RESUMEN
ABSTRACT Introduction: Resistance training aims to improve the physical fitness of an athlete by improving their balance, movement, and agility skills. Boxers should have complementary attention to the strength of the core, a key area for boxing skills. Objective: Examine the effects of core strength training on pugilism in boxers. Methods: Ten volunteer professional boxers were selected. All undergo three months of core strength training under the described protocol. The athletes' sport quality index was studied using mathematical statistics. Results: After 3 months of core strength training, the physical test result was significantly higher (P<0.01). Although in 400-meter runs, sandbag training and interval running scores were higher than before training, the difference was insignificant (P>0.05). Conclusion: The core strength exercises improve the body mass of a boxing athlete and the level of their boxing. Supplementing athletes with core resistance training during regular exercise is indicated. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
RESUMO Introdução: O treinamento de força visa a melhorar a aptidão física de um atleta melhorando suas habilidades de equilíbrio, movimento e agilidade. Os boxeadores devem ter uma atenção complementar na força do centro abdominal, área fundamental para as habilidades pugilistas. Objetivo: Examinar os efeitos do treinamento de força do centro abdominal sobre o pugilismo em boxeadores. Métodos: Foram selecionados dez boxeadores profissionais voluntários. Todos passam por três meses de treinamento de força do centro abdominal sob protocolo descrito. O índice de qualidade esportiva dos atletas foi estudado com a utilização de estatísticas matemáticas. Resultados: Após 3 meses de treinamento de força do centro abdominal, o resultado de teste físico foi significativamente superior (P<0,01). Embora nos 400 metros de corrida, treinamento com saco de areia e pontuação de corrida em intervalos fossem mais altos do que aqueles antes do treinamento, a diferença não foi significativa (P>0,05). Conclusão: Exercícios de força do centro abdominal melhoram a massa corporal de um atleta do boxe e o nível de seu pugilismo. É indicado aos atletas um complemento com fortalecimento do centro abdominal durante o exercício regular. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.
RESUMEN Introducción: El entrenamiento de fuerza tiene como objetivo mejorar la condición física de un deportista mediante la mejora de sus habilidades de equilibrio, movimiento y agilidad. Los boxeadores deben prestar una atención complementaria a la fuerza del núcleo abdominal, una zona fundamental para las habilidades pugilísticas. Objetivo: Examinar los efectos del entrenamiento de la fuerza del núcleo abdominal en el pugilismo de los boxeadores. Métodos: Se seleccionaron diez boxeadores profesionales voluntarios. Todos se someten a tres meses de entrenamiento de fuerza en el centro abdominal según el protocolo descrito. El índice de calidad deportiva de los atletas se estudió mediante estadísticas matemáticas. Resultados: Después de 3 meses de entrenamiento de fuerza en el núcleo abdominal, el resultado de la prueba física fue significativamente mayor (P<0,01). Aunque en la carrera de 400 metros, el entrenamiento con saco de arena y la puntuación de la carrera a intervalos fueron superiores a los de antes del entrenamiento, la diferencia no fue significativa (P>0,05). Conclusión: Los ejercicios de fuerza del núcleo abdominal mejoran la masa corporal de un atleta de boxeo y el nivel de su boxeo. Para los deportistas está indicado un complemento con el entrenamiento de fuerza del núcleo abdominal durante el ejercicio regular. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.
RESUMEN
MYC2 transcription factor is a key component of the core module COI1-JAZ-MYC2 of jasmonate signaling in Arabidopsis, but the MYC transcription factor (s) associated with jasmonate signaling in jasmonate-responsive laticifer cells remains to be identified. Two full-length cDNAs, designated HblMYC1 and HblMYC2, were isolated from laticifer cells in Hevea brasiliensis by the method of RACE. HblMYC1 contained 1431bp ORF encoding a putative protein of 476 amino acids while HblMYC2 contained 1428bp ORF encoding a putative protein of 475 amino acids. Bioinformatic analysis showed that the putative proteins, HblMYC1 and HblMYC2, possessed a bHLH domain and were most related to the MYC2 among the selected 27 MYC members with identified functions in Arabidopsis. In addition to the presence of cis-regulatory elements involving jasmonate responsiveness in the promoter regions of HblMYC1 and HblMYC2, the abscisic acid-, salicylic acid- and gibberellin-responsive elements were found in the promoter region of HblMYC1. Transcripts of HblMYC1 and HblMYC2 were most abundant in latex, relatively low in male flowers and nearly undetected in bark tissues and roots by real-time RT-PCR analysis. Regular tapping, mechanical wounding, and ethrel remarkably up-regulated HblMYC1 expression, but had little effect on the expression of HblMYC2 in laticifer cells. Successive tapping, however, significantly down-regulated the expression of HblMYC2 while up-regulating the expression of HblMYC1. The HblMYC2 expression took a mutual ebb and flow relationship with the HblMYC1 expression upon treatment with methyl jasmonate. Characterization of HblMYC1 and HblMYC2 will contribute to the understanding of jasmonate signaling in laticifiers, a kind of specialized tissue for natural rubber biosynthesis in Hevea brasiliensis.