Explore the vast range of titles available.

Interventions based on improving athletes’ adaptive capacity to game environment conditions have been widely developed in sports science. The objective of this study was to systematically review the scientific literature on interventions and applications, from an ecological perspective, for the tactical performance of volleyball players. A systematic search was conducted in five electronic scientific databases in accordance with PRISMA guidelines: Web of Science (WOS), PubMed (Medline), Scopus, SportDiscus and Google Scholar. A total of eight studies met the inclusion criteria, all published after 2014. The risk of bias and main characteristics of the articles in different contexts were assessed. Particular attention was paid to recording data related to the characteristics of manipulation or the timing of the intervention. The results showed that these approaches influenced tactical variables in volleyball game situations. In this sense, short-session interventions with small-sided games and modifications of structural elements aid athletes’ self-regulation in different environments. Furthermore, results show that this approach allows for improvements in individual and collective tactical behavior. Based on the data analyzed, we recommend the use of ecological tasks, based on representative and modified practices that promote player adaptation, as a methodological tool in the volleyball training process.

Over the past few decades there has been great interest in the study of cognitive processes, and specifically decision-making, from a cognitive perspective. The aim of the present study was to systematically review the scientific literature on the effect of decision training interventions/programs, from a cognitive perspective, on the decision-making of volleyball players. The systematic search was carried out in five scientific electronic databases according to PRISMA guidelines Web of Science (WOS), Pubmed (Medline), Scopus, SportDiscus and Google Scholar. A total of eight studies met the inclusion criteria. The main finding of the meta-analysis was that the use of decision-making training programs/interventions led to significant improvements in volleyball players’ decision-making (Standardized mean difference = 0.94 with 95% confidence interval from 0.63 to 1.25), compared to normal active volleyball training. In addition, the heterogeneity of the interventions was low (I2 = 0%). From the results of the studies analyzed, we recommend using decisional interventions or training, both as part of normal active training or complementary to it, to improve the decision-making of the players, thus optimizing their ability to perceive and process relevant stimuli, and then generate quick and effective responses. These findings can be useful in the process of sports training.

Understanding the reliability of jump testing is essential to determine the neuromuscular progress of athletes and make informed decisions. This study aimed to assess the reliability of several countermovement jump (CMJ) and drop jump (DJ) test metrics in female volleyball players. Sixteen (n = 16) semi-professional female volleyball players participated in this test-retest study. Intrasession and intersession reliability of CMJ and DJ metrics were evaluated using a randomized cross-over design. A dual force platform was used to collect CMJ and DJ data, and several dependent variables were calculated using forward dynamics. Intraclass correlation coefficients (ICC), coefficients of variation (CV), and minimum difference (MD) were calculated to assess intra- and interday reliability. During the same testing, the third attempt consistently yielded the highest values for both tests in jump height but presented excellent reliability (CMJ: ICC [95%CI] = 0.97 [0.93–0.99]; CV [95%CI] = 4.1% [1.2–7.0]; MD95 = 3.5 cm; MD90 = 2.9 cm; DJ: ICC [95%CI] = 0.91 [0.77–0.97]; CV [95%CI] = 6.7% [1.9–11.5]; MD95 = 6.0 cm; MD90 = 5.0 cm). CMJ height exhibited excellent reliability between sessions (ICC [95%CI] = 0.93 [0.81–0.97]; CV [95%CI] = 3.8% [1.1–6.4]; MD95 = 3.5 cm; MD90 = 3.0 cm), whereas DJ height demonstrated slightly lower but still acceptable intersession reliability (ICC [95%CI] = 0.81 [0.55–0.93]; CV [95%CI] = 6.1% [1.7–10.4]; MD95 = 5.2 cm; MD90 = 4.4 cm). Intersession reliability for CMJ kinetics and kinematics was excellent for 13 of the 24 metrics assessed. For DJ, only concentric (ICC [95%CI] = 0.91 [0.76–0.97]; CV [95%CI] = 3.0% [0.9–5.2]; MD95 = 15 Ns; MD90 = 12.6 Ns) and eccentric impulses (ICC [95%CI] = 0.99 [0.96–0.99]; CV [95%CI] = 1.7% [0.5–2.9]; MD95 = 9.2 Ns; MD90 = 7.7 Ns) demonstrated excellent intersession reliability. Most CMJ variables showed excellent reliability within sessions, while DJ had lower reliability in most metrics. These findings provide valuable information to physical trainers to select the metrics to assess athletes’ performance as well as to identify a minimum cut-off value that serves as a reference for each of the metrics reported in both tests.

The study aim was to examine the associations between the category of play and the factors athletes use to make appropriate decisions. We observed 6567 game actions performed by 144 athletes. All game actions involved appropriate decisions. The study variables were factors on which appropriate decision-making is based (for five game actions in volleyball: serve, reception, setting, attack, block) and game category (Under-14, Under-16, Under-19). Our analysis—using contingency tables, the Chi-square test, and Cramer’s V—revealed a significant association between the two variables across the five actions. In the U-14 category, and sometimes in the U-16 category, it was more frequent than the expected random frequency that appropriate decisions were of low tactical complexity, focused on the performance of the skill, with an attentional focus on close elements, of low risk, and with actions of reduced difficulty and precision. For the U-19 category, it was more frequent than the expected random frequency that decisions were of greater tactical complexity, with an attentional focus on the opposing team, considering more relevant stimuli, with greater risk, and with greater time pressure. There is, therefore, a need for coaches to understand the decision-making skills of athletes from early on, as this will allow them to develop tasks and apply cognitive strategies that are adapted to the level of the athlete and that can ultimately improve decision-making further.

The aim of the research was to find out the levels of physical activity and satisfaction of Basic Psychological Needs in adolescents from the Siberia region of Extremadura, to analyse the differences according to sex, as well as to analyse the relationship between levels of physical activity, satisfaction of basic psychological needs and sex. The sample consisted of 204 subjects (92 boys, 112 girls) aged between 10 and 16 years. The Assessment of Physical Activity Levels Questionnaire (APALQ) and the Basic Psychological Needs in Physical Education (BPN-PE) scale were used to assess basic psychological needs. The results showed levels of physical activity (moderately active level, very close to sedentary level) and basic psychological needs that were not very high. By gender, it was observed that girls had a sedentary level of physical activity compared to the moderately active level of boys. Specifically, significant differences were found in the levels of physical activity and competence according to gender. Thus, the male sex felt more competent and performed higher levels of physical activity than the female sex. Furthermore, it was observed that gender, physical activity and satisfaction of basic psychological needs were related to each other. The positive and significant correlation between gender and competence, physical activity levels and competence, and gender and physical activity levels was found to be significant. El objetivo de la investigación fue conocer los niveles de actividad física y satisfacción de las Necesidades Psicológicas Básicas en adolescentes de la Comarca de Extrema Siberia. Además de analizar las diferencias en la función sexual, así como analizar la relación entre los niveles de actividad física, la satisfacción de las necesidades psicológicas básicas y el sexo. La muestra estuvo realizada por 204 sujetos (92 hombres, 112 mujeres) con edades comprendidas entre 10 y 16 años. Para analizar el nivel de actividad física se utilizó el Cuestionario de Evaluación de Niveles de Actividad Física (APALQ) y la escala de Necesidades Psicológicas Básicas en Educación Física (BPN-PE), para evaluar las necesidades psicológicas básicas. Los resultados mostraron unos niveles de actividad física (nivel moderadamente activo, muy cercano al nivel sedentario) y necesidades psicológicas básicas que no eran muy elevadas. Respecto al sexo, se observó que las mujeres presentaron un nivel de actividad física sedentaria en comparación con el nivel moderadamente activo del sexo masculino. En concreto, se encontrarán diferencias significativas en los niveles de actividad física y competencia en relación al sexo. Por tanto, el sexo masculino se siente más competente y realiza mayores niveles de actividad física que el sexo femenino. Además, se observó cómo se relacionaban entre sí el sexo, la actividad física y la satisfacción de necesidades psicológicas básicas. Destacando la correlación positiva y significativa entre sexo y competencia, niveles de actividad física y competencia, y sexo con niveles de actividad física.

El estudio del conocimiento táctico adquiere una gran importancia sobre la mejora de la toma de decisiones del deportista en el contexto deportivo. Esto hace que exista un interés por analizar qué variables predicen dicho conocimiento. Por ello, el objetivo de la investigación fue determinar si las variables días de entrenamiento semanales, categoría de inicio en práctica federada, experiencia, horas de entrenamiento semanales, o edad, predicen el conocimiento táctico. La muestra estuvo compuesta por 294 deportistas de edades entre 10 y 19 años (M: 16.05; SD: 1.78). El conocimiento se midió mediante un cuestionario validado de conocimiento táctico en voleibol (CCPV). El análisis de regresión mostró que ninguna de las variables estudiadas fue predictora del conocimiento. Por lo tanto, se considera conveniente analizar otro tipo de variables, referidas a las características y calidad del entrenamiento, como las vivencias y experiencias de los deportistas en el contexto del entrenamiento o la intervención del entrenador, que de manera aislada o conjuntamente con otras variables quizá actúen como predictoras del conocimiento.

El objetivo de la investigación fue conocer los niveles de actividad física y satisfacción de las Necesidades Psicológicas Básicas en adolescentes de la Comarca de Extrema Siberia. Además de analizar las diferencias en la función sexual, así como analizar la relación entre los niveles de actividad física, la satisfacción de las necesidades psicológicas básicas y el sexo. La muestra estuvo realizada por 204 sujetos (92 hombres, 112 mujeres) con edades comprendidas entre 10 y 16 años. Para analizar el nivel de actividad física se utilizó el Cuestionario de Evaluación de Niveles de Actividad Física (APALQ) y la escala de Necesidades Psicológicas Básicas en Educación Física (BPN-PE), para evaluar las necesidades psicológicas básicas. Los resultados mostraron unos niveles de actividad física (nivel moderadamente activo, muy cercano al nivel sedentario) y necesidades psicológicas básicas que no eran muy elevadas. Respecto al sexo, se observó que las mujeres presentaron un nivel de actividad física sedentaria en comparación con el nivel moderadamente activo del sexo masculino. En concreto, se encontrarán diferencias significativas en los niveles de actividad física y competencia en relación al sexo. Por tanto, el sexo masculino se siente más competente y realiza mayores niveles de actividad física que el sexo femenino. Además, se observó cómo se relacionaban entre sí el sexo, la actividad física y la satisfacción de necesidades psicológicas básicas. Destacando la correlación positiva y significativa entre sexo y competencia, niveles de actividad física y competencia, y sexo con niveles de actividad física. Palabras clave: Ejercicio, Educación Física, adolescentes, motivación. Abstract. The aim of the research was to find out the levels of physical activity and satisfaction of Basic Psychological Needs in adolescents from the Siberia region of Extremadura, to analyse the differences according to sex, as well as to analyse the relationship between levels of physical activity, satisfaction of basic psychological needs and sex. The sample consisted of 204 subjects (92 boys, 112 girls) aged between 10 and 16 years. The Assessment of Physical Activity Levels Questionnaire (APALQ) and the Basic Psychological Needs in Physical Education (BPN-PE) scale were used to assess basic psychological needs. The results showed levels of physical activity (moderately active level, very close to sedentary level) and basic psychological needs that were not very high. By gender, it was observed that girls had a sedentary level of physical activity compared to the moderately active level of boys. Specifically, significant differences were found in the levels of physical activity and competence according to gender. Thus, the male sex felt more competent and performed higher levels of physical activity than the female sex. Furthermore, it was observed that gender, physical activity and satisfaction of basic psychological needs were related to each other. The positive and significant correlation between gender and competence, physical activity levels and competence, and gender and physical activity levels was found to be significant. Keywords: Exercise, Physical Education, adolescents, motivation

El objetivo de la presente investigación fue conocer la asociación existente entre el resultado final del set y variables de la acción de colocación en el complejo I (KI) y complejo II (KII). La muestra del estudio estuvo formada por un total de 1209 acciones de colocación (856 en KI y 353 en KII), realizadas por los 16 equipos, participantes en el Campeonato de España de Selecciones Autonómicas de categoría cadete masculina. Las variables del estudio fueron el resultado del set y variables de la acción de colocación en KI y KII (zona de colocación, tipo de colocación, técnica de colocación, eficacia de la colocación, zona de envío de la colocación y tiempo de colocación). Los resultados de nuestro estudio mostraron que, en ambos complejos de juego, existía una asociación significativa entre el resultado del set y la zona de colocación, la técnica de colocación y la eficacia de colocación. En KI, los resultados mostraron que existía una asociación significativa entre el resultado del set y el tipo de colocación, la zona de envío de la colocación y el tiempo de colocación. Ninguna variable mostró asociación únicamente en KII. La colocación, a pesar de ser una acción de juego intermedia, mediante la cual no es posible obtener punto directamente, posee gran relevancia en el juego, asociándose determinados rasgos de la misma (en KI y KII) al resultado del set.Abstract. The aim of the study was to determine the relationship between the result of the set and variables of setting action in the complex I (KI) and complex II (KII). The study sample consisted of 1209 setting actions (856 in KI and 353 in KII), corresponding to the 16 male teams involved in the Spanish Championship in U-16 category. The study variables were result of set and setting variables in KI and KII (zone of set, type of set, setting technique, setting effectiveness, set area and time of setting). The results showed, in both game complexes, significant association between the result of the set and zone of set, setting technique, and setting effectiveness. In KI, the results showed a significant association between the result of set and type of set, the set area and time of setting. No variables displayed associations only in the KII. The setting action, despite being an intermediate game action, through which it is not possible to obtain direct points, has great relevance in the game, and some of its aspects are associated (in KI and KII) with the result of the set.

El objetivo principal de la presente investigación fue conocer las variables, relativas a la recepción, que actúan como predictoras de la eficacia de la recepción. Se analizaron 1325 acciones de recepción, extraídas de un total de 21 equipos participantes en el Campeonato de España Masculino de Categoría Juvenil de 2012. La variable dependiente considerada en la investigación fue la eficacia de la recepción. Las variables independientes fueron: movimiento del receptor, función del receptor, tipo de recepción, zona de recepción-profundidad, zona de recepción-lateralidad. La regresión logística multinomial realizada mostró que las variables movimiento del receptor, tipo de recepción y zona de recepción-lateralidad, actuaron como predictoras de la eficacia de la recepción. Concretamente, la eficacia de la recepción aumentaba si el receptor realizaba un desplazamiento previo y conseguía contactar en posición estática, y si recibía en el pasillo de zona 6, y a través de una técnica de antebrazos o de dedos. Los resultados obtenidos pueden orientar el proceso de entrenamiento de la recepción del saque en voleibol de categoría juvenil. Abstract. The main objective of this research was to determine the variables, relatives of the reception that act as predictors of the reception efficacy. 1325 serve reception were analyzed, extracted from a total of 21 games played in the championship of Spain in U-19 male volleyball, in 2012. The variable dependent on the study was the reception efficacy. The variables independent from the study were: receiver movement, in-game role of the receiver, type of reception, depth reception zone, laterality reception zone. The multinomial logistic regression performed showed that the variables, receiver movement, type of reception and laterality reception zone predicted the reception efficacy. Specifically the reception efficacy could increase if the receiver takes a previous displacement and contact in static position also the realization of service reception in corridor zone 6 and a through of the forearm pass or overhand pass. These results can serve to guide the training process both in training and in the category of high-level.