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Sports competition and performance

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https://www.readbyqxmd.com/read/28632066/differences-in-trunk-and-thigh-muscle-strength-endurance-and-thickness-between-elite-sailors-and-non-sailors
#1
Bernd Friesenbichler, Julia F Item-Glatthorn, Fabian Neunstöcklin, Nicola C Casartelli, Gaël Guilhem, Nicola A Maffiuletti
Dinghy sailors lean their upper body over the windward side of the boat ('hiking') to keep the boat's balance and maximise its speed. Sustaining the hiking position is essential for competitive performance and this study examined sport-specific differences of muscles relevant for hiking in elite sailors. Knee extensor muscle strength as well as trunk muscle strength, muscle endurance and muscle thickness were assessed in elite dinghy sailors (n = 15) and compared to matched, non-sailing controls (n = 15)...
March 1, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28628396/differential-in-maximal-aerobic-capacity-by-sex-in-collegiate-endurance-athletes-consuming-a-marginally-low-carbohydrate-diet
#2
Marissa N Baranauskas, Brian Miller, Jordan T Olson, Michelle Boltz, Laura Richardson, Matthew Juravich, Ronald Otterstetter
PURPOSE: Although current sports nutrition recommendations advocate for a high carbohydrate (CHO) intake among endurance athletes, recent research has suggested that training with low CHO availability may augment adaptations to aerobic training. The purpose of this study was to observe the dietary habits of collegiate distance runners and to investigate the effects of habitual CHO intake on aerobic performance [VO2max(post)] during a competitive season. METHODS: During an 8-week trial period, 12 (N = 12) collegiate track athletes recorded their self-selected dietary intake via 24-hour recall...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28605065/injuries-in-youth-track-and-field-are-perceived-to-have-multiple-level-causes-that-call-for-ecological-holistic-developmental-interventions-a-national-sporting-community-perceptions-and-experiences
#3
Jenny Jacobsson, Daniel Bergin, Toomas Timpka, James M Nyce, Örjan Dahlström
Engaging in competitive sports as a youth can have many health benefits, but recent studies also report a high risk for injury. The long-term purpose of this Swedish research program is to develop a framework for safe track and field training for young athletes (aged 12-15 years). The aim of this study was to establish what is perceived to contribute and cause injuries in youth track and field by compiling the best available experiential knowledge about the underlying factors and use this knowledge to identify appropriate areas to handle these in practical ways...
June 12, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28601355/yogic-breathing-practices-improve-lung-functions-of-competitive-young-swimmers
#4
Chirag Sunil Hakked, Ragavendrasamy Balakrishnan, Manjunath Nandi Krishnamurthy
BACKGROUND: Resistive breathing practices are known to improve endurance and performance in competitive swimmers. However, the effect of Pranayama or Yogic Breathing Practices (YBP) in improving respiratory endurance and performance of competitive swimmers remains un-investigated. OBJECTIVES: To study effects of yogic breathing practices on lung functions of swimmers. MATERIAL AND METHODS: Twenty seven national and international competitive swimmers of the age range 13-20 years, with 8...
June 7, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/28581692/examining-the-effects-of-rational-emotive-behavior-therapy-rebt-on-performance-outcomes-in-elite-paralympic-athletes
#5
Andrew G Wood, Jamie B Barker, Martin Turner, David Sheffield
Traditionally a psychotherapeutic intervention, Rational Emotive Behavior Therapy (REBT) is receiving increasing attention within the extant literature as an intervention to enhance the athletic performance and psychological wellbeing of competitive athletes. Whilst the benefits of REBT on psychological health are established, less is understood about the effects on athletic performance. The present study aimed to examine the immediate and maintained effects of REBT on physiological, psychological, and performance outcomes with elite Paralympic athletes...
June 5, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28581687/adverse-life-events-cardiovascular-responses-and-sports-performance-under-pressure
#6
Lee J Moore, Tom Young, Paul Freeman, Mustafa Sarkar
Research suggests that experiencing a moderate number of adverse life events can benefit future stress responses. This study explored the relationship between adverse life (i.e., non-sport) events and cardiovascular responses to, and performance during, a pressurized sporting task. One hundred participants (64 men, 36 women; Mage = 21.94 years, SDage = 4.98) reported the number of adverse life events (e.g., serious accident or injury) they had encountered before completing a pressurized dart-throwing task during which performance was recorded...
June 5, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28575009/a-novel-application-of-pagerank-and-user-preference-algorithms-for-assessing-the-relative-performance-of-track-athletes-in-competition
#7
Clive B Beggs, Simon J Shepherd, Stacey Emmonds, Ben Jones
Ranking enables coaches, sporting authorities, and pundits to determine the relative performance of individual athletes and teams in comparison to their peers. While ranking is relatively straightforward in sports that employ traditional leagues, it is more difficult in sports where competition is fragmented (e.g. athletics, boxing, etc.), with not all competitors competing against each other. In such situations, complex points systems are often employed to rank athletes. However, these systems have the inherent weakness that they frequently rely on subjective assessments in order to gauge the calibre of the competitors involved...
2017: PloS One
https://www.readbyqxmd.com/read/28574863/mephentermine-dependence-in-a-young-athlete-case-report-with-review-of-literature
#8
Swarndeep Singh, Ankit Gupta, Siddharth Sarkar
: Mephentermine is structurally related to amphetamines and is banned for its use as a performance-enhancing drug in competitive sports. Limited literature is available on management of mephentermine dependence. Here, we describe a case of mephentermine dependence followed by review of literature and a discussion about its management. A 20-year-old professional wrestler presented with high-dose intravenous mephentermine use, and rapid development of dependence, in the absence of any comorbid substance use or psychiatric disorder...
June 1, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28574286/changes-of-intima-media-thickness-in-marathon-runners-a-mid-term-follow-up
#9
Jan Müller, Valeria Dahm, Elke S Lorenz, Axel Pressler, Bernhard Haller, Viola Grabs, Martin Halle, Johannes Scherr
Objective Carotid intima-media thickness (IMT) is used to assess cardiovascular risk and progression of atherosclerosis. It is known that regular physical activity of moderate intensity has beneficial effects on the vasculature. However, it is still discussed controversially whether prolonged exercise, including participation in exhaustive competitive sports such as long-distance races, has also beneficial effects or might even be harmful regarding the cardiovascular system. Patients and methods Thirty-eight male marathon runners (45...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28571026/sport-society-and-anti-doping-policy-an-ethical-overview
#10
Andrew J Bloodworth, Mike McNamee
The purpose of this chapter is to provide an overview of the philosophical and ethical underpinnings of anti-doping policy. The nature of sport and its gratuitous logic is explored. The doping rules in sport, such as the Prohibited List, are ways of drawing a line to facilitate a certain sort of competition. Sports can be understood as a means of testing the natural physical abilities of the athlete, combined with the hard work they put into improving their performance. A test promoted by the anti-doping laws...
2017: Medicine and Sport Science
https://www.readbyqxmd.com/read/28568314/greater-circadian-disadvantage-during-evening-games-for-the-national-basketball-association-nba-national-hockey-league-nhl-and-national-football-league-nfl-teams-travelling-westward
#11
Jonathan Roy, Geneviève Forest
We investigated the effects of a circadian disadvantage (i.e. playing in a different time zone) on the winning percentages in three major sport leagues in North America: the National Basketball Association, the National Hockey League and the National Football League. We reviewed 5 years of regular season games in the National Basketball Association, National Hockey League and National Football League, and noted the winning percentage of the visiting team depending on the direction of travel (west, east, and same time zone) and game time (day and evening games)...
June 1, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28566813/kickboxing-review-anthropometric-psychophysiological-and-activity-profiles-and-injury-epidemiology
#12
REVIEW
M Slimani, H Chaabene, B Miarka, E Franchini, K Chamari, F Cheour
Kickboxing is one of the modern combat sports. The psychophysiological demands of a kickboxing competition require athletes to achieve high thresholds of several aspects of physical fitness. The aim of the current review is to critically analyse and appraise the kickboxer's anthropometric, physiological, physical and psychological attributes with the activity profile and injury epidemiology in order to provide practical recommendations for training as well as new areas of scientific research. The available information shows that both amateur and elite-level male kickboxers are characterized by a higher proportion of mesomorphy with a well-developed muscle mass and low body fat percentage...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28558442/specific-physiological-and-biomechanical-performance-in-elite-sub-elite-and-in-non-elite-male-team-handball-players
#13
Herbert Wagner, Philip X Fuchs, Serge P von Duvillard
BACKGROUND: Team handball is a dynamic sport game that is played professionally in numerous countries. However, knowledge about training and competition is based mostly on practical experience due to limited scientific studies. Consequently, the aims of our study were to compare specific physiological and biomechanical performance in elite, sub-elite and in non-elite male team handball players. METHODS: Thirty-six elite, sub-elite and non-elite male team handball players performed a game based performance test, upper-body and lower-body strength tests, 30m sprint test, counter movement jump test and an incremental treadmill running test...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28552834/high-impact-sport-after-hip-resurfacing-the-ironman-triathlon
#14
J Girard, A Lons, T Pommepuy, R Isida, K Benad, S Putman
BACKGROUND: Returning to high-impact sport is an increasingly frequent functional demand following hip replacement. The literature, however, is sparse on the subject and nonexistent regarding triathlon. We therefore conducted a retrospective study of hip resurfacing in triathlon players, to determine: (1) whether it is possible to return to this kind of sport; (2) if so, whether it is possible to return to the same level; and (3) how a resurfaced hip behaves under these conditions. HYPOTHESIS: Hip resurfacing allows return to competition level in long-distance triathlon...
May 25, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28538304/a-performance-analysis-of-a-stand-up-paddle-board-marathon-race
#15
Ben L Schram, Wayne A Hing, Mike Climstein, James W Furness
Stand-up paddle boarding (SUP) is a rapidly growing sport and recreational activity in which little scientific research exists. A review of the literature failed to identify a single article pertaining to the physiological demands of SUP competition. The purpose of this study was to conduct a performance analysis of a national-level SUP marathon race. Ten elite SUP athletes (6 male and 4 female athletes) were recruited from the Stand Up Paddle Surfing Association of Australia to have their race performance in the Australian Titles analyzed...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538294/effects-of-different-combinations-of-strength-power-and-plyometric-training-on-the-physical-performance-of-elite-young-soccer-players
#16
Ronaldo Kobal, Irineu Loturco, Renato Barroso, Saulo Gil, Rogério Cuniyochi, Carlos Ugrinowitsch, Hamilton Roschel, Valmor Tricoli
The combination of strength (ST) and plyometric training (PT) has been shown to be effective for improving sport-specific performance. However, there is no consensus about the most effective way to combine these methods in the same training session to produce greater improvements in neuromuscular performance of soccer players. Thus, the purpose of this study was to compare the effects of different combinations of ST and PT sequences on strength, jump, speed, and agility capacities of elite young soccer players...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28532704/the-bright-and-the-dark-sides-of-motor-simulation
#17
Maria Serena Panasiti, Giuseppina Porciello, Salvatore Maria Aglioti
While the acquisition of knowledge about the sensory, emotional, and motor states of others has long been thought to derive from abstract inferential operations, recent theories based on neuroscientific and psychological models emphasize that motor simulation is essential to a variety of complex functions ranging from the monitoring of one's own performance to the understanding of others' actions, and matching self and others' states to optimize social interactions. In this review, we discuss evidence that simulating the actions of others has both bright and dark sides...
May 19, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28530528/objectifying-tactics-athlete-and-race-variability-in-elite-short-track-speed-skating
#18
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/28515832/a-low-dose-caffeine-and-carbohydrate-supplement-does-not-improve-athletic-performance-during-volleyball-competition
#19
David R Pfeifer, Kelsey M Arvin, Courtney N Herschberger, Nicholas J Haynes, Matthew S Renfrow
Dietary supplements are widely used to enhance sport performance and the combination of carbohydrate and caffeine (CHO+CAF) has yielded particularly high performance gains. Though the effects of a CHO+CAF supplement have been studied in a laboratory environment, little research exists on the effects of supplementation during competition. Therefore, the purpose of this study was to determine the effects of a CHO+CAF supplement on athletic performance in competition. Eight female collegiate volleyball players completed three testing sessions under three different conditions separated by approximately one week each: CHO+CAF supplement, placebo (PBO), and control (CTL) using a randomized, cross-over design...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28508338/fluid-balance-in-team-sport-athletes-and-the-effect-of-hypohydration-on-cognitive-technical-and-physical-performance
#20
REVIEW
Ryan P Nuccio, Kelly A Barnes, James M Carter, Lindsay B Baker
Sweat losses in team sports can be significant due to repeated bursts of high-intensity activity, as well as the large body size of athletes, equipment and uniform requirements, and environmental heat stress often present during training and competition. In this paper we aimed to: (1) describe sweat losses and fluid balance changes reported in team sport athletes, (2) review the literature assessing the impact of hypohydration on cognitive, technical, and physical performance in sports-specific studies, (3) briefly review the potential mechanisms by which hypohydration may impact team sport performance, and (4) discuss considerations for future directions...
May 15, 2017: Sports Medicine
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