Incidence injury analysis on rowers in the Spanish Mediterranean fixed bench championship 2012

The standardized assessment of sports injuries provides important epidemiological information and instructions to prevent them. The aim of this study was to determine if the pattern detrimental impact on fixed seat rowing agreed with the literature review of the Olympic rowing modality. A retrospective questionnaire was administer to 79 male rowers, with an age mean of 27.66 ± 7.15, belonging to the male in the senior category VIII Rowing Spanish Mediterranean Bank Fixed Championship that took place in Torrevieja during the 25th, 26th and 27th of May. The anatomical regions that were damage the most were the ankle (15.4%) and lower back (13.2%). These injuries have occurred with higher incidence in training (55.1%) as the most recidivist injury, the ankle, which has occurred for 73% of the time during this moment. The most common injury is the overuse (44.2%) and the most repeated diagnosis was sprain (23.1%).

Serve analysis of professional players in beach volleyball

This study has been developed for the European Beach Volleyball Championship in 2005. The video-recorded analysis was held using Sportcode Pro v.8.5.2 software. The aim of study was to determine the types of serve used, depending on the time of the set in which they occur. Quantitative analysis with a sample of 10 players that make up 5 teams with a total of four meetings with a total of 327 serves analyzed. The serves were classified depending on the period which they occurred, the period being 1 (items 1 to 7), period 2 (from point 8 to 14) and period 3 (point 15 to 21). he statistical analysis was conducted using the statistical software SPSS 19, Chi-square test established significant differences between the different types of serve for period 1 and 2 (p<0.05), but no significant differences were established in the period 3 to floating serve and power jump (p>0.05). The results showed a decrease of using a serve with jump power at period 1 (89.7%) compared to the period 3 (27.3%), while the floating and floating serve jump respectively increase at period 1 (6.3% -4%) in the period 3 (23.4% -49.4%).

Estudio sobre la utilización de los gestos técnicos en pelota valenciana en jugadores profesionales

Debido a la escasez de estudios de análisis en pelota valenciana, hemos centrado este estudio en este deporte. El objetivo de estudio ha sido analizar y cuantificar los tipos de golpeos, y comparar los mismos entre las posiciones de juego de resto y medio. Para ello se han llevado a cabo el análisis de 6 partidas de la XIX Liga Profesional de «escala i corda» 2009-2010, y en concreto de 12 jugadores, utilizando el software de análisis Sports Code v.8.5.2. Los resultados nos indican diferencias significativas (p<0.05) entre los golpeos efectuados por el jugador resto y el jugador medio en el rebote y rebote a golpe de mano derecha e izquierda y caída de escalera de mano derecha; siendo estos prácticamente realizados únicamente por los jugadores de la posición resto. Al mismo tiempo encontramos datos que nos evidencian por otra banda golpeos utilizados principalmente por jugadores medios, estas han sido el golpeo de volea, el bote de brazo, el calbote, la palma, y el manró todos ellos de mano derecha. Como conclusión del estudio, hemos obtenido que dependiendo de la posición de juego los jugadores utilizan unos tipos de golpeo u otros. Por tanto, afirmamos, que el análisis del alto rendimiento en escala i corda desde los avances de las tecnologías, nos aporta una valiosa información para establecer patrones de entrenamiento específicos.

Análisis del saque en jugadoras femeninas profesionales de vóley playa

El objetivo de estudio es conocer los tipos de saques utilizados, dependiendo el momento del set en el que se producen. Este estudio ha sido desarrollado durante el torneo Nestea Spanish Master de Vóley Playa disputado en Valencia en el año 2006. La muestra de estudio la componen 10 jugadoras que conforman 5 equipos con un total de 4 encuentros analizados que suman 331 saques analizados. El análisis de las videograbaciones se llevó a cabo con el software SportCode Pro v.8.5.2. Los saques se clasificaron dependiendo del momento en el que se produjeron, siendo la franja 1 (del punto 1 al 7), franja 2 (del punto 8 al 14) y franja 3 (del punto 15 al 21). El análisis de datos se llevo a cabo con el software SPSS v.19. La prueba Chi-cuadrado, estableció diferencias significativas entre los diferentes tipos de saques para la franja 1 y 3 (p<.05), pero no se establecieron diferencias significativas en la franja 2 para los tres tipos de saque utilizado (p>.05). Se experimenta una disminución en el uso del saque en potencia (SP) de la franja 1 (84.1%) con respecto al de la franja 3 (4.8%), mientras que el saque flotante (SF) aumenta de la franja 1 (13.5%) a la franja 3 (81%). Finalmente el saque flotante (SF) en salto aumentan de la franja 1 (2.4%) a la franja 2 (28%) y decrece de esta última a la franja 3 (14.3%).

Injury incidence in judokas at the Spanish National University Championship

Background and Study Aim: Understanding injury incidence rates will be a great help with regards to preventing potential future damages. It is for this reason that this study suggests studying a large number of variables. The purpose of research is the relationship of events (empirical variables) that are usually taken into account in developing injury prevention programs during the battles and training in judo tournament. Material and methods: In this research project, 57 male judokas taking part in the Spanish National University Championship in 2009 were asked to complete a retrospective questionnaire. We analysed the following events: the most commonly injured body regions, the medical diagnosis, how and when the injury happened, the type of injury, the side of the body and the type of medical attention received. For the statistical analysis, we used the SPSS statistics programme to apply the Chi-square test in order to determine the significance levels for non-parametric tests from p<.05. Results: Significant differences were found in the most commonly injured body region, the shoulder/clavicle (p<.05), and in the most common diagnosis, the sprain (p<.05). Impact injuries (p<.05) are the most common and training (p<.05) is the most dangerous time. About the type of injury, 78.38% are new injuries (p<.05) and 69.05% affect the right hand side of the body (p<.05). Doctors are the most consulted specialists, but the physiotherapists obtained the best marks. Have been out due to injury for over 21 days 36.36% of the participants, but not for the entire season. Conclusions: The most common diagnosis in university student judokas coincides with those of elite judokas, with the sprain being the most common. University student judokas have a higher rate of shoulder/clavicle injuries, while professional judokas are prone to a higher rate of knee injuries. Training is the most common moment in which injuries occur, both in university student judokas and professional judokas. New injuries are the most common types of injuries in university student judokas and, while doctors are the most consulted specialists, the physiotherapists obtained the best marks.

Effects of whole body vibration on strength and jumping performance in volleyball and beach volleyball players

The primary aim of this study was to examine the effects of 6-week strength training with whole body vibration (WBV) on leg strength and jumping performance in volleyball and beach volleyball players. Twenty-three sub-elite male volleyball (VB; n=12) and beach volleyball players (BVB; n=11) aged 21.2±3.0 years were divided into two groups and subjected to 6 weeks of strength training (three one-hour sessions per week): (I) 12 players (6 VB and 6 BVB players) underwent training with WBV (30-40 Hz, 1.7-2.5 mm, 3.0-5.7 g), and (II) 11 players (6 VB and 5 BVB players) underwent traditional strength training. Squat jump (SJ) and countermovement squat jump (CMJ) measurements by the Ergo Tester contact platform and maximum leg press test (1RM) were conducted. Three-factor (2 time x 2 WBV use x 2 discipline) analysis of variance for SJ, CMJ and 1RM revealed a significant time main effect (p<0.001), a WBV use effect (p<0.001) and a discipline effect (p<0.001). Significantly greater improvements in the SJ (p<0.001) and CMJ (p<0.001) and in 1RM (p<0.001) were found in the WBV training groups than in traditional training groups. Significant 3-way interaction effects (training, WBV use, discipline kind) were also found for SJ, CMJ and 1RM (p=0.001, p<0.001, p=0.001, respectively). It can be concluded that implementation of 6-week WBV training in routine practice in volleyball and beach volleyball players increases leg strength more and leads to greater improvement in jump performance than traditional strength training, but greater improvements can be expected in beach volleyball players than in volleyball players.

El uso de los formularios online como una herramienta ubicua de realimentación docente

En este artículo, se presentan las experiencias en la introducción del formulario online como una herramienta muy efectiva que permite comunicar a los alumnos y los docentes con unos resultados muy positivos. El procedimiento de trabajo establecido fue el siguiente. En primer lugar, el equipo docente establece unos objetivos de aprendizaje y los distribuye en el cuatrimestre. Para cada sesión teórica, se prepara un cuestionario que explora los contenidos del día. Este cuestionario, que se prepara en una herramienta abierta, a la que todos los alumnos tienen acceso, se presenta a los alumnos veinte minutos antes de finalizar la clase. Los alumnos pueden contestar en la clase con sus ordenadores portátiles, móviles o tabletas, sin importar el sistema operativo al tratarse de aplicaciones en la red basadas en navegadores web. Para facilitar la inclusión de alumnado que no ha podido asistir físicamente a clase, pero sigue los contenidos a través de los materiales que el equipo docente publica previamente a la clase, los formularios quedan abiertos hasta la medianoche de ese día. Los resultados demuestran el alto nivel de transmisión de los contenidos en una verdadera evaluación continua que, a su vez, se percibe por el alumnado muy positivamente.

Palladium and Bimetallic Palladium–Nickel Nanoparticles Supported on Multiwalled Carbon Nanotubes: Application to Carbon–Carbon Bond-Forming Reactions in Water

Palladium and bimetallic Pd–Ni nanoparticles (NPs) protected by polyvinylpyrrolidone were prepared by the reduction-by-solvent method and deposited on multiwalled carbon nanotubes (MWCNTs). The catalytic activity of these NPs to carbon–carbon bond-forming reactions was studied by using 0.1 mol % Pd loading, at 120 °C for 1 h and water as a solvent under ligand-free conditions. The Suzuki–Miyaura reaction took place quantitatively for the cross-coupling of 4-bromoanisole with phenylboronic acid, better than those obtained with potassium phenyltrifluoroborate, with Pd50Ni50/MWCNTs as a catalyst and K2CO3 as a base and TBAB as an additive, with good recyclability during 4 cycles with some Ni leaching. The Hiyama reaction of 4-iodoanisole with trimethoxyphenylsilane, under fluoride-free conditions using 50 % aqueous NaOH solution, was performed with Pd/MWCNTs as a catalyst in 83 % yield with low recyclability. For the Mizoroki-Heck reaction 4-iodoanisole and styrene gave the corresponding 4-methoxystilbene quantitatively with Pd50Ni50/MWCNTs using K2CO3 as a base and TBAB as an additive although the recycle failed. In the case of the Sonogashira-Hagihara reaction, Pd/MWCNTs had to be used as a catalyst and pyrrolidine as a base for the coupling of 4-iodoanisole with phenylacetylene under copper-free conditions. The corresponding 4-methoxytolane was quantitatively obtained allowing the recycling of the catalyst during 3 cycles.