Swimming training repercussion on metabolic and structural bone development: benefits of the incorporation of whole body vibration or pilometric training; the RENACIMIENTO project

Introduction: Enviromental factors such as exercise participation and nutrition have often been linked to bone improvements. However, not all sports have the same effects, being non-osteogenic sports such as swimming defined as negative or neutral sports to practice regarding bone mass by some authors, similarly exercise-diet interaction in especific groups is still not clear. Objective: To present the methodology of the RENACIMENTO project that aims to evaluate body composition and more specifically bone mass by several techniques in adolescent swimmers and to observe the effects and perdurability of whole body vibration (WBV) and jumping intervention (JIN) on body composition and fitness on this population and explore posible diet interactions. Design: Randomized controlled trial. Methods: 78 swimmers (12-17 y) and 26 sex- and age-matched controls will participate in this study. Dual energy X-ray, peripheral Quantitative Computed Tomography, Quantitative Ultrasound, Bioelectrical Impedance Analysis, and anthropometry measurements will be performed in order to evaluate body composition. Physical activity, nutrition, pubertal development and socio-economical status may act as confounders of body composition and therefore will also be registered. Several fitness factors regarding strength, endurance, performance and others will also be registered to evaluate differences with controls and act as confounders. A 7-month WBV therapy will be performed by 26 swimmers consisting of a training of 15 minutes 3 times per week. An 8 month JIM will also be performed by 26 swimmers 3 times per week. The remaining 26 swimmers will continue their normal swimming training. Four evaluations will be performed, the first one in order to describe differences between swimmers and controls. The second one to describe the effects of the interventions and the third and fourth evaluations to describe the perdurability of the effects of the WBV and JIN. Conclusion: The RENACIMIENTO project will allow to answer several questions regarding body composition, fitness, bone mass and interaction with diet of adolescent swimmers, describe swimming as a positive, negative or neutral sport to practice regarding these parameters and elucidate the effects and perdurability of WBV and JIM on body composition.

El diseño de preguntas clínicas en la práctica basada en la evidencia: modelos de formulación

Objetivo: Identificar estructuras estandarizadas para la formulación de preguntas clínicas en el marco de la práctica basada en la evidencia. Método: Se realizó una revisión de la literatura. La búsqueda bibliográfica se efectuó en las bases de datos MEDLINE, CINAHL, EMBASE y LILACS, y en el buscador académico Google Scholar. Se efectuaron estrategias de búsqueda sensibles y acordes a cada base de datos. Límites de búsqueda: intervalo de tiempo (enero de 1995 a abril de 2015), idioma (artículos en inglés). Se usaron palabras clave libres y descriptores del Medical Subject Headings (MeSH) pertinentes: evidence based practice, question, formulation, well-built question, framework. Resultados: Se encontraron 10 manuscritos que aportaron el diseño original de estructuras para la formulación de preguntas clínicas en el ámbito de la práctica basada en la evidencia. El modelo PICO es la estructura más conocida y comúnmente utilizada en investigación cuantitativa y de él derivan los modelos PICOT, PICOTT, PICOS, PIPOH, PECORD, PESICO. En el campo de la gestión sanitaria la estructura ECLIPSE se erige para formulación de preguntas relacionadas con la gestión. Por último, para la búsqueda de evidencias cualitativas se han configurado los modelos SPICE y SPIDER adecuando sus componentes al fenómeno cualitativo. Conclusiones: Estos modelos estandarizadas se comportan como un instrumento idóneo para guiar la estrategia de búsqueda y delimitar el área de interés. Dada la gran variedad de piezas que integran las estructuras, su conocimiento exhaustivo acrecienta sus usos potenciales. Estas estructuras no deben ser consideradas como una guía rígida a la que ceñirse ineludiblemente.