Tennis Coaches Perceptions of Covid-19 Impact on Their Health and Professional Activity: A Multi-Cultural Approach

[EN] Tennis coaches are facing considerable challenges as the game is disrupted by the COVID-19 pandemic. The long tradition of tennis in the Latin American region and in Spanish- and Portuguese-speaking European countries makes comparing these regions particularly interesting. The purpose of this research was to study the perceptions of Spanish- and Portuguese-speaking tennis coaches working in Latin American and European countries regarding the impacts of the COVID-19 pandemic on their health, professional, and economic circumstances. The perceptions of 655 coaches from 19 Latin American and European countries were collected using an ad-hoc questionnaire. Coaches reported on the incidence of the virus in terms of infection and quarantine, the impact on their coaching programs, and on their professional development, training, and education. They were also asked about their perception of the overall situation as a threat. The results showed that the COVID-19 pandemic has had a considerable impact on the health and the profession of tennis coaches. Although Latin American coaches reported a greater impact on their health, economic, and professional circumstances, they viewed the pandemic as an opportunity for professional improvement and training as compared to the perceptions of European coaches. In light of these results, implications, practical applications, and future research are proposed.Crespo, M.; Martínez-Gallego, R.; Ramón-Llín, J. (2021). Tennis Coaches Perceptions of Covid-19 Impact on Their Health and Professional Activity: A Multi-Cultural Approach. Sustainability. 13(10). https://doi.org/10.3390/su13105554131

A Cluster Analysis Approach to Profile Men and Women s Volley Positions in Professional Tennis Matches (Doubles)

[EN] Background: Tennis ball tracking technology allows the aquirement of novel and reliable data about several performance indicators, such as volley positions. This information is key to understand match dynamics in doubles tennis and to better help preparing players for the demands they will face in match play. As such, the purpose of this study was to describe and compare the different types of volley positions in men's and women's doubles professional tennis. (2) Methods: Ball tracking data were collected for 46 women (Billie Jean King Cup) and 96 men's doubles matches (Davis Cup). The variables used were the distance to the net, the distance to the centre of the court and the height of the impact. A K-Means cluster analysis was used to identify in each subsample different profiles of volley locations. (3) Results: The inferential analysis revealed differences in men's (distance to the net eta(2) = 0.72, distance to the centre of the court eta(2) = 0.77 and impact height eta(2) = 0.63) and women's subsamples (distance to the net eta(2) = 0.48, distance to the centre of the court eta(2) = 0.52 and impact height eta(2) = 0.51). (4) Conclusions: The results allowed the suggestion of a higher variability in men's matches, as there were seven different clusters identified, and only four in women's.This work was supported by the International Tennis Federation (Project: Notational analysis in doubles tennis ).Martínez-Gallego, R.; Ramón-Llín, J.; Crespo, M. (2021). A Cluster Analysis Approach to Profile Men and Women s Volley Positions in Professional Tennis Matches (Doubles). Sustainability. 13(11). https://doi.org/10.3390/su13116370131

Caso: Infección cutánea en el punto de punción de anestesia subaracnoidea

Mujer de 76 años de edad, con antecedentes de asma bronquial en tratamiento con bromuro de ipatropio e hipertiroidismo tratado con carbimazol. Artrosis generalizada y gonartrosis bilateral. Propuesta para cirugía traumatológica de protesis total de rodilla derecha. Se realiza técnica locorregional mediante anestesia subaracnoidea resultando exitosa tras 4 intentos fallidos de punción, confirmando salida de LCR transparente. Se administra bupivacaina isobárica 14 mg. más 20 mcg de fentanilo. Se administra Amchafibrin (según protocolo de la Unidad de Anestesia y Reanimación del Hospital Vega Baja de Orihuela)

Differences in kinematic and match-play demands between elite winning and losing wheelchair padel players

We aimed to compare the match-play and kinematic demands of the translation and rotation movements of elite wheelchair padel players as a function of match results. Twenty-two elite male players were video-analysed with a two-dimensional direct linear transformation (DLT) -corrected video system across seven matches of a professional tournament. Distance, turns, changes of direction, linear and angular speed, acceleration and the players’ heart rate (HR) were recorded. Losing couples in wheelchair padel covered greater distances than winners (P <0.001; r = 0.024) and did so at a higher speed (P <0.001; r = 0.06), while making greater efforts by accelerating (P <0.001; ∅ = -0.021), braking (P <0.001; ∅ = -0.014), and remaining less time stationary (P <0.001; ∅ = 0.059). In addition, losers performed more turns per rally (P <0.001; r = 0.04) at a faster speed, greater angular accelerations (P <0.001; V = 0.06) and greater average (P = 0.007; d = 0.91) and maximum (P = 0.20; d = 0.69) HR values. These data suggest that winner couples performed a better court positioning and employed a strategy to move the opponent during rallies in order to avoid them optimally reaching the ball.Sin financiación3.240 JCR (2020) Q2, 26/72 Multidisciplinary Sciences0.990 SJR (2020) Q1, 13/135 MultidisciplinaryNo data IDR 2020UE

Influence of the tactical formation on serve and follow-through parameters in professional padel

The aim were to analyse the effect of the tactical formation of the serving pair on serving and follow-through parameters in professional padel. 1089 points distributed in 217  men's matches (19 sets), corresponding to 8 matches of the World Padel Tour circuit played in 2020, were analysed by systematic observation. The results show that from the left side (p=0.002), in both formation the side wall is the predominant direction and independently of the player serving (p0.05), being the backhand volley the predominant one in both tactical situations. In conclusion, the serving situation influences the tactical parameters of the serve and return allowing the creation of specific strategies during the game

Influence of No-Ad Scoring in Temporal Strcuture and Matches’ Outcome in Professional Padel

El objetivo de este estudio fue analizar la influencia de la regla de punto de oro en las variables temporales y del marcador en el circuito profesional World Padel Tour, en función del género y la ronda del torneo. Se analizaron un total de 24 partidos correspondientes a la fase final del Marbella Máster 2019 (N = 12), que se jugó con ventajas, y del Marbella Máster 2020 (N = 12), que se jugó con punto de oro. Las variables analizadas fueron: género, ronda del torneo, duración del set, número de juegos por set, número de pelotas de break, número de breaks realizados e igualdad del set. Los resultados mostraron que el uso de la norma de punto de oro en el pádel profesional produjo un aumento significativo del número de breaks realizados. Además, aunque la duración del set disminuyó levemente, el número de juegos por sets aumentó, aunque estas diferencias no fueron significativas. No se encontraron diferencias en ninguna de las variables relacionadas con la estructura temporal y del marcador entre hombres y mujeres. Con respecto a la ronda de juego, se observaron valores significativamente más altos en duración de set y número de juegos a partir de las semifinales. Estos datos pueden ser de utilidad a entrenadores y jugadores a la hora de diseñar estrategias para la disputa de estos puntos decisivos.The objective of this study was to analyze the influence of “no-ad scoring” rule on the temporal and outcome variables on professional World Padel Tour, depending on the gender and the tournament round. A total of 24 matches corresponding to the final phase of the Marbella Master 2019 (N = 12), which was played with advantages, and the Marbella Master 2020(N = 12), which were played with no-ad scoring, were analyzed. The variables analyzed were: gender, tournament round,set duration, number of games per set, number of break points, number of breaks made and equality of the set. Resultsshowed that the use of no-ad scoring in professional padel produced a significant increase in the number of breaks.Furthermore, although the duration of the set decreased slightly, the number of games per set increased, but thedifferences were not significant. No differences were found in any of the variables related to the temporal structure andoutcome between men and women. Regarding the tournament round, significantly higher values were observed in gameduration and number of games from the semifinals. These data can be useful to coaches and players when designingstrategies for the dispute of these deciding points.Sin financiaciónNo data JCR 2020No data SJR 20200.358 IDR (2019) C3, 24/44 Deport

Análisis del Saque en Pádel Profesional

El objetivo de este estudio fue analizar las estadísticas de saque en pádel profesional, en función del lado de la pista y el género de los jugadores, y su relación con la estrategia y el punto de oro. La muestra estuvo compuesta de 455 saques de un total de 8 partidos (4 masculinos y 4 femeninos) del torneo Máster Final del circuito oficial World Padel Tour 2020. Se registraron, a través de observación sistemática, variables relacionadas con el saque (número, dirección, lado de la pista y eficacia), con la estrategia (tradicional o australiana), y con el tipo de punto. Los resultados mostraron diferencias significativas en función del género y el lado de la pista. Las mujeres sacan más al centro de la pista que los hombres. En el lado derecho de la pista, los jugadores sacan más al centro de la pista cuando utilizan la estrategia australiana en comparación con el lado izquierdo. En el lado izquierdo se realizan un 15% más de saques a la pared lateral que en el derecho, sin tener en cuenta la estrategia al saque. En cuanto al tipo de punto, los jugadores al saque ganaron un 12% más de puntos cuando era punto decisivo. Estos datos pueden servir de referencia a jugadores de pádel y entrenadores en el diseño de estrategias durante el partido y de sesiones de entrenamiento específicas adaptadas a las demandas de la competición.This study aimed to analyse serve statistics in elite padel players regarding court side and gender, and its relation to strategy and golden point. The sample contained 445 serves from 8 matches (4 male and 4 female) of the 2020 Masters Finals World Padel Tour. Variables related to serve (number, direction, court side and effectiveness), with the strategy (traditional or Australian) and with golden point were registered though systematic observation. Results showed differences according to gender and court side were found. Female players serve more to the center of the court (“T”) than men. In right side of the court, players serve more to the “T” when they use Australian strategy, comparing to left side. 15% more serves to the side wall are realized on the left side than the right, regardless of the serve strategy. Regarding golden point, the service players won 12% more point than when it was not a decisive point. Such knowledge may constitute a useful guide in the design of appropriate game strategies and specific-training session based on actual competition contextSin financiaciónNo data JCR 2021No data SJR 20210.321 IDR (2020) C3, 25/43 Deport

Relationship between Ball Impact Point, Type of Stroke and Shot Direction in High-Performance Padel

This study aimed to analyze the relationship between ball impact point, type of stroke, and shot direction in high-performance padel. A total of 8363 strokes from nine matches of three national tournaments involving a total of 24 male players were subjected to systematic observation. The variables analyzed were type of stroke, shot direction, and ball impact. A descriptive analysis was conducted for each study variable, with a comparison of the variables performed using Pearson’s Chi-Square test, column proportions determined using a Z test according to Bonferroni (p < 0.05), an association established by corrected standardized residuals, and an effect size calculated using Crammer’s V. The results showed that the most-used stroke types were volleys, serves, groundstrokes, and backwall shots (67.6%). The cross-court direction stood out over down-the-line and inside-out directions. Finally, almost two-thirds of the impact point locations were forward. In addition, the type of stroke determined shot direction and ball impact location. Moreover, the ball’s impact location significantly determined shot direction. In conclusion, these results suggest that the ball impact location and the type of stroke provide information from which padel shot direction can be anticipated. Such knowledge may constitute a very important factor affecting performance and success among padel players