500 research outputs found
La psicología en el reino de las lesiones deportivas: de qué se está hablando
Sport injuries are a constant in physical activity and sport and represent, to a greater or lesser degree, an obstacle that most athletes have to face and which could have an impact on economical, occupational and educational aspects, as well as on physical and psychological health. Traditionally, sport injury was deemed the result of biomechanical forces exerted on the body and sustained during participation in sport activity, under
which perspective the athlete is considered merely as the container of a set of parts that break down and must be repaired. In contrast, Sport Psychology has brought the individual into a central active role, both when sustaining and recovering from an injury. This paper promotes a psychological perspective on sport injury and reviews the main psychological models posed for both the pre-injury and the post-injury phases. Finally, the paper addresses some of the main problems encountered by research on sport injury and sets out several guidelines for future research in the fieldLas lesiones deportivas son una constante en la actividad física y el deporte y representan, en mayor o menor grado, un obstáculo al que la mayor parte de los deportistas se tienen que enfrentar, pudiendo aquéllas tener consecuencias a nivel económico, laboral, educativo, además de a nivel físico y psicológico. Tradicionalmente, la lesión deportiva ha sido considerada como el resultado de la acción de fuerzas biomecánicas que ejercen sobre el cuerpo mientras se participa en una actividad deportiva. Esa perspectiva viene a considerar al deportista como un mero contendor de unas piezas que se han roto y deben ser reparadas. Al contrario, la Psicología del Deporte le concede al individuo un papel activo central tanto en el padecimiento de una
lesión como en el proceso de recuperación de la misma. El presente artículo viene a promover una perspectiva psicológica de la lesión deportiva, revisando los principales modelos psicológicos que se han propuesto tanto para la fase de pre-lesión como para la fase de post-lesión. Finalmente, el artículo plantea los principales problemas de la investigación sobre lesiones deportivas y brinda una serie de líneas de actuación para llevar a cabo la investigación en este campoAs lesões desportivas são uma constante na actividade física e no desporto e representam, em maior ou menor grau, um obstáculo que a maioria dos atletas tem que enfrentar, podendo aquelas ter consequências a nível económico, laboral e educativo, bem como a nível físico e psicológico. Tradicionalmente, a lesão desportiva tem sido considerada como o resultado da acção de forças biomecânicas exercida sobre o corpo enquanto se participa numa actividade desportiva. Essa perspectiva tem vindo a considerar o atleta como um mero recipiente de peças que foram quebradas e devem ser reparadas. Pelo contrário, a Psicologia do Desporto reconhece ao sujeito um papel activo central tanto no padecimento da lesão como no processo de recuperação
da mesma. O presente artigo procura promover uma perspectiva psicológica de lesão desportiva, revendo os principais modelos psicológicos que têm sido propostos tanto para a fase de pré-lesão como para a fase de pós-lesão. Por último, o artigo discute os principais problemas da investigação sobre lesões desportivas e oferece uma série de linhas de actuação para a realização de investigação neste âmbitoThe research leading to this paper has been funded by the Spanish Ministry of Science and Innovation (currently Ministry of Economics and Competitiveness) research grant PSI2011-27000
Psychology in the realm of sport injury : what it is all about
Sport injuries are a constant in physical activity and sport and represent, to a greater or lesser degree, an obstacle that most athletes have to face and which could have an impact on economical, occupational and educational aspects, as well as on physical and psychological health. Traditionally, sport injury was deemed the result of biomechanical forces exerted on the body and sustained during participation in sport activity, under which perspective the athlete is considered merely as the container of a set of parts that break down and must be repaired. In contrast, Sport Psychology has brought the individual into a central active role, both when sustaining and recovering from an injury. This paper promotes a psychological perspective on sport injury and reviews the main psychological models posed for both the pre-injury and the post-injury phases. Finally, the paper addresses some of the main problems encountered by research on sport injury and sets out several guidelines for future research in the field.Las lesiones deportivas son una constante en la actividad física y el deporte y representan, en mayor o menor grado, un obstáculo al que la mayor parte de los deportistas se tienen que enfrentar, pudiendo aquéllas tener consecuencias a nivel económico, laboral, educativo, además de a nivel físico y psicológico. Tradicionalmente, la lesión deportiva ha sido considerada como el resultado de la acción de fuerzas biomecánicas que ejercen sobre el cuerpo mientras se participa en una actividad deportiva. Esa perspectiva viene a considerar al deportista como un mero contendor de unas piezas que se han roto y deben ser reparadas. Al contrario, la Psicología del Deporte le concede al individuo un papel activo central tanto en el padecimiento de una lesión como en el proceso de recuperación de la misma. El presente artículo viene a promover una perspectiva psicológica de la lesión deportiva, revisando los principales modelos psicológicos que se han propuesto tanto para la fase de pre-lesión como para la fase de post-lesión. Finalmente, el artículo plantea los principales problemas de la investigación sobre lesiones deportivas y brinda una serie de líneas de actuación para llevar a cabo la investigación en este campo.As lesões desportivas são uma constante na actividade física e no desporto e representam, em maior ou menor grau, um obstáculo que a maioria dos atletas tem que enfrentar, podendo aquelas ter consequências a nível económico, laboral e educativo, bem como a nível físico e psicológico. Tradicionalmente, a lesão desportiva tem sido considerada como o resultado da acção de forças biomecânicas exercida sobre o corpo enquanto se participa numa actividade desportiva. Essa perspectiva tem vindo a considerar o atleta como um mero recipiente de peças que foram quebradas e devem ser reparadas. Pelo contrário, a Psicologia do Desporto reconhece ao sujeito um papel activo central tanto no padecimento da lesão como no processo de recuperação da mesma. O presente artigo procura promover uma perspectiva psicológica de lesão desportiva, revendo os principais modelos psicológicos que têm sido propostos tanto para a fase de pré-lesão como para a fase de pós-lesão. Por último, o artigo discute os principais problemas da investigação sobre lesões desportivas e oferece uma série de linhas de actuação para a realização de investigação neste âmbito
Eficacia de finasterida en el tratamiento de la hematuria asociada a la hiperplasia protática benigna
La hematuria es una complicación de la hiperplasia benigna de próstata (HBP), tanto en su evolución natural como durante el seguimiento post cirugía prostática. En el estudio de Mebust et al., de 3000 pacientes sometidos a prostactectomía por Hiperplasia prostática benigna (HBP), en el 12 % la presencia de hematuria fue la causa de esta indicación quirúrgica (1). Existen escasas referencias de la acción de la finasterida ante dicho síntoma (2-7), aunque los resultados publicados hasta el momento demuestran un efecto terapéutico precoz y estable mientras dura el tratamient
Alternatives to conventional fungicides for the control of citrus postharvest green and blue moulds
Purpose of review: This article reviews research based on the evaluation of postharvest control methods alternative to conventional chemical fungicides for the control of citrus green and blue moulds, caused by the pathogens Penicillium digitatum and P.
italicum, respectively. Emphasis is given to advances developed during the last few years. Potential benefits, disadvantages and
commercial feasibility of the application of these methods are discussed.
Findings: Substantial progress has been accomplished in selecting and characterising new effective physical, chemical and biological control methods. However, their widespread commercial implementation relies, in general, on the integration of different
treatments of the same or different nature in a multifaceted approach. For satisfactory penicillium decay control, this postharvest
approach should be part of an integrated disease management (IDM) programme in which preharvest and harvest factors are also
considered.
Limitations: The lack of either curative or preventive activity, low persistence, high variability, inconsistency or excessive
specificity are general limitations associated with the use of alternatives to synthetic fungicides as stand-alone treatments. Furthermore, the risk of adverse effects on fruit quality, technological problems for cost-effective application, or the availability of
new conventional fungicides for traditional markets are additional reasons that may hinder the broad commercial use of such
treatments.
Directions for future research: As we learn more about the fundamental basis underlying host-pathogen interactions and
how they are influenced by direct or indirect protective effects of existing or new single alternative treatments, more effective
methods of applying and combining complementary approaches for additive or synergistic effects will emerge. Research should
provide appropriate tools to tailor the application of these nonpolluting postharvest control systems and, further, the complete
IDM strategy for each specific situation (ie, citrus species and cultivar, climatic and seasonal conditions, destination market,
etc)
Evaluating food additives as antifungal agents against Monilinia fructicola in vitro and in hydroxypropyl methylcellulose-lipid composite edible coatings for plums
Common food preservative agents were evaluated in in vitro tests for their antifungal activity against Monilinia fructicola, the most economically important pathogen causing postharvest disease of stone fruits. Radial mycelial growth was measured in Petri dishes of PDA amended with three different concentrations of the agents (0.01-0.2%, v/v) after 7. days of incubation at 25. °C. Thirteen out of fifteen agents tested completely inhibited the radial growth of the fungus at various concentrations. Among them, ammonium carbonate, ammonium bicarbonate and sodium bicarbonate were the most effective while sodium acetate and sodium formate were the least effective. The effective agents and concentrations were tested as ingredients of hydroxypropyl methylcellulose (HPMC)-lipid edible coatings against brown rot disease on plums previously inoculated with M. fructicola (curative activity). 'Friar' and 'Larry Ann' plums were inoculated with the pathogen, coated with stable edible coatings about 24. h later, and incubated at 20. °C and 90% RH. Disease incidence (%) and severity (lesion diameter) were determined after 4, 6, and 8. days of incubation and the 'area under the disease progress stairs' (AUDPS) was calculated. Coatings containing bicarbonates and parabens significantly reduced brown rot incidence in plums, but potassium sorbate, used at 1.0% in the coating formulation, was the most effective agent with a reduction rate of 28.6%. All the tested coatings reduced disease severity to some extent, but coatings containing 0.1% sodium methylparaben or sodium ethylparaben or 0.2% ammonium carbonate or ammonium bicarbonate were superior to the rest, with reduction rates of 45-50%. Overall, the results showed that most of the agents tested in this study had significant antimicrobial activity against M. fructicola and the application of selected antifungal edible coatings is a promising alternative for the control of postharvest brown rot in plums. © 2014 Elsevier B.V
Transcriptome analysis in blood cells from children reveals potential early biomarkers of metabolic alterations
OBJECTIVES: The development of effective strategies to prevent childhood obesity and its comorbidities requires new, reliable early biomarkers. Here, we aimed to identify in peripheral blood cells potential transcript-based biomarkers of unhealthy metabolic profile associated to overweight/obesity in children.
METHODS: We performed a whole-genome microarray analysis in blood cells to identify genes differentially expressed between overweight and normal weight children to obtain novel transcript-based biomarkers predictive of metabolic complications.
RESULTS: The most significant enriched pathway of differentially expressed genes was related to oxidative phosphorylation, for which most of genes were downregulated in overweight versus normal weight children. Other genes were involved in carbohydrate metabolism/glucose homoeostasis or in lipid metabolism (for example, TCF7L2, ADRB3, LIPE, GIPR), revealing plausible mechanisms according to existing biological knowledge. A set of differentially expressed genes was identified to discriminate in overweight children those with high or low triglyceride levels.
CONCLUSIONS: Functional microarray analysis has revealed a set of potential blood-cell transcript-based biomarkers that may be a useful approach for early identification of children with higher predisposition to obesity-related metabolic alterations
Tratamiento funcional de las fracturas del fémur
El tratamiento funcional de las fracturas diafisarias del fémur ha consistido en tracción de Neufeld durante un tiempo medio de un mes seguida de escayolado isquiopédico conformado y articulado durante un tiempo medio de dos meses y medio, permitiendo la marcha con apoyo tras su colocación. Analizamos el resultado de los primeros 25 casos tratados con este método y controlados siguiendo parámetros anatómicos y funcionales. El estudio revela que no se han presentado ni retardos de consolidación ni pseudoartrosis; tampoco se han presentado complicaciones propias del método. El 54 % de casos presentaron algiín tipo de angulación siempre menor de 10 grados. El acortamiento estuvo presente en 21 casos de los que tan sólo en un caso fue superior a los 2 cm. (2,8 cm.). Tanto las desviaciones como los acortamientos estuvieron exentos de trascendencia clínica. La extensión de la rodilla ha sido total en todos los casos y casi todos han recuperado una flexión superior a los 90 grados. La comparación con series de tratamiento ortopédico clásico (tracción y peso pelvipédico) y de osteosíntesis (placa inmediata o enclavado endomedular) pone de manifieste las ventajas del método ortopédico funcional que permite la carga y la movilidad de rodilla precoces
In vitro and in vivo induction of brown adipocyte uncoupling protein (thermogenin) by retinoic acid
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