Lower limb strength training and mobility in table tennis / Treinamento da força dos membros inferiores e mobilidade no tênis de mesa / Entrenamiento de la fuerza en los miembros inferiores y movilidad en el tenis de mesa

ABSTRACT Introduction: Between the existing fast movement ability training program and the real situation of the athletes, there is a discrepancy, which needs to be solved. Objective: Study the effects of lower limb strength training on fast movement ability in table tennis. Methods: A total of 40 volunteers were recruited and divided into the experimental and control groups, with 20 people in each group. The control group followed the traditional table tennis fast-movement training program. In contrast, the experimental group added lower limb strength training based on the traditional table tennis fast movement training program. The experimental and control groups conducted training experiments twice a week, one hour at a time, for a total of 8 weeks. Results: In the specific fast movement fitness test, the number of upper stages before training in the experimental group was 55.91, and after training was 61.25 (P<0.01). In the whole platform turning speed test, the number in the experimental group before training was 61.40, and after training was 64.28 (P<0.01). Conclusion: Fitness in the rapid movement ability of table tennis players was optimized after the addition of the lower limb strength training program. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: Entre o programa de treinamento de habilidade de movimento rápido existente e a situação real dos atletas, existe uma discrepância, que precisa ser solucionada. Objetivo: Estudar os efeitos do treinamento de força dos membros inferiores sobre a habilidade de movimento rápido no tênis de mesa. Métodos: Um total de 40 voluntários foram recrutados e divididos no grupo experimental e no grupo de controle, com 20 pessoas em cada grupo. O grupo de controle seguiu o programa tradicional de treinamento de movimento rápido do tênis de mesa, enquanto ao grupo experimental foi adicionado o treinamento da força dos membros inferiores com base no programa tradicional de treinamento de movimento rápido do tênis de mesa. O grupo experimental e o grupo de controle conduziram experiências de treinamento duas vezes por semana, uma hora de cada vez, por um total de 8 semanas. Resultados: No teste específico de aptidão física para movimentação rápida, o número de estágios superiores antes do treinamento no grupo experimental foi 55,91, e após o treinamento foi 61.25 (P<0.01). Em todo o teste de velocidade de giro da plataforma, o número do grupo experimental antes do treinamento foi de 61,40, e após o treinamento foi de 64,28 (P<0.01). Conclusão: A aptidão física na capacidade de movimentação rápida dos jogadores de tênis de mesa foi otimizada após a adição do programa de treinamento de força dos membros inferiores. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: Entre el programa de entrenamiento de la capacidad de movimiento rápido existente y la situación real de los atletas, existe una discrepancia que es necesario resolver. Objetivo: Estudiar los efectos del entrenamiento de la fuerza de las extremidades inferiores sobre la capacidad de movimiento rápido en el tenis de mesa. Métodos: Se reclutó a un total de 40 voluntarios que se dividieron en el grupo experimental y el grupo de control, con 20 personas en cada grupo. El grupo de control siguió el programa tradicional de entrenamiento de movimientos rápidos de tenis de mesa, mientras que al grupo experimental se le añadió el entrenamiento de fuerza de las extremidades inferiores basado en el programa tradicional de entrenamiento de movimientos rápidos de tenis de mesa. El grupo experimental y el grupo de control realizaron experimentos de entrenamiento dos veces por semana, una hora cada vez, durante un total de 8 semanas. Resultados: En la prueba específica de aptitud física de movimientos rápidos, el número de fases superiores antes del entrenamiento en el grupo experimental fue de 55,91, y después del entrenamiento fue de 61,25 (P<0,01). En la prueba de velocidad de giro en plataforma completa, el número del grupo experimental antes del entrenamiento fue de 61,40, y después del entrenamiento fue de 64,28 (P<0,01). Conclusión: La aptitud en la capacidad de movimiento rápido de los jugadores de tenis de mesa se optimizó tras la adición del programa de entrenamiento de fuerza de las extremidades inferiores. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

microRNA-144 functions as a diagnostic and prognostic marker for retinoblastoma

OBJECTIVES: Retinoblastoma (RB) is a highly malignant eye tumor with a low survival rate and a high metastatic rate. The current work was designed to investigate the potential roles of microRNA-144 (miR-144) in the diagnosis and prognosis of RB. METHODS: miR-144 expression levels in RB tissues and adjacent normal tissues, as well as serum samples from RB patients and healthy controls were measured. The association between miR-144 expression levels and clinical features were analyzed. Moreover, diagnostic and prognostic values of miR-144 in RB were verified by receiver operating characteristic analysis and Kaplan-Meier survival assays. RESULTS: The expression level of miR-144 was markedly decreased in tumor tissues of RB patients, and the expression level of miR-144 was positively associated with tumor size and metastasis in RB patients. Moreover, miR-144 can distinguish tumor tissues from normal tissues with high specificity and sensitivity, and RB patients with lower miR-144 expression have shorter overall and disease-free survival rates than those with higher miR-144 expression. Alternatively, miR-144 also decreased in the serum of RB patients in comparison with healthy subjects, and miR-144 expression levels in the tissue samples and serum were positively correlated. Furthermore, miR-144 levels in the serum of RB patients sensitively distinguished RB patients from healthy controls. CONCLUSIONS: miR-144 expression was downregulated in serum and tissue samples of RB patients and may function as a diagnostic and prognostic marker for RB.

Character of inhibitory control ability and the relationship with craving of mobile phone dependence college students / 中国学校卫生

Objective@#This aim of the study is to analyze the general and specific inhibition control of college students who have mobile phone dependence and their craving for mobile phone after the wastage of inhibition control resource, and to provide a reference for the intervention.@*Methods@#The Mobile Phone Addiction Tendency Scale was used to screen 40 mobile phone dependence and 40 non-dependence college students, who were divided into two groups completed two conditions of Numerical Stroop Task with and without mobile phone ringing sound interference. Craving for mobile phone before and after the Numerical Stroop Task was assessed.@*Results@#Mobile phone dependence group had significantly more Stroop interference scores than mobile phone normal use group under the two conditions( F =19.34, P <0.01).After completing the Numerical Stroop Task under the interference condition, mobile phone dependence group experienced a significant boost craving of mobile phone ( t =-6.02, P <0.01). The scores of craving for mobile phones after the Numerical Stroop Task had significant positive relationships with Stroop interference scores( r =0.51, 0.51 , P <0.05).@*Conclusion@#The mobile phone dependence college students have poor inhibition control, inhibitory control which might associate with increase of craving for mobile phone.