نتایج جستجو برای: elite expressed elite athletes and coaches

تعداد نتایج: 16847423  

Journal: :Scandinavian journal of medicine & science in sports 2008
P-N Lemyre H K Hall G C Roberts

The purpose of this study was to investigate athlete burnout from a social-cognitive perspective by examining the relationship between social cognitive motivational variables at the start of a season and signs of burnout in elite athletes at the end of the season. Participants were 141 (F=60, M=81) elite winter sport athletes competing in Alpine skiing, Biathlon, Nordic Combined, Nordic skiing,...

Journal: :Journal of applied physiology 2015
Kristin L Jonvik Jean Nyakayiru Luc J C van Loon Lex B Verdijk

NITRATE RICH BEETROOT JUICE has become a popular sports supplement because of its proposed ergogenic properties. The effects of dietary nitrate supplementation on exercise performance have been attributed to its capacity to increase nitric oxide (NO) bioavailability. NO modulates many processes that are essential to exercise performance, such as regulation of blood flow, muscle contractility, m...

Journal: :Heart 2005
A Anastasakis C Kotsiopoulou A Rigopoulos A Theopistou N Protonotarios D Panagiotakos N Mammalis C Stefanadis

D ifferentiating between young, athletic patients with hypertrophic cardiomyopathy (HCM) and elite athletes sometimes can be problematic. Left ventricular hypertrophy is seen mainly in athletes participating in endurance sports. A conflict exists with regard to strength athletes. Recent investigations suggest that strength athletes who use anabolic steroids have increased left ventricular hyper...

Journal: :International journal of sport nutrition and exercise metabolism 2009
Hans Braun Karsten Koehler Hans Geyer Jens Kleiner Joachim Mester Wilhelm Schanzer

Little is known about the prevalence and motives of supplement use among elite young athletes who compete on national and international levels. Therefore, the current survey was performed to assess information regarding the past and present use of dietary supplements among 164 elite young athletes (16.6 +/- 3.0 years of age). A 5-page questionnaire was designed to assess their past and present ...

2010
Muriel Mignerat Luc K. Audebrand

Although the role of IT is salient in sporting mega-events (e.g. instant replay, goal-line technology), IS research has not yet paid any attention to the processes by which technologies are selected for and implemented at these mega-events, the strategies used by actors, nor the consequences of such implementations on actors in related sectors and industries. To tackle this underdeveloped resea...

Journal: :BMC Pulmonary Medicine 2009
Ridha Sallaoui Karim Chamari Abbas Mossa Zouhair Tabka Moktar Chtara Youssef Feki Mohamed Amri

BACKGROUND This study is a cross sectional analysis, aiming to evaluate if atopy is as a risk factor for exercise induced bronchoconstriction (EIB) among Tunisian athletes. METHODS Atopy was defined by a skin prick test result and EIB was defined as a decrease of at least 15% in forced expiratory volume in one second (FEV1) after 8-min running at 80-85% HRmaxTheo. The study population was com...

Journal: :International journal of sport nutrition and exercise metabolism 2011
Anni Heikkinen Antti Alaranta Ilkka Helenius Tommi Vasankari

The aim of this study was to evaluate the frequency of dietary supplement (DS) use among elite Finnish athletes in 2002 and 2009. In 2009, the authors also wanted to examine the reasons for athletes' DS use, whether athletes feel they have experienced benefits from their supplement use, and whether athletes had had an opportunity to consult dietary specialists. Cross-sectional studies were cond...

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