759 research outputs found

    Proprioceptive training on dynamic neuromuscular control in fencers: a clinical trial

    Get PDF
    Fencing is a sport of agility, with a higher incidence of lower-limb injuries, of which the ankle sprain is the mostprevalent. Injury prevention is very important to improve performance and decrease the withdrawal time of athletes.Proprioceptive training programs can be added to the training of athletes, since, in addition to easy application and lowcost, proprioception has the function of stabilizing the ankle joint to prevent injuries.Objective:To verify the influence of a12-week proprioceptive training program on dynamic neuromuscular control in fencing athletes.Design:The study was aclinical trial, and the athletes were allocated, for convenience, in the intervention group or in the control group.Setting:The studywas developed in 4 stages (preintervention, intervention, postintervention, and follow-up of 3). The neuromuscular controlduring the star excursion balance test was evaluated.Participants:The participants were 19 fencing athletes (intervention group:10, and control group: 9), aged 14–35 years, from a multisport club.Interventions:The athletes performed the proprioceptivetraining during 12 weeks, 3 times a week, with a duration of 30 minutes.Main Outcome Measures:Dynamic neuromuscularcontrol.Results:The data and SE were considered for statistical analysis, submitted to the generalized estimates equations testwith Bonferroni post hoc. The level of significance was .05. The distance reached in the star excursion balance test increasedsignificantly in all 8 directions evaluated in the 2 legs of the intervention group.Conclusions:The proprioceptive trainingprogram was able to improve dynamic neuromuscular control in fencing athletes

    Radionuclide Migration: A Numerical Study

    Get PDF
    Crystalline rock has been considered as a potentially suitable matrix for high-level radioactive waste (HLW) repository because it is found in very stable geological formations and may have very low permeability. A common problem encountered in this context is the modeling of migration of radio nuclides in a fractured medium. Generally, this consists of a large main fracture, which is surrounded by a rock matrix. Transport in the main fracture is usually assumed to obey an advection-dispersion relation, while molecular diffusion is the assumed dominant mechanism of transport in the porous rock. In this work, a numerical study of the governing partial differential equations is done, to describe radionuclide movement in the fracture and within the rock matrix. The adopted physical system consists of the rock matrix containing a single planar fracture situated in water saturated porous rock. The initial radionuclide concentrations are assumed to be zero in both fractured and rock matrices. As inlet boundary condition, a kinetic solubility-limited dissolution model is used, in order to calculate the radionuclide concentration in the fracture. The solution of the governing partial differential equations was obtained by finite difference methods, namely: fully explicit, fully implicit and Crank-Nicolson discretization schemes. Note that the influence of the advective term was considered in the partial differential equation in the fracture, in such discretization schemes. It was shown that all numerical schemes are consistent and that the explicit method, in all configurations of the advective term, and the implicit methods and Crank-Nicolson, for the forward discretization in the advective term, presented stability conditions to be considered

    Análise cinesiológica do movimento chudan gyaku zuki

    Get PDF
    O objetivo deste trabalho é realizar uma análise cinesiológica do Gyaku Zuki (soco invertido do Karate). Tal técnica foi selecionada após a realização de um levantamento na literatura sobre sua freqüência de repetição nos Shiteigata das competições da World Karate Federation. Os grupos musculares predominantemente ativados são, no braço que golpeia, depressores, rotadores superiores e abdutores da cintura escapular, flexores e flexores horizontais do ombro, extensores do cotovelo e pronadores da radioulnar. O benefício mais claro desse estudo é possibilitar um treinamento de força direcionado para os grupos musculares apresentados, que atuam diretamente na execução do soco de Karate

    Prevalence of lip and perioral Ephelides in beach workers

    Get PDF
    BACKGROUND: Ephelides are small hyperpigmented macules common in the skin, presenting as areas with increased melanin production. Ephelides are observed in genetically predisposed individuals, particularly fair-skinned people highly susceptible to sunburn. OBJECTIVES: This study aimed to determine the prevalence of lip and perioral ephelides in 362 beach workers in the city of Natal (Rio Grande do Norte) and to investigate potential associations with sociodemographic, occupational and general health. METHODS: For this purpose clinical tests were performed by calibrated examiners in the epidemiological area around the lips and the area bounded laterally by the nasolabial groove and at the bottom by the chin. A questionnaire was completed and assessed. The possible associations between sociodemographic variables, occupational and general health with the presence of lip and perioral ephelides were evaluated by chi-square test for a significance level of 5%. RESULTS: Approximately one third of the workers were affected by perioral ephelides (33.7%) and around a quarter of them by lip ephelides (24.0%). Gender was the only variable significantly associated with the presence of perioral ephelides (p = 0.002), unlike lip ephelides which proved to be significantly associated with habits (p = 0.036) and alcoholism (0.030). CONCLUSIONS: The prevalence of ephelides in lip and perioral region was high in the study population, with gender and certain habits associated with its occurrence

    Use of Gamithromycin for the Treatment of Osteomyelitis Secondary to Foot Rot in a Sheep

    Get PDF
    Background: Lameness is one of the main causes of economic losses in sheep breeding, especially in the distal region of the limbs. Poor sanitation management, especially in terms of hygiene conditions and the introduction of animals without previous preventive care, is an important predisposing factor in sheep flocks. Interdigital phlegmon (foot rot) is a bacterial disease that causes pain, heat, edema, hyperemia in the region, and can lead to secondary processes such as osteomyelitis. This case report describes the use of gamithromycin for the treatment of osteomyelitis secondary to foot rot in a sheep.Case: An Ile-de-France ewe exhibiting signs of lameness, pain, heat, hyperemia and edema in the four digits was treated at the Veterinary Hospital of UNIPAMPA. The lesions were characterized by interdigital phlegmon, commonly known as foot rot, and the right thoracic limb was more affected, exuding a foul odor and purulent secretion. The affected limbs were treated topically with an antiseptic solution. The lesions healed completely except for the right thoracic limb, whose clinical condition worsened. Osteitis was suspected, and was confirmed by radiographic evaluation of the region. Treatment with ceftiofur was introduced, but proved to be ineffective. Nevertheless, the lesion was found to have worsened, and a new X-ray evaluation was made, which revealed dislocation of the distal phalanx as well as involvement of the middle and proximal phalanges. Thus, we decided to perform chemical arthrodesis of the distal interphalangeal joint. Before beginning this procedure, contrast X-rays were taken that revealed the development of a fistulous pathway connecting the distal interphalangeal joint to the proximal interphalangeal joint, which precluded this procedure. In view of the worsening of the condition, amputation of the distal and middle phalanges was performed, as well as scraping of the distal edge of the proximal phalanx. In the postoperative period, ceftiofur was used as antibiotic therapy and flunixin meglumine as analgesic, in addition to daily dressings with topical iodine. After this procedure, there was no improvement in lameness and the radiographic images showed worsening of the clinical condition. At this time, the antimicrobial therapy was replaced with tylosin. After beginning treatment with this antimicrobial, there was a slight decrease in lameness, but a fistulous pathway with purulent secretion was formed in the region corresponding to the distal portion of the first phalanx, as well as an increase in the bone lesion, which was observed radiographically. Due to the ineffectiveness of the drug therapy, it was replaced by gamithromycin, which was applied three times. After beginning this treatment, lameness receded and the wound stopped producing purulent secretion, and at the end of the applications of this active ingredient, there was complete resolution of lameness and improvement of the radiographic signs of the animal of this case report.Discussion: Antimicrobial therapy is an important factor in the treatment of interdigital phlegmon and of osteomyelitis, and should be performed properly using broad-spectrum antibiotics. In the case reported here, although antibiotics with those characteristics were used, the active ingredient had to be changed more than once. In this particular case, there was an improvement in the lameness and the wound, and in the radiographic signs of the proximal phalanx, only after the application of gamithromycin. Therefore, this drug can be considered as an alternative for the treatment of osteomyelitis in ruminants, especially in cases unresponsive to treatment with other antibiotics

    Co-inoculação in vitro de rizobactérias do semiárido visando sua aplicação como bioinoculante

    Get PDF
    O uso de fertilizantes nitrogenados é de suma importância para o fornecimento desse nutriente para as plantas. Contudo, a aplicação desses fertilizantes traz inúmeros problemas ambientais e sanitários. Uma alternativa a esses produtos químicos seria o uso de rizóbios — rizobactérias promotoras do crescimento vegetal naturalmente presentes na rizosfera e capazes de realizar a fixação biológica de nitrogênio. Através deste trabalho, nós propomos a co-inoculação de actinobactérias e rizóbios, visando a produção de um novo bioinoculante que substitua, pelo menos em parte, a adubação nitrogenada em leguminosas. É esperado que actinobactérias, pela produção de exoenzimas, possibilitem o crescimento dos rizóbios em meios de cultura inespecíficos para esses microrganismos. Foram utilizadas 10 cepas de actinobactérias com atividade celulolítica e xilanolítica estatisticamente distintas e sete cepas de rizóbios sem as referidas atividades enzimáticas. Uma co-inoculação dos microrganismos foi realizada em meios de cultura contendo carboximetilcelulose (CMC) e xilana como únicas fontes de carbono, e então, calculados seus índices de compatibilidade (IC). As cepas de actinobactéria A139 e A145 (ambas com IC = 0,857 no meio com CMC e IC = 1 no meio com xilana) apresentaram notável facilitação do crescimento dos rizóbios e tiveram apenas relação antagônica cada uma (ambas com o rizóbio L9 no meio com CMC). Essa interação biológica, denominada cross-feeding, ocorre quando microrganismos estimulam o crescimento um do outro e se mostra promissora para a prospecção de um bioinoculante, além de fornecer um panorama das relações ecológicas que ocorrem entre as rizobactérias promotoras do crescimento vegetal no Semiárido

    Avaliando Acessibilidade em Sistemas de Comunicação com Usuários Cegos

    Get PDF
    É possível perceber que muitas organizações estão tirando proveito dos Sistemas de Informação para facilitar a comunicação e o relacionamento com seus clientes. Mas é importante lembrar que esses sistemas deverão atender diferentes pessoas, sendo que algumas delas podem ter limitações física, motora, auditiva ou visual. A presente pesquisa teve por objetivo avaliar como as pessoas cegas interagem com os sistemas de conversação da rede SACI e do site TERRA. Foram identificados problemas que podem impedir ou dificultar o acesso e o entendimento do conteúdo e gerou-se recomendações que podem contribuir para que os sistemas sejam mais acessíveis e de fácil uso para esse grupo de pessoas

    Subsequent colic syndrome due to perirectal abscess in an equine model – Case report

    Get PDF
    Colic is the most frequent syndrome of equine digestive system, and impaction is the most common disease among its many etiologies. The small colon can suffer with intraluminal or extraluminal obstructions resulting from many causes. These obstructions present signs such as abdominal pain, poorly altered physiological parameters, dyskinesia and tenesmus. The aim of the present study is to describe a small colon impaction secondary to perirectal abscess in the pelvic musculature. The equine model was assisted at Veterinary University Hospital of Federal University of Pampa (Unipampa) and surgery was the therapy of choice; however, the animal ended up dying during anesthesia application. The ultimate diagnostic was provided by necropsy, which showed one abscess in the pelvic musculature, close to the terminal portion of the rectum. The relevance of the present study lies on the importance of using complementary diagnostic methods, as well as on the presentation of another cause of colic, which is little described in the literature. The present results allowed enhancing the prognostics and treatments applied to horses with this disease.

    Serum cytokine responses over the entire clinical-immunological spectrum of human leishmania (l.) infantum chagasi infection

    Get PDF
    The clinical-immunological spectrum of human Leishmania (L.) infantum chagasi infection in Amazonian Brazil was recently reviewed based on clinical, DTH, and IFAT (IgG) evaluations that identified five profiles: three asymptomatic (asymptomatic infection, AIsubclinical resistant infection, SRIand indeterminate initial infection, III) and two symptomatic (symptomatic infection, SIAmerican visceral leishmaniasis, AVLand subclinical oligosymptomatic infection, SOI). TNF-alpha, IL-4, IL-6, and IL-10 serum cytokines were analyzed using multiplexed Cytometric Bead Array in 161 samples from endemic areas in the Brazilian Amazon: SI [AVL] (21 cases), III (49), SRI (19), SOI (12), AI (36), and a control group [CG] (24). The highest IL-6 serumlevels were observed in the SI profile (AVL)higher IL-10 serum levels were observed in SI than in SOI or CG and in AI and III than in SOIhigher TNF-alpha serum levels were seen in SI than in CG. Positive correlations were found between IL-6 and IL-10 serum levels in the SI and III profiles and between IL-6 and TNF-alpha and between IL-4 and TNF-alpha in the III profile. These results provide strong evidence for associating IL-6 and IL-10 with the immunopathogenesis of AVL and help clarify the role of these cytokines in the infection spectrum.Instituto Evandro Chagas (Secretaria de Vigilancia em Saude, Ministerio da Saude, Brazil)Nucleo de Medicina Tropical (Universidade Federal do Para, Brazil)Laboratorio de Investigacao Medica (LIM)-50 (Hospital de Clinicas (HC)-Faculdade de Medicina (FM)-Universidade de Sao Paulo (USP), Brazil)Sao Paulo Research Foundation (FAPESP) [2006/56319-1]Parasitology Department, Evandro Chagas Institute, Surveillance Secretary of Health, Ministry of Health, Ananindeua, PA, BrazilAlbert Einstein Israelite Hospital, São Paulo, SP, BrazilDivision of Immunology, Federal University of São Paulo, São Paulo, SP, BrazilPathology Department, Medical School of São Paulo University, São Paulo, SP, BrazilTropical Medicine Nucleus, Federal University of Pará, Belém, PA, BrazilDivision of Immunology, Federal University of São Paulo, São Paulo, SP, BrazilFAPESP: 2006/56319-1Web of Scienc
    corecore