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Communities in RUIdeRA
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Publication
Variables Determining the Drag Flick in Field Hockey Players
(INEFC, 2012) Lopez de Subijana, Cristina; Gómez , María; Navarro , Enrique; Martín Casado, Laura
The penalty corner is one of the most important game situations in field hockey. Women use the drag flick less than men. The objectives of this paper were to describe the kinematic parameters of the drag flick in specialist players and discover the variables determining the performance of this technical strike by hockey players. We analysed fifteen flicks by five players using 6 VICON automatic capture system cameras recording at 250 Hz. To compare means we used nonparametric one-way Kruskal Wallis analysis (subject). Those parameters in which significant differences were found were compared in pairs using a Mann Whitney U test. Players 1 (22.5 ?.9 m/s) and 3 (22.6 ?0.7 m/s) recorded higher ball speeds from the stick (p < 0.001) than all the other players (19.1 ?0.7 m/s player 2; 20.5 ? 0.4 m/s player 4 and 19.9 ?0.4 m/s player 5). Player 1 bases their final acceleration on a long double support, with a sequence of speeds and distance travelled as extensive as possible. However, player 3 bases their speed on the prior swing and on a sequence of explosive movements. The individual characteristics of each player play an important role in the choice of technical strategy when flicking the ball.
Publication
Sex differences in kinetic and neuromuscular control during jumping and landing
(PubMed Central, 2017) Márquez Sánchez, Gonzalo; Jaen Diego,; Alegre Durán, Luis María; Martín Casado, Laura; Aguado Jódar, Xavier
In the present study, we analysed the kinetic profile together with the lower limb EMG activation pattern during a countermovement jump and its respective landing phase in males and females. Twenty subjects (10 males and 10 females) took part in the study. One experimental session was conducted in order to record kinetic and electromyographic (EMG) parameters during a countermovement jump (CMJ) and the subsequent landing phase. During the CMJ, males recorded a higher (p<0.001) performance than females in terms of jump height and power production. Stiffness values were lower in
males than females due to greater centre of mass displacement during the countermovement (p<0.01). According to the EMG activity, males demonstrated greater (p<0.05) activation during the concentric phase of the jump. However, females revealed a higher co-contraction ratio in the plantar flexors during the push-off phase. During landings males showed higher (p<0.01) peak ground reaction forces (Fpeak), greater (p<0.05) stiffness and a higher maximal displacement of the CoM (p<0.05) than females. EMG analysis revealed greater EMG activity in the tibialis anterior (p<0.05) and rectus femoris (p=0.05) muscles in males. Higher plantar flexor co-activation during landing has also been found in males. Our findings demonstrated different neuromuscular control in males and females during jumping and landing.
Publication
Disposición a pagar por las etiquetas de eficiencia energética en electrodomésticos en España: el caso de las lavadoras
(FUNCAS, 2025) López Bernabé, Elena
Los electrodomésticos representan una proporción considerable del consumo eléctrico residencial, lo que los convierte en un objetivo clave para los esfuerzos de ahorro energético. Las etiquetas de eficiencia energética son un instrumento fundamental para informar a los consumidores sobre la eficiencia de los aparatos y fomentar la compra de aquellos más eficientes. Este artículo aplica el método de precios hedónicos para estimar la prima de precio asociada a la eficiencia energética en el mercado de lavadoras en España. Los resultados indican que los consumidores están dispuestos a pagar una prima del 11 % por lavadoras de alta eficiencia energética, en comparación con otras de las mismas características, pero menos eficientes. Esto equivale aproximadamente a 67 euros sobre el precio medio de mercado de las lavadoras en España. Además, se observa un aumento de más del 5 % en esta prima entre 2012 y 2019. El análisis también muestra que otros atributos, como la marca, el lugar de venta, la eficiencia del centrifugado y el hecho de que sean lavadoras integrables, juegan un papel clave en la decisión de compra.
Publication
TRAINING-INDUCED CHANGES IN DRAG-FLICK TECHNIQUE IN FEMALE FIELD HOCKEY PLAYERS
(Termedia, 2012) Lopez de Subijana, Cristina; Gómez , María; Navarro , Enrique; Martín Casado, Laura
The penalty corner is one of the most important goal plays in field hockey. The drag-flick is used less by women than men in a penalty corner. The aim of this study was to describe training-induced changes in the drag-flick technique in female field hockey players. Four female players participated in the study.
The VICON optoelectronic system (Oxford Metrics, Oxford, UK) measured the kinematic parameters of the drag-flick with six cameras sampling at 250 Hz, prior to and after training. Fifteen shots were captured for each subject. A Wilcoxon test assessed the differences between pre-training and post-training parameters. Two players received specific training twice a week for 8 weeks; the other two players did not train. The proposed drills improved the position of the stick at the beginning of the shot (p<0.05), the total distance of the shot (p<0.05) and the rotation radius at ball release (p<0.01). It was noted that all players had lost speed of the previous run. Further studies should include a larger sample, in order to provide more information on field hockey performance.



