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1.
Rev. bras. med. esporte ; 28(6): 654-657, Nov.-Dec. 2022. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1376764

RESUMO

ABSTRACT Introduction Modern basketball is very competitive and enjoyable; it combines several factors. Basketball requires specific physical characteristics such as high stature, which raises the position of the center of gravity, making the stability angle smaller. This compromises stability, especially in sudden speed and direction changes, because it requires a large base opening. The core musculature is intimately involved with body balance; however, there is a lack of studies verifying the impact of specific training of this region on balance in basketball athletes. Objective To explore the influence of core strengthening on the physical fitness of college basketball players. Methods 12 college basketball players were selected and randomly divided into a control group and an experimental group. The experimental group performed core strengthening training, while the control group practiced traditional strength training. After six weeks, physical fitness and basic skills were compared between the groups. Data were statistically treated and discussed confronting the literature. Results Basketball players in the experimental group obtained higher fast dribbling passes and shots than before the experiment (P<0.05), there was no statistically significant difference in several indicators in the control group ( P>0.05); Basketball players in the experimental group had higher fast dribbling passes and shots than the control group (P<0.05), there was no statistically significant difference in approach height between the experimental group and the control group (P>0.05). Conclusion Core strengthening training can improve the physical fitness of college basketball players. Evidence level II; Therapeutic Studies - Investigating the results.


RESUMO Introdução O basquete moderno é muito competitivo e prazeroso, é uma combinação de vários fatores. O basquetebol exige características físicas específicas como a alta estatura, que eleva a posição do centro de gravidade, tornando o ângulo de estabilidade menor. Isso compromete a estabilidade, principalmente nas mudanças repentinas de velocidade e direção pois exige grande abertura de base. A musculatura do core está intimamente envolvida com o equilíbrio corporal, entretanto faltam estudos verificando o impacto do treino específico dessa região no equilíbrio em atletas de basquetebol. Objetivo Explorar a influência do fortalecimento do core na aptidão física dos jogadores universitários de basquete. Métodos 12 universitários jogadores de basquete foram selecionados e aleatoriamente divididos em grupo controle e grupo experimental. O experimental realizou treino fortalecimento do core, enquanto o controle praticava treinamento de força tradicional. Após seis semanas, comparou-se a aptidão física e habilidades básicas entre os grupos. Os dados foram tratados estatisticamente e discutidos confrontando a literatura. Resultados Os jogadores de basquete do grupo experimental obtiveram maiores passes rápidos de drible e arremessos do que antes do experimento (P<0,05), não houve diferença estatisticamente significativa em vários indicadores no grupo controle ( P>0,05); Os jogadores de basquete do grupo experimental apresentaram maiores passes e arremessos de drible rápido do que o grupo controle (P<0,05), não houve diferença estatisticamente significativa na altura de aproximação entre o grupo experimental e o grupo controle (P>0,05). Conclusão O treino de fortalecimento do core pode melhorar a aptidão física de jogadores universitários de basquete. Nível de evidência II; Estudos terapêuticos - Investigação de resultados.


RESUMEN Introducción El baloncesto moderno es muy competitivo y divertido, es una combinación de varios factores. El baloncesto exige características físicas específicas como la alta estatura, que eleva la posición del centro de gravedad, haciendo que el ángulo de estabilidad sea menor. Esto compromete la estabilidad, sobre todo en los cambios bruscos de velocidad y dirección, porque exige una gran apertura de la base. Los músculos del core están íntimamente implicados con el equilibrio corporal, sin embargo, faltan estudios que verifiquen el impacto del entrenamiento específico de esta región sobre el equilibrio en los deportistas de baloncesto. Objetivo Explorar la influencia del fortalecimiento del núcleo en la aptitud física de los jugadores universitarios de baloncesto. Métodos Se seleccionaron 12 jugadores de baloncesto universitario y se dividieron aleatoriamente en un grupo de control y un grupo experimental. Los experimentales realizaron un entrenamiento de fortalecimiento del núcleo, mientras que los de control practicaron un entrenamiento de fuerza tradicional. Después de 6 semanas, se comparó la aptitud física y las habilidades básicas entre los grupos. Los datos fueron tratados estadísticamente y discutidos confrontándolos con la literatura. Resultados Los jugadores de baloncesto del grupo experimental obtuvieron pases y tiros rápidos más altos que antes del experimento (P<0,05), no hubo diferencias estadísticamente significativas en varios indicadores en el grupo de control ( P>0,05); Los jugadores de baloncesto del grupo experimental tuvieron pases y tiros rápidos más altos que el grupo de control (P<0,05), no hubo diferencias estadísticamente significativas en la altura de aproximación entre el grupo experimental y el grupo de control (P>0,05). Conclusión El entrenamiento de fortalecimiento del núcleo puede mejorar la condición física de los jugadores de baloncesto universitarios. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.


Assuntos
Humanos , Masculino , Adulto Jovem , Basquetebol/fisiologia , Aptidão Física/fisiologia , Centro Abdominal/fisiologia , Estudantes , Universidades
2.
Rev. bras. med. esporte ; 28(6): 760-762, Nov.-Dec. 2022. tab
Artigo em Inglês | LILACS | ID: biblio-1376767

RESUMO

ABSTRACT Introduction The high muscular strength in the hip joint is the foundation of jumping ability. Isometric resistance training includes the process of takeoff and landing, recruiting a more extensive set of muscle groups. Objective Analyze the isometric resistance training effects on lower limb muscle activity, including the coactivation of the antagonist's muscles. Methods By mathematical statistics, weight-bearing isometric resistance training effects on lower extremity maximal muscle strength and explosive power were observed. Changes in coactivation and preactivation levels of lower extremity antagonist muscles data are evaluated and compared before and after isometric resistance training. Results The peak angular velocity of the joints at the hip and ankle in the isometric resistance training group is significantly higher than the control group. There was no significant difference in the peak angular velocity of the knee between the groups (P<0.05). Conclusion Isometric resistance training can shorten the return period, shorten the amortization period, and increase the energy conversion capacity in the muscle-tendon complex. Evidence level II; Therapeutic Studies - Investigating the results.


RESUMO Introdução A elevada força muscular na articulação do quadril é o que fundamenta a habilidade do salto. O treino resistido isométrico inclui o processo de decolagem e aterrissagem, recrutando um conjunto maior de grupos musculares. Objetivo Analisar os efeitos do treino isométrico resistido sobre a atividade muscular dos membros inferiores, incluindo a coativação dos músculos antagonistas. Métodos Por meio de estatísticas matemáticas, observa-se o efeito do treino isométrico resistido com sustentação de peso na força muscular máxima das extremidades inferiores e sua potência explosiva. Os dados das mudanças nos níveis de coativação e pré-ativação dos músculos antagonistas dos membros inferiores são avaliados e comparados antes e após o treino isométrico resistido. Resultados O pico de velocidade angular das articulações no quadril e tornozelo do grupo de treino isométrico resistido é significativamente maior do que no grupo controle. Não houve diferença significativa no pico de velocidade angular do joelho entre os dois grupos (P<0,05). Conclusão O treino isométrico resistido pode encurtar o período de retorno, encurtar o período de amortização e aumentar a capacidade de conversão de energia no complexo músculo-tendíneo. Nível de evidência II; Estudos terapêuticos - Investigação de resultados.


RESUMEN Introducción La elevada fuerza muscular en la articulación de la cadera es lo que fundamenta la capacidad de saltar. El entrenamiento de resistencia isométrica incluye el proceso de despegue y aterrizaje, reclutando un conjunto mayor de grupos musculares. Objetivo Analizar los efectos del entrenamiento de resistencia isométrica en la actividad muscular de las extremidades inferiores, incluyendo la coactivación de los músculos antagonistas. Métodos Mediante la estadística matemática, se observó el efecto del entrenamiento de resistencia isométrica con carga de peso sobre la fuerza muscular máxima de las extremidades inferiores y su potencia explosiva. Los datos de los cambios en los niveles de coactivación y preactivación de los músculos antagonistas de las extremidades inferiores se evalúan y comparan antes y después del entrenamiento de resistencia isométrica. Resultados La velocidad angular máxima de las articulaciones en la cadera y el tobillo en el grupo de entrenamiento de resistencia isométrica es significativamente mayor que en el grupo de control. No hubo diferencias significativas en la velocidad angular máxima de la rodilla entre los dos grupos (P<0,05). Conclusión El entrenamiento de resistencia isométrica puede acortar el periodo de retorno, reducir el periodo de amortización y aumentar la capacidad de conversión de energía en el complejo músculo-tendón. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.


Assuntos
Humanos , Adolescente , Resistência Física/fisiologia , Basquetebol/fisiologia , Força Muscular/fisiologia , Atletas , Contração Isométrica/fisiologia
3.
Rev. bras. med. esporte ; 28(6): 763-766, Nov.-Dec. 2022. tab
Artigo em Inglês | LILACS | ID: biblio-1376773

RESUMO

ABSTRACT Introduction Basketball is a popular sport globally, and as the development of college basketball develops, basketball injuries also tend to increase. The knee has the highest injuries and problems incidence, reducing the athlete's ability and shortening their professional career. Objective Explore the causes and characteristics of knee joint injuries in basketball players, comparing their different levels, performances, and positions. Methods 600 college basketball players were studied. Current and past injuries were collected. A questionnaire on lifestyle, behavior, and habits was also applied, and their levels of physical ability and knowledge were also evaluated. Statistical methods were employed to investigate the characteristics and causes of knee joint injuries in young athletes. Results Among knee joint injuries of adolescent basketball players, there were more medial collateral ligament injuries and meniscal injuries. The probabilities are 34.1% and 24.3%, respectively. Patellar strain and cruciate ligament injury accounted for 12.1% and 19.5%, respectively, and the probability of fracture injury was 2.4%. Conclusion The knee joint is one of the most vulnerable joints in basketball. The consequences of its injury can bring an athletic career down and have a considerable impact on athletes' physical and mental health. Evidence Level II; Therapeutic Studies - Investigating the results.


RESUMO Introdução O basquete é um esporte popular em todo o mundo e com o desenvolvimento do basquetebol universitário, as lesões causadas pelo basquetebol também tendem a aumentar. O joelho possui o maior índice de lesões e problemas nessa articulação também reduzem a capacidade do atleta, encurtando a sua carreira profissional. Objetivo Explorar as causas e características das lesões na articulação do joelho em jogadores de basquetebol comparando seus diferentes níveis, desempenhos e posições. Métodos 600 universitários jogadores de basquete foram estudados. Foram arquivadas as lesões atuais e pregressas. Um questionário sobre estilo de vida, comportamento e hábitos também foi aplicado; seus níveis de habilidade física e conhecimento foram avaliados. Métodos estatísticos investigaram as características e causas das lesões na articulação do joelho nos jovens atletas. Resultados Entre as lesões articulares de joelho nos jogadores adolescentes de basquete, houve mais lesões ligamentares colaterais mediais e lesões meniscais. As probabilidades são de 34,1% e 24,3%, respectivamente. A tensão patelar e a lesão do ligamento cruzado representaram 12,1% e 19,5%, respectivamente, e a probabilidade de lesão por fratura foi de 2,4%. Conclusão A articulação do joelho é uma das partes mais vulneráveis do basquetebol. As consequências de sua lesão podem acarretar o fim da carreira esportiva, tendo um impacto considerável sobre a saúde física e mental dos atletas. Nível de evidência II; Estudos Terapêuticos - Investigação de Resultados.


RESUMEN Introducción El baloncesto es un deporte popular en todo el mundo y con el desarrollo del baloncesto universitario, las lesiones causadas por el baloncesto también tienden a aumentar. La rodilla tiene el mayor índice de lesiones y los problemas en esta articulación también reducen la capacidad del deportista, acortando su carrera profesional. Objetivo Explorar las causas y características de las lesiones de la articulación de la rodilla en jugadores de baloncesto comparando sus diferentes niveles, rendimientos y posiciones. Métodos Se estudiaron 600 jugadores de baloncesto universitario. Se presentaron las lesiones actuales y pasadas. También se aplicó un cuestionario sobre el estilo de vida, el comportamiento y los hábitos; y también se evaluaron sus niveles de capacidad física y conocimientos. Se emplearon métodos estadísticos para investigar las características y las causas de las lesiones de la articulación de la rodilla en atletas jóvenes. Resultados Entre las lesiones de la articulación de la rodilla de los jugadores de baloncesto adolescentes, hubo más lesiones del ligamento colateral medial y de menisco. Las probabilidades son del 34,1% y del 24,3%, respectivamente. La distensión rotuliana y la lesión del ligamento cruzado representaron el 12,1% y el 19,5%, respectivamente, y la probabilidad de lesión por fractura fue del 2,4%. Conclusión La articulación de la rodilla es una de las partes más vulnerables del baloncesto. Las consecuencias de su lesión pueden llevar al fin de una carrera deportiva, teniendo un impacto considerable en la salud física y mental de los atletas. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.


Assuntos
Humanos , Traumatismos em Atletas/epidemiologia , Basquetebol , Traumatismos do Joelho/epidemiologia , Inquéritos e Questionários , Estilo de Vida
4.
Eur Rev Med Pharmacol Sci ; 26(17): 6073-6083, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36111907

RESUMO

OBJECTIVE: Basketball players often display poor balance and increased injury rates when compared to other athletic categories. Therefore, the relationship between postural control and injury risks in basketball athletes requires investigation. The purpose of this study was to: (a) establish a postural profile of elite women basketball players, (b) compare postural control of the different playing positions to detect the vulnerability of postural balance, and (c) attempt to understand the reasons underlying these differences. PATIENTS AND METHODS: 30 elite female basketball players (aged 21.4±2.3 years) were assigned to three groups according to their playing positions (n=10 guards; n=10 forwards; n=10 centers). A one-way analysis of variance was performed to determine differences between balance test variables under three conditions (static, dynamic antero-posterior and medio-lateral). When a significant main effect was observed, Tukey's post-hoc multiple comparisons tests were used to determine statistical significance. Associations between balance and morphological variables, muscle strength and power were assessed using Pearson's correlation coefficient. RESULTS: Results reveal that basketball players had better postural control than previously studied handball players and non-athletes, but they are more dependent on vision than other categories. When comparing postural controls of playing position, centers show greater vulnerability [Y mean (OE)] than forwards: p<0.001; or guards: p<0.01), due to morphological factors (body mass r=-0.80, height r=-0.68, and lower limb length r=-0.63, and specific power r=-0.40). CONCLUSIONS: Therefore, coaches and strength and conditioning specialists should give specific focus to improving lower limb strength and power in centers and taller basketball players to mitigate against injury risks related to postural control.


Assuntos
Basquetebol , Atletas , Basquetebol/fisiologia , Estatura , Feminino , Humanos , Força Muscular/fisiologia , Equilíbrio Postural
5.
J Environ Public Health ; 2022: 8624803, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36060876

RESUMO

Enthusiasm for sports competitions is consistently high. In sports competitions, athletes not only need to have superb skills but also need a strong psychological quality. Usually, athletes with high psychological quality can make their technical level outstanding; on the contrary, for athletes with low psychological quality, even if the level of competition is very high, it is difficult to achieve excellent results. This study analyzes the data of basketball players to study the influence of the stability of different players' psychological quality on the performance of basketball games. The "mental state" of basketball players is negatively correlated with their performance in basketball games, and the players' psychology often shows signs of tension during basketball games. This tension is the result of a variety of psychological effects, and the number of times of tension is different under different psychological quality stabilities. The experimental analysis results of this study show that through the data analysis of the psychological factors affecting basketball players, the key factors affecting their psychology have been explored, and strategies and methods that can effectively cultivate the psychological quality of basketball players have been found, in order to provide a reference for improving the psychological quality of basketball players.


Assuntos
Basquetebol , Atletas/psicologia , Basquetebol/psicologia , Humanos
6.
Comput Math Methods Med ; 2022: 4676968, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36035292

RESUMO

In order to scientifically explore the effective path of strength quality training of basketball players and improve the effect of strength quality training of basketball players, this paper takes young basketball players as the research object and comprehensively observes the changes and improvement of strength quality by building a strength training monitoring system for basketball players. On this basis, it is proposed to integrate blood flow restriction and basketball players' special strength training. Through the comparison with the traditional resistance strength training method, it is found that after 8 weeks of experimental comparison, the athletes' strength quality test indicators show that the average 3RM of the experimental group 1 bench press is 65.2 kg, the experimental group 2 is 65.7 kg, and the experimental group 3 is 72.2 kg. The average performance of the traditional control group was 55.4 kg. Compared with the traditional group, the average performance of the three experimental groups in bench press was significantly improved, which also verified the feasibility of this method in strength quality training.


Assuntos
Basquetebol , Treinamento de Força , Adolescente , Atletas , Terapia por Exercício , Humanos , Força Muscular
7.
Contrast Media Mol Imaging ; 2022: 5742543, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35992544

RESUMO

In order to solve the problem of sports medical image in basketball training, a sports medical image modeling research method based on injury prevention in basketball training was proposed. By the method, the current situation of sports injury in university basketball was investigated. At the same time, the injury factors were analyzed on four occasions, including basketball class, extracurricular activities, competition, and training. In order to reduce the occurrence of injury and enhance the security of basketball sports for nonbasketball students of physical education, combined with the problems and reasons, the corresponding suggestions were put forward. Through the experiment, it was found that the incidence of basketball injury for nonbasketball male university students was as high as 90.7%. The results of the experiment showed that it was necessary to enhance the awareness of self-protection, control emotions and exhibitionism, strengthen physical training, attach importance to basic skills training, do warm-up activities, stay focused, pay attention to exercise load, and prevent excessive fatigue.


Assuntos
Traumatismos em Atletas , Basquetebol , Medicina Esportiva , Traumatismos em Atletas/epidemiologia , Traumatismos em Atletas/etiologia , Traumatismos em Atletas/prevenção & controle , Basquetebol/lesões , Humanos , Masculino
8.
J Environ Public Health ; 2022: 6340347, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35958381

RESUMO

In order to improve the basketball theory and provide theoretical and intellectual support for the scientific, mental health, and sustainable development of basketball, we propose to take the development dynamic mechanism of juvenile basketball as the research object and make a systematic and in-depth study on the dynamic mechanism, the cultivation of Chinese and foreign juvenile basketball reserve talents, and the dynamic dilemma and influencing factors of juvenile campus basketball development by using the methods of literature, questionnaire, and expert interview. A method of cultivating the ring tone of juvenile basketball is proposed. This method is based on Chan algorithm. When the target is close to each base station, the first estimation also needs an initial value to solve the initial solution estimation matrix. The method is also based on multivariate Taylor algorithm, taking into account the measured distance between the targets to be measured, so it will get some useful information, which will improve the positioning accuracy. The experimental results show that the accuracy of the algorithm used in this paper is more than 85%. However, the accuracy of rebounding and passing recognition and prediction is low. The recognition accuracy and prediction accuracy of the test set are slightly lower than that of the effective set, which shows that the performance of the target detection system model in this paper can be further improved through more significant training examples. It is proved that the algorithm based on Taylor ring can meet the needs of teenagers in the basketball coordination and mental health.


Assuntos
Desempenho Atlético , Basquetebol , Adolescente , Desempenho Atlético/psicologia , Basquetebol/psicologia , Exercício Físico , Humanos , Saúde Mental , Inquéritos e Questionários
9.
J Environ Public Health ; 2022: 3688596, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35958387

RESUMO

Physical education pedagogy serves as a carrier of physical education theory and practical activities and plays an important role in physical education. The reform and development of education are always related closely to the growth of scientific and technological development, and people's physical education training methods are also undergoing subtle changes. The traditional single and formulaic training methods in the past have gradually turned to modern training methods with better interaction and visibility. All of this prompts people to have new requirements on sports training concepts and training modes. On this basis, teachers can conduct virtual teaching in a more interactive, more involved, and orderly manner in the virtual classroom. This paper constructs the implementation framework of VR basketball teaching auxiliary training, divides students into an experimental group and a control group and tests the physical fitness of students before and after the experiment. The students' basic basketball skills were tested by using embedded intelligent sensors to recognize the students' movements. The experimental results showed that after the test, the four basic basketball skills scores of the students in the experimental group were 68.78, 74.02, 73.13, and 72.34, respectively. The virtual reality basketball teaching system designed in this paper can effectively improve the basketball level of students.


Assuntos
Basquetebol , Realidade Virtual , Humanos , Estudantes
10.
Scanning ; 2022: 2554581, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36042982

RESUMO

In order to solve the problem of observing the effect of rehabilitation physical training on basketball player injury, a kind of observation study on the effect of rehabilitation physical training on basketball player injury based on memory ultrasound examination was proposed. This study makes a comprehensive analysis of physical fitness training factors such as physical fitness test plan, training arrangement, training method, training monitoring, and effect evaluation. Through the experiment, it is found that there are still gaps in physical training, diagnostic standards, training plans and requirements, load monitoring, standardization of operation, nutrition, and recovery in the training organization. There are only 23.81% of full-time physical coaches and 25.40% of professional team doctors at all levels of sports teams. There were only 23.81% of full-time physical fitness coaches and 25.40% of professional team doctors in all levels of sports teams. Basketball players in the basketball injury survey had 67 sports injuries throughout the year, with a rate of 3.35 injuries per person and 2.48 injuries per 1000 hours. The location of chronic injuries is usually the lower back, knee joint, and ankle. The main injuries are due to the physical component, with injuries occurring most frequently throughout the training season in July, August, and September. Experiments show that good and professional physical training can reduce the risk of injury to a greater extent than strengthening the specific skills of athletes.


Assuntos
Traumatismos em Atletas , Basquetebol , Atletas , Traumatismos em Atletas/diagnóstico por imagem , Basquetebol/lesões , Humanos
11.
BMJ Open ; 12(8): e060937, 2022 08 30.
Artigo em Inglês | MEDLINE | ID: mdl-36041763

RESUMO

OBJECTIVES: To identify the fall characteristics of athletes in wheelchair rugby and wheelchair basketball during the Tokyo 2020 Paralympic Games and descriptively compare these with those of the Rio 2016 Paralympic Games. DESIGN: Cross-sectional analysis. PRIMARY AND SECONDARY OUTCOME MEASURES: We obtained video footage from the International Paralympic Committee of the Tokyo 2020 Paralympic Games that included 8 teams from each of the 18 wheelchair rugby and 10 wheelchair basketball games (men and women). The data were analysed to evaluate the number of falls, class difference (low or high pointer), time of play during the fall, phase of play, contact with other athletes, fall direction, fall location and the body part that first contacted the floor during the fall. These data from the Rio 2016 and Tokyo 2020 games were compared. RESULTS: Overall, 430 falls (rugby, 104; men's basketball, 230 and women's basketball, 96) occurred (average per game ±SD: 5.8±3.1, 23.0±5.4 and 9.6±5.0, respectively). Significant differences in class, direction, fall location and body part point of contact between the three sports were observed. In wheelchair rugby, falls occurred mainly in high pointers and tended to be more lateral due to contact. In wheelchair basketball, falls occurred more in female high-pointers and in male low pointers, with more forward falls due to forward contact. Unlike in the Rio 2016 games, no difference between the events based on the presence or absence of contact was observed in the Tokyo 2020 games. CONCLUSIONS: The number of falls increased in Tokyo 2020 compared with Rio 2016, with no significant difference in the characteristics of falls between the Rio 2016 and Tokyo 2020 games. Only in men's wheelchair basketball, the number of falls in low pointers significantly increased in the Tokyo 2020 games when compared with that in the Rio 2016 games.


Assuntos
Basquetebol , Cadeiras de Rodas , Atletas , Estudos Transversais , Feminino , Humanos , Masculino , Esportes de Equipe , Tóquio
12.
Medicina (Kaunas) ; 58(8)2022 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-36013546

RESUMO

Background and Objectives: The purpose of this study was twofold: (1) to examine strength asymmetries in elite athletes of different sports and (2) to examine the magnitude of asymmetries between elite and u18 athletes. Materials and Methods: A total of 254 athletes participated in this study. For the first purpose of the study, the group consisted of adult professional male basketball players (n = 30), elite male (n = 30) and female soccer players (n = 20), male futsal players (n = 30), elite male goalkeepers (n = 22), and professional female volleyball players (n = 20). For the second purpose, male youth goalkeepers (n = 22), youth female (n = 20) and male soccer players (n = 30), and youth male basketball players (n = 30) were compared to the adult athletes of the same sport. Asymmetries were measured utilizing a Humac Norm and Rehabilitation device. Testing included three maximal concentric flexion and extension repetitions at an angular speed of 60°/s. The differences in asymmetries were assessed using ANOVA followed by an LS means post-hoc analysis. An independent samples t-test was used to identify the differences between adult and youth players. Results: It was indicated that none of the groups demonstrated asymmetries greater than 10%, other than the elite female soccer players and female volleyball players. Significant differences were demonstrated between youth and adult soccer players (males and females), with the adult groups demonstrating increased asymmetries. Conclusions: Special consideration should be given to female soccer players and volleyball players, as soccer and volleyball practice and competition at the professional level may induce greater lower -limb asymmetries. The isokinetic parameters can be useful for planning strength and conditioning interventions in order to reduce or prevent those imbalances. Additional unilateral and bilateral jumping testing is encouraged for the verification of imbalances.


Assuntos
Basquetebol , Futebol , Voleibol , Adolescente , Adulto , Atletas , Feminino , Humanos , Masculino , Amplitude de Movimento Articular
13.
Artigo em Inglês | MEDLINE | ID: mdl-36011685

RESUMO

The current study aimed to compare the possible effects of differential learning strategy, self-controlled feedback, and external focus of attention on kinetic and kinematic risk factors of anterior cruciate ligament (ACL) injury in athletes. Forty-eight male athletes from three sports of handball, volleyball and basketball were selected for this study and were randomly divided into four groups: differential learning (n = 12), self-control feedback (n = 12), external focus (n = 12), and control (n = 12) group. All groups followed the intervention for eight weeks with three sessions per week. Data were analyzed by means of 4 × 2 repeated measures ANOVA followed by post hoc comparison (Bonferroni) at the significance level of p ≤ 0.05. A significant group × time interaction and the main effect of time was found for most kinetic and kinematic variables. The main effect of the group was significant only at the knee abduction angle. Differential learning and external focus of attention methods positively reduced the kinetic and kinematic variables that are considered risk factors for ACL injury. However, the effect sizes (Cohen's d) for the changes in most of the variables were larger for the differential learning group. Tailoring the boundary conditions that are based on the manipulations created in the exercise through variability and variety of movements associated with differential learning methods rather than repeating movements could reduce the risk of ACL injury.


Assuntos
Lesões do Ligamento Cruzado Anterior , Basquetebol , Autocontrole , Ligamento Cruzado Anterior , Lesões do Ligamento Cruzado Anterior/prevenção & controle , Atletas , Atenção , Retroalimentação , Humanos , Articulação do Joelho , Masculino , Fatores de Risco
14.
Artigo em Inglês | MEDLINE | ID: mdl-36011502

RESUMO

Vision is one of the most complex and dominant sensory systems necessary for information feedback from the environment. Few studies have already reported a positive effect of a sport vision program on elite sport teams' visual skills; however, few studies have focused on the effect of sport vision programs on children's visual skills. Therefore, the aim of this study was to determine the effect of a sports vision program on Grade 4 and 5 female netball players' visual skills. Girls (N = 25) with a mean age of 10.08 years (SD = 0.65) formed part of this study. A pre-test-post-test design was followed with a retention test. The eight-week sports vision program was executed twice a week for 60 min on the experimental group (n = 13). The Developmental Test of Visual-Motor Integration (VMI-4), the Wayne Saccadic Fixator (WSF) and the Developmental Eye Movement (DEM) test were used to evaluate the girls' visual skills, hand-eye coordination, visual reaction time, peripheral vision and saccadic eye movements. No statistical differences were found between the two groups before starting with the sports vision program. After intervention, significant differences between the two groups were reported, with the experimental group performing better in hand-eye coordination (p = 0.001) and reaction time (p = 0.001). Results further indicated that the experimental group experienced significant improvements (p ≤ 0.05) in motor coordination, hand-eye coordination, reaction speed and visual tracking after intervention with significant lasting effects (p ≤ 0.05). The control group performed significantly worse in reaction time (p = 0.01). A sports vision program can be recommended for Grade 4 and 5 female netball players to improve certain visual skills.


Assuntos
Basquetebol , Criança , Movimentos Oculares , Feminino , Humanos , Movimentos Sacádicos , Visão Ocular , Percepção Visual
15.
J Int Soc Sports Nutr ; 19(1): 529-542, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35966022

RESUMO

Background: Creatine monohydrate (CrM) supplementation has been shown to be an effective and safe nutritional supplement to improve performance; however, the impact of CrM supplementation in young basketball players is less clear. This study evaluated the effects of CrM supplementation during a strength and conditioning training (SCT) program on lower-limb strength parameters and performance in under-16 (U16) basketball players. Methods: Twenty-three male U16 basketball players participated in this study (14.3 ± 0.4 years; BMI: 20.7 ± 2.2 kg∙m-2). The players were randomly assigned to either a CrM group (n = 12) that ingested 0.1 g·kg-1·day-1 of CrM or to a non-supplemented control group (n = 11, CON). The athletes participated in an 8-week SCT program consisting of two lower-limb resistance-training sessions and two plyometric sessions per week. Squat jump (SJ), drop jump (DP), countermovement jump (CMJ), and Abalakov (ABK) jump power tests as well as basketball performance (points and minutes per game) were measured before, during and/or after the intervention. Data were analyzed using a general linear model with repeated measures with independent Student's t-test pairwise comparisons. Results: The results (95% confidence interval for mean change from baseline) show that there were significant differences for all variables for CrM and CON, respectively: SJ (cm): 2.6 - 6.4, P < 0.01 and 2.2-5.1 P < 0.01; DJ (cm): 2.5-5.6, P < 0.01, and 1.8-4.4, P < 0.01; CMJ (cm): 0.3-0.8, P < 0.01, and 0.2-0.5, P < 0.01; ABK (cm): 2.8-5.5, P < 0.01 and 0.7-2.6, P = 0.003. A significant group x time interaction (p = 0.003, ηp 2 = 0.342) was observed in ABK performance. No significant group x time effects were seen in squat jump (p = 0.449, ηp 2 = 0.028), drop jump (p = 0.143, ηp 2 = 0.099), or counter movement jump (p = 0.304, ηp 2 = 0.05). A significant interaction effect was also observed in points per game (p = 0.049, ηp 2 = 0.149), while a non-significant but medium effect was seen in minutes per game (p = 0.166, ηp 2 = 0.094). Conclusions: CrM supplementation in conjunction with resistance and plyometric training increased the lower-limb ABK power and scoring performance in U16 basketball players.


Assuntos
Desempenho Atlético , Basquetebol , Treinamento de Força , Creatina , Humanos , Masculino , Força Muscular , Treinamento de Força/métodos
16.
Medicine (Baltimore) ; 101(33): e30040, 2022 Aug 19.
Artigo em Inglês | MEDLINE | ID: mdl-35984166

RESUMO

INTRODUCTION: Stress fracture of the patella is an overuse disorder that occurs in the lower extremity. Surgery may be considered if conservative treatment does not work or if a quicker and more reliable return to sports is expected. Surgery is usually performed under fluoroscopic guidance based on the premise that the proper placement of the internal fixation material can be determined on radiographic images. PATIENT CONCERNS: A 16-year-old female basketball player gradually became aware of pain in the anterior aspect of her right knee during basketball, without any particular history of trauma. A computed tomography scan revealed a small bone fragment on the lateral side of the distal end of the patella. DIAGNOSIS: Stress fracture of the patella. INTERVENTIONS: Since it was difficult to determine the exact location of the bone fragment on radiographs, the surgery was performed under ultrasound guidance rather than fluoroscopy. While checking the bone fragment with ultrasound images, insertion of the guide pin, drilling, and screw fixation were performed under ultrasound guidance. OUTCOMES: Postoperative computed tomography showed accurate screw insertion into the bone fragment. Two months after surgery, bony fusion was confirmed, and the patient returned to her preinjury level of basketball. CONCLUSION: Ultrasound-guided screw fixation was useful in this case in which internal fixation of fractures is difficult under fluoroscopic guidance.


Assuntos
Basquetebol , Fraturas de Estresse , Adolescente , Parafusos Ósseos , Feminino , Fluoroscopia , Fixação Interna de Fraturas/métodos , Fraturas de Estresse/diagnóstico por imagem , Fraturas de Estresse/cirurgia , Humanos , Patela/diagnóstico por imagem , Patela/lesões , Patela/cirurgia , Ultrassonografia de Intervenção
17.
J Sci Med Sport ; 25(9): 705-709, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35934658

RESUMO

OBJECTIVES: To examine the incidence and survival rates of sudden cardiac arrest that were documented during school organized sports in Japan. DESIGN: Retrospective cohort study. METHODS: Insurance claim data of cardiac events (sudden cardiac death and sudden cardiac arrest with resultant disabilities) that occurred during Japanese high school organized sports between 2009 and 2018 were retrieved. Participation data from All Japan High School Athletic Federation and Japan High School Baseball Federation were used for incidence rate calculations. Incidence rate ratios with 95 % confidence interval were calculated to compare the risk by sports and sex. The survival rate was calculated with the proportion of resuscitated cases to total number of cardiac events in this dataset. RESULTS: A total of 55 cardiac events (25 survivors and 30 deceased) were identified in the dataset. The majority affected male student-athletes (92.7 %). The frequency and incidence rate of cardiac events were highest in male baseball (n = 16 [29.1 %], incidence rate: 0.91 per 100,000 athlete-years). Incidence rate ratio revealed that male basketball (2.19, 95 % confidence interval: 1.04-4.60), male baseball (2.31, 95 % confidence interval: 1.32-4.03), and first-year male baseball (4.11, 95 % confidence interval: 2.10-8.07) had significantly higher risk of cardiac events, compared to the overall incidence rate (0.38 per 100,000 athlete-years). The survival rates were 37.5 % in the first half (2009-2013) and 56.5 % in the latter half (2014-2018) of the study period. CONCLUSIONS: The risk of cardiac events was highest in male, baseball, first-year student-athletes. Rapid AED application by bystanders should be advocated to enhance better survival.


Assuntos
Traumatismos em Atletas , Basquetebol , Traumatismos em Atletas/epidemiologia , Morte Súbita Cardíaca/epidemiologia , Morte Súbita Cardíaca/etiologia , Humanos , Incidência , Japão/epidemiologia , Masculino , Estudos Retrospectivos , Instituições Acadêmicas
18.
Chronobiol Int ; 39(10): 1399-1410, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35980109

RESUMO

This investigation aimed to clarify the influence of circadian change and travel distance on National Basketball Association (NBA) team performance using a dataset from the 2014-2018 seasons. Data from 9,840 games were acquired from an open-access source. Game point differential and team free-throw percentage served as outcome variables. Time zone change (TZΔ) captured raw circadian delay/advance based on travel for a game and adjusted TZΔ (AdjTZΔ) evolved TZΔ by allowing acclimation to a novel TZ. We also further categorized AdjTZΔ into AdjTZΔ_A, which assumed travel the day before each game and AdjTZΔ_B, which assumed teams spent as many days in their home city as possible. Travel distance for each game was calculated. Linear mixed-effects modeling estimated associations, with games nested within team and year. Adjusted associations accounted for differences in team ability, whether the game was home or away, and whether the game occurred on the second half of a back-to-back game sequence. Greater circadian misalignment, regardless of delay or advance, and increasing travel distance negatively influenced NBA game performance. Yet, results suggest that performance outcomes may be more influenced by travel distance than circadian misalignment. Moreover, circadian misalignment and travel distance interacted to significantly influence game point differential. Furthermore, differences in results across analyses were observed between AdjTZΔ_A and AdjTZΔ_B, which suggests that subtle differences in constructed travel schedules can have notable impact on NBA performance outcomes. Lastly, playing on the second half of a back-to-back sequence emerged as a robust predictor of performance disadvantage, which corroborates the existing literature and provides further support for NBA schedule changes purposed to enhance competitive equity by reducing the number of back-to-back games across a season. These findings can help guide NBA teams on key strategies for reducing travel-related disadvantages and inform schedule makers on critical factors to prioritize across future schedules to attenuate competitive inequity from travel. Furthermore, they can help direct teams towards scenarios that are best to target for load management purposes due to the cumulative disadvantage arising from travel-related factors, opponent quality, game location, and game sequence.


Assuntos
Desempenho Atlético , Basquetebol , Ritmo Circadiano , Humanos , Estudos Retrospectivos , Viagem , Doença Relacionada a Viagens
19.
Artigo em Inglês | MEDLINE | ID: mdl-35954997

RESUMO

The main aims of this systematic review with meta-analysis and meta-regression were to describe the effect of multidisciplinary neuromuscular and endurance interventions, including plyometric training, mixed strength and conditioning, HIIT basketball programs and repeated sprint training on youth basketball players considering age, competitive level, gender and the type of the intervention performed to explore a predictive model through a meta-regression analysis. A structured search was conducted following PRISMA guidelines and PICOS model in Medline (PubMed), Web of Science (WOS) and Cochrane databases. Groups of experiments were created according to neuromuscular power (vertical; NPV and horizontal; NPH) and endurance (E). Meta-analysis and sub-groups analysis were performed using a random effect model and pooled standardized mean differences (SMD). A random effects meta-regression was performed regressing SMD for the different sub-groups against percentage change for NPV and NPH. There was a significant positive overall effect of the multidisciplinary interventions on NPV, NPH and E. Sub-groups analysis indicate differences in the effects of the interventions on NPV and NPH considering age, gender, competitive level and the type of the intervention used. Considering the current data available, the meta-regression analysis suggests a good predictability of U-16 and plyometric training on jump performance. Besides, male and elite level youth basketball players had a good predictability on multidirectional speed and agility performance.


Assuntos
Desempenho Atlético , Basquetebol , Exercício Pliométrico , Adolescente , Humanos , Masculino , Força Muscular , Estado Nutricional
20.
PLoS One ; 17(8): e0273427, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35984813

RESUMO

The purpose of the present study was to examine differences in game-related statistical parameters between National Basketball Association (NBA) regular and post-season competitive periods and to determine which variables have the greatest contribution in discriminating between winning and losing game outcomes. The data scraping technique was used to obtain publicly available NBA game-related statistics over a three-year span (2016-2019). The total number of games examined in the present investigation was 3933 (3690 regular season and 243 post-season games). Despite small to moderate effect sizes, the findings suggest that NBA teams' style of play (i.e., tactical strategies) changes when transitioning from the regular to post-season competitive period. It becomes more conservative (i.e., fewer field goal attempts, assists, steals, turnovers, and points scored), most likely due to greater defensive pressure. Discriminant function analysis correctly classified winning and losing game outcomes during the regular and post-season competitive periods in 82.8% and 87.2% of cases, respectively. Two key game-related statistics capable of discriminating between winning and losing game outcomes were field goal percentage and defensive rebounding, accounting for 13.6% and 14.2% of the total percentage of explained variance during the regular season and 11.5% and 14.7% during post-season competitive periods. Also, overall shooting efficiency (i.e., free-throw, 2-point, and 3-point combined) accounted for 23-26% of the total percentage of explained variance.


Assuntos
Basquetebol , Análise Discriminante , Estações do Ano , Roubo
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