ABSTRACT
ABSTRACT Introduction: Medicine Ball training has a long history as a training to strengthen the musculature of athletes, and tennis requires high explosive muscle strength in the upper limbs of its athletes. Objective: Explore whether medicine ball training can significantly improve explosive forearm strength in tennis players. Methods: 100 professional tennis players with a mean age of 21 years were selected and randomly divided between the experimental and control groups. During 12 weeks of conventional tennis training, an extra training protocol, with Medicine Ball, was added to the experimental group. Results: After the experiment, the performance of the experimental group showed expressive signs of evolution: the forward throwing distance increased by 13.23%, the backward throwing distance increased by 11.96%, the solid ball throwing distance increased by 18.93%, and the touch distance with vertical jump increased by 1.98%. An increase in the experimental group's overall velocity was also observed, by 18.37%. While the control group did not show expressive changes. Conclusion: The explosive strength of the tennis players' upper limbs can be effectively improved through the Medicine Ball training presented. The tennis players' overall speed also benefited, reflecting the improvement of the tennis players' specific performance. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
RESUMO Introdução: O treinamento da bola medicinal tem uma longa história como treinamento para fortalecer a musculatura dos atletas e o tênis requer uma elevada força explosiva muscular nos membros superiores de seus atletas. Objetivo: Explorar se o treinamento com bola medicinal pode melhorar significativamente a força explosiva no antebraço dos tenistas. Métodos: Foram selecionados 100 tenistas profissionais com idade média de 21 anos, divididos aleatoriamente entre grupo experimental e controle. Durante 12 semanas de treinamento convencional de tênis, ao grupo experimental adicionou-se um protocolo de treinamento extra, com a bola medicinal. Resultados: Após o experimento, o desempenho do grupo experimental demonstrou sinais expressivos de evolução: a distância de arremesso à frente aumentou em 13,23%, a distância de arremesso atrás aumentou em 11,96%, a distância de arremesso de bola sólida aumentou em 18,93%, e a distância de toque com salto vertical aumentou em 1,98%. Observou-se também uma elevação da velocidade geral do grupo experimental, em 18,37%. Enquanto o grupo controle não demonstrou alterações expressivas. Conclusão: A força explosiva do membro superior dos tenistas pode ser efetivamente aprimorada através do treinamento de bola medicinal apresentado. A velocidade geral dos tenistas também é beneficiada, refletindo na melhora do desempenho específico dos jogadores de tênis. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.
RESUMEN Introducción: El entrenamiento con balón medicinal tiene una larga historia como entrenamiento para fortalecer la musculatura de los deportistas y el tenis requiere una elevada fuerza muscular explosiva en los miembros superiores de sus deportistas. Objetivo: Explorar si el entrenamiento con balón medicinal puede mejorar significativamente la fuerza explosiva del antebrazo en jugadores de tenis. Métodos: Se seleccionaron 100 tenistas profesionales con una edad media de 21 años, divididos aleatoriamente entre el grupo experimental y el de control. Durante 12 semanas de entrenamiento convencional de tenis, se añadió al grupo experimental un protocolo de entrenamiento extra, con balón medicinal. Resultados: Tras el experimento, el rendimiento del grupo experimental mostró signos expresivos de evolución: la distancia de lanzamiento hacia delante aumentó un 13,23%, la distancia de lanzamiento hacia atrás aumentó un 11,96%, la distancia de lanzamiento con balón sólido aumentó un 18,93%, y la distancia de toque con salto vertical aumentó un 1,98%. También se observó un aumento de la velocidad global del grupo experimental, en un 18,37%. Mientras que el grupo de control no mostró cambios expresivos. Conclusión: La fuerza explosiva del miembro superior de los tenistas puede mejorarse eficazmente mediante el entrenamiento con balón medicinal presentado. La velocidad general de los tenistas también se ve beneficiada, reflejándose en la mejora del rendimiento específico de los tenistas. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.
ABSTRACT
OBJECTIVE@#To improve the accuracy of diagnosis and treatment efficacy of hemangiopericytoma in nasal cavity and paranasal sinuses.@*METHOD@#The clinical and pathological data of 5 cases with hemangiopericytoma in nasal cavity and paranasal sinuses verified by pathology were analyzed retrospectively.@*RESULT@#Computed tomography scan revealed vascular in 5 cases. On CT scan, hemangiopericytoma generally appeared to be a uniform high density mass with obvious enhancement upon injection of contrast material. In pathological examination, there were plentiful capillaries which were like tree branch. The normal endocytes were in the inner wall of the vessel. The round, oval and spear-like pericytes scattered around the vessel. The split phase of the nucleus could be found in the tumor cell. All cases underwent surgical resection and were proved by pathological examination. The clinical data showed that the prognosis of sinonasal hemangiopericytoma was closely related to its histological grade. The recur rate in highly malignant hemangiopericytoma was obviously higher than that in middle and low malignant tumor. The rate of misdiagnosis was 80%.@*CONCLUSION@#Hemangiopericytoma is a potentially malignant tumor. Medical imaging can help to demonstrate the site, configuration, and characteristics of the tumors and contribute to the treatment. But there are not characteristic medical features. The final diagnosis must depend on the closely related to its pathological grade. The doctor should pay attention to the description of histological pathology. All the patients must be followed up carefully.
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Follow-Up Studies , Hemangiopericytoma , Diagnosis , Pathology , Nasal Cavity , Pathology , Paranasal Sinus Neoplasms , Diagnosis , Pathology , Retrospective StudiesABSTRACT
Objective To explore the thoracic CT manifestations and pathologic basis of pulmonary Wegener granulomatosis (WG),in order to improve the diagnostic accuracy.Methods Eighteen patients with pulmonary WG confirmed by pathology were collected.All the patients underwent CT scan and enhanced scan with 64-slice volume CT.CT features and clinical symptoms were retrospectively reviewed.Results The pathological manifestations of 18 cases with pulmonary WG were miscellaneous,including necrotizing granuloma infiltrated with inflammatory cells,intrapulmonary vasculitis,parenchymal necrosis,hemorrhage of pulmonary alveolus,microabscess and so on.Thoracic CT manifestations:multiple nodules were seen in 7 cases,multiple masses were detected in 4 cases,cavitations showed in 10 cases,peripheral wedge-shaped shadows showed in 2 cases,ground-glass attenuation and consolidation showed in 2 cases,bronchial wall thickening in 2 cases,solitary pulmonary nodule or mass in 3 cases,pleural effusion was seen in 5 cases.All the nodules,masses and cavitations demonstrated inhomogeneous and ring enhancement on contrast-enhanced images.Some patients presented with varied kinds of the above lesions,which could transform each other and became more or less.Conclusions Pulmonary WG has many pathological manifestations,resulting in the variety of the thoracic CT manifestations.The main manifestations are multiple nodules and multiple masses,necrotic cavitations.The feeding vessel sign to a nodule or mass and ring-shade cavity are relatively characteristics to diagnose pulmonary WG.The correct diagnosis could be established on the bases of understanding of the special developments and pathology of the lesions.