Avaliação isocinética em atletas da seleção brasileira de futebol de 5 / Isokinetic evaluation of Brazilian 5-a-side team / Evaluación isocinética en los atletas de la selección Brasileña de fútbol de 5

INTRODUÇÃO: A força muscular (FM) dos membros inferiores é um dos principais componentes exigidos para as ações específicas durante a prática do futebol de 5 e, quando apresentam níveis insuficientes, desequilíbrios bilaterais elevados ou acentuada diferença na razão agonista/antagonista (RAA) são fatores que contribuem para o desenvolvimento de lesões musculoesqueléticas. OBJETIVO: A proposta deste estudo foi avaliar os níveis de torque máximo, a diferença bilateral na produção de força e a razão convencional das musculaturas flexoras e extensoras do joelho em diferentes velocidades de execução. MÉTODOS: Participaram do estudo 11 atletas deficientes visuais. Os atletas foram submetidos à avaliação antropométrica para determinação da composição corporal e submetidos à avaliação com dinamômetro isocinético para a mensuração dos níveis de desequilíbrio muscular e razão convencional. RESULTADOS: Nos movimentos concêntricos da musculatura flexora foram observadas diferenças significativas no pico de torque (PT) entre os membros dominante (MD) e não dominante (MND) na velocidade de 60°.s-1 e 180°.s-1, no pico de torque normalizado (PTN) a 60°.s-1 e na velocidade de 180°.s-1 para os músculos extensores. Na RAA, observou-se diferença significativa entre MD e MND, e níveis aceitáveis de RAA em ambas as pernas, de acordo com o proposto para o futebol convencional. CONCLUSÃO: Espera-se que os resultados do presente estudo possam contribuir para os processos de prevenção, treinamento e reabilitação de atleta de futebol de 5, como também, servirem como parâmetros para futuros estudos. .

INTRODUCTION: Muscle strength (MS) of the lower limbs is one of the main components required for specific actions during practice of 5-a-side football and when the levels are insufficient, elevated bilateral imbalances or marked difference in agonist/antagonist ratio (AAR) are factors that contribute to the development of musculoskeletal injuries. OBJECTIVE: The purpose of this study was to assess levels of peak torque, bilateral difference in force production and conventional ratio of flexor and extensor musculature of the knee in different speeds. METHODS: The study included 11 visually impaired athletes. The athletes underwent anthropometric measurements to determine body composition and underwent evaluation at the isokinetic dynamometer to measure the levels of muscle imbalance and conventional ratio. RESULTS: In concentric movements of the flexor muscles, significant differences were observed in peak torque (PT) between the dominant limb (DL) and non-dominant limb (NDL) at 60° .s-1 and 180°.s-1, the peak torque standardized (PTS) at 60°.s-1 and 180 °.s-1 to the extensor muscles. In AAR, there was significant difference between DL and NDL, and acceptable levels of AAR in both legs according to the proposed for conventional football. CONCLUSION: It is expected that the results of this study may contribute to the processes of prevention, training and rehabilitation in athletes of 5-a-side football, also, serve as parameters for future studies. .

INTRODUCCIÓN: La fuerza muscular (FM) de los miembros inferiores es uno de los principales componentes necesarios para acciones específicas durante la práctica de fútbol de 5 y, cuando presentan niveles insuficientes, los desequilibrios bilaterales elevados o acentuada diferencia en la razón agonista/antagonista (RAA), son factores que contribuyen para el desarrollo de lesiones musculoesqueléticas. OBJETIVO: En este sentido, la propuesta del estudio fue evaluar los niveles de torque máximo, diferencia bilateral en la producción de fuerza y razón convencional de las musculaturas flexoras y extensoras de la rodilla en diferentes velocidades de ejecución. MÉTODOS: Participaron en el estudio 11 atletas con discapacidad visual. Los atletas fueron sometidos a evaluación antropométrica para determinación de la composición corporal y sometidos a evaluación en el dinamómetro isocinético para medir los niveles de desequilibrio muscular y la razón convencional. RESULTADOS: En los movimientos concéntricos de la musculatura flexora, se observaron diferencias significativas en el pico de torque (PT) entre los miembros dominantes (MD) y no dominante (MND) en la velocidad de 60°.s-1 y 180°.s-1, en el pico de torque normalizado (PTN) a 60°.s-1 y 180°.s-1 para los músculos extensores. En la RAA se observó diferencia significativa entre MD y MND, y niveles aceptables de RAA en ambas piernas de acuerdo con lo propuesto para el fútbol convencional. CONCLUSIÓN: Se espera que los resultados del presente estudio puedan contribuir para los procesos de prevención, entrenamiento y rehabilitación de los atletas de fútbol de 5, así como también que sirvan como parámetros para futuros estudios. .

Influence of long-term home noninvasive positive pressure ventilation on respiratory muscle strength in patients with stable severe chronic obstructive pulmonary disease / 中华全科医师杂志

Objective To study the influence of long-term home noninvasive positive pressure ventilation (HNPPV) on respiratory muscle strength in patients with stable severe chronic obstructive pulmonary disease (COPD).Methods Sixty-four patients with stable severe COPD discharged from Huabei Oil-field Hospital,Renqiu,Hebei were divided into two groups,one (n=24) with HNPPV plus conventional therapy,and the other (n=40) with conventional therapy plus long-term oxygen therapy as controls.All parameters were followed-up for one-year and compared for the two groups,including maximal iuspiratory pressure (MIP),transdiaphragmatic pressure (Pdi),maximal transdiaphragmatic pressure (Pdimax),ratio of Pdi/Pdimax,arterial partial pressure of carbon dioxide (PaCO2),forced expiratory volume in one second (FEV1),6-min walking distance (6MWD),mortality and re-hospitalization rate.Results Age,gender,course of the disease,body mass index (BMI),arterial PaCO2,PaO2,MIP,Pdi,Pdiraax,ratio of Pdi/ Pdimax,FEV1,ratio of FEV1/FVC%,6MWD and re-hospitalization rate of the patients between the two groups were all comparable (P>0.05).In one-year follow-up,PaCO2averaged (52±8)mm Hg,MIP (64±7) cm H2O,Pdi (33±5) cm H2O,Pdimax (101±9) cm H2O,Pdi/Pdimax (0.31±0.04),FEV1 (35±4) %,FEV1/FVC% (44±4) %,6MWD (272±26) m and (2.6 ± 0.8) admissions per year in the HNPPV group,significantly different from those in the control group [ (57 ± 6) mm Hg,(59 ± 6) cm H2O,(31±4) cm H2O,(84±7) cm H2O,(0.35±0.05),(33±3)%,(41±4)%,(212±28) m,and (3.7±0.8) admissions per year] (P<0.05).One death was observed in the HNPPV group (1/24) and three in the control group (3/4 0) in one - year follow - up,with no statistically significant difference (X2=0.00,P>0.05).Conclusions Long-term use of HNPPV for patients with stable severe COPD could efficiently improve their respiratory muscle strength and endurance,thus improving their pulmonary ventilation and treatment efficcacy.

Pneumothorax after Interventional Muscle and Soft Tissue Stimulation Therapy : A case report

Pneumothorax is the presence of gas in the pleural space. Traumatic pneumothorax results from penetrating or nonpenetrating chest injuries and iatrogenic pneumothorax occurs as a consequence of a diagnostic or therapeutic maneuver. When interventional muscle and soft tissue stimulation (IMNS) therapy is performed, iatrogenic pneumothorax is not common, but once it has occurred, it gives suffering and pain to both the patient and physician. We experienced three cases of iatrogenic pneumothorax after IMNS therapy. Commonly, the patients with peumothorax are treated with a tube thoracostomy on admission, but these patients can be simply treated with simple observation, oxygen inhalation and simple aspiration without admission and the results are satisfactory. Although iatogenic pneumothorax after IMNS therapy appears to be an rare, IMNS procedure still must be done with care.

Vasodilation in vitro of water decoction of Monkshood Root on rabbit pulmonary artery / 中成药

0.05) respectively. CONCLUSION: DMR can relax isolated rabbit pulmonary artery on the basis of endothelium-dependent and may involve in nitric oxide (NO), but is not related to blockage of receptor-operated and voltage-dependent calcium channels.