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Search Results: 1 - 10 of 7503 matches for " Condicionamento físico "
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Study of the some physicals variables how factors of the influence in judoistics lesions
Saray Giovana dos Santos,Maria de Fátima da Silva Duarte,Mauro Luciano Galli
Revista Brasileira de Cineantropometria e Desempenho Humano , 2001,
Abstract: The objective of this descriptive longitudinal tendency study was to analyze the infl uence of the length of time judo athletes had been practicing judo, their judo grade (belt color) and their physical preparation on the injuries they suffered over a 12-month period. Forty-two judo athletes took part in the fi rst evaluation, 18 in the second and eight in the last. The mean age of the group was 23.7 ± 7.4, with a mean time practicing judo of 6.7 ± 6.3 years and comprised 10 white belts, one blue, four yellow, fi ve orange, fi ve green, three purple, eight brown and six black belts. Data was collected where the judo athletes practiced, by means of physical evaluation tests and anthropometrical measurements. Data were analyzed using descriptive statistics, chi squared test, student’s t test, one way ANOVA and multiple regression analysis. The results demonstrated that: the group suffered 42 injuries; no association (p < 0.05) was found between judo grade and number of injuries (c2c = 3.71), or between time practicing judo and number of injuries (c2c = 0.12); the only signifi cant difference found was between the fi rst and second evaluation in relation to arm strength, (tc = -3,66), and when one-way ANOVA was applied no signifi cant difference was found in any of the variables. The multiple regression model (r2 = 0,63174), demonstrated that for 63,17% of the judo athletes, injuries can be explained by the effects of the aforementioned variables. The conclusion was that neither the time practicing judo nor the judo grade affected the number of lesions; however, there was interference by most of the variables inherent to physical preparation. RESUMO Este estudo, descritivo de tendência longitudinal, objetivou analisar a infl uência do tempo de prática, da gradua o judoística e do condicionamento físico nas les es sofridas pelos judocas em 12 meses. Participaram 42 judocas na primeira avalia o; 18 na segunda e 8 na última. O grupo apresentou média de idade de 23,7 ± 7,4 anos, com média de tempo de prática de 6,7± 6,3 anos, sendo dez faixas brancas; uma azul; quatro amarelas; cinco laranjas; cinco verdes; três roxas; oito marrons e seis pretas. A coleta de dados, realizada no local da prática, com aplica o de testes de avalia o física e medidas antropométricas. Os dados foram analisados mediante a estatística descritiva, teste Qui-Quadrado, teste “t” de Student, análise de variancia - ANOVA - ONE WAY e análise de Regress o Múltipla. Os resultados indicam que: o grupo apresentou 42 les es; n o se encontrou associa o (p<0,05) entre gradua o e número de l
Can neuromuscular fatigue threshold bedetermined by short and non-exhaustive bouts?. DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n3p254
Eduardo Bodnariuc Fontes,Alexandre Hideki Okano,Bruno de Paula Smirmaul,Leandro Ricardo Altimari
Revista Brasileira de Cineantropometria e Desempenho Humano , 2012,
Abstract: The present study determined the neuromuscular fatigue threshold (NFT) using four different time-periods of analysis of the electromyographic signal and compared these estimations with critical power (CP). Fifteen healthy young men (73.6 ± 5.1 kg, 177.8 ± 7.0 cm, 23.4 ± 5.2 years) performed 3-4 different severe constant workload trials until exhaustion on a cycle ergometer with simultaneous SEMG signals acquisition. The obtained data permitted NFT estimation with four different periods of analysis as follows: initial 30s (T30), 1min (T1), 2min (T2) and total time (TT), as well as CP. T30 and T1 were significantly higher than TT and CP and, T2 and TT did not differ between each other, and both were significantly higher than CP. In addition, TT was significantly correlated to CP (0.72; P < 0.05) and to T2 (0.58; P < 0.05). We conclude that NFT overestimates CP, independent of the time-period analysis used for its determination.
Effects of a step training program on anthropometric and body composition variables of female college students
Gleci Lurdes Gubiani,Candido Sim?es Pires Neto
Revista Brasileira de Cineantropometria e Desempenho Humano , 1999,
Abstract: The objective of this study was to analyze the effects of a step training program on the anthropometric and body composition variables of female college students. The subjects were 24 female undergraduate students, aged 18 - 25 years, and enrolled on a regular PE 100 class. Stature and body mass, circumferences(forearm, extended and fl exed arm, abdomen at umbilicus and waist level, buttock, thigh and calf); skinfolds (subescapular, triceps, biceps, chest, axillary, vertical abdomen, iliac-oblique, thigh and calf); sum of trunk skinfolds (total trunk, upper and lower trunk skinfolds); limbs skinfolds (upper and lower limb skinfolds) and total sum of skinfolds. Body density and % fat were estimated accordingly to equations published by Petroski (1995) and Siri (1961), respectively. Subjects were evaluated before and after 20 step training classes that met twice a week, lasting about 45 minutes each. Effort intensity was controlled by means of heart rate. Descriptive statistics and Student’s t test for dependent samples were used for data interpretation. It was concluded that step training signifi cantly promoted reduction (p < 0.05) of fi ve body circumferences, three skinfolds, regional and total skinfold sums and also % body fat and fat mass. ABSTRACT O objetivo deste estudo foi verificar se ocorrem altera es em variáveis antropométricas e da composi o corporal em universitárias, integrantes de um programa de “Step Training”. A amostra constitui-se de 24 universitárias, com idade entre 18 e 25 anos, que freqüentaram o CEF100 (Dec. no. 69,450/71). Mensuraram-se massa e estatura corporais; perímetros (antebra o, bra o relaxado e contraído, abd men umbilical e cintura, glútea, coxa e panturrilha); dobras cutaneas (subescapular, tríceps, bíceps, peito, axilar média oblíqua, abd men vertical, suprailíaca oblíqua, coxa e panturrilha) e somatório de dobras cutaneas do tronco (tronco total, superior, e inferior); dos membros (membros, superior e inferior) e de todas as dobras cutaneas. A densidade corporal foi estimada através da equa o de Petroski (1995) e o %G através da equa o de Siri (1961). Entre o pré e o pós - teste, realizaram-se 20 sess es de atividades de ”Step”, com freqüência bi-semanal, dura o aproximada de 45 minutos e a intensidade controlada através da FC. Utilizou-se a estatística descritiva, o teste t Student para amostras dependentes, para análise dos dados. Conclui-se, com base nos resultados, que houve diferen as estatisticamente significativas (p £ 0,05), em 5 perímetros corporais, em 3 dobras cutaneas e na gordura regional e total,
Efectos del ejercicio físico aeróbico sobre algunos mecanismos de defensa humanos Effects of aerobic exercise on some human defense mechanisms
Domingo Caraballo Gracia,Ofelia Chacon
Iatreia , 1992,
Abstract: Se hace una descripción somera de los cambios que tienen lugar en los mecanismos de defensa Inmunes y no Inmunes como resultado de la práctica del ejercicio físico aeróbico; se Incluyen cambios cualitativos y cuantitativos en los leucocitos polimorfonucleares, en los monocitos y en las diferentes poblaciones de Linfocitos. Se alude también a los cambios en la flora normal ya otras alteraciones de la piel que pueden favorecer la presencia de infección en los deportistas. This is a brief description of the changes that may take place in the immune and non-immune mechanisms of defense as a result of the practice of aerobic sports; It includes qualitative and quantitative changes in the different kinds of white blood cells as well as alterations of the skin that may favor infections in sportspersons.
Avalia o do registro do exame físico realizado por doutorandos e residentes no Servi o de Medicina Interna do Hospital S o Lucas - PUCRS
Barrios, Carlos Henrique et al.
Scientia Medica , 2005,
Abstract: Objetivo: Neste estudo avaliamos o registro de determinados segmentos do exame físico realizado por acadêmicos do 6o ano e médicos residentes em pacientes internados na unidade de Medicina Interna no Hospital S o Lucas da PUCRS. Métodos: Seguindo um protocolo previamente estabelecido, foram avaliados retrospectivamente 120 prontuários escolhidos de forma aleatória, entre o período de janeiro de 2000 a mar o de 2002. Resultados: Embora alguns segmentos do exame s o registrados em mais de 90% dos casos (exame cardiovascular, pulmonar e abdominal), o exame é incompleto em todos os prontuários. O exame neurológico exemplifica um problema particularmente sério que identificamos nesta avalia o. Mesmo em pacientes que apresentam sintomas ou queixas neurológicas o exame n o é realizado ou registrado adequadamente. Alguns segmentos específicos como exame de linfonodos, tireóide, fundoscopia, otoscopia, toque retal, testículos ou mamas s o registrados somente numa minoria absoluta dos casos. Conclus o: Entendemos que a falta de modelo e orienta o por parte do corpo de professores é o principal motivo que explica esta situa o. A necessidade de reverter esta realidade, desenvolvendo estratégias eficazes é imperativa.
Imers?o em água quente no controle pós-colheita da podrid?o branca em ma??s cv. Fuji
Lunardi, Rosangela;Sanhueza, Rosa M. V.;Bender, Renar J.;
Fitopatologia Brasileira , 2003, DOI: 10.1590/S0100-41582003000400015
Abstract: the objective of the present study was to evaluate the efficacy of heat treatments on the control of white rot caused by botryosphaeria dothidea on 'fuji' apples (malus domestica). apples were immersed for either 1, 2 or 3 min in hot water at 47, 49 or 52 °c. before the heat treatments, the apples were inoculated with the fungus b. dothidea. after the treatments, apples were stored at 0-1 °c in controlled atmosphere (ca) with 1.2 - 1.6 kpa o2 and 0.2 - 0.4 kpa co2 or in refrigerated air storage for one, three or five months. after each storage period, samples were transferred to room temperature for seven days and evaluated for lesion diameter and quality parameters. hot water heat treatment at 47 °c for 3 min reduced lesion diameter of fuji apples under ca storage. the ca storage resulted in better quality apples.
Imers o em água quente no controle pós-colheita da podrid o branca em ma s cv. Fuji
Lunardi Rosangela,Sanhueza Rosa M. V.,Bender Renar J.
Fitopatologia Brasileira , 2003,
Abstract: O objetivo do presente trabalho foi determinar o efeito do tratamento com água quente no controle da podrid o branca (Botryosphaeria dothidea) em ma s (Malus domestica) cv. Fuji. Os tratamentos foram combina es de três tempos de imers o em água quente (1, 2, e 3 min) e três temperaturas da água (47, 49 e 52 °C), utilizando frutos inoculados com o patógeno. As ma s foram armazenadas na temperatura de 0-1 °C em atmosfera controlada (AC) de 1,2 a 1,6 kPa de O2 e 0,2 a 0,4 kPa de CO2 e em ar refrigerado (AR). As amostras armazenadas foram avaliadas ao final um, três e cinco meses em AC ou AR mais sete dias em temperatura ambiente. Avaliou-se o diametro de les o e variáveis da qualidade dos frutos. Os tratamentos de imers o em água quente reduziram o tamanho das les es das ma s quando o tratamento foi de 47 °C por 3 min em armazenamento em AC. A armazenagem em AC manteve melhores as características qualitativas das ma s.
Mens sana in corpore sano
Daniel Sanabria
Ciencia Cognitiva : Revista Electrónica de Divulgación , 2010,
Abstract: La práctica de ejercicio físico mejora la salud cardiovascular y respiratoria. Sin embargo, el efecto del ejercicio físico sobre el rendimiento cognitivo es menos conocido. Revisamos aquí brevemente el estado de la investigación actual en el ámbito de la relación entre ejercicio físico y rendimiento cognitivo.
Viabilidade de Sclerotinia sclerotiorum após a solariza??o do solo na presen?a de cobertura morta
Ferraz, Leila C. L.;Bergamin Filho, Armando;Amorim, Lilian;Nasser, Luiz C. B.;
Fitopatologia Brasileira , 2003, DOI: 10.1590/S0100-41582003000100003
Abstract: the effects of temperatures and crop mulch on topsoil in the inactivation of the sclerotia of sclerotinia sclerotiorum were studied by oven heating in three field experiments during three months. field experiments were performed in piracicaba and in brasília. sclerotia were produced in a carrot+cornmeal medium, incorporated into the soil (oven-heating), conditioned in nylon bags, and buried in the soil at 5, 10 and 30 cm (field). the soil treatments in the field were: solarization (s), non-solarization (ns), and solarized soil added to crop mulch (ps). sclerotia samples were collected every 30 days to observe the viability and presence of contaminants in neon medium. the oven heating of the soil at 50 and 60o c and the use of diverse crop mulch inactivated the sclerotia, which had a higher incidence of contaminants. in the field, the effect of soil solarization was significant. the sclerotia were killed in s after 90 days at three depths in the first experiment and in ps after 60 days at 5 and 10 cm in the other two experiments. the incidence of contaminants in sclerotia in solarized soils was significantly higher in s, followed by ps; however, a greater variability of contaminants was observed in ps. temperatures of the soil in ps were higher when compared to the other treatments at the same depth. this factor reduced the inactivating time of the sclerotia from 90 days in s, to 60 days in ps.
Solariza??o para controle de Phytophthora parasitica em mudas de citros
MAY-DE MIO, LOUISE L.;GHINI, RAQUEL;KIMATI, HIROSHI;
Fitopatologia Brasileira , 2002, DOI: 10.1590/S0100-41582002000300003
Abstract: solarization has been efficient in controlling soil borne pathogens. phytophthora parasitica, the causal agent of root rot in citrus (citrus spp.) nurseries, is usually treated by using methyl bromide for soil disinfestations. this product is highly toxic to man as well as to the soil microbial community. solarization was efficient in both winter and summer p. parasitica pre-colonized substratum. the winter experiment was arranged in a randomized block design with eight treatments (solar collector 24 h and 48 h, plastic bag 24 h and 48 h, solar collector 48 + trichoderma spp., trichoderma spp., inoculated and non-inoculated control at shadow), with four repetitions using 15 plants/parcel. inoculated treatments were solarized and used to fill the containers where seedlings were transplanted. evaluation was made by means of bait test for recovering pathogen and by citrus seedling development three months later. for summer solarization, the effect in plastic bags was evaluated at one, two, seven and 14 days. this evaluation was made by bait test. results showed that the solarization of substratum for seedling production eliminates p. parasitica in solar collectors (10-cm-diameter containers) for 24 h in winter as well as in summer (allowing a better seedling growth), and in plastic bags (20 x 25 x 4 cm3) for 48 h in summer.
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