16 resultados para Vírus 2 linfotrópico T humano

em Repositorio Académico de la Universidad Nacional de Costa Rica


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Dyslipidemia, i.e. high levels of blood lipids (cholesterol and triglycerides), is strongly related to cardiovascular disease (CVD). In order to reduce the risk of CVD at any moment in a person ́s life, it is crucial to know his/her –and the population’s– lipid profile. The aim of this study was to assess the (statistical) indicators of blood lipids and the prevalence of dyslipidemia in patients treated in the Integral Health Attention Program from Universidad de Costa Rica. A descriptive study was conducted including 10,044 patients aged 20 to 65 years, who were tested for a blood lipid profile in 2006. A total of 2,969 (29.6%) male and 7,075 (70.4%) female patients took part in the study, with an average age of 43.5 years. General averages for blood lipids were: 203.3 mg/dl for total cholesterol, 50.1 mg/dl for HDL, 120.1 mg/dl for LDL, and 165.6 mg/dl for triglycerides. Prevalence of 17.2% was determined for hypercholesterolemia (≥240 mg/dl), as well as 21.3% for low HDL levels (<40 mg/dl), 11.9% for high LDL levels (≥160 mg/dl), and 26.3% for high triglyceride levels (≥200 mg/dl). Women showed higher overall levels of dyslipidemia than men. Based on health areas, no significant differences were found in general lipid levels by age or sex. Results indicate that the general prevalence of dyslipidemia is close to half the rate reported in worldwide literature and lower than results reported in Costa Rican studies. However, general averages exceeded optimal levels for each blood lipid; consequently, it is important to develop health interventions oriented to reduce the impact of dyslipidemia in the studied population.

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A simple method has been recently proposed to assess acute hydration status in humans; however, several questions remain regarding its reliability, validity, and practicality. Objective: Establish reliability of a simple method to assess euhydration, that is, to analyze whether this method can be used as a consistent indicator of a person´s hydration status. In addition, the study sought to assess the effect exercise has on urine volume when euhydration is maintained and a standardized volume of water is ingested. Methods: Five healthy physically active men and five healthy physically active women, 22.5 ± 2.3 years of age (mean ± standard deviation) reported to the laboratory after fasting for 10 hours or more on three occasions, each one week apart. During the two identical resting euhydration conditions (EuA and EuB), participants remained seated for 45 minutes. During the exercise condition (EuExer), participants exercised intermittently in an environmental chamber (average temperature and relative humidity = 32 ± 3°C and 65 ± 7%, respectively) for a period of 45 minutes and drank water to offset loss due to sweating. The order of treatments was randomized. Upon finishing the treatment period, they ingested a volume of water equivalent to 1.43% body mass (BM) within 30 minutes. Urine was collected and measured henceforth every 30 minutes for 3 hours. Results: Urine volume eliminated during EuExer (1205 ± 399.5 ml) was not different from EuB (1072.2±413.1 ml) or EuA (1068 ± 382.87 ml) (p-value = 0.44). Both resting conditions were practically identical (p-value = 0.98) and presented a strong intraclass correlation (r = 0.849, p-value = 0.001). Conclusions: This method, besides simple, proved to be consistent in all conditions; therefore, it can be used with the certainty that measurements are valid and reliable.

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El propósito de este artículo fue el de revisar la naturaleza de los patrones de movimiento de los niños, con el fin de entrelazarlos con las recomendaciones que se han establecido en cuanto a la actividad física que deben realizar y compararlas con las que tradicionalmente, se han seguido en el entorno costarricense. En una segunda parte del artículo se menciona al juego como la alternativa para rescatar el disfrute de moverse en los niños y de poder propiciar estilos de vida activa usando como elemento precursor las clases de educación física.

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Some physical characteristics are related to maximum sport performance, which has resulted in what has been denominated the morphological prototype.  Knowing about this concept is of great relevance for physical activity professionals.  Consequently, the purpose of this research was to give evidence as to whether the somatotypes of elite Cuban paddlers are related to international studies done in Spain (Esparza, 1993), Canada (Carter, 1999), Australia (Ackland et al, 2000), Argentina (Lentini et al, 2002), and the United States (Vaccaro et al, 2000).  A total of 30 athletes were evaluated including 9 female kayakers and 21 male canoeists and kayakers. This study shows the significant heterogeneity found in this population based on the behavior of the somatotypes when contrasting the groups.  Compared to the other reference studies, the endomorphic component proved to be the differentiating factor in this research.  The foregoing allowed us to conclude that actions should be taken to modify this component in a way that Cuban athletes are closer to the anthropometric profile exhibited by international elite teams.

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Sports and recreation management is addressed here using a model that combines the policies and methodologies applied in the Costa Rican context as a result of a concern to identify the real needs in the sports, recreation, and health promotion fields through the different manifestations of human movementThis approach has been developed during eight years of work in the Costa Rican Sports and Recreation Institute (Instituto Costarricense del Deporte y la Recreación-ICODER) together with different Costa Rican communities, both rural and urban, and local organizations, such as Comprehensive Development Community Associations, Sports and Recreation Community Boards (CCDR), Municipal Mayorships, and NGOs, among others.  This article particularly takes into consideration the experience of the CCDRs as entities that have been given the responsibility by the Costa Rican Government to promote and manage municipal sports and recreation services with a convenient offering that would meet the needs of users or customers.  In this way, this article is aimed at answering the question on how Boards should conduct an efficient management in a way that they also meet the needs of public users or customers in the municipalities of the country, by proposing a management model that serves as an additional instrument to improving the already existing services managed by the aforementioned entities.  This study presents a model of Costa Rican management structured with the theoretical elements that currently define the organization and planning of sports and recreation as a service.

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The objective of this study was to determine the importance of different dimensions as the possible causes for the abandonment of the practice of swimming by former Costa Rican swimmers.  Subjects: 51 former swimmers participated, including 17 men (22 ±3.4 years of age) and 34 women (22.5 ±3.4 years of age) from different Costa Rican swimming teams.  The Questionnaire of Reasons for Attrition in the Practice of Sports (Gould et al, 1982; cited by Salguero, Tuero, and Márquez, 2003) was used.  Results:  A positive relationship was noted between perceptions of low skill and low performance (r: 0.372), while negative relationships were noted between years of practice and low skill (r:-0.337), years of practice and influence from others (r:-0.286), and years of practice and starting age for swimming (r:-0.622).  A significant interaction was found in the dimensions gender of participants (F: 2.952; p<0.05) and starting age for swimming (F: 3.147; p<0.01).  An interaction was also found between dimensions and the desire to swim again (F: 2.485; p>0.05).  There were also significant differences in the years of practice; that is, subjects who started before the age of 10 had a higher average of years of practice than those who started later (F: 21.465; p<0.05).  Additionally, a significant interaction was found in weekly hours of swimming practice (F: 2.072; p<0.05).  There were no significant differences (F: 2.535; p>0.05) according to weekly hours of training when subjects were actively swimming. Conclusions: Possible reasons for dropping out were lack of enjoyment and poor physical condition for men and perception of lack of team spirit for women.  The group that started after the age of ten gives similar importance to all the dimensions as possible reasons for dropping out, while the group that began swimming before the age of ten sees lack of team spirit, lack of enjoyment, and poor physical condition as the key reasons for dropping outThe most important dimensions that represented the reasons for abandonment in subjects who wanted to swim again were lack of team spirit, poor physical condition and low skill, while lack of enjoyment was the most important reason for subjects who do not want to swim again.  In the group of subjects who would swim less than six hours, lack of team spirit is the most important cause, while the dimension lack of enjoyment was the most important reason for subjects who would swim 6 to 12 hours.  Additionally, the highest dropout percentages were observed in the transition from secondary school to college.

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The purpose of this study was to determine the cognitive effects of applying physical recreational activities to two groups of pre-school students, related to mathematics to one of the groups and recreational games to the other.  A total of 27 subjects (13 girls and 14 boys) of 5 and a half and 6 and half years of age participated in the study.  The instrument used was a questionnaire including basic math concepts such as geometry, basic operations with concrete elements, and how to read the clock, based on the topics established by the Costa Rican Ministry of Public Education.  Once the instrument was developed, a plan of physical recreational activities related to math was prepared and applied to the experimental group (pre-school B) for one and a half months, while the other group played recreational games.  Data was analyzed using descriptive and inferential statistics.  Positive and significant effects were found in the physical recreational activity program regarding student performance in 10 of the 12 items that were applied to assess mastery of basic math concepts.  In conclusion, using physical education as another instrument to teach other disciplines represents an excellent alternative for pre-school teachers that try to satisfy the learning needs of children that will soon be attending school.  Using movement as part of guided and planned activities plays an indispensable role in children’s lives; therefore, learning academic subjects should be adapted to their needs to explore and know their environment.

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The aim of this study was to analyze the quality of life of faculty and staff of the Presbítero Benjamín Núñez Campus of Universidad Nacional (UNA, Costa Rica) as well as to assess the influence of two factors, sense of coherence and physical exercise, in the quality of life of the subjects.  A group of 37 faculty members and 30 staff members participated in the study.  The SF-36 Questionnaire, the Sense of Coherence Scale, and a survey to measure physical exercise habits were used.  In general, results showed a relatively good quality of life and similar scores were found in the Sense of Coherence Scale.  Additionally, significant connections were found between certain factors related to sense of coherence and quality of life.  Data confirmed that persons who practice physical exercise have a better quality of life than those who are not physically active.  It was concluded that, although quality of life and sense of coherence were relatively good, new proposals must be designed and implemented to improve both aspects.  In this sense, physical exercise proved to be one of the pillars in the development of innovative proposals aimed at bettering health in university employees, all of this within the “Healthy Universities” concept.

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El propósito del estudio es comparar el gasto energético medio y los  niveles de actividad física entre los jóvenes de Monterrey, México y Zaragoza, España; considerando variables como género, tipo de escuela y momento de la semana (jornada escolar o fin de semana). Métodología: estudiantes adolescentes de 12 a 17 años, pertenecientes a las escuelas públicas y privadas de la ciudad de Monterrey (N= 396) y Zaragoza (N= 394). Se utilizó el cuestionario Four by one-day physical activity questionnaire con una fiabilidad de .89, realizado con un test-retest por su adaptación de formato. Resultados: existe tanto en Zaragoza como en Monterrey un número importante de escolares con bajos niveles de actividad física. Casi la mitad de los escolares se han tipificado como inactivos y muy inactivos. El gasto energético fue muy similar 37.52 kcal/kg/día ± 2.12 y 37.66 kcal/kg/día ± 2.95, en las dos ciudades señaladas. Conclusiones: en cuanto al género los hombres presentan mayores niveles de actividad física que las mujeres dato que coincide con la mayoría de los estudios. Los escolares realizan mayor nivel de actividad física durante la jornada escolar que en los fines de semana.

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The purpose of this study was to analyze and compare the technical performance profile of the four-time Costa Rican Senior Basketball League championship team. A total of 142 games was recorded throughout the 2007, 2008 and 2009 seasons. Performance indicators selected were: two and three-point shots (converted, missed, effectiveness rates), free throws (converted, missed, effectiveness rates), points, offensive and defensive rebounds, fouls, turnovers, assists and ball steals. The information was described based on absolute and relative frequency values. Data was compared by season and by playing period based on the following non-parametric techniques: U-test, Friedman test and Chi-square. In all cases, SPSS version 15.0 was used with a significance level of p ≤ 0.05. Results showed a better profile of technical performance in the 2008 season, characterized by better percentages of two-point shots, free throws, fewer turnovers and more ball steals and assists. In relation to the playing period, the team showed a better technical performance profile during the second half of the matches. In general, the effectiveness rate of two-point shots and free throws was above 60% in both playing periods, while the three-point shot percentage ranged between 26.4% and 29.2%. In conclusion, the team showed a similar technical performance profile to that reported in the literature, as well as a clear evidence of the importance of recording and following up on technical performance indicators in basketball.

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The aims of the present study were to determine the effect of firefighter's boots on the vertical component of the ground reaction force (GRF) at heel strike, also known as heel strike transient and to analyze the effect of the viscoelastic insoles placed into the firefighter’s boots on this force during the gait. The magnitude of the impact force (FZI) from the vertical ground reaction force, the time to the production of this force (TZI) and the loading rate (GC) were registered. 39 firefighters without any pathology during 2 years before the study were recruited. Three different walking conditions were tested: 1) gait with firefighter's boots, 2) gait with firefighter's boots and viscoelastic insoles and 3) gait with sport shoes. The results showed a higher production and magnitude of the impact force during gait with firefighter's boots than during gait with sport shoes (13,1 vs. 2,6 % of occurrence of the impact force and 61,39 ± 35,18 %BW (body weight) vs. 49,38 ± 22,99 %BW, respectively). The gait with viscoelastic insoles placed into the firefighter's boots did not show significant differences in any of the parameters characterizing the impact force compared to the gait without insoles. The results of this study show a lower cushioning of the impact force during the gait with firefighter's boots in comparison to the gait with sport shoes and the inefficiency of the viscoelastic insoles placed inside the firefighter's boots to ameliorate the cushioning of the impact force at natural walking speed.

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La pregunta sobre el humanismo está íntimamente ligada con las metáforas que las distintas sociedades en diferentes momentos han utilizado no sólo para comprender las relaciones con su entorno, sino también para estructurar su visión sobre sí mismas.En la Edad Media, el topos del microcosmos y el macrocosmos no sólo servía para reconocer en el mundo los principios de la analogía y la similitud como articuladores de las «realidades» naturales y divinas, sino que permitían una vía de interpretación de esas dos instancias en una visión totalizadora en la que la Trinidad se presentaba como metáfora por excelencia. Por otro lado, el humanismo renacentista aliviado ya de la metáfora anterior, y entusiasmado con una nueva -el hombre- se aventuró a explorar y a inventar bordes y límites por los que transitara su renovada humanidad.

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Se ponen de relieve las elaboraciones y los tratamientos de la imagen de Dios presentes en la poesía de Machado. Mediante un análisis de textos significativos, subraya las discrepancias del poeta ante las concepciones tradicionales de un Dios abstracto y de un Jesús sufriente, a las que el hablante propone el apego a un Jesús histórico, dador de una palabra imperecedera. El análisis se desarrolla mediante un examen del discurso poemático, de sus recursos estilísticos, fónicos y semánticos.This articIe emphasizes the interpretations and treatments of the image of God in Machado's poetry. By analyzing significant texts, this study points out the poet's discrepancies with the traditional conceptions of an abstract God and a suffering Christ, for which the speaker proposes a preference for a historical Jesus whose word will never perish. The analysis examines the poetic discourse, addressing stylistic, phonetic and semantic features.

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This reflection emerges from the experience I have lived as a student and as an academic university professor with the hope that superior education can have the opportunity and potential to renew and vitalize the formal educational processes, from the point of view the paradigm of complexity wich assumes the close relation between the human being and the Universe.

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ResumenLa identidad de una persona, adultos/as o niños/as, es un conjunto de características que particularizan a ese ser humano. Desde la infancia y hasta avanzada la edad adulta se van erigiendo rasgos que servirán para afianzar una identidad propia; la mayoría de estas características se toman a muy temprana edad y por lo tanto, debe delimitarse muy bien no solo el derecho que tienen las personas menores de edad a tener una identidad propia y estatalmente resguardada, sino también, se debe valorar y hacer respetar al derecho que tienen a formarla. Los instrumentos internacionales destinados a la protección de los derechos de las personas menoresasí como el Código de la Niñez y la Adolescencia costarricense, no delimitan claramente el derecho a la identidad en general y del todo son omisos en relación con el derecho de los/as infantes a conformar su identidad.Palabras clave: Derechos Humanos de las niñas y los niños, identidad, formación de la identidad, derecho a la identidad.AbstractThe identity of a person, adults or children, is a set of characteristics that distinguish that human being. Traits that will strengthen one’s own identity are erected from childhood to advanced adulthood; mostof these features are acquired at an early age and therefore, they should not only be delimited by the right minors have of their own and state protected identity, but also, their rights of identity formationshould be assessed and enforced. International instruments aimed at the protection of the rights of children, as well as the Costa Rican code of children and adolescents, do not clearly delimit the right to identity in general and are entirely neglectful in relation to the right of infants to shape their identity.Keywords: Human Rights of Children, identity, identity’s training, right to the identity.