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https://www.readbyqxmd.com/read/28542091/normative-data-for-critical-speed-and-d-for-high-level-male-rugby-players
#1
Mark Kramer, Ida E Clark, Nick Jamnick, Cody Strom, Robert W Pettitt
The critical speed (CS) concept helps characterize the aerobic and anaerobic fitness of an athlete. Rugby players should hypothetically have modest CS values but extremely high curvature constant (D') values, yet, normative data are currently unavailable. To develop normative data of CS and D' for high-level male rugby players, a total of 30 male rugby players, were recruited from the Eastern Cape of South Africa. All subjects performed the running 3-min all-out exercise test (3 MT) using global positioning system (GPS) technology to determine CS and D'...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538318/do-fencers-require-a-weapon-specific-approach-to-strength-and-conditioning-training
#2
Anthony N Turner, Chris J Bishop, Jon A Cree, Michael L Edwards, Shyam Chavda, Paul J Read, David M J Kirby
Turner, AN, Bishop, CJ, Cree, JA, Edwards, ML, Chavda, S, Read, PJ, and Kirby, DMJ. Do fencers require a weapon-specific approach to strength and conditioning training? J Strength Cond Res 31(6): 1662-1668, 2017-There are 3 types of weapons used in Olympic fencing: the épée, foil, and sabre. The aim of this study was to determine if fencers exhibited different physical characteristics across weapons. Seventy-nine male (n = 46) and female (n = 33) national standard fencers took part in this study. Fencers from each weapon (male and female), i...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538307/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#3
Jan Schimpchen, Maximilian Wagner, Alexander Ferrauti, Michael Kellmann, Mark Pfeiffer, Tim Meyer
Schimpchen, J, Wagner, M, Ferrauti, A, Kellmann, M, Pfeiffer, M, and Meyer, T. Can cold water immersion enhance recovery in elite Olympic weightlifters? An individualized perspective. J Strength Cond Res 31(6): 1569-1576, 2017-We investigated whether cold water immersion (CWI) after intensive training sessions can enhance recovery in elite Olympic weightlifters, taking into account each athlete's individual response pattern. The entire German male Olympic weightlifting national team participated in the study (n = 7), ensuring collection of data from elite athletes only...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28536531/caffeine-and-bicarbonate-for-speed-a-meta-analysis-of-legal-supplements-potential-for-improving-intense-endurance-exercise-performance
#4
REVIEW
Peter M Christensen, Yusuke Shirai, Christian Ritz, Nikolai B Nordsborg
A 1% change in average speed is enough to affect medal rankings in intense Olympic endurance events lasting ~45 s to 8 min which for example includes 100 m swimming and 400 m running (~1 min), 1,500 m running and 4000 m track cycling (~4 min) and 2,000 m rowing (~6-8 min). To maximize the likelihood of winning, athletes utilizes legal supplements with or without scientifically documented beneficial effects on performance. Therefore, a continued systematic evidence based evaluation of the possible ergogenic effects is of high importance...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28535363/elite-status-maintained-a-12-year-physiological-and-performance-follow-up-of-two-olympic-champion-rowers
#5
Pavle Mikulic, Nikola Bralic
This case study reports the results of a 12-year (2005-2016) follow-up study of two Olympic champion rowers. The rowers were prospective athletes at the junior level when the study began, and we monitored their relevant physiological and performance data annually. Our findings indicated that their V̇O2max gradually increased up to about 22 years of age and leveled off at a value of approximately 7 l·min(-1) with minimal fluctuations thereafter. However, the variables that directly influence the V̇O2max changed...
May 23, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28509868/compact-eucapnic-voluntary-hyperpnoea-apparatus-for-exercise-induced-respiratory-disease-detection
#6
Lulu Wang, Ahmed Al-Jumaily
Eucapnic voluntary hyperpnoea (EVH) challenge provides objective criteria for exercise-induced asthma (EIA) or exercise-induced bronchoconstriction (EIB), and it was recommended to justify the use of inhaled β₂-agonists by athletes for the Olympics. This paper presents the development of a compact and easy-to-use EVH apparatus for assessing EIB in human subjects. The compact apparatus has been validated on human subjects and the results have been compared to the conventional EVH system. Twenty-two swimmers, including eleven healthy subjects and eleven subjects who had been physician-diagnosed with asthma, were recruited from sport and recreation centers throughout Auckland, New Zealand...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28504855/relationships-between-digit-ratio-2d-4d-and-basketball-performance-in-australian-men
#7
Nathan A Frick, Melissa J Hull, John T Manning, Grant R Tomkinson
OBJECTIVE: To investigate relationships between the digit ratio (2D:4D) and competitive basketball performance in Australian men. METHODS: Using an observational cross-sectional design a total of 221 Australian basketball players who competed in the Olympic Games, International Basketball Federation World Championships/Cup, Australian National Basketball League, Central Australian Basketball League or socially had their 2D:4Ds measured. Analysis of variance was used to assess differences in mean 2D:4Ds between men playing at different competitive standards, with relationships between 2D:4Ds and basketball game-related statistics assessed using Pearson's product moment correlations in men playing at a single competitive standard...
May 6, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28503526/be-seeded-or-not-be-seeded-a-study-with-olympic-judo-athletes
#8
Leandro Marques Guilheiro, Emerson Franchini
The main purpose of the present study was to calculate the probability-based on a Bayesian approach-to win a medal in the Olympic Games given the athlete is seeded and to verify if the number one ranked athlete has any advantage compared to other seeded athletes concerning his/her chances to be Olympic champion. For this, data from athletes who took part in the London 2012 and Rio 2016 Olympic Games were considered. For males the probability of seeded athletes to win a medal was 41.1% and 42.9%, while for females it was 35...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28501805/neurological-tests-improve-after-olympic-style-boxing-bouts-a-pretournament-and-post-tournament-study-in-the-2016-women-s-world-boxing-championships
#9
David R Howell, William P Meehan, Michael P Loosemore, Joseph Cummiskey, Jean-Paul Grabner von Rosenberg, David McDonagh
AIM: To prospectively examine the neurocognitive, postural, dual-task and visual abilities of female Olympic-style boxers before and after participation in a tournament. METHODS: Sixty-one females completed the modified Balance Error Scoring System (mBESS), King-Devick test and 3 m timed-up-and-go test in single-task and dual-task conditions. A subset (n=31) completed the CogState computerised neurocognitive test. Initial testing was completed prior to the 2016 Women's World Boxing Championships; each participant repeated the testing protocol within a day of elimination...
May 13, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28501022/sociodemographic-profile-of-an-olympic-team
#10
D W Lawrence
OBJECTIVES: To document the distribution of sociodemographic markers (race and relative access to wealth) in athletes participating at the summer and Winter Olympic Games (OGs). STUDY DESIGN: Cross-sectional descriptive epidemiological study. METHODS: Sociodemographic data were collected from publically available resources for all athletes representing four countries (Canada, United States of America, Great Britain and Australia) at the 2014 Sochi Winter OGs and 2016 Rio Summer OGs...
May 10, 2017: Public Health
https://www.readbyqxmd.com/read/28493064/evidence-based-prerequisites-and-precursors-of-athletic-talent-a-review
#11
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/28488905/tactical-behaviours-in-men-s-800m-olympic-and-world-championship-medallists-a-changing-of-the-guard
#12
Gareth N Sandford, Simon Pearson, Sian V Allen, Rita M Malcata, Andrew E Kilding, Angus Ross, Paul B Laursen
PURPOSE: To assess the longitudinal evolution of tactical behaviours used to medal in Men's 800m (M800) Olympic Games (OG) or World Championship (WC) events in the recent competition era (2000-2016). METHODS: Thirteen OG and WC events were characterised for first and second lap splits using available footage from YouTube. Positive pacing strategies were defined as a faster first lap. Season's best M800 time and world ranking, reflective of an athlete's 'peak condition', was obtained to determine relationships between adopted tactics and physical condition prior to the championships...
May 10, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28488832/road-to-the-olympics-physical-fitness-of-medalists-of-the-canoe-sprint-junior-european-and-world-championship-events-over-the-past-20-years
#13
Viktor Bielik, Leonard Lendvorský, Lukáš Lengvarský, Peter Lopata, Róbert Petriska, Jana Pelikánová
BACKGROUND: In this article we aimed to find out whether there is a difference in physiological, anthropometric and power variables between medalists in junior international Championship events (MJCH) and the remaining members of the national team (NT) in flat water canoe sprint. METHODS: Sixty male junior kayakers from Slovak NT were tested annually between years 1995 and 2016. Sixteen of them won at least one medal (gold, silver or bronze) at junior international Championship...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480686/variation-in-plasma-cytokine-concentration-during-a-training-season-in-elite-kayakers
#14
Grasiely Faccin Borges, Luis Rama, Humberto Moreira Carvalho, Joana Gaspar, Amandio Santos, Alain Massart, Beatriz Gomes, Luciele Guerra Minuzzi, Artur Paiva, Ana M Teixeira
BACKGROUND: The purpose of this study was to investigate the differences in cytokines levels in the peripheral blood of kayakers at different moments of training. MATERIALS AND METHODS: The sample comprised 12 elite kayakers preparing for the Beijing Olympic Games. Blood samples were collected at different time points of the training season: baseline (t0 - November) after six week of off-training and before the start of the training season; t1 (January) at week 11 after a period of high-volume training; t2 (April) at week 26 at the end of a period of high intensity training sessions; t3 (June) at week 31 after a competitive period...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28462576/world-and-olympic-mountain-bike-champions-anthropometry-body-composition-and-somatotype
#15
Cristóbal Sánchez-Muñoz, José J Muros, Mikel Zabala
BACKGROUND: The aim of the study was to describe the anthropometric profile of male Olympic cross country (XCO) mountain bikers. METHODS: Fifty one XCO bikers participated in this study, divided into an elite group who competed in top level international competitions, and a non-elite group who competed at a national level. The elite group was further classified according to whether they had been world or Olympic champion mountain bikers (WOC) or not (NWOC). The anthropometric profiles included the measurements of height, weight, arm span, skinfolds, girths, and breadths...
April 28, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28459948/associations-between-air-quality-changes-and-biomarkers-of-systemic-inflammation-during-the-2014-nanjing-youth-olympics-a-quasi-experimental-study
#16
Huichu Li, Lian Zhou, Cuicui Wang, Renjie Chen, Xiaoying Ma, Bin Xu, Lilin Xiong, Zhen Ding, Xiaodong Chen, Yun Zhou, Yan Xu, Haidong Kan
There is increasing interest in quasi-experimental research to evaluate whether actions taken to improve air quality will benefit public health. We conducted a quasi-experimental study to evaluate inflammatory response to changes in air quality during the 2014 Nanjing Youth Olympics in China. We repeatedly measured 8 biomarkers of systemic inflammation in 31 healthy adults and obtained hourly air pollutant concentrations from a nearby fixed-site monitoring station. We used linear mixed-effect models to examine the associations between air quality changes and blood biomarkers...
April 28, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28453398/assessment-of-passive-drag-in-swimming-by-numerical-simulation-and-analytical-procedure
#17
Tiago M Barbosa, Rui Ramos, António J Silva, Daniel A Marinho
The aim was to compare the passive drag-gliding underwater by a numerical simulation and an analytical procedure. An Olympic swimmer was scanned by computer tomography and modelled gliding at a 0.75-m depth in the streamlined position. Steady-state computer fluid dynamics (CFD) analyses were performed on Fluent. A set of analytical procedures was selected concurrently. Friction drag (Df), pressure drag (Dpr), total passive drag force (Df+pr) and drag coefficient (CD) were computed between 1.3 and 2.5 m · s(-1) by both techniques...
April 28, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28452787/nutrient-recovery-from-airplane-wastewater-composition-treatment-and-ecotoxicological-assay
#18
Jorge Luiz da Paixão Filho, Adriano Luiz Tonetti, Martha Tavanielli Guimarães, Dailto Silva
For the 2014 World Cup and the 2016 Olympic Games, Brazil has expanded its airport infrastructure. This will lead to an increase in wastewater generation from aircrafts. This wastewater is traditionally taken from the aircrafts and disposed in the public sewage collection system. However, this residual water may have a different composition than the usual sanitary sewage. Therefore, it is important to study an alternative to treat this kind of wastewater. Thus, the objective of this study was to characterize and analyze the treatment of wastewater from airplane toilets through chemical precipitation for the removal of ammonia in the form of struvite...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28445895/-sports-injuries-and-illnesses-of-the-german-national-team-during-the-2016-olympic-summer-games-in-rio-de-janeiro
#19
Casper Grim, Thilo Hotfiel, Martin Engelhardt, Sydney Plewinski, Olav Spahl, Bernd Wolfarth
No abstract text is available yet for this article.
January 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28445078/effects-of-high-intensity-interval-training-on-canoeing-performance
#20
Ming-Ta Yang, Mien-Mien Lee, Shu-Ching Hsu, Kuei-Hui Chan
The purpose of this study was to compare the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) utilizing a canoeing ergometer on endurance determinants, as well as aerobic and anaerobic performances among flat-water canoeists. Fourteen well-trained male flat-water canoeists were divided into an HIIT group or an MICT group. All subjects performed a continuous graded exercise test (GXT) and three fixed-distance (200, 500, and 1000 m) performance tests on a canoeing ergometer to determine canoeing economy, peak oxygen uptake (VO2peak), and power at VO2peak, and to calculate the critical velocity (CV) and anaerobic work capacity before and after the training programmes...
April 26, 2017: European Journal of Sport Science
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