Oxidative stress and nitrite dynamics under maximal load in elite athletes: relation to sport type

2011 ◽  
Vol 355 (1-2) ◽  
pp. 273-279 ◽  
Author(s):  
Dejan Cubrilo ◽  
Dusica Djordjevic ◽  
Vladimir Zivkovic ◽  
Dragan Djuric ◽  
Dusko Blagojevic ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Elite Athletes ◽  
Maximal Load ◽  
Sport Type

scholarly journals The connection between academic and athletic performance among elite university student athletes

2015 ◽  
Vol 9 (3) ◽  
pp. 19-26
Author(s):  
Andrea Lenténé Puskás
Keyword(s):  
Academic Performance ◽  
Elite Athletes ◽  
Team Sport ◽  
Sport Performance ◽  
Division Iii ◽  
Sport Type ◽  
Jel Code ◽  
High Level ◽  
Or Team ◽  
The University

Athletes in higher education are not only expected to produce high level performance but to find the balance between the preparation for post-athletic life and the requirements of the university. The objective of this study is to explore the connections between academic performance and level of sport. Also, to elaborate on the role of relevant policy regulations and institutional support that help elite athletes meet academic requirements. Data collection was conducted by means of online questionnaires involving athletes receiving sport scholarships at the University of Debrecen (N=159). The data from questionnaires were processed by using SPSS 18. Version software. For data analyse four groups were extracted based on level of sport performance and involvement: international elite, division I, division II, division III. The results indicate that the academic performance on the two international elite of sport did not differ from the average, and that these athletes did not experience any difficulties earning course credits at the university while being engaged in doing sport. In most cases, elite athletes did not apply for the various kind of support instruments, thus, they are able to balance athletic preparation and academic requirements without supportive modifications of university policies. The results also shed light on the fact that the academic performance does not only depend on the level of sport and the chosen major at the university, but it is also influenced by the time devoted to study and training, and the sport type (individual or team sport). There are differences observed between athletes participating in individual or team sport concerning the general average of grades, the effectiveness of earning credits, the number of weekly training, as well as the time devoted to training in preparatory and competitive periods. According to the results, the various amount of time devoted to study or sport does not necessarily result in academic performance decline. In addition, results support that athletes do keep academic studies rather important and they are aware that university years are considered to be a significant period in preparation for post-athletic life. JEL code: Z20

scholarly journals Do Athletes Imagine Being the Best, or Crossing the Finish Line First? A Mixed Methods Analysis of Construal Levels in Elite Athletes’ Spontaneous Imagery

2016 ◽  
Vol 13 (2) ◽  
pp. 216-241 ◽  
Author(s):  
Celina Kacperski ◽  
Roberto Ulloa ◽  
Craig Hall
Keyword(s):  
Mixed Methods ◽  
Mixed Methods Research ◽  
Phenomenological Study ◽  
Elite Athletes ◽  
Qualitative Interviews ◽  
Finish Line ◽  
Correction Technique ◽  
Sport Type ◽  
Spontaneous Imagery ◽  
Construal Levels

The purpose of this article is to illustrate data transformation in a mixed methods research phenomenological study, investigating how athletes use concrete and abstract spontaneous imagery in and around competition. To achieve this, we combined the application of co-occurring codes and numerical transformation in a novel way. A thematic analysis of qualitative interviews with 12 elite athletes identified concrete imagery to focus on strategy generation, error correction, technique, and preparation, and abstract imagery to focus on desirability, symbolic and verbal representations, and regulation of affect, arousal, and mastery. Statistical analysis identified that subjective effectiveness of imagery significantly differed for sport type (reactive/static) and competition times. Researchers wishing to apply statistical analyses to qualitative data are encouraged to employ our methodology.

scholarly journals Prevalence of Sexual Harassment among Norwegian Female Elite Athletes Inrelation to Sport Type

2004 ◽  
Vol 39 (4) ◽  
pp. 373-386 ◽  
Author(s):  
Kari Fasting ◽  
Celia Brackenridge ◽  
Jorunn Sundgot-Borgen
Keyword(s):  
Sexual Harassment ◽  
Elite Athletes ◽  
Sport Type

scholarly journals Genetic Variation of the Human ACE and ACTN3 Genes and Their Association With Functional Muscle Properties in Lithuanian Elite Athletes

Medicina ◽  
2011 ◽  
Vol 47 (5) ◽  
pp. 40 ◽  
Author(s):  
Valentina Ginevičienė ◽  
Aidas Pranculis ◽  
Audronė Jakaitienė ◽  
Kazys Milašius ◽  
Vaidutis Kučinskas
Keyword(s):  
Grip Strength ◽  
Physical Performance ◽  
Elite Athletes ◽  
Vertical Jump ◽  
Muscle Performance ◽  
Polymorphism Analysis ◽  
Muscle Properties ◽  
Type Selection ◽  
Sport Type ◽  
Strong Candidate

Background and Objective. Based on the results of many studies, the angiotensinconverting enzyme (ACE) and the α-actinin-3 (ACTN3) genes are considered strong candidate genes associated with human physical performance. On the other hand, the data regarding the association of the ACE I/D and ACTN3 R/X polymorphisms with human physical performance in different populations have been conflicting. The objective of our research was to evaluate the significance of these genetic variants on muscle performance phenotype in Lithuanian athletes. Material and Methods. The study involved 193 Lithuanian elite athletes and 250 controls from the general Lithuanian population. Genotyping was performed by polymerase chain reaction and/ or restriction fragment length polymorphism analysis. Anthropometric measurements and muscle strength (grip strength and vertical jump) were measured. Results. It was determined that ACE I/I and I/D genotypes were more frequent in the athlete group compared with the general Lithuanian population. The results of grip strength and vertical jum p were better in the athletes with the ACE I/I and ACTN3 X/X genotype compared with the athletes with ACE D/D and ACTN3 R/R, respectively. Conclusions. The ACE I and ACTN3 X alleles determine speed and power for Lithuanian athletes. In line with other researchers, it can be confirmed that the absence of a functional ACTN3 in fast-twitch muscle fibers is compensated. Lithuanian athletes who are carriers of the ACE I/I and I/D as well as ACTN3 X/X and R/X genotypes have the potential to achieve better results in power-requiring sports; therefore, the analyzed polymorphisms of these genes might be used as the criteria for the sport type selection.

scholarly journals Comparisons of Antioxidant Status in Different Sport Type Athletes

2007 ◽  
Vol 13 (2) ◽  
pp. 37-42
Author(s):  
Ying Chih HO ◽  
Shu Ling LI ◽  
Fu An CHEN ◽  
Mei Chich HSU
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Antioxidant Status ◽  
Original Training ◽  
Distance Runners ◽  
Long Distance ◽  
Weight Lifters ◽  
Sport Type ◽  
High Oxidative Stress ◽  
Heavy Training

LANGUAGE NOTE | Document text in English; abstract also in Chinese. This study investigated the resting levels of malondialdehyde plus 4-hydroxy 2-(E)-nonenal (MDA+4-HNE) in plasma, erythrocyte superoxide dimutase (SOD) and glutathione (GSH) in 12 long-distance runners (LR), 12 weight lifters (WL), and 12 age match sedentary nonathletes (SN). The subjects were asked to maintain the lifestyle and original training (Monday to Friday) and were requested not to take any medicines and supplementation two weeks ago before sampling. No significant differences were found in MDA+4-HNE levels among three groups. The LR group had lower erythrocyte SOD activities than SN group (p <0.05). Additionally, the erythrocyte GSH concentrations in WL group was significantly lower than LR and SN groups (p <0.05). The results indicated that the adaptation and changes in resting antioxidant status would be different due to various exercise training modes. Furthermore, athletes should take the antioxidant supplementation appropriately to overcome the high oxidative stress cause by heavy training. 本實驗比較經長期運動訓練之12位舉重選手、12位長跑選手，以及12未受訓練的坐式生活者，其休息狀態下血液中抗氧化數 值之差異。抗氧化數據包括血漿中之MDA+4HNE，紅血球中之過氧化物歧化酶(superoxide dismutase; SOD)之活性及穀胱甘肽(glutathione; GSH)之含量。受試者維持其原本之生活型態及訓練(星期一至星期五)，從兩個星期前即不能服用藥物及營養補充劑。結果顯示三組間血漿中脂質過氧化產物MDA+4HNE之濃度並無明顯差異，長跑選手紅血球SOD之活性明顯較坐式生活者來得低(p<.05)，舉重選手紅血球GSH含量明顯較其他兩組來得低(p<.05)。結果顯示，不同的訓練可能會造成不同型式的氧化壓力，經過長期之適應後，體內的抗氧化狀態也有所差異。此外，為了抵抗高度訓練所造成之氧化壓力，運動員應該適當的補充抗氧化劑。

scholarly journals Disordered eating and eating disorders in male elite athletes: a scoping review

2020 ◽  
Vol 6 (1) ◽  
pp. e000801
Author(s):  
Yannis Karrer ◽  
Robin Halioua ◽  
Sonja Mötteli ◽  
Samuel Iff ◽  
Erich Seifritz ◽  
...  
Keyword(s):  
Eating Disorders ◽  
Disordered Eating ◽  
Scoping Review ◽  
Elite Athletes ◽  
Adolescent Male ◽  
Wide Range ◽  
High Prevalence ◽  
Sport Type ◽  
High Level

BackgroundEating disorders (ED) and disordered eating (DE) among male elite athletes share some of the characteristics seen in female elite athletes and the population, but also exhibit some key differences.ObjectiveScoping review of ED and DE in male elite athletes.MethodsIn May 2020, a comprehensive systematic literature search was conducted for DE and ED in male elite athletes.ResultsWe identified 80 studies which included 47 uncontrolled, 14 controlled studies, one interventional trial and 18 reviews.DiscussionThere was a wide range of definitions of DE and a high level of heterogeneity regarding competitive level, age and sport type. In adult male elite athletes, ED prevalence rates up to 32.5% were found, higher than in the general population. Prevalence was not higher in young/adolescent male elite athletes. The most frequently associated factor was competing in weight-sensitive sports. Male elite athletes tended to exhibit less body dissatisfaction than controls and were not always associated with DE. There were no studies looking at the prognosis or reporting an evidence-based approach for the management of DE in male elite athletes.ConclusionExisting literature indicates high prevalence of DE and ED in male elite athletes, with a wide range of aetiopathogenesis. There is a need for longitudinal studies to characterise the pathology and long-term outcomes, as well as develop standardised tools for assessment and treatments.

scholarly journals Assessment of Serum Cytokines and Oxidative Stress Markers in Elite Athletes Reveals Unique Profiles Associated With Different Sport Disciplines

2020 ◽  
Vol 11 ◽  
Author(s):  
Muhammad U. Sohail ◽  
Layla Al-Mansoori ◽  
Hend Al-Jaber ◽  
Costas Georgakopoulos ◽  
Francesco Donati ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Elite Athletes ◽  
Oxidative Stress Markers ◽  
Serum Cytokines ◽  
Stress Markers ◽  
And Oxidative Stress
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