) were required to perform the standard drop vertical jump task, as well as drop vertical jumps which included additional cognitive demands...
January 10, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29320640/syme-amputation-a-systematic-review
#14
Rudwina Braaksma, Pieter U Dijkstra, Jan H B Geertzen
BACKGROUND: In the decision-making process toward an amputation of the lower extremity, knowledge about patient-related outcomes after amputation and rehabilitation is important. We have not found a systematic review that provides this knowledge for Syme amputation. The aim of this study was to present an overview of outcomes after a Syme amputation grouped according to the International Classification of Functioning, Disability and Health (ICF) model, focusing on body structures and functions, activities, and participation...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29320519/the-effect-of-small-sided-games-with-different-levels-of-opposition-on-the-tactical-behaviour-of-young-footballers-with-different-levels-of-sport-expertise
#15
Alba Práxedes, Alberto Moreno, Alexander Gil-Arias, Fernando Claver, Fernando Del Villar
To optimize players' tactical abilities, coaches need to design training sessions with representative learning tasks, such as, small-sided games. Moreover, it is necessary to adapt the complexity of the tasks to the skill level of the athletes to maximally improve their perceptual, visual and attentive abilities. The objective of this study was to analyze the effect of two teaching programs, each utilizing modified games with varied levels of opposition, on decision-making and action execution in young players with different levels of sports expertise...
2018: PloS One
https://www.readbyqxmd.com/read/29319101/structural-elucidation-of-major-selective-androgen-receptor-modulator-sarm-metabolites-for-doping-control
#16
Neeraj Garg, Annelie Hansson, Heather K Knych, Scott D Stanley, Mario Thevis, Ulf Bondesson, Mikael Hedeland, Daniel Globisch
Selective androgen receptor modulators (SARMs) are a class of androgen receptor drugs, which have a high potential to be performance enhancers in human and animal sports. Arylpropionamides are one of the major SARM classes and get rapidly metabolized significantly complicating simple detection of misconduct in blood or urine sample analysis. Specific drug-derived metabolites are required as references due to a short half-life of the parent compound but are generally lacking. The difficulty in metabolism studies is the determination of the correct regio and stereoselectivity during metabolic conversion processes...
January 10, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29318172/clinical-factors-that-predict-a-second-acl-injury-after-acl-reconstruction-and-return-to-sport-preliminary-development-of-a-clinical-decision-algorithm
#17
Mark V Paterno, Bin Huang, Staci Thomas, Timothy E Hewett, Laura C Schmitt
Background: Biomechanical predictors of a second anterior cruciate ligament (ACL) injury after ACL reconstruction (ACLR) and return to sport (RTS) have been identified; however, these measures may not be feasible in a standard clinical environment. Purpose/Hypothesis: The purpose of this study was to evaluate whether standard clinical measures predicted the risk of second ACL injuries. The hypothesis tested was that a combination of strength, function, and patient-reported measures at the time of RTS would predict the risk of second ACL injuries with high sensitivity and specificity...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29318168/the-utility-of-objective-strength-and-functional-performance-to-predict-subjective-outcomes-after-anterior-cruciate-ligament-reconstruction
#18
Heather Menzer, Lindsay V Slater, David Diduch, Mark Miller, Grant Norte, John Goetschius, Joseph M Hart
Background: Many clinicians release patients to return to activity after anterior cruciate ligament reconstruction (ACLR) based on time from surgery despite deficits in muscle strength and function. It is unclear whether symmetry or unilateral performance is the best predictor of subjective outcomes after ACLR. Purpose: To determine physical performance predictors of patient-reported outcomes after reconstruction. Study Design: Cross-sectional study; Level of evidence, 3...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29318166/lower-limb-symmetry-comparison-of-muscular-power-between-dominant-and-nondominant-legs-in-healthy-young-adults-associated-with-single-leg-dominant-sports
#19
Alex Vaisman, Rodrigo Guiloff, Juan Rojas, Iris Delgado, David Figueroa, Rafael Calvo
Background: Achieving a symmetrical power performance (difference <15%) between lower limbs is generally recommended during sports rehabilitation. However, athletes in single-leg-dominant sports, such as professional soccer players, could develop significant asymmetry between their dominant and nondominant legs, such that symmetry does not act as a viable comparison. Purpose: To (1) compare maximal muscular power between the dominant and nondominant legs in healthy young adults, (2) evaluate the effect of a single-leg-dominant sport activity performed at the professional level, and (3) propose a parameter of normality for maximal power difference in the lower limbs of this young adult population...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29315892/effects-of-fasted-vs-fed-state-exercise-on-performance-and-post-exercise-metabolism-a-systematic-review-meta-analysis
#20
REVIEW
Tom P Aird, Robert W Davies, Brian P Carson
The effects of nutrition on exercise metabolism and performance remains an important topic among sports scientists, clinical, and athletic populations. Recently, fasted exercise has garnered interest as a beneficial stimulus which induces superior metabolic adaptations to fed exercise in key peripheral tissues. Conversely, pre-exercise feeding augments exercise performance compared with fasting conditions. Given these seemingly divergent effects on performance and metabolism, an appraisal of the literature is warranted...
January 6, 2018: Scandinavian Journal of Medicine & Science in Sports
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