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https://www.readbyqxmd.com/read/28107362/population-muscle-strength-predicts-olympic-medal-tallies-evidence-from-20-countries-in-the-pure-prospective-cohort-study
#1
Darryl P Leong, Martin McKee, Salim Yusuf
BACKGROUND: National sporting achievement at the Olympic Games is important for national pride and prestige, and to promote participation in sport. Summer Olympic Games medal tallies have been associated with national wealth, and also social development and healthcare expenditure. It is uncertain however, how these socioeconomic factors translate into Olympic success. The objective of this study was therefore to examine the relationship between population muscle strength and Olympic medal tallies...
2017: PloS One
https://www.readbyqxmd.com/read/28103737/a-multidimensional-approach-to-performance-prediction-in-olympic-distance-cross-country-mountain-bikers
#2
Andrew R Novak, Kyle J M Bennett, Job Fransen, Ben J Dascombe
This study adopted a multidimensional approach to performance prediction within Olympic distance cross-country mountain biking (XCO-MTB). Twelve competitive XCO-MTB cyclists (VO2max 60.8 ± 6.7 ml · kg(-1)( )· min(-1)) completed an incremental cycling test, maximal hand grip strength test, cycling power profile (maximal efforts lasting 6-600 s), decision-making test and an individual XCO-MTB time-trial (34.25 km). A hierarchical approach using multiple linear regression analyses was used to develop predictive models of performance across 10 circuit subsections and the total time-trial...
January 20, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28102875/prevalence-of-abnormal-electrocardiograms-in-swiss-elite-athletes-detected-with-modern-screening-criteria
#3
Tilman Perrin, Lukas Daniel Trachsel, Simon Schneiter, Andrea Menafoglio, Silvia Albrecht, Tony Pirrello, Prisca Eser, Laurent Roten, Boris Gojanovic, Matthias Wilhelm
AIMS OF THE STUDY: Sudden cardiac arrest in athletes is a rare but dramatic event. The value of a routine electrocardiogram (ECG) during preparticipation screening (PPS) remains controversial, partly because of the relatively high number of false positive findings. Our study aimed to evaluate the prevalence of abnormal ECGs in consecutive Swiss elite athletes, overall and with regard to different sports classes, using modern screening criteria. METHODS: We analysed the 12-lead resting ECGs of high-level elite athletes (age ≥14 years) recorded at the Swiss Olympic Medical Centre Magglingen between 2013 and 2016 during routine PPS...
January 19, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28097377/-the-olympic-motto-of-pathology
#4
EDITORIAL
K W Schmid
No abstract text is available yet for this article.
January 17, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28095083/physiological-capacity-and-training-routines-of-elite-cross-country-skiers-approaching-the-upper-limits-of-human-endurance
#5
Øyvind Sandbakk, Hans-Christer Holmberg
Cross-country skiing is one of the most demanding of endurance sports, involving protracted competitions on varying terrain employing a variety of skiing techniques that require upper- and/or lower-body work to different extents. Through more effective training and extensive improvements in equipment and track preparation, the speed of cross-country ski races has increased more than that of any other winter Olympic sport and, in addition, new types of racing events have been introduced. To a certain extent this has altered the optimal physiological capacity required to win and the training routines of successful skiers have evolved accordingly...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28095069/the-evolution-of-champion-cross-country-skier-training-from-lumberjacks-to-professional-athletes
#6
Øyvind Sandbakk
Competitive cross-country (XC) skiing has traditions extending back to the mid-19th century, and was included as a men's event in the first Winter Games in 1924. Since then, tremendous improvements in equipment, track preparation, and knowledge about training have prompted greater increases in XC skiing speeds than in any other Olympic sport. In response, this commentary focuses on how the training of successful XC skiers has evolved, with interviews and training data from surviving Norwegian world and Olympic XC champions as primary sources...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28094487/blood-doping-at-the-olympic-games
#7
Kenneth D Fitch
BACKGROUND: The objective of this paper was to review our knowledge of athletes who have, are believed to have or have attempted to engage in blood doping to enhance their performance at an Olympic Games. METHOD: The paper focused on the Games from Munich 1972 to London 2012 and the author had a medical role at each of the Olympics that is discussed. RESULTS: The study revealed that Olympic athletes have benefitted from manipulating their blood by re--infusion of autologous or infusion of homologous blood and by administering erythropoiesis stimulating agents, notably the three generations of erythropoietins...
January 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28080120/a-goal-bias-in-action-the-boundaries-adults-perceive-in-events-align-with-sites-of-actor-intent
#8
Dani Levine, Kathy Hirsh-Pasek, Amy Pace, Roberta Michnick Golinkoff
We live in a dynamic world comprised of continuous events. Remembering our past and predicting future events, however, requires that we segment these ongoing streams of information in a consistent manner. How is this segmentation achieved? This research examines whether the boundaries adults perceive in events, such as the Olympic figure skating routine used in these studies, align with the beginnings (sources) and endings (goals) of human goal-directed actions. Study 1 showed that a group of experts, given an explicit task with unlimited time to rewatch the event, identified the same subevents as one another, but with greater agreement as to the timing of goals than sources...
January 12, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28068210/how-players-exploit-variability-and-regularity-of-game-actions-in-female-volleyball-teams
#9
Ana Ramos, Patrícia Coutinho, Pedro Silva, Keith Davids, Isabel Mesquita
Variability analysis has been used to understand how competitive constraints shape different behaviours in team sports. In this study, we analysed and compared variability of tactical performance indices in players within complex I at two different competitive levels in volleyball. We also examined whether variability was influenced by set type and period. Eight matches from the 2012 Olympics competition and from the Portuguese national league in the 2014-2015 season were analysed (1496 rallies). Variability of setting conditions, attack zone, attack tempo and block opposition was assessed using Shannon entropy measures...
January 9, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28039126/are-olympic-athletes-free-from-cardiovascular-diseases-systematic-investigation-in-2352-participants-from-athens-2004-to-sochi-2014
#10
Antonio Pelliccia, Paolo Emilio Adami, Filippo Quattrini, Maria Rosaria Squeo, Stefano Caselli, Luisa Verdile, Viviana Maestrini, Fernando Di Paolo, Cataldo Pisicchio, Roberto Ciardo, Antonio Spataro
CONTEXT: Olympic athletes represent model of success in our society, by enduring strenuous conditioning programmes and achieving astonishing performances. They also raise scientific and clinical interest, with regard to medical care and prevalence of cardiovascular (CV) abnormalities. OBJECTIVE: Our aim was to assess the prevalence and type of CV abnormalities in this selected athlete's cohort. DESIGN, SETTING AND PARTICIPANTS: 2352 Olympic athletes, mean age 25±6, 64% men, competing in 31 summer or 15 winter sports, were examined with history, physical examination, 12-lead and exercise ECG and echocardiography...
December 30, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28035587/prevalence-of-back-pain-in-sports-a-systematic-review-of-the-literature
#11
REVIEW
Katharina Trompeter, Daniela Fett, Petra Platen
BACKGROUND: Back pain is a frequent health problem in the general population. The epidemiology of back pain in the general population is well researched, but detailed data on the prevalence and risk factors of back pain in athletes are rare. OBJECTIVE: The primary objective was to review articles about back pain in athletes to provide an overview of its prevalence in different sports and compare its prevalence among various types of sports and the general population...
December 29, 2016: Sports Medicine
https://www.readbyqxmd.com/read/28033124/variances-in-strength-and-conditioning-practice-in-elite-rugby-union-between-the-northern-and-southern-hemispheres
#12
Thomas W Jones, Andrew Smith, Lindsay S Macnaughton, Duncan N French
The strength and conditioning (S&C) practices in elite Rugby Union (RU) have previously been detailed. There is also research which indicates playing styles can differ between Northern hemisphere (NH) and Southern hemisphere (SH) teams. It is not presently known if these variances in playing styles are reflected in the S&C practices of those supporting NH and SH teams. As such, the present study examines any variances in S&C practices between those supporting NH and SH elite level teams. A validated questionnaire was employed that comprised 7 sections; personal details, physical testing, strength and power development, concurrent training, unique aspects of the programme and any further relevant information regarding prescribed training programmes...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28032040/the-olympic-legacy-journal-metrics-in-sports-medicine-and-dentistry
#13
REVIEW
Joel Thomas, Tom W M Walker, Stuart Miller, Alistair Cobb, Steven J Thomas
Systematic analysis of integral aspects within sport enables improvement in performance. One key aspect is the management and prevention of injuries. Bibliometrics is a systematic method for evaluating research output. It may be expected that the quantity and quality of sports injury research over time may strongly correlate with the timing of the Olympic games. This study was conducted to determine the effect of the Olympic legacy on academic sports medicine and evidence to prevent injuries of the face and teeth...
November 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28030533/physical-and-physiological-profile-of-wrestler-athletes-short-review
#14
Helmi Chaabene, Yassine Negra, Raja Bouguezzi, Bessem Mkaouer, Emerson Franchini, Ursula Julio, Younés Hachana
Wrestling is one of the oldest combat sports, disputed since the ancient Greek Olympic Games. This combat sport discipline has caught the attention of scientists since 1943 which is the date that matches the appearance of the first scientific research dealing with wrestling. The current short review aimed to summarize and critically analyze the scientific literature related to wrestling's physical and physiological attributes and to provide practical recommendations for testing/training together with new perspective and areas of future scientific research...
December 24, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28005724/one-global-community-under-god-in-one-arena-the-spirit-of-the-olympics-put-us-all-together-avoiding-global-diversity-to-further-move-forward
#15
Mutaz B Habal
No abstract text is available yet for this article.
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27999729/a-non-operative-approach-to-the-management-of-chronic-exertional-compartment-syndrome-in-a-triathlete-a-case-report
#16
Cristiana Kahl Collins, Brad Gilden
BACKGROUND & PURPOSE: Chronic Exertional Compartment Syndrome (CECS) causes significant exercise related pain secondary to increased intra-compartmental pressure (ICP) in the lower extremities. CECS is most often treated with surgery with minimal information available on non-operative approaches to care. This case report presents a case of CECS successfully managed with physical therapy. STUDY DESIGN: Case report. CASE DESCRIPTION: A 34-year-old competitive triathlete experienced bilateral anterior and posterior lower leg pain measured with a numerical pain rating scale of 7/10 at two miles of running...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27994826/crossfit-%C3%A2-instructor-demographics-and-practice-trends
#17
Gregory R Waryasz, Vladimir Suric, Alan H Daniels, Joseph A Gil, Craig P Eberson
CrossFit(®) is an increasingly popular exercise modality that uses high intensity power training. The literature to date regarding CrossFit(®) has focused on its benefits to VO2 Max, body composition and the motivational variables of participants of CrossFit(®). A computerized survey was distributed to CrossFit(®) instructors using Survey Monkey(®) (Palo Alto, CA, USA). One hundred and ninety-three CrossFit(®) instructors responded to the survey. Of these 86.6% (155/179) reported being a certified CrossFit(®) instructor with 26...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/27981877/performing-under-pressure-exploring-the-psychological-state-underlying-clutch-performance-in-sport
#18
Christian Swann, Lee Crust, Patricia Jackman, Stewart A Vella, Mark S Allen, Richard Keegan
Clutch performance is improved performance under pressure. However, little research has examined the psychological state experienced by athletes in these situations. Therefore, this study qualitatively examined the subjective experience underlying clutch performance across a range of sports (e.g., team, individual) and standards (Olympic to recreational athletes). Sixteen athletes (Mage = 27.08 years; SD = 6.48) took part in in-depth, semi-structured interviews primarily after an exceptional performance (M = 4...
December 16, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27965597/transcranial-direct-current-stimulation-effects-on-athletes-cognitive-performance-an-exploratory-proof-of-concept-trial
#19
Davimar M M Borducchi, July Silveira Gomes, Henrique Akiba, Quirino Cordeiro, José Henrique M Borducchi, Lívia Stocco Sanches Valentin, Gabrielle M Borducchi, Álvaro Machado Dias
Among the 2016 Olympic and Paralympic Games' unforgettable moments, one could not overlook performances by Phelps and Bolt, which challenge old premises about the maximum extension of individual supremacism in ultracompetitive modalities and the doping scandals. Different media channels resonated these two trends, with an unseen rise on discussions about traits and practices that may set ultrahigh performance athletes apart from the more ordinary ones. Yet, some key issues remain undebated. This paper aims to add to this debate, with a proof of concept trial, which investigates whether transcranial direct current stimulation (tDCS) may serve as an aid for professional athletes...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27930445/motion-and-muscle-activity-are-affected-by-instability-location-during-a-squat-exercise
#20
Brian C Nairn, Chad A Sutherland, Janessa D M Drake
Squat exercise training using instability devices have become increasingly popular for a multitude of reasons. Many devices generate instability at the feet and provide a bottom-up perturbation; however, the effect of a top-down instability device during a squat remains unclear. In order to induce instability at the upper body, a water-filled cylinder called the Attitube® was used. This study analyzed the effects of instability location (top-down, bottom-up, no instability) during a squat exercise in terms of kinematics and muscle activation...
November 19, 2016: Journal of Strength and Conditioning Research
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