Sport TK-Revista Euroamericana de Ciencias del Deporte最新文献

{"title":"Análisis de juego del principio de finalización en un equipo de fútbol de categoría infantil","authors":"Pablo López Caballero, W. Onetti-Onetti, Jesús Vicente Giménez de los Galanes Aguirre, A. Castillo-Rodríguez","doi":"10.6018/sportk.568141","DOIUrl":"https://doi.org/10.6018/sportk.568141","url":null,"abstract":"Children who play soccer in development age practice this sport to have fun, but in addition, they learn specific skills such as throwing a goal, which is the technique developed to score a goal. The objective of this study is to analyze the completion actions through throws in a high-level soccer team of the Children's category through observational educational methodology to locate problems in the game. They have obtained 20 high-level soccer players from the city of Granada. Basic descriptive statistics have been carried out. As a result, evidence has been obtained on the finishing actions that have not obtained a good sports performance such as the number of previous passes, defensive players involved, among other influential factors in the game. As a conclusion, a basic observation tool has been designed for the detection of real game problems, specifically, for those that end in shots on goal. The results allow children of development age to know relevant information on aspects of improvement and put it into practice with games using the problem-solving teaching methodology.\u0000 Los niños que juegan al fútbol en edad de desarrollo practican este deporte para divertirse, pero además, aprenden habilidades específicas como lanzar a portería que es la técnica desarrollada para marcar gol. El objetivo de este estudio es analizar las acciones de finalización a través de lanzamientos en un equipo de fútbol de alto nivel de categoría Infantil a través de metodología educativa observacional para localizar problemas en el juego. Han participado 20 jugadores de fútbol de alto nivel de la ciudad de Granada. Se ha realizado estadística básica descriptiva. Como resultados, se han obtenido evidencias sobre las acciones de finalización que no han obtenido un buen rendimiento deportivo como el número de pases previos, jugadores defensivos implicados, entre otros factores influyentes en el juego. Como conclusión, se ha diseñado una herramienta básica de observación para la detección de problemas reales de juego, concretamente, para aquellas que finalizan en lanzamientos a portería. Los resultados permiten a los niños en edad de desarrollo conocer información relevante sobre aspectos de mejora y llevarlos a la práctica con juegos utilizando la metodología de enseñanza de resolución de problemas.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"17 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78014860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of motivational climate and social interactions in physical education classes in secondary school","authors":"María del Carmen Flores Piñero, Pedro Ángel Valdivia Moral, Juan González Hernández","doi":"10.6018/sportk.556261","DOIUrl":"https://doi.org/10.6018/sportk.556261","url":null,"abstract":"The motivational climate refers to the set of signals from the PE class environment, which can be implicating the ego or the task. The objective of this research is to know the motivational climate and its elements such as approach, avoidance, ego and task, prosocial behaviors and aggressive behaviors of high school students in PE classes. This study has been carried out with a cross-sectional and intentional methodology, in a sample of Compulsory Secondary Education students (N=84) in educational centers in Andalucia and the Canary Islands. The results concluded that the motivational climate generated by the PE teacher and that students may or may not perceive in their classes, has a definite tendency towards Approach Motivational Climate and Avoidance Motivational Climate, both with 40.5%. The results also confirm that the students present prosocial behaviors and do not present aggressive behaviours.\u0000 El clima motivacional, se refiere al conjunto de conjunto de señales del entorno de la clase de EF, que pueden ser implicante al ego o a la tarea. El objetivo de esta investigación es conocer el clima motivacional y los elementos de éste como son, aproximación, evitación, ego y tarea, las conductas prosociales y conductas agresivas de los estudiantes de secundaria en las clases de EF. El presente estudio se ha llevado a cabo con una metodología de carácter transversal e intencional, en una muestra de estudiantes de Educación Secundaria Obligatoria (N = 84) en centros educativos de Andalucía y Canarias. Los resultados concluyeron, que el clima motivacional que genera el profesor de EF y que los estudiantes pueden percibir o no en sus clases, tiene una tendencia definida hacia Clima Motivacional Aproximación y Clima Motivacional Evitación, además, el alumnado presenta conductas prosociales y no presenta conductas agresivas.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"39 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77430436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intenciones futuras de los residentes sobre la celebración la Fórmula E en Santiago de Chile","authors":"Daniel Duclos-Bastías, D. Parra-Camacho, Frano Giakoni-Ramírez, Maira Ulloa-Hernández, Juan Antonio Sánchez Sáez","doi":"10.6018/sportk.497831","DOIUrl":"https://doi.org/10.6018/sportk.497831","url":null,"abstract":"The social impact of sporting events has been analysed mainly through residents' perceptions. The aim of this study was to find out residents' future intentions about the celebration of the 2018 Formula E Grand Prix of Santiago de Chile. For the selection of the sample (n=414 residents) the non-probability purposive sampling method was used with a confidence interval of 95%. The instrument used was an online questionnaire with a Likert scale (five-point scale). The results offered values close to four, which would indicate a positive trend in the residents' intentions. On the other hand, the significant influence of various socio-demographic variables related to the celebration of the event was verified: age, sex, studies, ideology, occupation, family residence, support for the celebration, attendance and employment ties with the sector. The results of the study made it possible to establish a favourable social perception of the reception of the event, although with different levels depending on the social group and its link to the event.\u0000 El impacto social de los eventos deportivos se ha analizado principalmente a través de la percepción de los residentes. El objetivo de este estudio fue conocer las intenciones futuras de los residentes sobre la celebración del Gran Premio de Fórmula E de Santiago de Chile 2018. Para la selección de la muestra (n=414 residentes) se utilizó el método de muestreo intencional-no probabilístico con un intervalo de confianza del 95%. El instrumento empleado fue un cuestionario on-line con una escala de respuesta Likert de 5 niveles. Los resultados ofrecieron valores cercanos a cuatro, que indicaría una tendencia positiva en las intenciones de los residentes. Por otro lado, se comprobó la influencia significativa de diversas variables sociodemográficas relacionadas con la celebración del evento: edad, sexo, estudios, ideología, ocupación, residencia familiar, respaldo a la celebración, asistencia y vinculación laboral con el sector. Los resultados del trabajo permitieron establecer una percepción social favorable sobre la acogida del evento, aunque con niveles diferentes según el grupo social y su vinculación con el evento.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"28 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79251029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efectividad de la suplementación nutricional con polifenoles sobre el daño muscular y marcadores de estrés oxidativo en diferentes tipos de ejercicios físicos: Una revisión de la literatura.","authors":"Pedro Donadio, C. Muñóz, Francisca Flores-Lucero, Diego F. García-Díaz, Claudio Farías-Valenzuela, Esteban Quezada, Carlos Poblete-Aro","doi":"10.6018/sportk.550641","DOIUrl":"https://doi.org/10.6018/sportk.550641","url":null,"abstract":"During exercise, there is a redox imbalance that increases reactive oxygen species, generating oxidative stress that favors muscle damage, affecting physical and sports performance. Different antioxidant supplements have been used to optimize muscle recovery after physical exercise. However, the effects of various antioxidants have been counterproductive, since the reactive oxygen species generated by exercise are necessary for muscle adaptation and their reduction prevents correct intracellular signaling and consequently the adaptation of skeletal muscle to exercise. Polyphenols are a type of antioxidant that are present in various fruits and herb extracts that have different characteristics depending on their structure and composition, some presenting a cell signaling pathway similar to exercise, generating different stimuli at the skeletal muscle level, being able to reduce the oxidative damage generated by exercise and even being able to enhance its effects. The aim of this literature review is to describe the effect of various polyphenols on muscle damage and biomarkers of oxidative stress on different forms of physical exercise and sports in adults.\u0000 Durante la realización de ejercicio, existe un desbalance redox que aumenta las especies reactivas de oxígeno generando un estrés oxidativo que favorece el daño muscular incidiendo en el rendimiento físico y deportivo. Diferentes suplementos antioxidantes han sido utilizados para optimizar la recuperación muscular posterior a la realización de ejercicio físico. Sin embargo, los efectos de diversos antioxidantes han sido contraproducentes, ya que las especies reactivas de oxígeno generadas por el ejercicio son necesarias para la adaptación muscular y la disminución de éstas, impide la correcta señalización intracelular y con esto, la adaptación del músculo esquelético frente al ejercicio físico. Los polifenoles son un tipo de antioxidantes que están presentes en diversos frutos y extractos de hierbas que poseen diversas características dependiendo de su estructura y composición, presentando algunos una ruta de señalización celular similar al ejercicio físico, generando diferentes estímulos a nivel del músculo esquelético, pudiendo reducir el daño oxidativo generado por el ejercicio e incluso, pudiendo potenciar sus efectos. El objetivo de la presente revisión a la literatura es determinar y describir el efecto de diversos polifenoles en el daño muscular y marcadores de estrés oxidativo posterior a diferentes modalidades de ejercicio físico y deportes en adultos.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"47 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86023302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"La Competición en la Iniciación al Balonmano: Análisis del Enfoque Pedagógico en América Latina","authors":"Claudio Hinojosa-Torres, S. Espoz-Lazo, Diego Soto-García, J. P. Zavala-Crichton, C. Farías-Valenzuela","doi":"10.6018/sportk.550531","DOIUrl":"https://doi.org/10.6018/sportk.550531","url":null,"abstract":"In the handball initiation, different elements are involved to train all the participant children, in order to develop their psychomotricity to solve different tasks that the game presents to them. For this, the competition is a space where the players can put into practice the learning they have developed. However, in Latin America, the structure and focus of the competition do not necessarily allow this to happen. From this perspective, the objective of this study is to understand how the pedagogical approach or the lack of it regarding competition impacts the learning processes of children who are beginners in handball in Latin America. Qualitative research with a phenomenological design was used. As inclusion criteria, the participants were required to be: a) physical education teachers; b) to be linked to the initiation stages of Handball; c) a minimum of 5 years of experience working in Latin America. As result, the value of competition to generate integration of learning in players and a progressive approach to game situations is highlighted. Therefore, it is concluded that any training action in the initiation to sport must be contextualized as a space rich in learning, so the competition must also be.\u0000 En la iniciación al balonmano intervienen elementos que buscan capacitar psicomotrizmente a todos los niños participantes para resolver diferentes tareas que presenta el juego. Para ello, la competición es un espacio donde los jugadores pueden poner en práctica los aprendizajes desarrollados. Sin embargo, en Latinoamérica, la estructura y el enfoque de la competencia no necesariamente permite que esto suceda. Desde esa perspectiva, el objetivo del presente estudio es el comprender como el enfoque pedagógico o la inexistencia de este respecto a la competencia impacta los procesos de aprendizaje de los niños iniciantes en balonmano en Latinoamérica. Se utilizó la investigación cualitativa con un diseño fenomenológico. Como criterios de inclusión se exigió que los participantes sean: a) profesores de educación física; b) que estén vinculados a las etapas de iniciación al Balonmano (de benjamín a mini); c) mínimo 5 años de experiencia trabajando en Latinoamérica. Como resultados se destaca el valor que tiene la competición para generar integración de aprendizajes en los jugadores y un acercamiento progresivo a las situaciones del juego. Por lo tanto, se concluye que toda acción formativa en la iniciación al deporte debe estar contextualizada como un espacio rico en aprendizajes, por lo que la competencia también lo debe ser.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"78 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84078689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Neuromuscular Profile of Knee Extensor and Flexor Muscles in Professional Soccer Players in The Saudi Premier League","authors":"A. Alhowimel, Faris A. Alodaibi, Yaaqoub Khayat, H. Alsobayel, O. Alkassabi","doi":"10.6018/sportk.489321","DOIUrl":"https://doi.org/10.6018/sportk.489321","url":null,"abstract":"Purpose: The neuromuscular system of soccer players is a key factor in their competitive performance, as it determines a player's immediate force response, reactivity and running speed during matches. The neuromuscular system has recently begun to be analyzed by tensiomyography (TMG). This study's primary aim was to generate normative data of the mechanical and neuromuscular profile for the knee extensor and flexor muscles.\u0000Method: This study used a cross-sectional study of 83 professional soccer players from three Saudi Premier League teams at the start of the preseason period. TMG was used to measure the radial muscle belly displacement in the knee extensor and flexor muscles in both legs.\u0000Results: The results suggest that the highest degree of symmetry corresponded to the vastus medialis (83.7 ± 14.3%) and the lowest to the biceps femoris (76.1 ± 10.9%). No statistical difference was found between the dominant and non-dominant muscles, or between on-field player positions across all four tested muscles.\u0000Conclusion: The study presented normative data of a convenience sample of Saudi professional soccer players and observed that the highest asymmetry was seen in the vastus medialis and the lowest asymmetry in the biceps femoris.\u0000 Propósito: El sistema neuromuscular de los jugadores de fútbol es un factor clave en su desempeño competitivo, ya que determina la respuesta de fuerza inmediata de un jugador, la reactividad y la velocidad de carrera durante los partidos. Recientemente se ha comenzado a analizar el sistema neuromuscular mediante tensiomiografía (TMG). El objetivo principal de este estudio fue generar datos normativos del perfil mecánico y neuromuscular de los músculos extensores y flexores de la rodilla.\u0000Método: Este estudio utilizó un estudio transversal de 83 futbolistas profesionales de tres equipos de la Liga Premier de Arabia Saudita al comienzo del período de pretemporada. La TMG se utilizó para medir el desplazamiento del vientre del músculo radial en los músculos extensores y flexores de la rodilla en ambas piernas.\u0000Resultados: Los resultados sugieren que el mayor grado de simetría correspondió al vasto medial (83,7 ± 14,3%) y el menor al bíceps femoral (76,1 ± 10,9%). No se encontraron diferencias estadísticas entre los músculos dominantes y no dominantes, o entre las posiciones del jugador en el campo en los cuatro músculos evaluados.\u0000Conclusión: El estudio presentó datos normativos de una muestra de conveniencia de futbolistas profesionales sauditas y observó que la mayor asimetría se observó en el vasto interno y la menor asimetría en el bíceps femoral.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"IA-20 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84601001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tipos de confiabilidad de la prueba de coordinación motora gruesa KTK para niños y adolescentes: Una revisión sistemática","authors":"Lucila Sanchez-Macedo, Rubén Vidal-Espinoza, J. Fuentes-Lopez, Eliseny Vargas-Ramos, Edward Gomez-Sanchez, Camilo Urra-Albornoz, R. GÓMEZ-CAMPOS, M. COSSIO-BOLAÑOS","doi":"10.6018/sportk.488851","DOIUrl":"https://doi.org/10.6018/sportk.488851","url":null,"abstract":"The Körperkoordinationstest für kinder (KTK) is of great use in the field of physical education, rehabilitation and sports science. Its application involves rigorous control in terms of reliability. This review verifies the types of reliability used. The Pubmed database was used, including studies from the period 2016 to 2020. The keywords used were: motor coordination, motor competence, KTK, children, reliability. Ten cross-sectional studies were selected. The age ranges and sample size ranged from 4 to 14 years old and includes a sample size from 64 to 3738. Of the 10 studies, 2 used three reliability criteria (stability, equivalence, and internal consistency), 3 used measures of stability, and 4 used measures of equivalence. The reported stability measures ranged from 0.60 to 0.99, equivalence measures from 0.75 to 0.99, and internal consistency measures from 0.95. In conclusion, it was verified that the cross-sectional studies evaluating the KTK tests were generally conducted on children of both genders and applied in age ranges from 4 to 14 years old as suggested by the original proposal and the types of reliability used varied among the studies from moderate to excellent.\u0000 La prueba Körperkoordinationstest für kinder (KTK) es de gran utilidad en el ámbito de la educación física, rehabilitación y en ciencias del deporte. Su aplicación implica el control riguroso en términos de confiabilidad. Esta revisión verifica los tipos de confiabilidad utilizados. Se utilizó la base de datos Pubmed, incluyendo estudios del periodo 2016 hasta 2020. Se utilizó las palabras clave: coordinación motora, competencia motora, KTK, niños, confiabilidad. Se seleccionó 10 estudios transversales. Los rangos de edad y el tamaño de la muestra oscilaron entre 4 hasta los 14 años e incluye un tamaño de muestra desde 64 hasta 3738. De los 10 estudios, 2 han utilizado tres criterios de confiabilidad (estabilidad, equivalencia y consistencia interna), 3 utilizaron medidas de estabilidad, y 4 de equivalencia. Las medidas de estabilidad reportadas varían de 0,60 a 0,99, las medidas de equivalencia desde 0,75 a 0,99 y por medio de consistencia interna 0,95. En conclusión, se verificó que los estudios trasversales que evalúan las pruebas de KTK fueron realizadas por lo general en niños de ambos géneros y aplicados en rangos de edad desde los 4 hasta los 14 años como lo sugiere la propuesta original y los tipos de confiabilidad utilizados variaron entre los estudios desde moderado hasta excelente.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"436 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91025228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strength training in youth soccer players: towards an optimal relationship between load magnitude and performance enhancement","authors":"Adrián Magallanes, Andres Parodi, Carlos A Magallanes, Andrés González-Ramírez","doi":"10.6018/sportk.536181","DOIUrl":"https://doi.org/10.6018/sportk.536181","url":null,"abstract":"In soccer, sprinting speed and vertical jump are critical skills to achieve high performance. Controversy exists about which type of training is most appropriate to improve these skills in youth players with no previous experience in programmed strength training. The aim of this study was to evaluate the efficacy and efficiency of a 16-week programme of resistance (weight) and plyometric training on sprinting and vertical and horizontal jumping in male youth soccer players. The study involved 18 soccer players, 14.1 ± 0.3 years old, with no previous experience in programmed strength training. They performed a combined cycle of resistance and plyometric training on different days, twice a week, respectively. Before and after the experimental intervention, the athletes were tested in countermovement vertical jump, bipodal horizontal jump, unipodal horizontal jump and 30 m linear sprint. After the intervention, significant improvements were observed in all the variables analyzed (p ≤ 0.05). Given that the relationship between the improvement in performance and the magnitude of the loads applied was shown to be superior to other similar interventions, it is possible to conclude that this type of training programme is both effective and efficient in the population studied.\u0000 En fútbol, el sprint y el salto vertical son habilidades básicas para alcanzar el alto rendimiento. Existe controversia sobre qué tipo de entrenamiento es el más apropiado para desarrollar estas habilidades en futbolistas jóvenes sin experiencia previa con programas de entrenamiento de fuerza. El objetivo fue evaluar la eficacia y la eficiencia de un programa de 16 semanas de entrenamiento de fuerza con cargas y pliométrico sobre las carreras de velocidad y saltos verticales y horizontales en jugadores de fútbol juveniles masculinos. Participaron 18 futbolistas, de 14,1 ± 0,3 años, sin experiencia previa en entrenamiento de fuerza programado. Realizaron un ciclo combinado de entrenamiento de fuerza y pliométrico en días diferentes, dos veces por semana, respectivamente. Antes y después de la intervención experimental, los atletas fueron evaluados en salto vertical con contramovimiento, salto horizontal bipodal, salto horizontal unipodal y sprint lineal de 30 m. Se observaron mejoras significativas en todas las variables analizadas (p ≤ 0,05). Dado que la relación entre la mejora en el rendimiento y la magnitud de las cargas aplicadas se mostró superior a otras intervenciones similares, es posible concluir que este tipo de programa de entrenamiento es efectivo y eficiente en la población estudiada.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"45 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85356572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"¿Cómo afecta el ejercicio físico con fines de salud o el deporte recreativo a la aurícula izquierda? Meta-análisis de estudios observacionales y experimentales.","authors":"Lucia Florio, Santiago Rivoir","doi":"10.6018/sportk.535001","DOIUrl":"https://doi.org/10.6018/sportk.535001","url":null,"abstract":"Introduction: Physical exercise affects the morphology and function of the left atrium. Elite athletes have increased volume without increasing stiffness. The effect of exercise on the atria of the general population is less well known.\u0000Objective: To evaluate the effect of aerobic exercise on the anatomy and function of the left atrium. Main objective: compare left atrial volume indexed to body surface area; secondaries: to compare ejection fraction and left atrial peak longitudinal strain, E/e´ ratio and new atrial fibrillation in a population that practices aerobic exercise for at least 4 weeks vs non-active.\u0000Method: Meta-analysis of observational or experimental studies. Excluded: subjects with baseline atrial fibrillation, non-aerobic exercise; elite/professional athletes. Keywords: “physical exercise AND left atrial function”, until 2/21/2022 in Pubmed, Scielo, clinicaltrials.gov and hand-search.\u0000Results: Eleven studies included in main outcome; 789 subjects, median age 52 years; female sex 24%. Main outcome (only statistically significant): left atrial index volume 2.65 ml/m2 ˃ in the exercise group (p=0.006). No results were found for incidence of atrial fibrillation.\u0000Conclusions: In the general population, aerobic exercise favors dilation of the left atrium. The relevance is doubtful due to contradictory and non-significant results on atrial stiffness.\u0000 Introducción: El ejercicio físico afecta la morfología y función de la aurícula izquierda. Atletas de élite tienen aumento del volumen sin aumentar la rigidez. El efecto del ejercicio en la aurícula de la población general es menos conocido.\u0000Objetivo: Evaluar el efecto del ejercicio aeróbico en anatomía y función de aurícula izquierda. Objetivo primario: comparar volumen de aurícula izquierda indexado a superficie corporal; secundarios: comparar fracción de eyección y strain longitudinal pico de aurícula izquierda, relación E/e ́ y nueva fibrilación auricular en población que practique ejercicio aeróbico por al menos 4 semanas vs no activos.\u0000Método: Meta-análisis de estudios observacionales o experimentales. Se excluyeron sujetos con fibrilación auricular basal, ejercicio no aeróbico; atletas de élite/profesionales. Palabras claves: “physical exercise AND left atrial function”, hasta 21/2/2022 en Pubmed, Scielo, clinicaltrials.gov y búsqueda manual.\u0000Resultados: Once estudios incluidos en objetivo primario; 789 sujetos, mediana edad 52 años; sexo femenino 24%. Resultado primario (único estadísticamente significativo): volumen indexado de aurícula izquierda 2,65 ml/m2 ˃ en grupo ejercicio (p=0,006). No se encontraron resultados para incidencia de fibrilación auricular.\u0000Conclusiones: En población general, el ejercicio aeróbico favorece la dilatación de la aurícula izquierda. La relevancia es dudosa por resultados contradictorios y no significativos sobre rigidez auricular.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"8 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76323243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of a high-intensity training program on BCL2 and BAX proteins and on sprint performance in young 100-m sprinters","authors":"Amer Mohammed Nasir, Humam Ismael Hussein, Ali Hussein Sagheer","doi":"10.6018/sportk.539251","DOIUrl":"https://doi.org/10.6018/sportk.539251","url":null,"abstract":"The biochemical and physiological processes in the athlete's body play a significant role in preserving internal and environmental balance via functional adaptations of the internal organs when training. The objective of this research was to prepare a high-intensity training program in BCI2 and BAX proteins for young 100m sprinters and also to identify the effect of this training program on the BCI2 and BAX proteins and on sprint performance. The researchers used the experimental method with a pre- and post-test for its suitability to the nature of the problem. The study sample included 6 young sprinters from Wasit Governorate. For data analysis, the researcher used the Statistical Package for the Social Sciences (SPSS). The results of the study showed statistically significant differences between the pre- and post-tests results in the BCI2 and BAX proteins and sprint achievement in 100 m, in favor of the post-test (p < 0.05). In conclusion, the training program had an effect on the low level of protein BCL2 and on the high level of protein BAX, and the training program was also effective in developing the achievement test in young 100-m sprinters.","PeriodicalId":44430,"journal":{"name":"Sport TK-Revista Euroamericana de Ciencias del Deporte","volume":"18 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75647859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}