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Search Results: 1 - 10 of 209301 matches for " Betancourt León "
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Acordes arrítmicos del color de la piel del bailarín de la Escuela Cubana de Ballet
Betancourt León, Hamlet;
Cuicuilco , 2009,
Abstract: the color of the skin is a class within the systemic model of the body of the cuban ballet dancer. many cubans, who are not dancers, consider the color of the skin like one of the main characteristics to be taken in account to enter and to successfully remain in the ballet field. the objective of this research paper is to determine the impact of the skin color in the appreciation of the scenic body beauty of the ballet dancer within the cuban field. the empirical evidences, over which the thesis and interpretations stand, arise from a five year long period of ethnographical fieldwork among the main institutions of the cuban ballet field. the color of the skin integrates hierarchically the evaluation of the scenic corporal beauty of the cuban dancer realized by a sector of the social field and no other considers it. the kind of skin color discrimination was expressed by depreciating the scenic body beauty of black and brown dancers of cuban field compared to the white skin dancers. the facts pointed out frequently practices of kind of skin color discrimination at the professional area than for student system in the social field.
Análisis longitudinal de los indicadores Peso-Edad, Talla-Edad y Peso-Talla en adolescentes de la Escuela Nacional de Ballet de Cuba
Betancourt León,Hamlet; Díaz,María Elena;
Anales Venezolanos de Nutrición , 2005,
Abstract: ballet is considered an artistic manifestation with an anatomical selective matter approach that makes emphasis in the artists linearity and thinness. the objective of this investigation is to assess the body weight and the stature of the dancers of the cuban national school of ballet in two moments of its growth. a cohort study in 54 girls and 40 boys, between 15 and 20 years old was carried out. weight and stature were measured in order to determine the indexes weight for age, height for age and t weight for height. the main results show significant increments of weight and stature for ages in the two sexes. in the analysis of body weight of the ballet dancers, the estimation of body composition and the evaluation of pubertal and skeletal development are mandatory in order to generate an adequate diagnosis. height for age tables, used in the cuban public health system are good for measuring changes and for predicting final height in the dancers studied. the cuban charts for weight for age and weight for height don't describe accurately, the changes of weight for age, or the relationship of weight for stature for the dancers of both sexes
Kinanthropometric profile of cuban women olympic volleyball champions
Wiliam Carvajal,Hamlet Betancourt,Sofia León,Yanel Deturnel
MEDICC Review , 2012,
Abstract: INTRODUCTION: Athletes' kinanthropometric profiles are widely addressed in the scientific literature. Such profiles are particularly important in volleyball because absolute size contributes a significant percentage of total variance associated with athletic success. As in other team sports, volleyball players' kinanthropometric attributes correlate with the game's tactical demands. From 1992 through 2000, the Cuban women's volleyball team achieved top global performance, winning first place in three successive Summer Olympic Games. OBJECTIVE: Describe the kinanthropometric profiles of Cuban women Olympic volleyball champions during 1992-2000 and compare these by position played. METHODS: Measurements were taken of body composition, somatotype, proportionality and several anthropometric indicators in 41 Cuban women volleyball players, grouped by playing position. All were members of the national team that participated in the Summer Olympic Games in Barcelona (1992), Atlanta (1996) and Sydney (2000). Mean and standard deviations were calculated for all study variables. Analysis of variance was used to compare means for different positions for the variables weight; height; percent adipose, muscle and bone mass; body mass index; and muscle-to-bone ratio. Discriminant analysis was performed to identify anthropometric dimensions differentiating playing positions (center, spiker and setter), using p<0.05 as significance threshold. Results were presented in tables and figures. RESULTS: Centers presented greater absolute size and higher average adipose (22.8±1.7 kg) and bone (7.1±0.6 kg) mass. The mean somatotype of all volleyball players was balanced mesomorphic (2.7-3.6-2.9). Classified by position, centers (2.9-3.4-3.4) and spikers (2.8-3.6-2.9) presented an average mesomorphic-ectomorphic somatotype, and setters (2.6-3.7-2.6) were balanced mesomorphic. On assessing Somatotype Attitudinal Mean (SAM), centers and spikers showed more intrapositional homogeneity than that of setters. Centers were significantly taller (187.1±2.5 cm) than players in other positions. Centers' percent adipose tissue mass (28.9±2.7%) was significantly higher than that of setters (24.3±2.7%), who were leanest of all positions. CONCLUSIONS: The kinanthropometric profile of Cuban women Olympic volleyball champions was defined by considerable muscular-skeletal development, with a predominantly mesomorphic somatotype and low endomorphy. Height and body composition varied significantly by playing position.
Estudio in vitro de las propiedades antioxidantes de olanzapina en neutrófilos humanos
Franklin Vargas,Cristy León,Belén Betancourt,Kerly Pérez
Salus Online , 2008,
Abstract: There is accumulating evidence to suggest that the excess of free radicals formation may play a critical role in the etiology of schizophrenia. In addition, it has been shown that the in vivo treatments with atypical antipsychotics can decrease the blood oxidative stress markers. However, a previous in vitro report has indicated that the antipsychotic drug clozapine (CLZ) primed the respiratory burst as well as delayed the spontaneous apoptosis of human polymorphonuclear cells (PMNs). Because these findings, the present study was undertaken to evaluate the effects of olanzapine (OLZ), a CLZstructurally related antipsychotic drug, on function and viability of PMNs. Results: the OLZ effects on viability and functioning of PMNs were clearly different from those previously reported for CLZ. For example, after a treatment with 20-50 μmol/L OLZ, a significant inhibition of the respiratory burst in activated PMNs was observed whereas under the same conditions, spontaneous apoptosis was accelerated. On the contrary, when hydrogen peroxide (H2O2) was exogenously added, the PMN apoptosis was dose-dependently inhibited by OLZ in the entire range of concentrations whereas when H2O2 was intracellularly generated, the induced apoptosis was only decreased at 2 μmol/L OLZ. Absorbance scans revealed that OLZ reacts with equimolar quantities of either H2O2 or hypoclorous acid (HOCl). Taken together, these results suggest that OLZ is an antioxidant agent because it can inhibit both the ROS-induced PMN apoptosis and the respiratory burst. These effects are probably due to extracellular scavenging of released ROS.
Neuroendoscopia: Utilidad en el manejo de la hidrocefalia en ni?os de países en vías de desarrollo
Jiménez-León,Juan C.; Jiménez,Cristina S.; Betancourt,Yaline M.;
Medicina (Buenos Aires) , 2007,
Abstract: hydrocephalus is a huge burden, specially in the poor countries with a big proportion of sick children with this condition, against the countries with good sanitarian conditions. in latinamerica the most common etiological factors of hydrocephalus are associated with bad prenatal controls, neonatal sepsis and consequent meningitis and ventriculitis. the hydrocephalus is a consequence of the damage in the circulation of the cerebrospinal fluid (csf). neuroendoscopy specially third ventriculostomy, associated in some patients with choroid plexus cauterization, represents an alternative method to manage this condition avoiding shunts and its complications. endoscopic third ventriculostomy (etv) alone or with choroid plexus cauterization (cpc) is an emerging and very useful technique to manage hydrocephalus specially in children with: ventriculitis as a consequence of meningitis, myelomeningocele, obstructive hydrocephalus idiopathic or seconday to posterior fossa tumors. one hundred consecutive children (100) underwent ventriculoscopy preceding evt as an initial treatment of hydrocephalus since january 2001 to july 2006, median age was 15.5 months with a range between 2-48 months, 55% are males of our institution in valencia, venezuela. we describe the normal and pathological ventricular anatomy with emphasis in the endoscopic technique and its challenges. we present how the evt works to prevent the shunt implantation. in the future, neuroendoscopy prevents the use of shunts to treat hydrocephalus in children, avoiding its complications and cost. neuroendoscopy is a neurosurgical technique everyday most common to manage hydrocephalus and intraventricular lesions in the world. we report an algorythm to use in children younger than 1 year of age with postinfectious hydrocephalus (pihc) or associated with myelomeningocele. we stress the use of evt as an alternative because of its low cost to treat hydrocephalus avoiding the complications and dependency of shunts.
Composición de masas corporales de bailarinas de ballet y atletas de elite de deportes estéticos de Cuba
Betancourt León, Hamlet;Salinas Flores, Oscar;Aréchiga Viramontes, Julieta;
Revista Brasileira de Cineantropometria & Desempenho Humano , 2011, DOI: 10.5007/1980-0037.2011v13n5p335
Abstract: the level of scenic beauty of the ballet dancer figurine is determined by a set of morphofunctional characteristics that are exclusively valid for this modality. female ballet dancers and aesthetic sport athletes share the characteristic of being slim and of efficiently executing the complex movements of their technical activities. the objective of this study was to compare the body composition of female ballet dancers and elite female athletes participating in artistic gymnastics (ag), rhythmic gymnastics (rg), and synchronized swimming (ss). thirty-two female ballet dancers of the national ballet school and 63 elite aesthetic sport athletes from cuba were studied. an anthropometric protocol consisting of 16 measures was applied to calculate the body composition indexes. overall body fat percentage (bf) was significantly higher in dancers when compared to the ag and rg groups, but was similar to that of the ss group. overall muscle mass percentage (mm) was significantly higher in the ag and rg groups than in dancers. the ballet group showed the minor differential pm-bf and muscular percentage of the transverse areas of the segments of extremities than the elite athlete groups. differences in the body composition indexes were observed between the ballet group and the aesthetic sport groups. the results obtained indicate a lower efficiency of technical transitive movement in female ballet dancers.
Neuroendoscopia: Utilidad en el manejo de la hidrocefalia en ni os de países en vías de desarrollo Neuroendoscopy: Its usefulness in the hydrocephalus management of children in developing countries
Juan C. Jiménez-León,Cristina S. Jiménez,Yaline M. Betancourt
Medicina (Buenos Aires) , 2007,
Abstract: La Hidrocefalia Infantil es una carga enorme para todos los países, especialmente para los no desarrollados, donde la proporción es mayor si se compara a países con niveles sanitarios desarrollados. En Latinoamérica las causas de hidrocefalia más comunes están ligadas al mal control prenatal y a la sepsis neonatal, con meningitis y ventriculitis, produciendo hidrocefalia como consecuencia de da o en el sistema de drenaje del líquido cefalorraquídeo (LCR). Las técnicas neuroendoscópicas: Tercer la ventriculostomía y cauterización de los plexos coroides son una alternativa viable para el control de estos pacientes evitando la colocación de sistemas de derivación ventrículo peritoneales (DVP) y sus complicaciones en el manejo y seguimiento. La Tercer Ventriculostomía asociada a la cauterización de los plexos coroides (TV-CPC), es una técnica cada día más usada para el control de la hidrocefalia infantil, secuelar a estados post ventriculitis o a espina bífida (mielomeningoceles). Presentamos la anatomía ventricular normal, las anormalidades asociadas a estados post ventriculitis, y la ventriculoscopia vista en pacientes con Mielomeningocele. Describimos cómo funciona la TV y como evita la colocación de shunts en muchos ni os hidrocefálicos. Presentamos nuestra experiencia inicial con 100 pacientes consecutivos en nuestra Institución en Valencia, Venezuela. La utilidad de la neuroendoscopia para el control de la hidrocefalia infantil va a permitir el menor uso de válvulas y por ende de sus complicaciones. Presentamos los datos clave en el uso de la técnica y su algoritmo en ni os menores o mayores de un a o con hidrocefalia post infecciosa o asociada a mielodisplasias. Insistimos en el uso de esta técnica como alternativa de la dependencia de las válvulas y sus complicaciones. Hydrocephalus is a huge burden, specially in the poor countries with a big proportion of sick children with this condition, against the countries with good sanitarian conditions. In Latinamerica the most common etiological factors of hydrocephalus are associated with bad prenatal controls, neonatal sepsis and consequent meningitis and ventriculitis. The hydrocephalus is a consequence of the damage in the circulation of the cerebrospinal fluid (CSF). Neuroendoscopy specially third ventriculostomy, associated in some patients with choroid plexus cauterization, represents an alternative method to manage this condition avoiding shunts and its complications. Endoscopic third ventriculostomy (ETV) alone or with choroid plexus cauterization (CPC) is an emerging and very useful technique to ma
Anthropometric evaluation of body composition in ballet dancers. A longitudinal study
Hamlet Betancourt León,Julieta Aréchiga Viramontes,Maria Elena Díaz Sánchez
Revista Brasileira de Cineantropometria e Desempenho Humano , 2008,
Abstract: The body of the adolescent dancer is the result of morphological, physiological and behavioral adaptations due to specific physical training. For the ballet master, body weight is irrelevant to evaluating the technical and artistic performance and beauty of a figure. All ballet dancers must have bodies that conform to the canon of international ballet in order to be able to perform in public. The purpose of this study is to describe the changes in the body composition of dancers at the Cuban National School of Ballet between two points in their training process. This was a longitudinal study of 54 girls and 40 boys, aged between 15 and 20 years old. An anthropometric protocol of 6 measurements was employed in order to determine body composition using the Durnin and Rahaman method for females and the Parizková and Buzková method for males. The main results demonstrate signifi cant increases in both weight and height for age in both sexes, and it was observed that height growth velocity decreased with age. The female dancers exhibited stable body fat percentages for all ages while male dancers signifi cantly reduced this percentage from one year to the next. The female students exhibited higher mean percentage body fat values than the normal range established in Cuba for elite athletes from competitive artistic sports and professional dancers, while the male students exhibited body fat percentages that were similar to these specialized groups. Resumo El cuerpo humano del bailarín adolescente es resultado de las adaptaciones orfológicas-fi siológicas y conductuales de un entrenamiento físico particular. Para los maestros de ballet el peso corporal no es relevante en la evaluación técnica-artística y de belleza de la fi gura del danzante. Cada bailarín tiene que cumplir con los cánones internacionales de fi gura del ballet para presentarse en el escenario artístico. El objetivo de esta investigación es describir las variaciones de la composición corporal de los bailarines de la Escuela Nacional de Ballet de Cuba en dos momentos del proceso de entrenamiento. Se analizaron a través de un estudio longitudinal 54 bailarinas y 40 bailarines con edades entre 15 y 20 a os. Se aplicó un protocolo antropométrico de 6 mediciones para estimar la composición corporal, empleándose las ecuaciones de Durnin y Rahaman, sexo femenino y Parizková y Buzková, sexo masculino. Los bailarines manifestaron incrementos signifi cativos de peso y estatura; la velocidad de crecimiento de la estatura disminuyó con la edad para los dos sexos. En las bailarinas de todos los grupos etario
Recaídas locales posterior a tratamiento radical evaluación de infiltración del complejo areola-pezón
Bergamo,Laura; Bolívar,Efrén; Godoy,Alí; Carrero,Nelly; Betancourt,Luis; Romero,Gabriel; Salas,Joanne; León,Juan;
Revista Venezolana de Oncología , 2010,
Abstract: objective: the experience in our institution during the period 2004-2005 in local recurrence of breast cancer. method: realized study clinical, retrospective, descriptive during 2004-2005, in patients with radical treatment, adjuvant radiation therapy and chemotherapy if exist indication. some received neoadjuvant chemotherapy. results: 167 patients underwent radical mastectomy. histological diagnostic was 80 % (128) ductal infiltrante carcinoma, 4.19 % in situ carcinoma. the more frequent localization was mammalian center 35.48 %. 3.65 % was stage i, 35.58 % stage ii 53.65 %, stage iii 6.09 % stage iv. 57 patients (34 %) with neoadjuvant chemotherapy. we realized 161 radical mastectomy madden type (94.7 %), 2 radical mastectomy patey type and 4 mastectomy total simple 2 with node sentinel. 29 (17.36 %) had infiltration to the areola nipple zone. 20 (68.96 %) were localized in center mammalian region. the average age was 53.6 years, 18 patients (62.07 %) were ubicated in stage iii (37.93 %), 72.94 % received adjuvant chemotherapy. 61.76 % received radiation therapy, 15 (51.72 %) patients were alive without disease, 1 live with local recurrence, 5 staying alive with systemic disease and 6 (20.67 %) dead by the disease. the control average was 36.14 month. 5 patients of the total (2.9 %) presented local recurrence. conclusion: the radical mastectomy is a therapeutically first arm, the local recurrence index are minor in the special centers. the infiltration of the areola nipple complex is more frequent in the center mammalian region.
Tratamiento preservador del cáncer de la mama: Dos a?os de experiencia
Bergamo,Laura; Bolívar,Efrén; Godoy,Alí; Carrero,Nelly; Betancourt,Luis; Romero,Gabriel; Salas,Joanne; León,Juan;
Revista Venezolana de Oncología , 2011,
Abstract: objective: presented the experience in our institution in the conservative treatment of breast cancer, we analyzed the surgery, local recurrence, and the global super life, and the disease free survival. method: these are a descriptive and retrospective study during 2004-2005 in patients underwent conservative treatment: realize of partial oncology mastectomy with negative margins surgical evaluation of axillaries sentinel node technique or axillaries dissection. the adjuvant treatment with radiation therapy and chemotherapy when there are indicated in the patients. results: we realize 132 conservative surgery, median ages of patients were 51.49 histological type more frequent was ductal infiltrante carcinoma (70.06.%), (85.94 %) were stage i and ii. the surgical more frequent were partial oncology mastectomy with axillaries dissection (80 patients, 61.87 %).10.6 % received adjuvant chemotherapy. the average of finding nodes was 11.37, the 62.6 % pathological axillaries state were 0.50.% expression positive estrogen and progestagen receptors 13.17 % super expression of her2neu. 66.66 % received adjuvant chemotherapy, 79.84.% adjuvant radiation therapy 56.58 % adjuvant hormonal therapy. average vigilance was 39.89 months. 88.88 % alive free disease, 2.22 % alive with local recurrence, and 5.92 % alive with metastases. 1.48 % alive with local and metastasis recurrence 1.07 % dead for disease. the free interval of disease was 25.8 month and the global super life to 5 years 98.24 %. conclusions: the conservative treatment is a primary and effective in breast cancer therapy for stage i and ii.
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