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The physical quality of young male handball players is one of the essential factors that influence team performance. Balance and plyometric training refers to the work of muscle groups related to stabilization located at the meeting of the base of the trunk, spine, pelvis and lower extremities of the human bodyThirty male handball players (age: 16.6±0.5 years) were randomly allocated to either an experi-mental group (n=15) performing combined postural control and plyometric training twice weekly in addition to standard handball training, or a control group (n=15) maintaining regular training alone. Pre- and post-intervention assessments included vertical jump performance (squat jump, countermovement jump), horizontal jump ability (standing long jump), linear sprint speed (5m, 20m), change-of-direction capac-ity (modified T-test, Illinois modified test), repeated change-of-direction ability, and postural control (Stork Balance test, Y-Balance test). The experimental group demonstrated significantly greater improvements compared to controls across multi-ple performance domains. Specifically, superior adaptations were observed in the squat jump (p

Yanti, N., Selviani, I.., Supriatna, E.., Nofrizal, D.., Purba, P. H., Lubis, H. Y.., Nurbait, S.., Putro, D. E., Ismoko, A. P.., Wahyuni, D., Suryadi, D., & Suganda, M. A. (2024). Eficacia del entrenamiento pliométrico en balonmano: impacto en la potencia y velocidad de lanzamiento (Effectiveness of plyometric training in handball: impact on throwing power and speed)Effectiveness of plyometric training in handball: impact on throwing power and speed). Retos, 58, 643–649. https://doi.org/10.47197/retos.v58.103521 Retraction of the article by the editor of the journal. There has been several clear and conclusive proofs that there has been a manipulation of the authorship of the article. The accepted Word document was sent with the names of the authors that appeared in the “Corrections for the edition” message so that they could only make the orthographical corrections that were necessary. The corresponding author (or whoever hurt him) changed the authors of the aforementioned Word document that was sent to them, returning a document together with these corrections made with new authors, all without any express notification, without any document explaining the changes made accepted by all the authors and, of course, without express authorization from the journal Retos between both moments. With this fraudulent document the galleys were made and the article was definitively published, assigning it the corresponding DOI. Autores en el Word del artículo enviado a revisión: 9 Autores en el PDF publicado con los autores modificados: 12 Diferencia de los autores entre ambos momentos: +9 y -3 (Añadidos: Iit Selviani, Eka Supriatna, Dedi Nofrizal, Pangondian Hotliber Purba, Hafiz Yazid Lubis, Syifa Nurbait, Danang Endarto Putro, Anung Probo Ismoko, Dewi Wahyuni. Eliminado: Nugroho Susanto, Putra Sastaman B, Sandey Tantra Paramitha, Ardi Nusri, Dilli Dwi Kuswoyo, Ahmad Nasrulloh)

El objetivo de este estudio es describir el perfil demográfico, la formación y el desempeño profesional de los entrenadores de balonmano que actúan en Brasil. Se trata de uno estudio transversal, con diseño descriptivo y cuantitativo, con información de 226 entrenadores. La selección de estos participantes fue no aleatoria por conveniencia, en una red para ampliar contactos, con herramientas de investigación basadas en el método bola de nieve virtual. La información se obtuvo a través de cuestionario virtual autocompletado. Los datos fueron tabulados y analizados usando estadística descriptiva. Participaron entrenadores de todos los estados del país y del Distrito Federal. La edad media fue 40,8 años, siendo la mayoría hombres (81%). Casi la totalidad de los participantes tiene titulación en Educación Física o Deportes (89,8%). El principal lugar de actuación es la escuela, la mayoría trabaja en un solo lugar como entrenador y no tiene la modalidad como principal fuente de remuneración (63,3%). Aún así, casi la mitad de los participantes informaron actuar solos en su equipo, lo que denota escasez de personal técnico en la mayoría de los equipos. Los resultados de esta investigación contribuyen a una mejor comprensión del escenario de los entrenadores en Brasil, lo que permite destacar las necesidades y discrepancias, para que los datos atraigan la atención de los órganos competentes, con el objetivo principal de llevar a cabo acciones encaminadas a mejorar el desempeño de este campo, posibilitando ampliar el espacio de la mujer, valorizar financieramente a los profesionales y mejorar las condiciones estructurales.

The Handball game suffered a great evolution in terms of speed in the last ten years, is much faster and the number of ball possesses of each team is certainly higher. Through the constant interaction of the players, the study of their role and importance in an offensive action sequence could provide relevant information in match analysis. In this sense, the aim of the study was to verify the effect of the number of passes per ball possession according to the final action outcome and to identify the influence of each player in the team-passing network.

Dentro de los juegos de pelota a mano encontramos la pelota valenciana, un deporte tradicional valenciano (España). Éste se compone de varias modalidades, pudiéndose destacar la modalidad profesional del raspall. El objetivo del presente estudio fue analizar la estructura temporal y cuantificar los gestos técnicos de 18 pelotaris profesionales masculinos a lo largo de 8 partidas del ‘XXXVIII Liga de raspall 2021-2022’ utilizando el software LINCE PLUS. Los resultados indicaron que no existen diferencias significativas entre las duraciones de los juegos y los descansos entre juegos/puntos. La posición del jugador tuvo un efecto significativo sobre el tipo de golpeo realizado (X224= 1191.2; p <.001; j= .52) y sobre la mano de golpeo (X22= 17.94; p<.001; j=.064). El punter fue el jugador que realizó un menor porcentaje total de golpeos (17,83%) respecto al mitger (40,53%) y el resto (41,64%) pero con mayores porcentajes de golpeos ganadores (p<0,05). La mano de golpeo tuvo un efecto significativo sobre el resultado del golpeo (X23= 35.7; P <.001; j=.09) obteniéndose con la mano derecha mayor porcentaje de golpeos ganadores. El tipo de golpeo obtuvo un efecto significativo (X23= 35.7; P <.001; Phi =.09) sobre la consecuencia en el punto, observándose un mayor porcentaje en los golpeos ganadores con el gesto técnico de la Parada en relación con el resto de golpeos. En conclusión, el estudio nos aportada por primera vez en contexto real una información de gran valor para el entrenamiento específico del jugador de raspall. Palabras claves: juego tradicional valenciano, pilota, análisis de anotaciones, juego de pelota Abstract. Within the handball games we find the pelota valenciana, a traditional Valencian sport (Spain). This is made up of several modalities, which can be highlighted the professional modality of raspall. The objective of the present study was to analyze the temporal structure and quantify the technical gestures of 18 professional male players throughout 8 games of the ‘XXXVIII Liga de raspall 2021-2022’ using the LINCE PLUS software. The results indicated that there are no significant differences between the durations of the games and the breaks between games/points. The player's position had a significant effect on the type of hit made (X224= 1191.2; p <.001; j= .52) and on the hitting hand (X22= 17.94; p<.001; j=.064) . The punter (pointer) was the player who made a lower total percentage of shots (17.83%) compared to the mitger (medium) (40.53%) and the resto (returner) (41.64%) but with higher percentages of winning shots (p<0.05 ). The hitting hand had a significant effect on the result of the hitting (X23= 35.7; P <.001; j=.09) obtaining a higher percentage of winning hits with the right hand. The type of hit had a significant effect (X23= 35.7; P <.001; j=.09) on the consequence in the point, observing a higher percentage in the winning hits with the technical gesture of the Parada in relation to the rest. In conclusion, the study provided us, for the first time in a real context, with information of great value for the specific training of the raspall player. Keywords: valencian game, one wall, notational analysis, player, tactical  

The full, correct author byline and affiliations are as follows: Jörg Schorer1,3, Nick Wattie2, Joseph R. Baker21 Institute of Sport and Exercise Sciences, University of Muenster, Münster, Germany, 2 School of Kinesiology and Health Science, York University, Toronto, Canada, 3 Institute for Sport Science, University of Oldenburg, Oldenburg, Germany Citation: Schorer J, Wattie N, Baker JR (2013) Correction: A New Dimension to Relative Age Effects: Constant Year Effects in German Youth Handball.

IntroductionThis study investigated whether playing two or more matches less than 72 hours apart was associated with an increase in young handball players’ knee injury rates the following week compared with playing one or no matches.Materials and Methods731 Danish handball players aged 11–17 years (47% boys) reported weekly on handball exposure (match and training hours) and any new handball related knee injury over 30 weeks using the Oslo Sports Trauma Research Center Health 2 questionnaire. Match congestion was categorized as: (Low) ≤1 match (reference group) or (High) ≥2 matches played within 72 hours, based on data from the Danish Handball database. Cox proportion hazard models were used to estimate (HRs) and 95% confidence intervals (95% CI) using calendar week as time scale and adjusting for weekly handball exposure, team gender, and previous knee injury.Results157 new knee injuries were reported in the weeks following 20.285 matches. Of these matches, 2.193 matches were played within a 72-hour interval. In the high congestion group, 24 new knee injuries occurred. High match congestion was associated with a 71% higher knee injury rate (HR=1.71 [95% CI; 1.23–2.40]) compared with those in the low congestion group with a longer recovery period between matches.ConclusionPlaying two or more matches within a 72-hour period increases the new knee injury rate the following week in young handball players. This suggests handball matches to be scheduled at least 72 hours apart to reduce knee injury risk in young players.

The present manuscript aims to review the movie Forever the moment, portraying the trajectory of the South Korean women's handball team in the Olympic Games of Athens-2004. At the conclusion, contrary to the usual feeling of frustration caused by the achievement of the silver medal in team sports, it was evidenced that the defeat, when associated to maximum effort and performance, also brings glory. Em traduçâo literal, \"Para sempre o momento\" (título da versāo norte-americana) e \"O melhor momento de nossas vidas\" (título original), trata-se de um filme do genero drama, baseado em eventos reais no entorno da final da competiçâo de handebol feminino nos Jogos Olímpicos de Atenas, em 2004, retratado sob a ótica da seleçâo da Coréia do Sul. Mas, independentemente das referidas características particulares, é um filme que merece ser assistido, pois a realidade retratada pode ser utilizada no ámbito educacional, fomentando debates em nivel de graduaçao e pós-graduaęao na área da Educaçao Física, sob o viés do espirito olímpico, da implementaçao de novos métodos de treinamento e da psicología esportiva, ao passo que permite a visualizaçao da trajetória dos atletas em suas esferas social e psíquica.

An understanding of physical demands during official competitions is essential to achieving the highest performance in handball. The aim of this systematic review was to summarise the available scientific evidence associated with physical demands during official competitions in elite handball according to playing positions, competition level and gender. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, 17 studies were selected after a systematic search and selection process of three digital databases: PubMed, Web of Science and Sport Discus. The quality of the selected studies was evaluated using the Strengthening the Reporting of Observational Studies in Epidemiology checklist; the average score was 18.47 points. The sample consisted of 1175 handball players, of whom 1042 were men (88.68%) and 133 were women (11.32%). The results show that an elite handball player covered on average 3664.4 ± 1121.6 m during a match. The average running pace was 84.8 ± 17.2 m∙min−1. The total distance covered was largely greater in national competitions (4506.7 ± 647.9 m) compared with international competitions (2190.3 ± 1950.5 m) (effect size (ES) = 1.2); however, the running pace did not present any significant difference between the international or national level (ES = 0.06). In regard to gender, the total distance covered was moderately greater in female competitions (4549.1 ± 758.6 m) compared with male competitions (3332.6 ± 1257.7 m) (ES = 0.9), and the running pace was largely greater in female competitions (110.5 ± 7.2 m∙min−1) compared with male competitions (78.4 ± 19.7 m∙min−1) (ES = 1.6). In relation to playing position, backs and wings covered a moderately greater total distance (ES = 0.7 and 0.6) and slightly more meters per minute (ES = 0.4 and 0.2) than pivots. Moreover, the technical activity profile differed between playing positions. Backs performed moderately more throws than pivots and wings (ES = 1.2 and 0.9), pivots exhibited largely more body contact than backs and wings, and wings performed moderately more fast breaks (6.7 ± 3.0) than backs (2.2 ± 2.3) (ES = 1.8). Therefore, this research study provides practical applications for handball coaches and strength and conditioning professionals with respect to designing and implementing more individualised training programmes to maximise performance and reduce injury risk.