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https://www.readbyqxmd.com/read/28530528/objectifying-tactics-athlete-and-race-variability-in-elite-short-track-speed-skating
#1
Marco J Konings, Florentina J Hettinga
PURPOSE: To objectively capture and understand tactical considerations in a race, we explored whether race-to-race variation of an athlete and the variation of competitors within a race could provide insight into how and when athletes modify their pacing decisions in response to other competitors. METHODS: Lap times of elite 500, 1000 and 1500 m short-track speed skating competitions between 2011-2016 (n=6965 races) were collected. Log-transformed lap and finishing times were analyzed with mixed linear models...
May 22, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28527589/competition-related-testosterone-cortisol-and-perceived-personal-success-in-recreational-women-athletes
#2
Kathleen V Casto, Aileen Rivell, David A Edwards
Thirty-five women participating in one or more intramural flag-football games provided saliva samples before, immediately after, and 10min after competition and completed an after-competition questionnaire appraising their own performance during the game. As seen in other studies of elite athletes, these recreational athletes, on average, showed significant elevations in testosterone (T) and cortisol (C) across the competition period - the "competition effect". In winners and losers, T levels at all time points measured were positively related to athletes' appraisals of their own individual performance...
May 17, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28513280/application-of-acoustic-radiation-force-impulse-arfi-elastography-in-imaging-of-delayed-onset-muscle-soreness-doms-a-comparative-analysis-with-3t-mri
#3
Thilo Hotfiel, Marion Kellermann, Bernd Swoboda, Dane Wildner, Tobias Golditz, Casper Grim, Martin Raithel, Michael Uder, Rafael Heiss
CONTEXT: DOMS is one of the most common reasons for impaired muscle performance in sports and is associated with reduced muscle strength and frequently observed both in professional and recreational athletes. OBJECTIVE: To emphasize the diagnostic value of Acoustic Radiation Force Impulse (ARFI) in imaging of Delayed Onset Muscle Soreness by comparing findings to high-resolution 3T MRI T2 weighted sequences. DESIGN: Case series. SETTING: Laboratory environment...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28507521/prime-time-light-exposures-do-not-seem-to-improve-maximal-physical-performance-in-male-elite-athletes-but-enhance-end-spurt-performance
#4
Raphael Knaier, Juliane Schäfer, Anja Rossmeissl, Christopher Klenk, Henner Hanssen, Christoph Höchsmann, Christian Cajochen, Arno Schmidt-Trucksäss
Many sports competitions take place during television prime time, a time of the day when many athletes have already exceeded their time of peak performance. We assessed the effect of different light exposure modalities on physical performance and melatonin levels in athletes during prime time. Seventy-two young, male elite athletes with a median (interquartile range) age of 23 (21; 29) years and maximum oxygen uptake (VO2max) of 63 (58; 66) ml/kg/min were randomly assigned to three different light exposure groups: bright light (BRIGHT), blue monochromatic light (BLUE), and control light (CONTROL)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28504066/the-association-of-recreational-and-competitive-running-with-hip-and-knee-osteoarthritis-a-systematic-review-and-meta-analysis
#5
Eduard Alentorn-Geli, Kristian Samuelsson, Volker Musahl, Cynthia L Green, Mohit Bhandari, Jón Karlsson
Study Design Systematic review and meta-analysis. Background Running is a healthy and popular activity worldwide, but data regarding its association with osteoarthritis (OA) are conflicting. Objectives To evaluate the association of hip and knee OA with running and to explore the influence of running intensity on this association. Methods PubMed, EMBASE and Cochrane Library databases were used to identify studies investigating the occurrence of OA of the hip and/or knee among runners. Studies comparing this occurrence between runners and controls (sedentary, non-running individuals) were meta-analyzed...
May 13, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28499094/the-epidemiology-and-effect-of-sliding-injuries-in-major-and-minor-league-baseball-players
#6
Christopher L Camp, Frank C Curriero, Keshia M Pollack, Stephanie W Mayer, Andrea M Spiker, John D'Angelo, Struan H Coleman
BACKGROUND: Although sliding occurs frequently in professional baseball, little is known about the epidemiology and effect of injuries that occur during sliding in this population of elite athletes. PURPOSE: To describe the incidence and characteristics of sliding injuries, determine their effect in terms of time out of play, and identify common injury patterns that may represent appropriate targets for injury prevention programs in the future. STUDY DESIGN: Descriptive epidemiologic study...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28495249/heart-rate-variability-to-monitor-performance-in-elite-athletes-criticalities-and-avoidable-pitfalls
#7
Daniela Lucini, Ilaria Marchetti, Antonio Spataro, Mara Malacarne, Manuela Benzi, Stefano Tamorri, Roberto Sala, Massimo Pagani
BACKGROUND: Spectral analysis of Heart Rate Variability (HRV) is a simple, non-invasive technique that is widely used in sport to assess sympatho-vagal regulation of the heart. Its employment is increasing partly due to the rising usage of wearable devices. However data acquisition using these devices may be suboptimal because they cannot discriminate between sinus and non-sinus beats and do not record any data regarding respiratory frequency. This information is mandatory for a correct clinical interpretation...
May 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28493064/evidence-based-prerequisites-and-precursors-of-athletic-talent-a-review
#8
REVIEW
Vladimir B Issurin
Extensive findings related to nature and nurture in determining athletic talent (AT) have been reviewed. Available data demonstrate the important contribution of hereditary factors as well as the crucial importance of environmental prerequisites for identifying and developing AT. Recent publications provide examples of contemporary approaches intended to solve the problem of how to discover and nurture AT. A number of cross-sectional and longitudinal studies highlighted possibilities of revealing a predisposition to certain sports among youthful prospects, but were unable to predict attainment of world-class status...
May 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28488940/elite-african-marathoners-specialize-earlier-than-elite-non-african-marathoners
#9
Tyler J Noble, Robert F Chapman
PURPOSE: To assess differences in event specific specialization between elite African and Non-African male marathon runners on the basis of age, performance, and career length. METHODS: The top 90 African marathoners from 2001-2015 were compared to the top 90 Non-African marathoners from the same time period across various markers related to specialization age, performance, and career length. Independent t-tests were used to identify significant differences (P<0...
May 10, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28481383/amount-of-minutes-played-does-not-contribute-to-anterior-cruciate-ligament-injury-in-national-basketball-association-athletes
#10
Kelechi R Okoroha, Kojo Marfo, Fabien Meta, Robert Matar, Ramsy Shehab, Terry Thompson, Vasilios Moutzouros, Eric C Makhni
There is limited information on the potential risk factors for sustaining an anterior cruciate ligament (ACL) tear in National Basketball Association (NBA) athletes. This study evaluated 83 NBA players who sustained an ACL injury between 1984 and 2015 to determine the influence of minutes played on injury risk. Minutes played in the injury game, during the season, and over their career were assessed, along with the ability to return to play, player efficiency rating, and playing time after return. Athletes in the NBA played significantly fewer minutes before sustaining an ACL injury (17...
May 8, 2017: Orthopedics
https://www.readbyqxmd.com/read/28476362/editorial-commentary-core-muscle-injuries-or-athletic-pubalgia-finally-the-real-sausage-not-just-the-same-ole-baloney
#11
EDITORIAL
William C Meyers
In their paper "Prevalence of Surgical Repair for Athletic Pubalgia and Impact on Performance in Football Athletes Participating in the National Football League Combine," Knapik et al. cut through the baloney in the literature on "sports hernia" and apply new eyes to the impact of the results of core muscle surgery on young elite athletes trying out for the National Football League (NFL). They found that the players who had surgery did just as well as all the others in and following NFL Combines. Even the players with presumptively residual, MRI findings did well...
May 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28475550/duration-specific-running-performance-in-elite-gaelic-football
#12
Shane Malone, Barry Solan, Brian Hughes, Kieran Collins
The aim of the current investigation was to determine the position and duration specific running performance of elite Gaelic football players through the use of a moving average method. Global positioning system data (4-Hz, VX Sport, New-Zealand) were collected from thirty-five (n = 35) elite Gaelic football players across a two season period. A total of 32 competitive matches were analysed with 300 full match play data samples obtained for final analysis. Players were categorised based on positional groups; full-back, half-back, midfield, half- forward and full-forward...
April 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28475409/commitment-to-physical-activity-and-health-a-case-study-of-a-paralympic-gold-medallist
#13
Bridie Kean, Florin Oprescu, Marion Gray, Brendan Burkett
BACKGROUND: Physical activity has been documented as both beneficial and detrimental for individuals with multiple sclerosis (MS). The varied experience highlights challenges associated with physical activity and MS, requiring a greater understanding of the experiences of exercise for individuals with MS. OBJECTIVE: The purpose of this study was to explore how physical activity played a role in the life of a Paralympic Gold medallist. Carol was diagnosed with MS and went onto achieve the highest accolade in Paralympic sport...
May 5, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28474867/the-response-of-coagulation-and-anti-coagulant-factors-of-elite-athletes-following-acute-resistance-and-high-intensity-interval-exercises
#14
Sedigheh Karampour, Abbas A Gaeini
BACKGROUND: Blood coagulation and fibrinolysis include two vital physiological systems, which are regulated by a balance between activators and inhibitors. The aim of this study is to survey the response of coagulation and anticoagulant factors following acute resistance and high intensity interval exercises. METHODS: This is an experimental study. The statistical sample was an elite group of karate males (aged 22.10±2.76 years, height 175.80±5.43 cm, mass 74...
April 26, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28468255/using-tri-axial-accelerometry-in-daily-elite-swim-training-practice
#15
Sander Ganzevles, Rik Vullings, Peter Jan Beek, Hein Daanen, Martin Truijens
Background: Coaches in elite swimming carefully design the training programs of their swimmers and are keen on achieving strict adherence to those programs by their athletes. At present, coaches usually monitor the compliance of their swimmers to the training program with a stopwatch. However, this measurement clearly limits the monitoring possibilities and is subject to human error. Therefore, the present study was designed to examine the reliability and practical usefulness of tri-axial accelerometers for monitoring lap time, stroke count and stroke rate in swimming...
April 29, 2017: Sensors
https://www.readbyqxmd.com/read/28459358/oral-contraceptive-use-for-manipulation-of-menstruation-in-young-physically-active-women
#16
Mia A Schaumberg, Lynne M Emmerton, David G Jenkins, Nicola W Burton, Xanne Ak Janse de Jonge, Tina L Skinner
PURPOSE: Menstruation and menstrual symptoms are commonly-cited barriers to physical activity in women. The delay or avoidance of menstruation through extended oral contraceptive regimens may mitigate these barriers, yet information on menstrual manipulation practices in young physically-active women is sparse. The objective of this study was to investigate prevalence of, and reasons for, menstrual manipulation with oral contraceptives in recreationally- and competitively- active women...
May 1, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28459347/characteristics-and-challenges-of-open-water-swimming-performance-a-review
#17
Roberto Baldassarre, Marco Bonifazi, Paola Zamparo, Maria Francesca Piacentini
PURPOSE: Although the popularity of open water swimming (OWS) events has significantly increased in the last decades, specific studies regarding performance of elite or age group athletes in these events are scarce. The purpose of this review is to analyse the existing literature on OWS. METHODS: Relevant literature was located via computer-generated citations: during August 2016, online computer searches on PubMed and Scopus databases were conducted to locate published research...
May 1, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28457670/implications-of-altered-autonomic-control-on-sports-performance-in-athletes-with-spinal-cord-injury
#18
REVIEW
Sebastian Cruz, Cheri A Blauwet
It is well known that athletes with spinal cord injury (SCI) may experience altered autonomic physiology that impacts their exercise capacity and sports performance. This is particularly relevant given the ever-increasing number of individuals with SCI who are actively engaged in sports at all levels, from community-based adaptive sports to elite Paralympic competitions. As such, the purpose of this article is to review the present literature regarding the implications of altered autonomic control on the safety and performance of athletes with SCI...
April 4, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28452146/autonomic-testing-for-prediction-of-competition-performance-in-paralympic-athletes
#19
Jordan W Squair, Aaron A Phillips, Katharine D Currie, Cameron Gee, Andrei V Krassioukov
PURPOSE: While we now appreciate that autonomic dysfunction can impact Wheelchair Rugby performance, this is currently not being assessed during classification, largely due to lack of a standardized and evidence-based strategy to assess autonomic function. Our aim, therefore, was to establish the optimal autonomic testing protocol that best predicts cardiovascular capacity during competition by comprehensively examining autonomic function in elite Wheelchair Rugby athletes with cervical SCI and thereby enhance the standardized classification...
April 27, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28452071/oxidative-stress-in-asthmatic-and-non-asthmatic-adolescent-swimmers-a-breathomics-approach
#20
Mariana Couto, Corália Barbosa, Diana Silva, Alisa Rudnitskaya, Luís Delgado, André Moreira, Sílvia M Rocha
We hypothesize that oxidative stress induced by trichloramine exposure during swimming could be related to etiopathogenesis of asthma among elite swimmers. AIM: To investigate the effect of a swimming training session on oxidative stress markers of asthmatic compared to non-asthmatic elite swimmers using exhaled breath (EB) metabolomics. METHODS: Elite swimmers annually screened in our department (n=27) were invited and those who agreed to participate (n=20, of which 9 with asthma) had EB collected (Tedlar(®) bags) before and after a swimming training session...
April 27, 2017: Pediatric Allergy and Immunology
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