Multiple Effects of Caffeine on Simulated High-Intensity Team-Sport Performance

2005 ◽  
Vol 37 (11) ◽  
pp. 1998-2005 ◽  
Author(s):  
GENE R. STUART ◽  
WILL G. HOPKINS ◽  
CHRISTIAN COOK ◽  
SIMEON P. CAIRNS
Keyword(s):  
High Intensity ◽  
Team Sport ◽  
Sport Performance

scholarly journals Perfectionism Patterns, Dark Personality, and Exercise Addiction Trend in High-Intensity Sports

2021 ◽  
Author(s):  
J. González-Hernández ◽  
R. Baños ◽  
R. Morquecho-Sánchez ◽  
H. A. Pineda-Espejel ◽  
J. L. Chamorro
Keyword(s):  
High Intensity ◽  
Sport Performance ◽  
Dark Triad ◽  
Cognitive Resources ◽  
Amateur Athletes ◽  
Exercise Addiction ◽  
The Subject ◽  
Exercise Addiction Inventory ◽  
Concern Over Mistakes ◽  
Evaluative Judgement

AbstractThe present work tries to describe the relationships among perfectionism, dark traits of personality, and exercise addiction and according to highly intense sports. Following research on perfectionism in sport, its dysfunctional facet is based on a continuous and negative cognitive-evaluative judgement about the difficulties to achieve the accomplishment of tasks or behaviors that improve their sport performance, describing how athletes configure altered thoughts or cognitive resources in their sport experiences. The Spanish versions of the Multidimensional Perfectionism Scale, the Short Dark Triad Scale, and the Exercise Addiction Inventory were applied in a sample of 462 Spanish amateur athletes (39.6% women and 60.4% men). The findings show that a more maladaptive perfectionist pattern (concern over mistakes and external criticism) is related to higher levels of dark personality traits and a greater risk of exercise addiction. However, there are no differences between runners and CrossFit users on the subject of perfectionism, dark traits, and exercise addiction scores.

“Live High–Train Low and High” Hypoxic Training Improves Team-Sport Performance

2015 ◽  
Vol 47 (10) ◽  
pp. 2140-2149 ◽  
Author(s):  
FRANCK BROCHERIE ◽  
GRÉGOIRE P. MILLET ◽  
ANNA HAUSER ◽  
THOMAS STEINER ◽  
JULIEN RYSMAN ◽  
...  
Keyword(s):  
Team Sport ◽  
Sport Performance ◽  
Hypoxic Training

scholarly journals The Effect of Tribulus Terrestris Supplementation on Inflammation, Oxidative Stress and Performance of Recreational Runners: Study Protocol for a Double-Blind Randomized Controlled Trial

2021 ◽  
Author(s):  
Marzieh Nejati ◽  
Parvin Dehghan ◽  
Mostapha Khani
Keyword(s):  
Oxidative Stress ◽  
High Intensity ◽  
Controlled Trial ◽  
Sport Performance ◽  
Tribulus Terrestris ◽  
Double Blind ◽  
Inflammatory Status ◽  
Recreational Runners ◽  
Anti Inflammatory ◽  
Exercise Induced

Abstract Background: High intensity and endurance exercises lead to exercise-induced oxidative stress (EIOS), exercise-induced muscle damage (EIMD), and inflammation, which are the influencing factors on muscle soreness, localized swelling, and sport performance. Therefore, the purpose of this study is to determine the effectiveness of Tribulus terrestris (TT) as an herbal supplement with antioxidant and anti-inflammatory properties on the nutritional, oxidative stress, and anti/inflammatory status, as well as the sport performance of recreational runners.Methods/design: This study is a double-blind, randomized, placebo-controlled trial, which will be conducted among recreational runners of Tabriz stadiums, Iran. Thirty-four recreational runners will be selected, and participants will be assigned randomly to two groups: to receive 500 mg TT supplement or placebo capsules twice daily for two weeks. Both groups will do the high-intensity interval training (HIIT) workouts during the study. Baseline and post-intervention body composition, muscle fatigue, and soreness parameters will be assessed. In addition, assessment of malondialdehyde (MDA), total antioxidant capacity (TAC), superoxide dismutase (SOD), high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), interleukin-10 (IL-10), creatine kinase (CK), lactate dehydrogenase (LDH), insulin-like growth factor-1 (IGF-1) and brain-derived neurotrophic factor (BDNF) will be done during three blood samplings.Discussion: This study will be the first to assess the potential effects of TT in recreational runners. Our results will contribute to the growing body of knowledge regarding TT supplementation on the nutritional, oxidative stress, anti/inflammatory status and sport performance in recreational runners.Trial registration: Iranian Registry of Clinical Trials (www.irct.ir) (ID: IRCT20150205020965N8). Registration date: 13 February 2021.

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

The Effects of Compression Garments on Intermittent Exercise Performance and Recovery on Consecutive Days

2008 ◽  
Vol 3 (4) ◽  
pp. 454-468 ◽  
Author(s):  
Rob Duffield ◽  
Johann Edge ◽  
Robert Merrells ◽  
Emma Hawke ◽  
Matt Barnes ◽  
...  
Keyword(s):  
Heart Rate ◽  
Exercise Performance ◽  
High Intensity ◽  
Peak Power ◽  
Muscle Soreness ◽  
Sport Activity ◽  
Team Sport ◽  
Tympanic Temperature ◽  
Exercise Protocol ◽  
Compression Garments

Purpose:The aim of this study was to determine whether compression garments improve intermittent-sprint performance and aid performance or self-reported recovery from high-intensity efforts on consecutive days.Methods:Following familiarization, 14 male rugby players performed two randomized testing conditions (with or without garments) involving consecutive days of a simulated team sport exercise protocol, separated by 24 h of recovery within each condition and 2 weeks between conditions. Each day involved an 80-min high-intensity exercise circuit, with exercise performance determined by repeated 20-m sprints and peak power on a cart dynamometer (single-man scrum machine). Measures of nude mass, heart rate, skin and tympanic temperature, and blood lactate (La−) were recorded throughout each day; also, creatine kinase (CK) and muscle soreness were recorded each day and 48 h following exercise.Results:No differences (P = .20 to 0.40) were present between conditions on either day of the exercise protocol for repeated 20-m sprint efforts or peak power on a cart dynamometer. Heart rate, tympanic temperature, and body mass did not significantly differ between conditions; however, skin temperature was higher under the compression garments. Although no differences (P = .50) in La− or CK were present, participants felt reduced levels of perceived muscle soreness in the ensuing 48 h postexercise when wearing the garments (2.5 ± 1.7 vs 3.5 ± 2.1 for garment and control; P = .01).Conclusions:The use of compression garments did not improve or hamper simulated team-sport activity on consecutive days. Despite benefits of reduced self-reported muscle soreness when wearing garments during and following exercise each day, no improvements in performance or recovery were apparent.

THE EMOTION OF JOY IN SOCIAL NETWORKS: VERBAL, PARAVERBAL AND NONVERBAL FORMS OF EXPRESSION

2021 ◽  
Author(s):  
A.V. Kolmogorova ◽  
S.R. Akhmadeeva
Keyword(s):  
Social Networks ◽  
Comparative Analysis ◽  
Team Sport ◽  
Sport Performance ◽  
Emotion Expression ◽  
The Internet ◽  
Text Data ◽  
Gender Factor

The article explores the text data of the Internet-comments published on social networks by fans to celebrate the victory of their favorite sportsmen. The aim of the publication is to analyze verbal, paraverbal and nonverbal forms of emotion expression in two groups of fans: those who are keen on sports profiling typically masculine properties (strength, audacity, endurance), and, on the contrary, those who are passionate about the sport performance featuring feminine characteristics (grace, beauty, flexibility). The conducted comparative analysis gives evidence about the presence of a number of specific features due to the effect of gender factor. However, this factor largely correlates with other variables, such as linguacultural patterns, the nature of the sport itself (team sport vs individual sport).

Global brands in sports: identifying low-risk business opportunities

2019 ◽  
Vol 8 (1) ◽  
pp. 62-83
Author(s):  
Alice Aguiar-Noury ◽  
Pedro Garcia-del-Barrio
Keyword(s):  
Fixed Effects ◽  
Team Sport ◽  
Sport Performance ◽  
Low Risk ◽  
Google Trends ◽  
Content Type ◽  
Sports Industry ◽  
Global Brands ◽  
Business Opportunities ◽  
The Usa

Purpose The purpose of this paper is to accomplish several goals. First, it studies the relevance of the sports sector as part of the entertainment industry. Second, it identifies promising markets within the sports industry, paying special attention to the relative importance of soccer in the context of team-sport leagues. Finally, the paper helps entrepreneurs to recognized market opportunities in the sports industry by identifying the soccer clubs that were found to be low-risk global brands. Design/methodology/approach To evaluate the relevance of the entertainment and sports industries, both in the USA and EU-28, the authors rely on their respective contribution to the domestic product and to employment. Two procedures are proposed for establishing the status of global sport leagues: one is based on the annual revenues and the other on the degree of interest that the public shows for each professional sport league. (The latter is performed by comparing the intensity with which internet users search for contents related to each of the Top-10 sports leagues worldwide.) Finally, by estimating the fixed effects of a model in which sport performance is filtered out, we calculate the expected low-risk revenues that clubs generate due to their heterogeneous brand value. Findings This paper reaches some few relevant results. First, we find that the greater employment opportunities in the European sport industry are concentrated in the UK, Spain, France and Germany, which may orientate entrepreneurs to start projects in promising sport markets. Then, data on annual revenues is used to rank the main team-sport leagues worldwide: NFL, MLB, NBA, Premier League and NHL. Another rank is based on the degree of interest of fans (as captured by Google Trends) yields a different result, where the NFL, NBA and the UEFA Champions League are, respectively, at command. Besides, the paper also ranks clubs as valuable assets by identifying which of them are low-risk soccer brands. The empirical study provides insights to select business opportunities by targeting the less-risky clubs or leagues, by calculating the expected annual revenues of clubs regardless of their recent sports performances. Originality/value This paper is innovative in two ways. First, it develops an analysis based on Google Trends to establish the comparative status of team-sport leagues worldwide. Second, by adopting an original empirical approach, it identifies markets and brands to carry out low-risk entrepreneurial projects. The expected potential revenues derived from this procedure are not contingent to the risk due to poor sport achievements in a particular season. To our knowledge, researchers have not computed in the past such calculations as that we name here low-risk revenues.

Effect of External Counterpulsation on Exercise Recovery in Team Sport Athletes

2019 ◽  
Vol 40 (08) ◽  
pp. 511-518 ◽  
Author(s):  
Ruben Collins ◽  
Denise McGrath ◽  
Katy Horner ◽  
Silvia Eusebi ◽  
Massimiliano Ditroilo
Keyword(s):  
Creatine Kinase ◽  
High Intensity ◽  
Muscle Soreness ◽  
Immunoglobulin A ◽  
Team Sport ◽  
Neuromuscular Function ◽  
High Intensity Exercise ◽  
Alpha Amylase ◽  
External Counterpulsation ◽  
Main Effects

AbstractExternal counterpulsation (ECP), an electrocardiogram-led sequential compression of lower limbs, has been recently proposed for sports recovery, but research is scant. This study examined the effects of an ECP session upon neuromuscular function (vertical jump and torque/velocity characteristics), biochemical responses (creatine kinase, cortisol, testosterone, alpha-amylase and immunoglobulin-A), and muscle soreness (visual analogue scale) following high-intensity exercise. Twenty-one male team sport athletes (age: 21.6±3.4 yrs; height: 182.7±7.3 cm; body mass: 82.7±9.3 kg) recovered from the fatiguing exercise using either ECP or rest. Data collection was conducted at three separate time points: upon arrival (Pre), post-recovery (Post), and 24 h post-recovery (24hPost). Significant main effects for time were observed for increased torque/velocity slope and for decreased isometric extension peak torque (p<0.001). Significant main effects for time were observed for increased creatine kinase, testosterone, alpha-amylase, and muscle soreness (all p<0.001). Significant interaction effects were observed at post-testing following ECP: Cortisol release and the related decline in testosterone/cortisol ratio were attenuated, and immunoglobulin-A was increased following ECP in comparison to the control (all p<0.05). Following high-intensity exercise, ECP has potentially beneficial effects upon biomarkers of recovery, without affecting the neuromuscular function.

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