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Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte is the property of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

El estudio tuvo como objetivo analizar el impacto de los ejercicios pliométricos en la optimización de la fuerza explosiva de los jugadores reserva de la Liga de Portoviejo. El problema identificado fue la falta de un programa de entrenamiento estructurado para desarrollar la fuerza explosiva, lo cual es esencial para mejorar el desempeño en el fútbol. La metodología fue de enfoque cuantitativo y experimental, utilizando pruebas estandarizadas de salto vertical, salto horizontal y velocidad de 50 metros. Se seleccionó una muestra de 20 jugadores, de entre 18 y 20 años, quienes realizaron estas pruebas antes y después de un programa de entrenamiento pliométrico. Los resultados revelaron que, tras la intervención, la distancia promedio en el salto horizontal aumentó de 1.90 metros a 2.03 metros, mejorando de la clasificación de “malo” a “normal” en la mayoría de los jugadores. En el salto vertical, el promedio pasó de 38.40 cm, clasificado como “pobre”, a 43.80 cm, alcanzando la categoría de “debajo de la media”. Además, en las pruebas de velocidad, el tiempo promedio mejoró de 7.79 segundos a 7.22 segundos, logrando que varios jugadores alcanzaran la clasificación de “normal” y uno incluso se posicionara como “muy bueno”. En conclusión, los ejercicios pliométricos resultaron ser efectivos para mejorar la fuerza explosiva y la velocidad de los jugadores, evidenciando un impacto positivo en su rendimiento físico. Sin embargo, algunos jugadores permanecieron en categorías más bajas, lo que sugiere la necesidad de realizar ajustes personalizados en el entrenamiento para maximizar los resultados individuales.

Copyright of Sportis: Scientific Journal of School Sport, Physical Education & Psychomotricity is the property of Sportis: Scientific Journal of School Sport, Physical Education & Psychomotricity and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte is the property of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte is the property of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cultura, Ciencia y Deporte is the property of Cultura, Ciencia y Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A prática profissional do futebol feminino no Brasil vem se expandindo. Essa expansão incentivou a surgimento de categorias de base nas equipes. Com isso, investigar a diferença entre o perfil das jogadoras profissionais e das categorias de base se torna importante para realizar uma melhor transição entre as categorias. Assim, o objetivo do estudo foi comparar o perfil antropométrico e o desempenho físico de jogadoras da categoria sub-20 e profissional do futebol feminino. Para isso, foi realizada a avaliação antropométrica de 19 jogadoras de futebol da categoria sub-20 (17,9 ± 0,81 anos) e 20 jogadoras profissionais (24,4 ± 6,46 anos) de uma equipe de elite do Brasil. Além disso, o desempenho físico foi avaliado pelos testes countermovement jump (CMJ), sprints de 10 metros e 30 metros. Apenas os desempenhos no CMJ e sprint de 30 metros foram diferentes significativamente entre os grupos. A altura no CMJ foi menor nas jogadoras da categoria sub-20 (25,60 ±3,51 cm) em relação as profissionais (31,30 ± 2,64 cm) (p

Copyright of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte is the property of Revista Iberoamericana de Ciencias de la Actividad Física y el Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of the article is to determine the differences in morphological characteristics and jumping abilities between female volleyball players who play for different national teams. The sample consists of 48 elite female volleyball players from four different national teams which participated in European championship qualifications. The variables studied were: body height, mass, body mass index, standing reach and spike reach. The results show differences in body mass index, standing reach and spike reach. These differences are related to the needs of the different positions with regard to the actions they execute. In conclusion morphological parameters are important components of performance in many sports (volleyball). Different sports disciplines require different body parameters and body structure for maximum performance. [ABSTRACT FROM AUTHOR]

Copyright of Revista Brasileira de Prescrição e Fisiologia do Exercício is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introdução: Potencialização pós ativação (PPA) é um fenômeno utilizado no treinamento para melhorar o desempenho de exercícios pliométricos como saltos e sprints, através do prévio estímulo oferecido por uma atividade condicionante com gesto biomecânico similar. Objetivo: Comparar o efeito da duração de diferentes intervalos da PPA sobre o desempenho no salto vertical. Métodos: Estudo experimental, do qual participaram 12 indivíduos treinados do sexo masculino, após sessão de teste de carga de seis repetições máximas no agachamento, realizaram três protocolos experimentais de maneira randomizada e com 48h de intervalo entre as sessões. Todos fizeram aquecimento padrão, realizaram 6 repetições máximas no exercício agachamento e, então, realizaram um dos três intervalos (dois (P2), quatro (P4) e oito (P8) minutos), para assim executarem o salto vertical. Após teste de normalidade de Shapiro-Wilk (p

Copyright of Revista Brasileira de Prescrição e Fisiologia do Exercício is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Bioimpedance provides phase angle data, and it is used to monitor athletes. Muscle strength and power are important physiological/motor characteristics in sports that involve intense movement. The aim of this study was to verify the relationships between body composition, phase angle and upper/lower limb strength in adolescent athletes from different sports. The sample consisted of 473 athletes (Male: 285 and Female: 188), with a mean age of 16.4+1.2 years. The adopted statistic was Principal Component Analysis, with analysis groups formed as General, Male and Female. The Kaiser-Meyer-Olkin and Bartlett's (p<0.01) tests showed good results to follow Principal Component Analysis. The total variance showed that the formation of components was three for General, four for Male and five for Female, where the variance explained by the Principal Component Analysis in each group was 73.9%, 78.7% and 83.1%, respectively. The phase angle is a relatively new variable when evaluating in the sports context, it proved to be important in monitoring the physical condition of adolescent athletes, where in activities that are requested, a more advantageous muscle condition is presented when muscle mass is increased, where in addition to having a good relationship with strength, and it is also related to the variables of body composition and Bioimpedance. [ABSTRACT FROM AUTHOR]

Introduction: Both mood and self-efficacy seem to be components closely related to the athlete's performance. In athletics, to have an exhaustive control of training from the physical and mental point of view is to lay the foundations for sporting success. Exercises such as the vertical jump are an excellent element of control of athletic performance. However, their relationship with psychological aspects during training has been little reported in the literature. Our objective was to analyze the relationship between the mood profile and self-efficacy during vertical jumps in youth athletes of the Cuban national preselection of athletics. Method: Mood and self-efficacy were evaluated before executing a countermovement jump (CMJ), presenting the 40-cm value as the element of maximum success in elite athletes. Results: A significant correlation was found between anxiogenic mood and vertical jump variables. In addition, a negative correlation was found between self-efficacy and anxiety, although not significant (p > .05). Conclusions: Athletes with a medium anxiety score mood although not overelevated (score 2 out of 4) before the execution of vertical jumps obtained better CMJ results, achieving higher performance in both jump height, speed, strength and power of the jump. However, no significant correlations were found between self-efficacy and mood, nor with the jumping variables. [ABSTRACT FROM AUTHOR]

A bioimpedância fornece dados do ângulo de fase, sendo utilizado para monitorar atletas. A força e a potência musculares são características fisiológicas/motoras importantes nos esportes que envolvem movimentos intensos. O objetivo deste estudo foi verificar relações entre a composição corporal, o ângulo de fase e a força de membros superiores/inferiores em atletas adolescentes de diferentes esportes. A amostra foi constituída por 473 atletas (Masculino: 285 e Feminino: 188), com idade média de 16,4+1,2 anos. A estatística adotada foi Análise das Componentes Principais, com grupos de análise formados como Geral, Masculino e Feminino. Os testes de Kaiser-Meyer-Olkin e Bartlett´s (p

The jumping capacity in volleyball is closely linked to the force-speed capacity that players must possess to perform a wide number of jumps during a match. Hence, there are several questions of coaches to get their athletes to reach the top of the elite. The objective of the study presented is to analyze the indicators that influence the vertical jump with countermovement, for the improvement of physical preparation in volleyball player's first category of Havana, to be able to give treatment from the training session. For the acquisition of the data, a strength platform of German origin and the TEMPLO software with its respective Performance Analysis model were used. In this same order, descriptive statistics was applied to the data obtained, and the results are presented through graphs and tables, where the deficiencies in terms of jumping capacity for these players are shown, evidencing the lack of expertise in the transfer from the eccentric phase to the concentric and its result in the success of the game.

Copyright of Revista Andaluza de Medicina del Deporte is the property of Centro Andaluza de Medicina del Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

O futsal evoluiu muito nos últimos anos e se tornou um esporte dinâmico, pelo fato de seus praticantes exercerem múltiplas funções durante treinos e jogos, exigindo assim, um alto ní­vel de condicionamento fí­sico e de potência muscular. Além de ser um esporte intermitente, é caracterizado pela sucessão de diversos movimentos em alta velocidade num espaço curto. Com isso, os praticantes de alta performance necessitam aprimorar algumas valências fí­sicas, entre elas: velocidade, aceleração, agilidade e potência muscular. Sendo assim, o objetivo do estudo é investigar se há correlação entre os saltos vertical e horizontal, com a velocidade, aceleração e agilidade em atletas de futsal. Participaram do estudo 18 jovens atletas de futsal, com idade média de 17,4 ± 0,51 anos, todos de ní­vel estadual, no qual foram submetidos a cinco testes realizados em dois dias com intervalo de no mí­nimo 24h. Foram realizados os testes de aceleração (AC), velocidade (VE), agilidade (AG) e potência de membros inferiores, medido indiretamente através do salto vertical (SV) e salto horizontal (SH). De acordo com os resultados, o desempenho no teste de SV apresentou correlação moderada com o teste de VE (r= -0,46) e com o teste de AG (r= -0,44). Sendo assim, para a amostra estudada o SV pode ser uma alternativa de grande valia para a predição do desempenho de VE e AG.

Introdução e objetivos – A contração muscular do quadricípete, isquiotibiais e rotadores externos apresenta um papel crucial no controlo da estabilidade articular dinâmica, nomeadamente no valgo de joelho no plano frontal. O objetivo deste estudo foi descrever a existência de relação entre a ativação muscular (medida pela recolha eletromiográfica do reto anterior, dos isquiotibiais e do grande glúteo) e a variação da angulação do joelho durante a fase de apoio do salto vertical no plano frontal (medida pela análise cinemática de vídeo) através de um estudo-piloto. Metodologia – Trata-se de um estudo descritivo correlacional com uma amostra de 220 saltos verticais (110 saltos correspondentes a cada um dos membros inferiores) realizados por 4 executantes (dois do género feminino e dois do género masculino com idade média de 28 anos ± 6,4). Resultados – Verificou-se a existência de correlações significativas entre a ativação muscular do reto anterior na fase descendente do salto à direita e à esquerda e a tendência para um menor ou maior ângulo de valgo, respetivamente. O género influencia a dinâmica do joelho, verificando-se que as mulheres apresentam estratégias de ativação diferentes dos homens. Conclusão – A diminuição da ativação muscular da anca parece influenciar os movimentos dinâmicos do joelho no plano frontal, enquadrando-se nos resultados obtidos por outros autores. O material utilizado na recolha de dados, o sincronismo entre o trigger e o vídeo e o número reduzido de executantes que realizaram a amostra poderão constituir limitações ao estudo que se deverão considerar na realização de estudos futuros.

The aim of this work is to analyze the relationship between the eccentric-concentric phase and the reactive strength index in the vertical jump with countermovement of the first category volleyball team in Havana. For this purpose, reference is made to the meaning of the different components of muscular contraction in sports activity, as well as other types of muscular contractions for dynamic work. The methods used were theoretical and empirical, such as historical-logical, inductive-deductive, analysis-synthesis, documentary review, measurement and mathematical-statistical; the latter for the tabulation and arrival of results. McCall's scoring method was used to determine the evaluation of the selected indicators, where the values observed above the mean are taken into account, which have positive standard scores, while the values below the mean have negative standard scores. A comparison is made with other research, exceeding in the case of males by 0.8 cm. With respect to the Cuban average, there is a difference of 0.7 cm. with respect to the Spanish average of 0.13 cm. and when analyzing the international reference, the difference is between 8 and 13 cm. The information achieved facilitated the correct planning and its intensification in the loads with weights in the zone of maximum, fast and explosive strength for the increase of the vertical jump in volleyball athletes, reflected in the competitive result of the team.

Copyright of PODIUM- Revista de Ciencia y Tecnologia en la Cultura Física is the property of Universidad de Pinar del Rio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Sport & Health Research is the property of Journal of Sport & Health Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

O futsal é o esporte de quadra mais praticado no Brasil, suas principais ações são expressas por atividades motoras envolvendo alta intensidade e curta duração (correr, saltar, chutar e etc.) com ênfase principalmente nas capacidades físicas força e velocidade. Ambas as capacidades são importantes para o melhor desempenho desses movimentos, diante disto, a avaliação destas é fundamental para nortear o treinamento dos atletas. Objetivo: Correlacionar o desempenho de saltos verticais e sprints em jogadores de futsal da categoria sub-11. Materiais e Métodos: A amostra foi composta por 17 jogadores de futsal da categoria sub 11, os quais foram submetidos à anamnese, avaliação da composição corporal e testes de salto agachado (SA) e salto com contramovimento (SCM) e sprints em linha reta (SLR) e sprint com mudança de direção (SMD). A normalidade dos dados foi verificada pelo teste de Shapiro-Wilk. Para análise das correlações foi utilizado o teste de correlação de Pearson. Resultados: Foi encontrada correlação alta, significativa e negativa entre SA e os SLR 0-10m (r= -0,69) e SMD 12,5-25m (r= -0,60), e entre o SCM e os SLR 0-10m (r= -0,75), SLR 0-20m (r= -0,58) e SMD12,5-25m (r= -0,57). Conclusão: A correlação encontrada foi alta, negativa e significativa entre o SV e Sprints em jogadores de futsal da categoria sub 11 indicando que as tarefas apresentam fatores em comum e que o treinamento de força, por meio dos SV, parece ser efetivo no desempenho da velocidade.

Introdução e objetivo: O treinamento pliométrico é uma das melhores maneiras de melhorar a potência muscular, particularmente dos membros inferiores. Parece não haver maiores benefícios na adição de peso durante sua realização, entretanto recomenda-se que, quando esse for o caso, se dê preferência a cargas leves. Nos anos 90 começaram a surgir estudos que sugeriram o caminho inverso, reduzindo o peso corporal ao invés de aumentá-lo, com o uso de cordas elásticas. O objetivo desse estudo foi comparar tempo de contato, tempo de voo e índice de força reativa (IFR) nos saltos verticais assistidos e não assistidos por cordas elásticas em especialistas em provas de potência do atletismo. Métodos: Doze atletas de nível internacional, seis homens e seis mulheres, com idade entre 18-28 anos, realizaram medidas de massa corporal, estatura, índice de massa corporal (IMC) e um teste de dois saltos verticais consecutivos com o auxílio de movimentos dos braços, em duas condições: com e sem a assistência de cordas elásticas. A redução do peso corporal na condição assistida foi de aproximadamente 12kg, ou 15-20% da massa corporal. Para a comparação das variáveis foi utilizado o teste t de Student, adotando-se nível de significância de p ≤ 0,05. O coeficiente d de Cohen foi utilizado para determinar o tamanho do efeito (Effect Size). Resultados: Tempo de voo e altura do salto aumentaram na condição facilitada em ambos os sexos, sem que houvesse interferências negativas sobre o tempo de contato. Conclusão: O IFR teve a tendência de aumento com a assistência das cordas elásticas, e a especificidade do treinamento foi mantida. Recomenda-se a inclusão desse meio na preparação de atletas especialistas em provas de potência do atletismo.

Aedo-Muñoz, E., Tamayo Contreras, V., Rojas Reyes, C., Hernández Wimmer, C., Brito, C., Miarka, B., Arghoty Bucheli, R., Dal Bello, F y Herrera Valenzuela, T. (2020). Potencia y actividad electromiográfica en voleibolistas universitarios. PENSAR EN MOVIMIENTO: Revista de Ciencias del Ejercicio y la Salud, 18(1), 1-14. El propósito del estudio fue determinar la potencia relativa del miembro inferior y actividad electromiográfica de superficie (EMGs) del glúteo mayor (GM), vasto medial (VM), vasto lateral (VL) y gastrocnemio lateral (GASLAT), durante un salto contramovimiento (CMJ) y un salto Abalakov (ABK). Un total de 24 voleibolistas universitarios se dividieron en dos grupos iguales asignados por el nivel de competencia: el grupo 1 (G1), compuesto por voleibolistas de 1ª división universitaria y el grupo 2 (G2), compuesto por voleibolistas de 2ª división universitaria. Cada uno fue sometido a dos evaluaciones simultáneas de potencia y EMGs. Para la potencia se utilizó un sistema de grabación en 2D, por medio de un seguimiento del trocánter mayor con una cámara de 250 fps. Esta grabación se sometió a una medición por medio de software (Tracker), para obtener los valores de potencia absoluta. La EMGs se realizó por medio de un electromiógrafo Delsys Trigno en los músculos GM, VM, VL y GASLAT. Se presentaron diferencias significativas en %PeakRMS del VL (G1=65.210.2; G2=54.0±11.7 %PeakRMS; p0.05) y ABK (p>0.05).

Ulloa Sánchez, P. y Hernández Elizondo, J. (2020). El efecto agudo del entrenamiento en trampolín sobre la estabilidad, la altura de salto y la velocidad de carrera en 20 metros de porristas. PENSAR EN MOVIMIENTO: Revista de Ciencias del Ejercicio y la Salud, 18(1), 1-18. El principal objetivo del estudio es analizar el efecto agudo del entrenamiento en trampolín (ET) sobre la estabilidad, altura de salto y velocidad de carrera en 20 m de porristas. Se reclutaron 53 sujetos (18 hombres y 35 mujeres), que pertenecen al programa de porrismo Pura Vida Athletics(Tibás, Costa Rica). Se conformaron aleatoriamente tres grupos: grupo trampolín (GT), grupo control (GC) y grupo entrenamiento normal (GEN). El GT realizó un entrenamiento de trampolín (ET) tradicional (duración aproximada de 45 min; intensidad de 75-85% de la frecuencia cardiaca máxima). Se realizaron mediciones pre test y post test de la estabilidad (centro de presión), velocidad en 20 m y altura de salto (CMJ). Respecto a la estabilidad, en bipedestación el GT empeoró significativamente (p0.05) y el GEN (p>0.05) no tuvieron un cambio significativo. Como conclusiones, se evidenció una disminución significativa de la estabilidad del GT en bipedestación y, en los elementos de stuntliberty, awesome y arebesque. La altura del CMJ del GT tuvo una disminución no significativa. La velocidad en 20 m del GT fue significativamente menor después del ET.

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of PODIUM- Revista de Ciencia y Tecnologia en la Cultura Física is the property of Universidad de Pinar del Rio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Ciência e Movimento: RBCM is the property of Revista Brasileira de Ciencia e Movimento and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of PODIUM- Revista de Ciencia y Tecnologia en la Cultura Física is the property of Universidad de Pinar del Rio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of RICYDE. Revista Internacional de Ciencias del Deporte is the property of Revista Internacional de Ciencias del Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Ciência e Movimento: RBCM is the property of Revista Brasileira de Ciencia e Movimento and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aedo-Muñoz, E., Tamayo Contreras, V., Rojas Reyes, C., Hernández Wimmer, C., Brito, C., Miarka, B., Arghoty Bucheli, R., Dal Bello, F y Herrera Valenzuela, T. (2020). Potencia y actividad electromiográfica en voleibolistas universitarios. Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud, 18(1), 1-14. El propósito del estudio fue determinar la potencia relativa del miembro inferior y actividad electromiográfica de superficie (EMGs) del glúteo mayor (GM), vasto medial (VM), vasto lateral (VL) y gastrocnemio lateral (GASLAT), durante un salto contramovimiento (CMJ) y un salto Abalakov (ABK). Un total de 24 voleibolistas universitarios se dividieron en dos grupos iguales asignados por el nivel de competencia: el grupo 1 (G1), compuesto por voleibolistas de 1ª división universitaria y el grupo 2 (G2), compuesto por voleibolistas de 2ª división universitaria. Cada uno fue sometido a dos evaluaciones simultáneas de potencia y EMGs. Para la potencia se utilizó un sistema de grabación en 2D, por medio de un seguimiento del trocánter mayor con una cámara de 250 fps. Esta grabación se sometió a una medición por medio de software (TrackerÒ), para obtener los valores de potencia absoluta. La EMGs se realizó por medio de un electromiógrafo Delsys TrignoÒ en los músculos GM, VM, VL y GASLAT. Se presentaron diferencias significativas en %PeakRMS del VL (G1=65.210.2; G2=54.0±11.7 %PeakRMS; p0.05) y ABK (p>0.05).

Futebol é um esporte intermitente caracterizado por ações de alta intensidade. Um método comumente usado para predizer a potência muscular é a aferição da massa muscular. O presente estudo visa analisar a relação entre a área muscular da coxa (AMC) e a altura do teste de salto vertical contra movimento (CMJ) em um grupo de jogadores profissionais de futebol. Foram avaliados 29 atletas. A AMC foi predita usando o protocolo de Frisancho e o CMJ foi feito em plataforma de força portátil. A correlação entre as variáveis dependente e independente foi testada pelo coeficiente de Spearman (rs). O software SPSS 20.0 foi utilizado para análise estatística, sendo significativo p

O objetivo do presente estudo foi investigar o efeito de atividades condicionantes sobre a potenciação pós-ativação (PPA) em atletas de luta olímpica. Para isso 8 atletas de luta olímpica (22,1 ± 3,4 anos; 70,5 ± 10,2 kg; 170,1 ± 0,1 cm) realizaram duas condições experimentais (CPPA e CC). A condição de potenciação pós ativação (CPPA) consistiu na realização de 3 séries de 6 saltos consecutivos com contra movimento, mantendo um intervalo entre as séries de 2 minutos e foi comparada com uma sessão controle (CC), na qual foi realizada sem nenhuma atividade prévia. As condições foram separadas por no mínimo 48 e máximo de 168 horas de intervalo e aleatorizadas através de ordem. Durante as avaliações os sujeitos realizaram três tentativas individuais em cada um dos saltos verticais (SJ e CMJ), sendo considerada a melhor marca em cada tipo de salto entre as três tentativas. Os desempenhos dos SJ e CMJ, foram avaliados no aparelho Ergojump® e os dados foram analisados pelo software Kinematic Measurement System®. Para comparar as condições experimentais, o teste ‘‘t’’ de Student para amostras independentes foi aplicado, respeitando uma significância estatística menor que 5%. Os resultados do presente estudo demonstraram nenhum efeito da atividade condicionate (SJ – CC: 0,383 ± 0,063 m vs CPPA: 0,431 ± 0,069 m; p = 0,79), (CMJ – CC: 0,41 ± 0,035 m vs CPPA: 0,44 ± 0,031 m; p = 0,96). Podemos concluir que a atividade condicionante proposta em nosso estudo não foi capaz de induzir a potenciação em atletas de luta olímpica. ABSTRACT Warm-up activity does not produce potentiation post-activation in wrestling athletes The aim of the present study was to investigate the effects of a warm-up activity on the potentiation post-activation (PPA) in wrestling athletes. 8 wrestling athletes (22,1 ± 3,4 anos; 70,5 ± 10,2 kg; 170,1 ± 0,1 cm) performed two experimental conditions (CPPA and CC). Three sets of six counter movement jumps represented the CPPA and such condition has been compared to CC, which none previous activity has happened. The experimental conditions have been separated by a minimum of 48 and a maximum of 168 hours of difference and they have been also randomized. Three attempts were done and the best score was used. The jumps’ performance was assessed using the Ergojump® equipment and the data were analyzed through the Kinematic Measurement System® software. The ‘’t’’ Student test has been applied for non-paired comparisons and the significance was set at 5%. The outcomes of the present study demonstrated no PPA effect (SJ – CC: 0.383 ± 0.063 m vs CPPA: 0.431 ± 0.069 m; p = 0.79), (CMJ – CC: 0.41 ± 0.035 m vs CPPA: 0.44 ± 0.031 m; p = 0.96). In conclusion, the warm-up activity proposed by this study was not capable to induce PPA in wrestling athletes.

Copyright of Revista Brasileira de Prescrição e Fisiologia do Exercício is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of this research is to relate the performance in three vertical jump events with morphological variables of the foot and stature. A total of 177 practitioners of 12 sporting events aged 24.5 ±8.0 years, with 71.01 ±13.00 kg of body mass, 1.71±0.09 m height, and BMI of 24.29±3.24 kg·m-2 were evaluated with an anthropometer in terms of foot length (FL), forefoot width (FW), navicular height (NH), and hindfoot width (HW). These variables were normalized to the height of the subjects. From the footprint record the arch index (AI) was obtained, which indicates the morphology of the medial longitudinal foot arch (MLFA). Performance was evaluated in three vertical jump events: countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ), recording the height reached. FL, FW and HW show a weak positive correlation (r<0.4; p<0.05) with the heights achieved in the three types of jump. The stature is strongly associated with FL, FW and HW (r=0.8; r=0.7 and r=0.6; respectively; p<0.05) and with the height in CMJ, SJ, and DJ (r=0.37; r=0.41 and r=0.32, respectively, p<0.05). The only normalized morphological foot variable that maintained consistency in the correlations analysis was the normalized foot length (NFL) with CMJ (r = 0.2, p<0,05). The subjects whose left foot length was equivalent to 14 % of the stature jumped 27.94 ±6.63 cm, those with 15 % jumped 30.96 ±7.4 cm, and those with 16 % jumped 31.03 ±7.8 cm. FL, FW, HW, and stature are moderately correlated with performance in vertical jump events. However, after discarding the stature of the subjects, only the foot length maintained its relation with performance in CMJ. [ABSTRACT FROM AUTHOR]

Copyright of Revista Brasileira de Prescrição e Fisiologia do Exercício is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Ciência e Movimento: RBCM is the property of Revista Brasileira de Ciencia e Movimento and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)