Pedagogical control scales of vertical jumping performance in untrained adolescents (13-16 years): research by strata.

Background: A scale is used to establish performance ranges in different sciences, it being necessary to design specialized biological and pedagogical indicators in physical activity, sport and health. Objective: To design a scale for the pedagogical control of the vertical jumping ability in untrained adolescents (13-16 years), stratifying the sample by age range, ethnicity, urban and rural area, socioeconomic level, and gender. Methods: A representative sample of the Ecuadorian population (n = 3,705) is studied, classifying it into the aforementioned strata, controlling the vertical jump by ISAK I and II level experts, applying the Sargent Test to measure vertical jumps on a multi-force wall, establishing scales with seven percentile levels, and making comparisons related to chronological age, gender, socioeconomic, and genetic indicators. Results: Significant differences in the vertical jumping performance were determined according to the category or age range (13-14 ≠ 15-16 years) and by gender (w = 0.000). Various levels of performance were determined, classifying the maximum level as talented in the female gender (≥40 cm; and ≥42 cm) and male gender (≥47 cm; and ≥57 cm) in the 13‒14 and 15‒16 years categories, respectively. Sampling comparisons by geographical area only determined significant differences in the male gender, with the jumping ability being higher in urban areas (13‒14 years: w = 0.046; 15‒16 years: w = 0.013). The comparison by ethnic groups showed significant differences (k = 0.030), favoring the Afro-Ecuadorian ethnic group in both genders, while there are significant differences by socioeconomic level, especially between the middle and lower classes. Conclusions: The present research solves the lack of a tool for making correct didactic decisions related to the vertical jumping ability, taking into account various important stratified indicators. The complementary conclusions show significant differences according to the category stratum or age range, the gender stratum, and the ethnic stratum in females and males, where the best average rank favored the Afro-Ecuadorian ethnic group in both genders. There are significant differences in the geographical area stratum in the male gender, and differences in the socioeconomic stratum in favor of the upper and middle classes.

Analysing the Influence of Speed and Jumping Performance Metrics on the Percentage Change of Direction Deficit in Adolescent Female Soccer Players.

Studies show that although female soccer players often have shorter change of direction (COD) deficits than males, indicating different biomechanical profiles, there is a lack of research on the impact of physical metrics on COD performance in females. The purpose of this work was to analyse whether performance metrics based on speed and jumping could explain the variation in %CODD in young female soccer players. Thirty-three highly trained adolescent female soccer players with an age of 16 ± 0.95 years, a body mass of 55.7 ± 7.22 kg, and a height of 160.4 ± 5.22 cm performed COD180 tests, 10 m and 30 m sprint tests, single-leg countermovement, and horizontal jumps. Acceleration in the first 10 m of a sprint was identified as a significant predictor of COD180 performance (R2 = 28%), (R2 = 50%), (p < 0.01), indicating that early sprint performance may largely determine an individual's ability to change direction. However, no predictors were found for %CODD. Significant correlations were observed between COD180 performance and %CODD, acceleration, linear speed, and horizontal jump performance (r = -0.59 to 0.70; p < 0.05). The study suggests that specific physical performance metrics, particularly early acceleration, are crucial for enhancing COD skills in female soccer players, emphasizing the need for targeted training interventions.

Effects of a neuromuscular training program on the performance and inter-limb asymmetries in highly trained junior male tennis players.

Background: The objective of this study was to assess the effectiveness of neuromuscular training on the performance of highly trainer junior tennis players. Methods: Twelve male tennis players (age: 13.4 ± 0.36 years; weight: 50.2 ± 6.29 kg; height: 163 ± 4.41 cm) participated and were randomly divided into two groups. The experimental group (EG) performed neuromuscular training that included exercises for speed, strength, throws, agility, jumps and coordination twice a week for a duration of 10 weeks. Performance was evaluated using various variables, including bilateral and unilateral countermovement jump, 30 cm drop jump and horizontal jump, 505 change of direction test conducted with both the right and left legs, 20-m sprint, and overhead 3 kg medicine ball throw. Asymmetries were also evaluated during the unilateral tests. The impact of the training was assessed through the utilization of ANCOVA tests and effect size measurements. Results: The results indicated a significant enhancement in the EG, specifically in bilateral vertical jump and horizontal jump, as well as explosive strength and speed. Conversely, the control group (CG) did not display similar advancements. Furthermore, there was no increase in asymmetries. Conclusion: This suggests that the implementation of a neuromuscular training program could prove to be an effective approach in enhancing explosive power in the lower limbs among young competitive tennis players. Finally, this training program could contribute to the enhancement of their physical attributes in lower body of young tennis players.

Importancia del VO2máx y la capacidad de recuperación de los futbolistas

El consumo máximo de oxígeno se considera un indicador directamente relacionado con la resistencia aeróbica, por lo que dicha capacidad se hace determinante en el rendimiento del futbolista. Conocer los criterios teóricos nacionales que sustentaron la importancia del VO2máx en la capacidad de recuperación en el fútbol constituyó un paso previo hacia conformar estrategias prospectivas de intervención directa para la toma de decisiones. En tal sentido, se planteó como objetivo de la investigación determinar, por consulta de especialistas, los criterios existentes de la importancia del VO2máx en la capacidad de recuperación de los futbolistas. La investigación fue descriptiva-correlacional de orientación exploratoria; se encuestaron a 13 especialistas que emitieron criterios sobre cinco indicadores. La importancia de la resistencia aeróbica en el entrenamiento del fútbol obtuvo un puntaje de (X4.62) y en relación al resto de las capacidades físicas aplicadas al fútbol un (X3.23); la importancia del VO2máx en el proceso de dirección un (X4.46); la correlación entre VO2máx y la recuperación un (X4.54) y la necesidad de perfeccionar la resistencia aeróbica en el fútbol ecuatoriano un (X4). El índice de concordancia entre especialistas obtuvo un nivel aceptable (w=0.527). Todos los indicadores de análisis obtuvieron una cualificación entre alta y muy alta, por lo que la investigación resaltó la importancia teórica brindada por los especialistas sobre el consumo máximo de oxígeno como indicador directamente relacionado con la resistencia aeróbica y el vínculo entre este y la capacidad de recuperación de los futbolistas.

SÍNTESE O consumo máximo de oxigênio é considerado um indicador diretamente relacionado à resistência aeróbica, tornando esta capacidade um fator determinante no desempenho de um jogador de futebol. Conhecer os critérios teóricos nacionais que sustentavam a importância do VO2max na capacidade de recuperação no futebol foi um passo anterior para a formação de estratégias prospectivas de intervenção direta para a tomada de decisões. Neste sentido, o objetivo da pesquisa foi determinar, consultando especialistas, os critérios existentes sobre a importância do VO2max na capacidade de recuperação dos jogadores de futebol. A pesquisa foi descritivo-correlacional com uma orientação exploratória; 13 especialistas foram pesquisados e deram critérios sobre cinco indicadores. A importância da resistência aeróbica no treinamento de futebol obteve uma pontuação de (X4,62) e em relação ao resto das capacidades físicas aplicadas ao futebol a (X3,23); a importância do VO2max no processo de gerenciamento a (X4,46); a correlação entre VO2max e recuperação a (X4,54) e a necessidade de aperfeiçoar a resistência aeróbica no futebol equatoriano a (X4). O índice de concordância entre especialistas obteve um nível aceitável (w=0,527). Todos os indicadores de análise obtiveram uma qualificação entre alto e muito alto, portanto a pesquisa destacou a importância teórica dada pelos especialistas sobre o consumo máximo de oxigênio como um indicador diretamente relacionado à resistência aeróbica e a ligação entre esta e a capacidade de recuperação dos jogadores de futebol.

The maximum oxygen consumption is considered an indicator directly related to aerobic endurance, so this capacity becomes decisive in the performance of the soccer player. Knowing the national theoretical criteria that supported the importance of VO2max in the recovery capacity in soccer was a previous step towards shaping prospective strategies of direct intervention for decision making. In this sense, the objective of the research was to determine, by consulting specialists, the existing criteria of the importance of VO2max in the recovery capacity of soccer players. The research was descriptive-correlational with an exploratory orientation; 13 specialists were surveyed who issued criteria on five indicators. The importance of aerobic endurance in soccer training obtained a score of (X 4.62) and in relation to the rest of the physical capacities applied to soccer a (X3.23); the importance of VO2max in the direction process a X 4.46); the correlation between VO2max and recovery a (X 4.54) and the need to improve aerobic endurance in Ecuadorian soccer a (X 4). The concordance index between specialists obtained an acceptable level (w=0.527). All the analysis indicators obtained a qualification between high and very high, so the research highlighted the theoretical importance provided by specialists on maximum oxygen consumption as an indicator directly related to aerobic endurance and the link between this and the ability to recovery of footballers.

Gross Motor Development in Preschoolers through Conductivist and Constructivist Physical Recreational Activities: Comparative Research.

Developing gross motor function implies strengthening the basic body position and the balance associated with posture and mobility, for which different teaching models and psycho-pedagogical interventions are applied. OBJECTIVE: to develop gross motor function in male preschoolers through physical recreational activities based on conductivist (Group 1) and constructivist (Group 2) teaching and determine the best teaching paradigm. Two basic skills were studied in two homogeneous independent samples (walking: w = 0.641; running: w = 0.556), selecting 25 children for each group (3-4 years) through the use of intentional sampling. The gross skills evaluation was based on norms established by the Education Ministry, including a mood assessment. RESULTS: each group improved their basic skills in the post-test (Group 1: W = 0.001; W = 0.001. Group 2: W = 0.046; W = 0.038), but the conductivist paradigm was superior (w = 0.033; w = 0.027). Group 1 presented better indicators in the motor evaluations "Acquired" and "In Process" than Group 2, and lower percentages in the "Initiated" evaluation than Group 2 in the abilities "walking" as well as "running", which were significantly different in the "Initiated" evaluation (p = 0.0469) for the walking ability, and significantly different in the "Initiated" and "Acquired" evaluations (p = 0.0469; p = 0.0341, respectively) for the running skill. CONCLUSIONS: The conductivist teaching model was superior in terms of gross motor function optimization.

Entrenamiento sistemático de defensa personal en la Escuela Superior Naval / Formação sistemática em autodefesa na Escola Secundária Naval / Systematic self-defense training at the Naval High School

RESUMEN La defensa personal en la Fuerza Naval es una de las competencias fundamentales del profesional militar, el perfeccionamiento del proceso de maestría en las artes marciales mixtas requiere de diagnósticos sistemáticos, evidencia alcances y limitaciones y, por ende, la toma de decisiones acertadas para mejorar el proceso. En tal sentido, se planteó como propósito de la investigación: diagnosticar necesidades en la defensa personal sistemática de la Escuela Superior Naval. La Investigación es exploratoria con enfoque descriptivo-explicativo y correlacional; se realiza selección bajo un muestreo intencional de 20 oficiales navales. Estos responden a encuestas cerradas que justificarán el diseño prospectivo de un proceso de intervención a futuro. La autoevaluación de los especialistas demuestra que el 40 % posee una calificación Buena en el dominio de técnicas de karate-do, boxeo y judo y el 30 % una calificación mala. Estos valores indican que son similares durante la aplicación correcta de técnicas de karate-do (45 %: bueno; 15 %: malo), boxeo (65 %: bueno; 0 %: malo) y judo (40 %: bueno; 25 %: malo), mientras que los indicadores pertinencia (4.30 puntos), factibilidad (3.40 puntos), prioridad (4.55 puntos) e integralidad. (4.40 puntos). Estos valores justificaron la necesidad de implementar un proceso de intervención para perfeccionar la defensa personal en marinos. En el estudio, prevalece una concordancia aceptable entre los especialistas (0.526). La consulta a especialistas muestra la necesidad de implementar un proceso de entrenamiento sistemático de defensa personal en la Escuela Superior Naval. Se presentan como positivos los indicadores de pertinencia, factibilidad, prioridad e integralidad, en el diseño de un proceso prospectivo para brindar superación profesional al personal naval ecuatoriano en el aspecto de la defensa personal.

RESUMO A autodefesa na Força Naval é uma das competências fundamentais do profissional militar. A melhoria do processo de domínio nas artes marciais mistas requer diagnósticos sistemáticos, provas de alcances e limitações e, portanto, a tomada de decisões corretas para melhorar o processo. Neste sentido, o objectivo da investigação era diagnosticar as necessidades em autodefesa sistemática na Escola Superior Naval. A investigação é exploratória com uma abordagem descritiva-explicativa e correlativa; foi selecionada uma amostra propositada de 20 oficiais navais. Responderam a inquéritos fechados que justificarão a concepção prospectiva de um futuro processo de intervenção. A auto avaliação dos especialistas mostra que 40% têm uma boa classificação no domínio do Karate-do, boxe e técnicas de judô e 30% uma má classificação. Estes valores indicam que são semelhantes durante a aplicação correta do Karate-do (45 %: bom; 15 %: mau), do boxe (65 %: bom; 0 %: mau) e do judô (40 %: bom; 25 %: mau) técnicas, enquanto que os indicadores relevância (4,30 pontos), viabilidade (3,40 pontos), prioridade (4,55 pontos) e abrangência (4,40 pontos). Estes valores justificaram a necessidade de implementar um processo de intervenção para melhorar a autodefesa dos marítimos. No estudo, prevalece um acordo aceitável entre os especialistas (0,526). A consulta com especialistas mostra a necessidade de implementar um processo sistemático de formação em autodefesa na Academia Naval. Os indicadores de relevância, viabilidade, prioridade e abrangência são apresentados como positivos na concepção de um processo prospectivo para proporcionar desenvolvimento profissional ao pessoal naval equatoriano na área da autodefesa.

ABSTRACT Self-defense in the Naval Force is one of the fundamental competencies of the military professional, the improvement of the mastery process in mixed martial arts requires systematic diagnoses, evidence of scope and limitations and, therefore, making the right decisions to improve the process. In this sense, it was proposed as the purpose of the research: to diagnose needs in the systematic self-defense of the Higher Naval School. The research is exploratory with a descriptive-explanatory and correlational approach; selection is made under an intentional sampling of 20 naval officers. These respond to closed surveys that will justify the prospective design of a future intervention process. The self-assessment of the specialists shows that 40% have a Good rating in mastering karate-do, boxing and judo techniques and 30 % a Bad rating. These values indicate that they are similar during the correct application of karate-do techniques (45 %: Good; 15 %: Bad), Boxing (65 %: Good; 0%: Bad) and Judo (40 %: Good; 25 %: Bad), while the indicators Relevance (4.30 points), Feasibility (3.40 points), Priority (4.55 points) and Comprehensiveness. (4.40 points). These values justified the need to implement an intervention process to improve self-defense in sailors. In the study, an acceptable concordance prevails among the specialists (0.526). Consultation with specialists shows the need to implement a systematic self-defense training process at the Naval High School. The indicators of relevance, feasibility, priority and comprehensiveness are presented as positive in the design of a prospective process to provide professional improvement to Ecuadorian naval personnel in the aspect of self-defense.

Preparación física para mujeres militares de la Fuerza Naval en período de poslactancia / Preparação física das mulheres militares da Força Naval no período pós-lactação / Physical preparation for military women of the Naval Force in post-lactation period

RESUMEN La preparación físico-militar incluye numerosos supuestos que regulan el apresto operacional del personal militar, establecen los estándares básicos para toda la vida activa. Dentro de las acciones de trabajo para mejorar o mantener la condición física, se deben tener presente las condiciones del militar, donde el entrenamiento del período poslactancia de las mujeres deben condicionarse a sus necesidades biológicas. En tal sentido, se planteó como propósito de la investigación implementar un plan de entrenamiento para mejorar la condición física de mujeres militares de la Fuerza Naval para el periodo de poslactancia. Bajo un muestreo intencional, se intervienen a siete mujeres (31-36 años) de la Fuerza Naval ecuatoriana, en proceso de lactancia, ellas son insertadas a un plan de ejercicios especializados para acondicionarlas físicamente. De aquí se genera un estudio en dos momentos de la preparación de su resistencia aeróbica, velocidad y potencia local muscular. Todas las pruebas de valoración presentaron un menor rendimiento medio en la primera valoración. Desde este resultado, se superan sus indicadores como parte del postest, test de velocidad: 17:56s-17:00s (p=0.018), test de Cooper: 16:38min-16:12min (p=0.712), Test de Abdominales: ≈36rep-≈41rep (p=0.000) y test de flexiones de codo: 25rep-30rep (p=0.000). Durante el proceso de intervención, no se presentaron lesiones ni otras dificultades que provoquen abandono del programa. El plan de intervención propuesto mejoró y acondicionó la preparación física en las mujeres militares de la Fuerza Naval ecuatoriana en estado de poslactancia; así mejoró significativamente las capacidades de velocidad y fuerza muscular local, lo cual acondicionó la capacidad de resistencia aeróbica.

RESUMO A preparação físico-militar inclui numerosos pressupostos que regulam a prontidão operacional do pessoal militar, estabelecem as normas básicas para toda a vida ativa. No âmbito das ações de trabalho para melhorar ou manter a condição física, devem ser tidas em conta as condições dos militares, onde a formação das mulheres no período pós-lactação deve ser condicionada às suas necessidades biológicas. Neste sentido, o objectivo da investigação era implementar um plano de formação para melhorar a condição física das mulheres militares na Força Naval para o período de pós-parto. Sob uma amostragem propositada, sete mulheres (31-36 anos) da Força Naval equatoriana, no processo de amamentação, foram envolvidas num plano de exercício especializado para as condicionar fisicamente. A partir disto, é gerado um estudo em dois momentos da preparação da sua resistência aeróbica, velocidade e potência muscular local. Todos os testes de avaliação mostraram um desempenho médio inferior na primeira avaliação. A partir deste resultado, os seus indicadores são excedidos como parte do teste de velocidade: 17:56s-17:00s (p=0,018), teste de Cooper: 16:38min-16:12min (p=0,712), teste abdominal: ≈36rep-≈41rep (p=0,000) e teste de flexão do cotovelo: 25rep-30rep (p=0,000). Durante o processo de intervenção, não houve feridos ou outras dificuldades que levassem ao abandono do programa. O plano de intervenção proposto melhorou e condicionou a preparação física das mulheres militares pós-lactação da Força Naval equatoriana; melhorou significativamente as capacidades de velocidade e força muscular local, o que condicionou a capacidade de resistência aeróbica.

ABSTRACT Physical-military preparation includes numerous assumptions that regulate the operational readiness of military personnel, establish the basic standards for all active life. Within the work actions to improve or maintain physical condition, the conditions of the military must be taken into account, where the training of the post- lactation period of women must be conditioned to their biological needs. In this sense, the purpose of the research was to implement a training plan to improve the physical condition of military women of the naval force for the post -lactation period. Under an intentional sampling, seven women (31-36 years old) of the Ecuadorian naval force, in the process of breastfeeding, are inserted into a specialized exercise plan to condition them physically. From here, a study is generated in two moments of the preparation of their aerobic endurance, speed and local muscle power. All the assessment tests presented a lower mean performance in the first assessment. From this result, their indicators are exceeded as part of the post -test, Speed Test: 17:56-17:00 (p=0.018), Cooper Test: 16:38-16:12 (p=0.712), Abdominal Test:≈ 36rep-≈ 41rep (p=0.000) and elbow flexion test: 25rep-30rep (p=0.000). During the intervention process, there were no injuries or other difficulties that caused abandonment of the program. The proposed intervention plan improved and conditioned the physical training of military women of the Ecuadorian naval force in a post -lactation state; thus, it significantly improved speed capabilities and local muscle strength, which conditioned aerobic endurance capacity.

Obesidad, intervención escolar, actividad física y estilos de vida saludable en niños españoles / Obesity, School Intervention; Physical Activity and Healthy Lifestyles in Spanish Children

Introducción: El sobrepeso y la obesidad en la infancia y la adolescencia se han incrementado a nivel mundial durante las últimas décadas. Este hecho se asocia, principalmente, con la falta de actividad física, hábitos de vida y comportamientos alimenticios poco saludables. Objetivo: Analizar la efectividad de diferentes estudios de intervención escolar llevados a cabo en España para prevenir y tratar la obesidad en niños y niñas. Métodos: Se realizó una estrategia de búsqueda electrónica utilizando las bases de datos PubMed, Medline y SPORTdiscus y los términos school-based intervention, Spain, healthy lifestyle, obesity prevention, physical activity y nutrition childhood obesity y children obesity. Se identificaron 124 artículos y solo 11 cumplieron los criterios de inclusión. Conclusiones: Las intervenciones realizadas por el entorno escolar no fueron eficaces o significativas para cambiar los indicadores antropométricos de los niños, niñas y adolescentes españoles. Sin embargo, las intervenciones escolares unidas a la implicación familiar, pueden ser eficaces para modificar cambios en los hábitos nutricionales, nivel de actividad física y hábitos de vida saludable en la etapa infantojuvenil, ya que son los principales determinantes de obesidad en la infancia. Por último, la consolidación de un adecuado estilo de vida en etapas tempranas puede prevenir la obesidad y sobrepeso en la adultez(AU)

Introduction: Overweight and obesity in childhood and adolescence have increased worldwide in recent decades. This fact is associated mainly with a lack of physical activity, unhealthy lifestyle habits and eating behaviors. Objective: To analyze the effectiveness of different school intervention studies carried out in Spain to prevent and treat obesity in boys and girls. Methods: An electronic search strategy was carried out using the PubMed, Medline and SPORTdiscus databases, under the terms school-based intervention, Spain, healthy lifestyle, obesity prevention, physical activity, nutrition, childhood obesity and children obesity. 124 articles were identified and only 11 met the inclusion criteria. Conclusions: The interventions carried out by school were not effective or significant to change the anthropometric indicators of Spanish children and adolescents. However, school interventions, together with family involvement, can be effective in modifying changes in nutritional habits, level of physical activity and healthy lifestyle habits in the infant-juvenile stage, since they are the main determinants of obesity in childhood. Finally, establishing an adequate lifestyle early can prevent obesity and overweight in adulthood(AU)

Variables del rendimiento de los bateadores del béisbol cubano utilizando el sensor Blast Motion Baseball / Variáveis do desempenho dos batedores do basebol cubano utilizando o Sensor de Basebol de Movimento de Explosão / Variables in the Cuban baseball batter's performance using the Blast Motion Baseball sensor

Resumen La introducción de las nuevas tecnologías en el béisbol ha optimizado los sistemas para el registro y análisis de información, tanto en el entrenamiento como en el juego, contribuyendo a un control más exacto del rendimiento de un jugador. En el presente trabajo, se aplica el sensor Blast Motion Baseball cuyo objetivo es identificar las variables significativamente influyentes en el rendimiento de los bateadores en el béisbol cubano. Se eligieron bateadores (N=24) pertenecientes a la Serie Nacional de béisbol LIX debido a que constituye el evento nacional de mayor nivel del béisbol cubano. La información fue registrada en prácticas de bateo, mientras el bateador ejecutaba la tarea de conectar bolas lanzadas por el entrenador de frente (front toss), por encima del brazo a una distancia de 30 pies y a una velocidad inferior a las 50 mph. Posteriormente, se compararon los resultados del Blast Motion Baseball con las estadísticas oficiales de la Serie Nacional de Béisbol LIX. Se demostró que los bateadores con mayor velocidad del bate, mayor velocidad máxima de las manos y mayor potencia lograron un mayor rendimiento ofensivo. Por tanto, conocer en tiempo real estas características del swing contribuyen a perfeccionar el proceso de entrenamiento y predecir el rendimiento deportivo de un bateador.

Resumo A introdução de novas tecnologias no basebol otimizou os sistemas de gravação e análise de informação, tanto no treino como no jogo, contribuindo para um controlo mais preciso do desempenho de um jogador. No presente trabalho, é aplicado o Sensor de basebol Blast Motion. O seu objetivo é identificar as variáveis que influenciam significativamente o desempenho dos batedores no basebol cubano. Os batedores (N=24) pertencentes à Série Nacional de basebol LIX foram escolhidos porque constitui o evento nacional de mais alto nível do basebol cubano. A informação foi registada durante o treino de batedores, enquanto o batedor executava a tarefa de ligar bolas lançadas pelo treinador a partir do lançamento frontal, sobre o braço a uma distância de 30 pés e a uma velocidade inferior a 50 mph. Os resultados do Blast Motion Baseball foram então comparados com as estatísticas oficiais da Série Nacional de Basebol LIX. Foi demonstrado que batedores com maiores velocidades de taco, maiores velocidades de mão superior, e mais potência alcançaram um maior desempenho ofensivo. Portanto, conhecer estas características do balanço em tempo real ajuda a refinar o processo de treino e a prever o desempenho atlético de um batedor.

Abstract The introduction of new technologies in baseball has optimized the systems for recording and analyzing information, both in training and in the game, contributing to a more accurate control of a player's performance. In this work, it is applied the Blast Motion Baseball sensor which objective is to identify the variables significantly influencing the performance of batters in Cuban baseball. There were chosen batters (N=24) belonging to the National Baseball Series LIX because it constitutes the national event of higher level in Cuban baseball. The information was recorded during batting practice, while the batter was performing the task of connecting balls thrown by the coach from the front toss, over the arm at a distance of 30 feet and at a speed of less than 50 mph. The results of Blast Motion Baseball were then compared with the official statistics of the LIX National Baseball Series. It was shown that batters with higher bat speed, higher top hand speed and more power achieved greater offensive performance. Therefore, knowing these characteristics of the swing in real time helps to perfect the training process and predict the sports performance of a batter.

La corrección-compensación en niños sordociegos con alteraciones motrices a través de actividades físicas adaptadas / Correction-compensation in the deafblind children with motor alterations through adapted physical activities

Introducción: La sordoceguera es una discapacidad doble que implica problemas en el campo auditivo y visual, provoca problemas comunicativos y motrices únicos. Por lo que es necesario trazar estrategias docente-educativas especiales y personalizadas. Objetivo: Proponer actividades físicas adaptadas como parte de la terapia ocupacional para la corrección-compensación de las alteraciones motrices presentadas en niños sordociegos que estudian en el Instituto Especial Mariana de Jesús. Métodos: La muestra estuvo conformada por 20 niños, entre los 6-10 años de edad con problemas visuales y auditivos parciales provocados por diferentes padecimientos. La investigación se inició con el diagnóstico realizado a 11 especialistas, que estaban implicados directamente en el proceso docente-educativo. Se delimitaron las variables de investigación antes de la implementación de la estrategia. Se diseñaron 10 juegos adaptados a las individualidades y necesidades de la muestra estudiada, y aplicados durante el curso docente 2016-2017. Resultados: Con la aplicación de las 7 pruebas motrices antes y después de implementada la mejora, se obtuvieron progresos significativos en las habilidades motrices de los sujetos, aumentando el porcentaje de evaluados de bien, según se demostró estadísticamente al calcular las proporciones para muestras relacionadas. Conclusiones: Las actividades físicas adaptadas, dentro de estrategias lúdicas como terapia ocupacional, permiten mejorar el trabajo correctivo-compensativo y las capacidades motrices de niños sordociegos. Estas estrategias deben desarrollarse bajo los principios de una ética humanista e inclusiva y sobre la base de una atención personalizada(AU)

Visual field, and causes unique communicative and motor problems. So, it is necessary to draw special and customised educational-teaching strategies. Objective: To propose adapted physical activities as part of the occupational therapy for the correction-compensation of motor alterations presented in deafblind children studying in Mariana de Jesus Special Institute. Methods: The sample consisted of 20 children in the ages from 6 to10 years old with visual and auditory problems caused by different diseases. The investigation began with a diagnosis to 11 specialists whom were directly involved in the educational process. The research variables were defined prior to the implementation of the strategy. There were designed ten games adapted to the individualities and needs of the sample studied, and those were used during the school year 2016-2017. Results: With the implementation of the 7 motor tests before and after the implementation of the improvement, significant breakthroughs in the motor skills of the subjects were achieved, and with it an increase in the percentage of subjects evaluated as well, as demonstrated statistically when calculating the proportions for related samples. Conclusions: The adapted physical activities, within playful strategies as occupational therapy, improve the corrective-compensative work and the motor abilities of deafblind children. These strategies should be developed under the principles of a humanist and inclusive ethics and on the basis of a personalized attention(AU)

What Do Olympic Shooters Think about Physical Training Factors and Their Performance?

BACKGROUND: Many aspects affect precision sports like shooting. Skills such as strength and balance are related to shooting performance and therefore, they should be trained. Thus, planned physical workouts can help to improve Olympic Shooting performance. The main objective of this study was to determine elite shooters' perspective about fitness trainings. METHODS: Eight elite international shooters were interviewed using a semi-structured script validated by an expert shooting committee. Their responses were transcribed and analyzed using qualitative methods. The following categories were obtained: fitness training importance on performance, fitness professional support, precompetitive fitness exercises' orientation and intensity, main motor abilities, recovery process, fitness evaluation and test and physical training influence on the psychological state. RESULTS: The results suggest that athletes consider physical training as a key factor in their performance. Shooters mainly train strength and endurance exercises, depending on the competitions schedule. However, no consensus exists regarding the professional in charge of fitness trainings, nor the recovery methods to minimize performance losses. In addition, general balance trainings or physical condition tests to evaluate the training progress do not seem to be used. CONCLUSION: We conclude that there should be greater control of fitness training and recovery processes in Olympic shooting.

Efectos de las plataformas vibratorias en la salud ósea en mujeres posmenopáusicas / Effects of Vibratory Platforms on Bone Health in Postmenopausal Women

Estudios recientes han sugerido que los estímulos mecánicos (vibraciones) de alta frecuencia y baja magnitud pueden ejercer un efecto positivo sobre la morfología ósea y beneficiar su cantidad y calidad. La plataforma vibratoria es una máquina popular que se introdujo en la última década como una nueva promesa contra el tratamiento de la osteoporosis. Actualmente, en el mundo hay más de 200 millones de mujeres posmenopáusicas que sufren osteoporosis. Esta enfermedad es una de las más comunes y costosas de la salud pública. El ejercicio físico complementado con el tratamiento vibratorio puede que sea considerado como una estrategia efectiva para la prevención y tratamiento de la osteoporosis posmenopáusica. Esta revisión ofrece una visión general de cuestiones significativas relacionadas con la terapia con la plataforma vibratoria para la prevención y tratamiento de la osteoporosis en mujeres postmenopáusicas. El objetivo de esta revisión ha sido conocer los últimos avances de entrenamiento con plataformas vibratorias para la mejoría de la masa ósea en mujeres posmenopáusicas. Existe una gran discrepancia respecto al uso de estas como tratamiento osteoporósico, uso de diferentes tipos de plataformas, distintas frecuencias, amplitud, aceleración o duración del tratamiento. La escasa literatura estableció que la plataforma vibratoria Galileo es la que más se utiliza en dicha población, pero se necesitan más intervenciones para concretar los beneficios y daños de este tratamiento en mujeres postmenopáusicas(AU)

Recent studies have suggested that mechanical stimuli (vibrations) of high frequency and low magnitude can exert a positive effect on bone morphology and benefit quantity and quality. The vibrating platform is a popular machine introduced in the last decade as a new promise against the treatment of osteoporosis. Currently, there are more than 200 million postmenopausal women in the world suffering from osteoporosis. This disease is one of the most common and expensive in public health. Physical exercise supplemented with vibrational treatment may be considered an effective strategy for the prevention and treatment of postmenopausal osteoporosis. This review offers an overview of significant issues related to therapy with the vibration platform for the prevention and treatment of osteoporosis in postmenopausal women. The objective of this review is to know the latest advances in vibratory platforms training for the improvement of bone mass in postmenopausal women. There is a great discrepancy regarding the use of vibratory platforms as osteoporosis treatment, the use of different types of platforms, different frequencies, amplitude, acceleration or duration of treatment. The limited literature established that Galileo vibration platform is the most used in this population, but more interventions are needed to grasp the benefits and harms of this treatment in postmenopausal women(AU)

Las propiedades mecánicas del accionar del cuerpo humano. Su manifestación en las técnicas del aikido / The mechanical properties of the human body actions. Its manifestation in aikido techniques

Los movimientos de las partes del cuerpo humano son desplazamientos en el espacio y el tiempo, que se ejecutan en muchas articulaciones simultánea y consecutivamente. Precisamente el Aikido se caracteriza por provocar la pérdida del equilibrio y el derribo de un oponente mediante el accionar sobre las articulaciones. Atendiendo a esto, se concibe este trabajo dirigido a ofrecer una oportuna explicación sobre el accionar de los diferentes miembros que componen el cuerpo humano y su incidencia en una correcta ejecución técnica en aikido. Cuestiones de gran interés como: las uniones de los miembros, las cadenas cinemáticas, los grados de libertad de los movimientos y las particularidades dinámicas de los movimientos humanos; así como aspectos distintivos del equilibrio, tanto estático como dinámico son tratados en el presente trabajo con adecuada sencillez y precisión.

The parts of the human body movements are movements in space and time, running in many joints simultaneously and consecutively. Aikido is precisely characterized by cause the loss of balance and the demolition of an opponent through the actions applied to the joints. Attending this is conceived this work aimed to offer a timely explanation of the actions of the different members that make up the human body and its impact in a proper technical execution in aikido. Issues of great interest such as: the joints of the limbs, kinematic chains, the degrees of freedom of movement and dynamic peculiarities of the human movements; as well as distinctive balance, both static and dynamic aspects are dealt with in the present work with appropriate simplicity and precision.

Los programas de actividad física para combatir la obesidad y el sobrepeso en adolescentes

La obesidad y el sobrepeso son dos de los problemas de salud más acuciantes en la sociedad actual, y están aumentando hasta niveles preocupantes en los adolescentes. La actividad física es una de las herramientas que se pueden utilizar para mejorar la situación. Diversos países han puesto en marcha programas, en los que la actividad física juega un papel primordial, con el objetivo de reducir el porcentaje de grasa corporal en los jóvenes. En este trabajo se realiza una revisión bibliográfica de los estudios que analizan esos programas.

Obesity and overweight are two of the most pressing health problems in today's society, and those are increasing to worrying levels in adolescents. Physical activity is one of the tools that can be used to improve the situation. Several countries have launched programs in which physical activity plays a key role, with the aim of reducing the percentage of body fat in young people. In this work, a bibliographic review of the studies that analyze these programs is carried out.

Análisis biomecánico en la marcha deportiva entre deportistas de iniciación y alto rendimiento / Biomechanical analysis in sports walk among beginners and high performance athletes

Introducción: La relación causa / efecto entre el embarazo y la enfermedad periodontal resulta muy contradictorio en la literatura. Algunos autores niegan que exista esta relación, mientras otros la afirman. Objetivo: Identificar la presencia de Enfermedad Periodontal en gestantes del primer y tercer trimestre, teniendo en cuenta la edad y la higiene bucal de las mismas. Métodos: La muestra estuvo integrada por 106 gestantes del primer y tercer trimestre del embarazo. Las mismas fueron reunidas de acuerdo a los siguientes grupos de edades: Adolescentes, adultas jóvenes y adultas de más de 35 años. A todas las gestantes de la muestra se les efectuó un examen estomatológico para diagnosticar las pacientes portadoras de Enfermedad Periodontal, las formas clínicas presentadas, así como evaluar la calidad de la higiene bucal. Resultados: Se comprobó que 36 de las gestantes eran portadoras de Enfermedad Periodontal: 34 presentaban gingivitis y dos periodontitis. La forma clínica más abundante fue la gingivitis fibro-edematosa. De las 36 gestantes enfermas, 33 eran adultas jóvenes y tres, mayores de 35 años. Ninguna de las adolescentes presentó EP. Del total de gestantes, 20 se encontraban en el primer trimestre y 16 en el tercero. De las 36 pacientes enfermas 29 presentaron higiene bucal deficiente para un 80,55 por ciento y sólo siete mostraban una higiene bucal eficiente para un 19,44 por ciento. Conclusiones: La Enfermedad Periodontal es frecuente entre las gestantes del primer y tercer trimestre a lo cual contribuye la mala higiene bucal, la edad, como también la elevación de las hormonas durante el embarazo(AU)

Introduction: The cause / effect relationship between pregnancy and periodontal disease is very contradictory in the literature. Some authors deny that this relationship exists, while others affirm it. Objective: To identify the presence of Periodontal Disease in first and third trimester pregnant women, taking into account their age and oral hygiene. Methods: The sample consisted of 106 pregnant women from the first and third trimesters of pregnancy. They were collected according to the following age groups: Adolescents, young adults and adults over 35 years of age. All the pregnant women in the sample underwent a stomatological examination to diagnose the patients carrying Periodontal Disease, the presented clinical forms, as well as to evaluate the quality of the oral hygiene. Results: It was found that 36 of the pregnant women were carriers of Periodontal Disease: 34 had gingivitis and two periodontitis. The most abundant clinical form was fibro-edematous gingivitis. Of the 36 pregnant women, 33 were young adults and three were over 35 years old. None of the adolescents presented EP. Of the total of pregnant women, 20 were in the first quarter and 16 in the third. Of the 36 sick patients, 29 had poor oral hygiene for 80.55 percent and only seven showed efficient oral hygiene for 19.44 percent. Conclusions: Periodontal disease is common among pregnant the first and third quarter which contributes to poor oral hygiene, age, as well as elevated hormones during pregnancy(AU)

Estado anímico en el tiempo libre de estudiantes que inician y culminan la Universidad / Mood state in leisure time of students who university start and finish

Introducción: El tiempo libre es fundamental en la vida personal del individuo, infiriendo un papel preponderante en indicadores tales como la salud. El empleo del tiempo libre puede contribuir positiva o negativamente en el estado de ánimo de estudiantes, equilibrando procesos psíquicos y de conducta social. Objetivo: Analizar el estado de ánimo en el tiempo libre de los estudiantes universitarios que inician y culminan la carrera en Ciencias de la Actividad Física, Deportes y Recreación de la Universidad de las Fuerzas Armadas ESPE. Métodos: Se estudia la población de estudiantes universitarios en ciencias de la Actividad Física, Deportes y Recreación de la universidad mencionada, pertenecientes al primer (40 sujetos) y octavo semestre (10 sujetos), con un rango etario entre 19-28 años de edad. Se aplicó en periodos de exámenes dos encuestas, la primera para evaluar los Programas de Ocio y Tiempo Libre (EPOL) utilizado por el estudiantado, y la segunda para determinar el Perfil de Estados de Ánimo (POMS). Los resultados fueron comparados con la prueba U de Mann-Whitney (p ≤ 0,05). Resultados: La calidad promedio del tiempo libre en el octavo semestre se determinó en 94,9 puntos, y del primer semestre en 91,95 puntos (Diferencia: 2,95), sin existir diferencias significativas (p=0,693). Para el caso del estado de ánimo el octavo semestre alcanzó 62,8 puntos, y el primer semestre 46,6 puntos (Diferencia: 16,2), sin existir diferencias significativas (p=0,181). Conclusiones: Se demuestra la no existencia de diferencias significativas en los estados de ánimo y en la calidad del tiempo libre de los grupos independientes estudiados. Las causas probables se relacionen con los niveles de motivación del alumnado, que, aunque diferentes poseen índices aceptables que compensan estados psicológicos desfavorables, además del índice de actividad física relativamente elevado que poseen los estudiantes de actividad física, una variable que compensa posibles estados negativos de ánimo, que no está presente en otras carreras universitarias, aspecto que se recomienda estudiar(AU)

Introduction: Leisure time is fundamental for personal life in human being, inferring a preponderant role in indicators such as health. The leisure time use can contribute positively or negatively in the student's mood, balancing psychic processes and social behavior. Objective: to analyze the mood state in the university student's leisure time of the that initiate and culminate the studies in Ciencias de la Actividad Física, Deportes y Recreación in the Universidad de las Fuerzas Armadas ESPE. Methods: The population of university students in Physical Activity, Sports and Recreation sciences of the aforementioned university is studied, belonging to the first (40 subjects) and eighth semester (10 subjects), with a range between 19-28 years old. Two surveys were applied during exam periods, the first to evaluate the Leisure Programs (EPOL) used by the student body, and the second to determine the Profile of Mood States (POMS). The results were compared with the Mann-Whitney U test (p≤0.05). Results: the average leisure time quality for eighth semester was determined in 94.9 points, and first semester in 91.95 points (Difference: 2.95), without significant differences (p = 0.693). In the mood case, the eighth semester reached 62.8 points, and first semester 46.6 points (Difference: 16.2), without significant differences (p = 0.181). Conclusions: The non-existence of significant differences in the mood states and leisure time quality in the independent groups studied is demonstrated. The probable causes are related to student motivation levels, which although different have acceptable indexes that compensate for unfavorable psychological states, in addition to physical activity relatively index high that have physical activity students, a variable that compensates possible negative moods, that is not present in other university careers, aspect that is recommended to study(AU)

Tiempo, ansiedad y concentración:: influencia en la efectividad en tiros libres del baloncesto femenino / Time, anxiety and concentration: influence on the effectiveness in free throws of women's basketball

Introducción: La ansiedad y la concentración pueden ser variables que afecten el desempeño deportivo, la primera definida como una respuesta del organismo frente a estímulos externos e internos, y la segunda como un proceso psíquico donde se incluye el razonamiento en función de lograr un objetivo determinado. Otra variable como el tiempo de ejecución de la técnica del tiro libre podría en conjunto con las otras variables mencionadas influir en la efectividad técnico-táctica en el baloncesto femenino de la categoría senior. Objetivo: establecer la existencia de una relación entre las variables tiempo empleado para implementar la técnica del tiro libre en baloncesto femenino, y la influencia del nivel de ansiedad y concentración en la efectividad de los tiros libres. Métodos: Se realiza una investigación de tipo exploratoria, descriptiva e inferencial, investigando a la población de 18 jugadores del equipo femenino categoría senior de la Universidad Internacional Sek, Ecuador (18-34 años). Se estudiaron 12 juegos de baloncesto y 24 sesiones de entrenamiento, obteniendo la efectividad de los tiros libres (porcentajes de aciertos) y su correlación con el tiempo empleado para realizar la técnica del tiro libre, el nivel de concentración (Test de Tolouse Pieron), y el nivel de ansiedad (Test de Idare). Resultados: se determina la existencia de una correlación positiva débil entre el Tiempo empleado en los Tiros Libres Efectivos y el Porciento de la efectividad en tiros libres (r=0,169696301). Entre el Nivel de Ansiedad Reactiva o Ansiedad-Estado y la efectividad en los tiros libres se estableció una correlación negativa (r= -0,265917973); entre el nivel de Ansiedad-rasgo una correlación positiva moderada con la efectividad en tiros libres (r= 0,344253984), y una correlación lineal positiva moderada entre el Nivel de Concentración y la efectividad de los tiros libres (r= 0,301500746). Conclusiones: El tiempo empleado en la ejecución técnica de los tiros libres del baloncesto senior femenino, la atención y la concentración, poseen una influencia lineal normalmente positiva a nivel bajo y moderado en la efectividad porcentual de la técnica deportiva mencionada(AU)

Introduction: Anxiety and concentration can be variables that affect sports performance, the first defined as a response of organism to external and internal stimuli, and the second as a psychic process where reasoning is included in order to achieve a specific objective . Another variable such as the execution time of free-throw technique could, in conjunction with the other variables mentioned, influence the technical-tactical effectiveness in women's basketball in the senior category. Objective: to establish the existence of a relationship between the variables time used to implement the technique of free throw in women's basketball, and the influence of anxiety level and concentration on the free throws effectiveness. Methods: Exploratory, descriptive and inferential research was carried out, investigating the population of 18 players, senior category female team of Universidad Internacional SEK, Ecuador (18-34 years). 12 basketball games and 24 training sessions were studied, obtaining the effectiveness of free throws (success percentage) and its correlation with the time used to perform the free throw technique, the concentration level (Test of Tolouse Pieron), and the anxiety level (Idare Test). Results: the existence of a weak positive correlation between the Time used in free throws and the effectiveness percentage in free throws (r = 0.169696301), between the Reactive Anxiety Level or Anxiety-State, and Effectiveness index in free throws, a negative correlation was established (r = -0.265917973), between the Anxiety-trait level a moderate positive correlation in free throws effectiveness (r = 0.34425398484), and a moderate positive linear correlation between the Concentration Level and the free throws effectiveness (r = 0.301500746). Conclusions: The time spent in free throws technical execution of senior women's basketball, attention and concentration, have a linear influence that is normally positive at a low and moderate level in percentage effectiveness of the aforementioned sports technique(AU)