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Article ; Online: Prevalence of dietary supplement use among male Brazilian recreational triathletes

Vinnycius Nunes de Oliveira / Marilia Santos Andrade / Rafaella Sinisgalli / Rodrigo Luiz Vancini / Gustavo de Conti Teixeira Costa / Katja Weiss / Beat Knechtle / Claudio Andre Barbosa de Lira

BMC Research Notes, Vol 17, Iss 1, Pp 1-

a cross-sectional study

2024 Volume 6

Abstract: Abstract Background and rationale The literature shows that the prevalence of dietary supplements is high and guidance by a nutritionist or specialized professional is low in professional triathletes. It is reasonable to assume that in recreational ... ...

Abstract	Abstract Background and rationale The literature shows that the prevalence of dietary supplements is high and guidance by a nutritionist or specialized professional is low in professional triathletes. It is reasonable to assume that in recreational triathletes, the prevalence of dietary supplements will also be high and that a significant portion of the sampled population will use supplements without any guidance from a qualified professional. The present study investigated dietary supplement use among Brazilian male recreational triathletes. Methods A total of 724 Brazilian male recreational triathletes (age: 38.00 [10.00] years and body mass index: 24.16 [3.02] kg/m2) took part in this study. All participants answered an online questionnaire containing questions about their demographic characteristics and the nutritional aspects of their diet. Results The results showed that ~ 90% (n = 653) of the interviewed participants reported using at least one dietary supplement. Surprisingly, ~ 25% did not receive supplement advice from a professional nutritionist. Conclusion The prevalence of dietary supplements in male recreational triathletes was high, and a substantial part of the sample did not receive professional recommendations. This situation is worrisome because dietary supplements should be prescribed by a professional nutritionist. Practical implications Our results suggest the need for an appropriate attitude and guidance by health professionals who deal with this population, especially nutritionists, to promote safe practices.
Keywords	Triathlon ; Cycling ; Running ; Swimming ; Nutrition ; Supplements ; Medicine ; R ; Biology (General) ; QH301-705.5 ; Science (General) ; Q1-390
Subject code	910
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	BMC
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The use of the additional field player on handball

Nilva Pessoa de Souza / Lucas Leonardo / Larissa Rafaela Galatti / Gustavo De Conti Teixeira Costa

Revista Internacional de Ciencias del Deporte, Vol 15, Iss 57, Pp 295-

analysis of the Rio 2016 Olympic Games. [El uso del jugador adicional en el balonmano: análisis de los Juegos Olímpicos de Río 2016].

2019 Volume 306

Abstract: This study aims at analyzing the effectiveness of using an additional field player, when goalkeeper is replaced, during the positional attack in the case of numerical equality, superiority or inferiority and when counterattacks are suffered. The sample ... ...

Abstract	This study aims at analyzing the effectiveness of using an additional field player, when goalkeeper is replaced, during the positional attack in the case of numerical equality, superiority or inferiority and when counterattacks are suffered. The sample consisted of 841 attack actions collected from eight games of men’s teams in the knockout phase of the Rio 2016 Olympic Games. The number of goals scored and the counterattacks suffered in symmetrical and asymmetrical situations were checked for both situations: using the additional player or not. Was performed the chi-square test (𝜒2) and the effect power was calculated using Phi (ɸ). The analysis of the attack showed that there was no association between goal-making and the use of the additional field player in different asymmetric situations. There was no association between the reach of the goal in case of opponent’s counterattack substitution of the goalkeeper with the additional field player or not as well as no association between punishment and goal achievement in different offensive situations. The use of an additional field player did not benefit the team in attack actions and brought no disadvantages in the scoreboard. These results show that, in this championship, such strategy did not produce significant changes in decisive games of men’s handball.
Keywords	Handball ; notational analysis ; additional field player ; attack asymmetric ; Geography. Anthropology. Recreation ; G ; Recreation. Leisure ; GV1-1860 ; Sports ; GV557-1198.995
Language	English
Publishing date	2019-07-01T00:00:00Z
Publisher	Ramón Cantó Alcaraz
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Inter e intra-variability of the best ranked teams

Augusto Cezar Rodrigues Rocha / Lorenzo Laporta / Geovana Pires Rodrigues / Juracy da Silva Guimarães / Marcos Henrique do Nascimento / Marcelo Couto Jorge Rodrigues / Thiago José Leonardi / Claudio Andre Barbosa de Lira / Henrique de Oliveira Castro / Gustavo De Conti Teixeira Costa

PLoS ONE, Vol 18, Iss 2, p e

A network analysis in male high-level volleyball.

2023 Volume 0280365

Abstract: The present research objective was to analyze the offensive phase from Complex I in high-level male volleyball teams in a macro- and micro-level view, through the inter e intra-team variability analysis of eight best teams of the 2018 Men's Volleyball ... ...

Abstract	The present research objective was to analyze the offensive phase from Complex I in high-level male volleyball teams in a macro- and micro-level view, through the inter e intra-team variability analysis of eight best teams of the 2018 Men's Volleyball World Championship over the social network analysis and eigenvector centrality. The sample consisted of 22 matches and 2,743 offensive actions, resulting in 8 sub-networks with 368 nodes and 6221 edges. The results showed from macro view the variables that presented highest centrality values were Attack Zone 4 (range 0.56-0.90), Attack Tempo 2 (0.65-0.87), Power Attack (0.62-0.94), No Touch Block (0.61-1), Attack Effect Continuity (0.59-0.94), and Middle Blocker Centralized (0.60-0.95). In a micro view, Reception Effect, Play Position, Reception Zone, and Block Composition showed high variability in each sub-network. The intra- and inter-team variability presented the importance of to respect each team idiosyncrasies and to consider the different approaches to the game and success.
Keywords	Medicine ; R ; Science ; Q
Subject code	796
Language	English
Publishing date	2023-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: EXERCISE SCIENCE IN HIGH SCHOOL BIOLOGY TEXTBOOKS

Ricardo Borges Viana / Susigreicy Pires de Morais / Rodrigo Luiz Vancini / Marília Santos Andrade / Gustavo De Conti Teixeira Costa / Beat Knechtle / Pantelis T. Nikolaidis / Claudio Andre Barbosa de Lira

Revista Brasileira de Medicina do Esporte, Vol 28, Iss 4, Pp 352-

2022 Volume 357

Abstract: ABSTRACT The content of high school textbooks related to physical activity and exercise is of utmost importance because physical activity and exercise are considered important tools in maintaining and improving health. Our objective was to analyze the ... ...

Abstract	ABSTRACT The content of high school textbooks related to physical activity and exercise is of utmost importance because physical activity and exercise are considered important tools in maintaining and improving health. Our objective was to analyze the presence and quality of exercise science content in high school biology textbooks approved by the National Textbook Plan. A guiding document was developed to enable the analysis of the textbooks. The topics investigated were: I) the extent of content related to exercise science; II) misconceptions about exercise science; III) health benefits attributed to exercise. The academic qualifications of the textbook authors were also analyzed. All analyzed textbooks (n = 9) featured some degree of exercise science content. In addition, ~67% of textbooks analyzed had at least one misconception regarding exercise science, the most common being related to biochemistry and muscle physiology. Also, 93.8% of the authors had undergraduate degrees in biological sciences; 43.8% had doctoral degrees. In conclusion, all high school biology textbooks presented content related to exercise science; however, most of them presented at least one misconception regarding exercise science. Thus, we suggest that the Brazilian National Textbook Plan should improve the criteria for analyzing biology textbooks. Level of Evidence III; Economic and decision analyses - Development of an economic or decision model.
Keywords	Physical Activity ; Physical Exercise ; Health Promotion ; Hypertension ; Health Education ; Sports medicine ; RC1200-1245
Subject code	796 ; 070
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	Sociedade Brasileira de Medicina do Esporte
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Market value of Brazilian soccer players that played 2020 series A and B of the Brazilian championship

Lucas Savassi Figueiredo / Lucas de Castro Ribeiro / Henrique de Oliveira Castro / Gustavo De Conti Teixeira Costa / Lucas Morais de Souza Gomes / Fabiano de Souza Fonseca

Motriz: Revista de Educacao Fisica, Vol

an analysis based on quarters of birth and playing position

2022 Volume 28

Abstract: Abstract Aim: The present study aimed to investigate the prevalence of RAE in soccer players from different positions in Series A and B in 2020 Brazilian soccer, as well as the impact of RAE on the estimated market value of these players. Methods: Data ... ...

Abstract	Abstract Aim: The present study aimed to investigate the prevalence of RAE in soccer players from different positions in Series A and B in 2020 Brazilian soccer, as well as the impact of RAE on the estimated market value of these players. Methods: Data from 1080 male elite soccer athletes were analyzed. Athletes were grouped according to birth quarters: Q1 (January-March), Q2 (April-June), Q3 (July-September), and Q4 (October-December) and the competitive level (Series A or B). Chi-square tests (χ2) were performed to compare the birthdates’ distribution of athletes according to a competitive level and playing positions. Kruskal-Wallis test was used to compare the market values of players born in each of the quarters of the year across competitive levels and playing positions. The significance level was set at 5%. Results: The overall analyses showed the prevalence of RAE in Series A and B, with an overrepresentation of athletes born in the first two quarters of the year. The RAE analysis based on playing positions showed different from expected distributions for forwards, midfielders, and defenders in Series A. In Series B, only midfielders showed a difference from the expected distribution. As for the market values analyses, no differences were found based on the athletes’ birth quarters, regardless of competitive level or playing position. Conclusion: Our results indicate that, although RAE is prevalent in Series A and B of elite Brazilian soccer, it does not seem to influence players’ estimated market values.
Keywords	relative age effect ; talent identification ; soccer ; Sports ; GV557-1198.995 ; Sports medicine ; RC1200-1245
Subject code	796
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Universidade Estadual Paulista (UNESP)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Effects of placebo on bench throw performance of Paralympic weightlifting athletes

Gustavo De Conti Teixeira Costa / Luan Galvão / Martim Bottaro / João Felipe Mota / Gustavo Duarte Pimentel / Paulo Gentil

Journal of the International Society of Sports Nutrition, Vol 16, Iss 1, Pp 1-

a pilot study

2019 Volume 6

Abstract: Abstract Background The aim of the present study was to analyse the effects of placebo on bench throw performance in Paralympic weightlifting athletes. Methods The study involved four Paralympic weightlifting male athletes (age: 40.25 ± 9.91 years, ... ...

Abstract	Abstract Background The aim of the present study was to analyse the effects of placebo on bench throw performance in Paralympic weightlifting athletes. Methods The study involved four Paralympic weightlifting male athletes (age: 40.25 ± 9.91 years, weight: 60.5 ± 8.29 kg, height: 1.60 ± 0.15 m) that visited the laboratory in three occasions, separated by 72 h. In the first session, the athletes were tested for bench press one repetition maximum (1RM). The other two sessions were performed in a randomized counter-balanced order and involved bench throw tests performed either after taking placebo while being informed that the capsule contained caffeine or without taking any substance (control). The bench throw tests were performed with loads corresponding to 50, 60, 70 and 80% of the bench press 1RM. Results According to the results, mean velocity (∆: 0.08 m/s, ES 0.36, p < 0.05) and mean propulsive velocity (∆: 0.11 m/s, ES 0.49, p < 0.05) at 50% of 1RM were significantly higher during placebo than control (p < 0.05). However, there were no difference between control and placebo for 60, 70 and 80% of 1RM (p > 0.05). Conclusion Our results suggest that placebo intake, when the athletes were informed they were taking caffeine, might be an efficient strategy to improve the performance of explosive movements in Paralympic weightlifting athletes when using low-loads. This brings the possibility of using placebo in order to increase performance, which might reduce the risks associated with ergogenic aids, such as side-effects and positive doping testing.
Keywords	Nutritional supplements ; Sports performance ; Psyching up ; Nutrition. Foods and food supply ; TX341-641 ; Sports medicine ; RC1200-1245
Subject code	796
Language	English
Publishing date	2019-02-01T00:00:00Z
Publisher	Taylor & Francis Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Relative Age Effect on Brazilian male elite futsal athletes according to playing position and performance by goals scored on Brazil National Futsal Leagues

Henrique de Oliveira Castro / Samuel da Silva Aguiar / Filipe Manuel Clemente / Ricardo Franco Lima / Gustavo De Conti Teixeira Costa / Lucas Savassi Figueiredo / Vivian de Oliveira / Sérgio Adriano Gomes

Motriz: Revista de Educacao Fisica, Vol

2021 Volume 28

Abstract: Abstract Introduction: The relative age effect is prevalent in different elite team sports. However, little is known about this phenomenon in high-level adult male futsal players. Aim: The present study aimed to investigate the prevalence of relative age ...

Abstract	Abstract Introduction: The relative age effect is prevalent in different elite team sports. However, little is known about this phenomenon in high-level adult male futsal players. Aim: The present study aimed to investigate the prevalence of relative age effect in Brazilian male elite futsal players, and its relationship with playing position and goals scored on Brazil National Futsal Leagues (BNFL) from 2016 to 2020. Methods: The distribution of birth dates, playing positions, and goals scored by male participants of the Brazil National Futsal Leagues were analyzed. Chi-squared tests were used to analyze the birth dates distribution based on quarters and semesters of the year, according to playing position (defender, winger, pivot, and goalkeeper) and scoring performance (high and low). Results: The overall analysis indicated that the relative age effect is prevalent on the pool of athletes analyzed. However, this effect was position-dependent, since relatively older athletes were overrepresented only in wingers and defenders playing positions. On the other hand, scoring performance was not associated with the relative age effect, since this effect was found in both performance levels. Conclusion: Relative age effects are prevalent in Brazilian male elite futsal athletes, especially for defenders and wingers. Considering the high level of competitiveness for spots in elite futsal teams, coaches and sports administrators must be educated about the prevalence of the relative age effect in this sporting context. This is necessary in order to reduce the inequalities generated by age categories based on arbitrary cut-off dates, which may reduce potential talent loss.
Keywords	RAE ; futsal ; birth-date ; birth effect ; talent selection ; Sports ; GV557-1198.995 ; Sports medicine ; RC1200-1245
Subject code	796
Language	English
Publishing date	2021-11-01T00:00:00Z
Publisher	Universidade Estadual Paulista (UNESP)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: High intensity interval training (HIIT) as a viable alternative to induce the prevention of respiratory diseases

Carolina Cavalcante de Paula / Sergio Machado / Gustavo De Conti Teixeira Costa / Marcelo Magalhães Sales / Thiago Gottgtroy Miranda / Silvio Roberto Barsanulfo / Eric Murillo-Rodriguez / Henning Budde / Alberto Souza Sá Filho

Research, Society and Development, Vol 9, Iss

a point of view of exercise immunology during COVID-19 outbreak

2020 Volume 10

Abstract: The immune system's response against SARS-Cov-2 seems crucial to control viral infection, since this system is homeostatic, dynamic and promotes immunoprotection of the organism through the activation of the innate and adaptive immune system via ... ...

Abstract	The immune system's response against SARS-Cov-2 seems crucial to control viral infection, since this system is homeostatic, dynamic and promotes immunoprotection of the organism through the activation of the innate and adaptive immune system via activation of cellular and chemical complexes that recognize, neutralize, metabolize and eliminate heterologous substances, with or without tissue damage. An obesogenic microenvironment can further increase the risk of disease complications, and cause a more virulent viral strain and a more lethal virus. Moreover, physical inactivity as well as poor eating habits impairs the body's energy metabolism and immune cells due to low-grade chronic inflammation. Studies suggest that light to moderate exercise, as well as mild calorie restriction, as an effective approach to relieve obesity and therefore an interesting strategy to strengthen the immune response during the outbreak of COVID-19, while a vaccine is not developed. Some studies have been shown significant findings in favor of High intensity interval training (HIIT) protocols when compared to moderate intensity exercise, showing how immunological system responds to vigorous to high intensity training. However, HIIT has a lower cost of time, reducing the time/efficiency ratio, that is, a lower cost of time with similar or even better benefits to higher volume exercise programs. Let us not forget: "time is the most precious asset we have".
Keywords	Immune Complex ; Exercise ; Severe acute respiratory syndrome related coronavirus ; High-Intensity Intermittent Exercise ; Special aspects of education ; LC8-6691 ; Science (General) ; Q1-390 ; Social Sciences ; H
Subject code	796
Language	English
Publishing date	2020-10-01T00:00:00Z
Publisher	Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Effects of match period and playing position on the individual and collective dynamics in professional soccer

Gibson Moreira Praça / André Gustavo Pereira de Andrade / Sarah da Glória Teles Bredt / Pedro Emilio Drumond Moreira / Gustavo De Conti Teixeira Costa / Henrique de Oliveira Castro / Rodrigo Aquino

Revista Brasileira de Cineantropometria e Desempenho Humano, Vol

a case study

2020 Volume 22

Abstract: This study aimed to compare the width, the length, the length per width ratio, and the stretch index between the first and the second halves in official soccer matches, and to compare the spatial exploration index between players from different positions. ...

Abstract	This study aimed to compare the width, the length, the length per width ratio, and the stretch index between the first and the second halves in official soccer matches, and to compare the spatial exploration index between players from different positions. Seventeen professional soccer players from a Brazilian club participated in the study and were monitored during six official matches by a GPS device. Collective positional data were compared between the two halves using a paired t-test, while the spatial exploration index was compared between the playing positions and within the halves by a mixed two-way ANOVA. The results revealed no differences between the two halves for the collective variables. The highest values of spatial exploration index were reported for central midfielders and wing forwards. We conclude that the tactical behavior of professional soccer players is position-dependent, and midfielders are the most exploratory players on the pitch.
Keywords	Exercise ; Soccer ; Sports ; GV557-1198.995 ; Medicine (General) ; R5-920
Subject code	796
Language	English
Publishing date	2020-11-01T00:00:00Z
Publisher	Universidade Federal de Santa Catarina
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Analysis of the small-sided games in volleyball

Augusto Cézar Rodrigues Rocha / Henrque de Oliveira Castro / Auro Barreiros Freire / Bárbara Costa Faria / Gustavo Palhares Mitre / Fabiano de Souza Fonseca / Cláudio Olívio Vilela Lima / Gustavo De Conti Teixeira Costa

Revista Brasileira de Cineantropometria e Desempenho Humano, Vol

an ecological approach

2020 Volume 22

Abstract: The aim of the present study was to compare the tactical and technical behavior of beginner players in volleyball side-out between four distinct situations of reduced games with different area/player ratios: 4.5 m2 (3.0 m x 3.0 m), 8.0 m2 (4.0 m x 4.0 m), ...

Abstract	The aim of the present study was to compare the tactical and technical behavior of beginner players in volleyball side-out between four distinct situations of reduced games with different area/player ratios: 4.5 m2 (3.0 m x 3.0 m), 8.0 m2 (4.0 m x 4.0 m), 10.58 m2 (4.6 m x 4.6 m), and 13.52 m2 (5.2 m x 5.2 m). We analyzed 76 games played by 16 players with a mean age of 12.2 ± 0.5 years and experience of 1.2 ± 0.8 years of practice. Tactical and technical behavior was analyzed using an adaptation of the Game Performance Analysis Instrument (GPAI). The analysis was conducted for passing, setting and attacking according to the components related to technical adjustment, technical efficiency and decision-making. The results showed that players presented higher technical and tactical indexes in the passing and setting skills in 4.6 m x 4.6 m and 5.2 m x 5.2 m situations. Also, in the 3.0 m x 3.0 m situation higher technical indexes were found for the attacking. No differences were found in the tactical behavior of attacking for tested situations. We conclude that the environmental constraints imposed by the small-sided games imply distinct technical and technical behaviors. Thus, the pedagogical strategy of using small-sided games for the teaching of volleyball for beginner players must be associated with the intended objectives for each basic volleyball skills.
Keywords	Decision-making ; Efficiency ; Efficacy ; Sport ; Sports ; GV557-1198.995 ; Medicine (General) ; R5-920
Subject code	796
Language	English
Publishing date	2020-11-01T00:00:00Z
Publisher	Universidade Federal de Santa Catarina
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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