Universidad Manuela Beltrán

About: Universidad Manuela Beltrán is a education organization based out in Bogotá, Colombia. It is known for research contribution in the topics: Population & Body mass index. The organization has 690 authors who have published 611 publications receiving 2526 citations.

Incidencia del Aprendizaje Basado en Proyectos, implementado con Tecnologías de Información y Comunicación, en la motivación académica de estudiantes de secundaria

Abstract: La investigacion esta destinada a identificar la incidencia de un ambiente de Aprendizaje Basado en Proyectos (ABP) mediado con TIC, en la motivacion academica de estudiantes de secundaria en la ensenanza de conceptos basicos de circuitos electricos, en la tematica de corriente electrica del area de tecnologia. La unidad de analisis fue el grado 9, cuyas edades oscilan entre 14 y 16 anos de edad. Se utilizo enfoque cualitativo con diseno de estudio de caso y tecnicas de grupo focal y observacion. El analisis fue la teoria fundamentada evidenciando una contribucion significativa en el interes de los estudiantes conocido como “interes situacional”, surgiendo, respuestas atencionales y de implicacion academica que ayudan a orientar la conducta hacia una motivacion academica. Palabras clave: Motivacion Academica, Interes situacional, ABP, TIC, Tecnologia. Abstract The research is aimed at identifying the impact of an environment of Project-Based Learning (PBL) mediated with ICT, on the academic motivation of high school students in the teaching of basic concepts of electrical circuits, in the subject of electric current in the area of technology. The unit of analysis was grade 9, whose ages range between 14 and 16 years of age. A qualitative approach was used with case study design and focus group and observation techniques. The analysis was grounded theory evidencing a significant contribution in the interest of students known as "situational interest", arising, attentional responses and academic involvement that help guide behavior toward academic motivation. Keywords: Academic Motivation, Situational Interest, PBL, ICT, Technology. Resumo A pesquisa tem como objetivo identificar o impacto de um ambiente de Aprendizagem Baseada em Projetos (ABP) mediado com as TIC, sobre a motivacao academica de estudantes do ensino medio no ensino de conceitos basicos de circuitos eletricos, no tema corrente eletrica na area de tecnologia A unidade de analise foi a 9a serie, com idades entre 14 e 16 anos. Utilizou-se abordagem qualitativa com delineamento de estudo de caso e grupo focal e tecnicas de observacao. A analise foi fundamentada na teoria evidenciando uma contribuicao significativa no interesse dos alunos, conhecida como "interesse situacional", surgindo, respostas atencionais e envolvimento academico que ajudam a orientar o comportamento em direcao a motivacao academica. Palavras-chave : Motivacao Academica, Interesse Situacional, PBL, TIC, Tecnologia.

Manejo fisioterapeutico del dolor por medio de modalidades terapeuticas en tenosinovitis de quervain

Abstract: Resumen es: Este articulo plantea como objetivo determinar la influencia de los tratamientos convencionales en la intensidad del dolor en pacientes con Tenosinovitis...

Synthesis and X-ray crystallographic analysis of free base and hexafluorophosphate salts of 3,4-dihydroisoquinolines from the Bischler–Napieralski reaction

Abstract: The Bischler–Napieralski reaction of N-phenylethyl cinnamamides was investigated in acetonitrile and 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6). Strong effects on the nature of the isolated products were observed depending on the structure of the starting materials and the solvent used. The corresponding 3,4-dihydroisoquinoline as a free base was isolated when acetonitrile was employed, but the respective 3,4-dihydroisoquinolines, as hexafluorophosphate salts, were obtained when [bmim]PF6 was used as a reaction medium due to an anion metathesis between the reaction intermediates and the solvent. A full X-ray crystallographic analysis of a 1-phenethyl-3,4-dihydroisoquinoline derivative is reported for the first time and reveals that, in this core, as a free base, the C10–N1–C9–C8 torsion angle allows the existence of two conformers, crystallizing in a centrosymmetric P21/n space group. However, only one conformer crystallized in the hexafluorophosphate salt, therefore describing an enantiomorphic P61 space group. The absence of type II symmetry operations allowed the formation of 1D-channels that contain the PF6− anions and cross the entire structure along the [001] direction giving interesting potential uses as an ionic conductor. Additionally, CE-B3LYP model energies showed that, in both crystal structures, dispersion forces have an important role in the supramolecular architecture. Nevertheless, in the hexafluorophosphate salt electrostatic forces increase the structural stability to a total packing energy of −173.6 kJ mol−1, compared with the free base with a value of −135.0 kJ mol−1.

Effects of explosive and impact exercises on gait parameters in elderly women

Abstract: espanolIntroduccion. Varias revisiones sistematicas y meta-analisis han sugerido que los programas de actividad fisica que combinan ejercicios de bajo impacto y de fuerza mantienen la capacidad funcional en adultos mayores. Objetivo. Analizar el efecto de un programa de entrenamiento acuatico basado en movimientos explosivos y de impacto en los parametros de la marcha en adultas mayores. Materiales y metodos. 60 mujeres fisicamente activas (64.08±3.98 anos) fueron divididas en dos grupos, uno control (CG=35) y otro de intervencion (entrenamiento en piscina usando multisaltos) (IG=35). El IG entreno por 32 semanas, 3 dias a la semana, 1 hora por sesion. Se evaluo la composicion corporal, la fuerza explosiva y los parametros de la marcha sobre 6m de recorrido usando el centro de presion (COP) antes y despues de participar en el programa. Resultados. Se presentaron diferencias en la fuerza explosiva y la potencia (EG vs. CG; p=0.05-001), asi como cambios en los parametros de la marcha relacionados al COP (EG vs. CG: p=0.05-001), con cambios significativos y positivos para EG. Conclusion. El programa de entrenamiento en agua con movimientos de impacto y explosivos induce ganancias en fuerza muscular y potencia, lo que mejora la capacidad de caminar. Teniendo en cuenta lo anterior, se debe considerar ofrecer una mejor disponibilidad de programas similares a esta poblacion, ya que su participacion en estos programas podria ayudarles a mejorar su capacidad funcional y, por tanto, su calidad de vida. EnglishIntroduction: Several systematic reviews and meta-analyses have suggested that physical activity programs combining low impact exercises and resistance exercises help maintaining functional capacity in older adults. Objective: To analyze the effects of an aquatic training program involving both impact and explosive exercises on gait parameters of women aged 60 and above. Materials and methods: 60 physically active women (64.08±3.98 years) were divided into 2 groups: those training in a pool by performing series of jumps, i.e., the experimental group (EG= 35), and the control group (CG=35). EG participants trained 3 times per week during 32 weeks in an hour per session basis. Body composition measurements, explosive strength, and gait parameters (in a 6 meters long track) were assessed using the center of pressure (COP) indicator before and after participating in the training program. Results: When comparing both groups, differences in explosive strength and power (EG vs. CG; p values=from 0.05 to 001) were observed, as well as changes in gait parameters related to the COP (EG vs. CG: p = 0.05-001), in particular EG participants had significant and positive changes. Conclusion: The aquatic training program described here produced an increase in muscle strength and muscle power, thus gait parameters were improved. Bearing this in mind, an improved availability of similar programs for older adults should be considered, since their participation in these programs could help them improve their functional capacity, and, thus, their quality of life.