Tactical periodization competition group Club Escuela de Tenis Marineda of Cambre

Traballo fin de grao (UDC.FCDEF). Ciencias da actividade física e do deporte. Curso 2018/201

Análisis de la validez de constructo y de la validez predictiva del cuestionario de clima motivacional percibido en el deporte (PCMSQ-2) con tenistas espanoles de competición

En este trabajo se analiza la validez de constructo del Cuestionario de Clima Motivacional Percibido en el Deporte (PMCSQ-2) utilizando el modelo de ecuación estructural. La muestra estuvo compuesta por 219 jugadores de tenis (76 mujeres y 138 hombres), con una edad media de 15,55±1.89 años, de distinto nivel de competición (intermedios, avanzados y profesionales). Los resultados del presente trabajo ofrecen apoyo preliminar a la validez del PMCSQ-2 con deportistas españoles: Los análisis factoriales confirmatorios, basados en un modelo de ecuación estructural, apoyan dos dimensiones del PMCSQ-2 (Task-climate y Ego climate) y los análisis de correlaciones entre el PMCSQ y el TEOSQ ofrecen apoyo inicial a la validez predictiva del mismo. Aunque se ha obtenido apoyo preliminar, a nivel exploratorio, para las subescalas que subyacen al PMCSQ-2, algunas de éstas no presentan buena consistencia interna. Se discuten los motivos de las concordancias y discordancias halladas en el trabajo desde un enfoque cross-culturalIn this study we analyze the construct reliability of the latest version of the Perceived Motivational Climate in Sport Questionnaire (PMCSQ-2) using a structural equation model. The sample was comprised of 219 tennis players (76 females and 138 males) with a mean age of 15.55 ± 1.89 years with different playing level (intermediate, advanced and professional). The results obtained in this study offer preliminary support to the reliability for the PMCSQ-2 for Spanish athletes: The confirmatory factorial analyses, which are based on a structural equation model, support the two dimensions of the PMCSQ-2 (Task-climate and Ego-Climate), and the correlational analyses between the PMCSQ-2 and the TEOSQ offer initial support to the predictive reliability of this instrument. Althought preliminary support has been obtained at an exploratory level, some of the underlying subscales of the PMCSQ-2 do not demonstrated good internal consistency. The reasons for the similarities and differencies founded in the work are discussed from a cross-cultural perspectiv

Cemented and screw-retained implant-supported single-tooth restorations in the molar mandibular region: a retrospective comparison study after an observation period of 1 to 4 years

Objectives: The aim of this study was to evaluate the survival and compare the appearance of different mechanical and biological complications, in screw-retained and cemented-retained single-tooth implant-supported restorations localized in the molar mandibular region, over a period of 1 to 4 years. Material and Methods: A retrospective study was carried out with a total of eighty implant-supported restorations, which were placed in eighty patients for prosthetic rehabilitation of a mandibular molar. Forty patients were rehabilitated with a cemented-retained restoration and the other forty with a screw-retained restoration. The presence of the following complications was recorded for both types of prostheses: Fractures of the ceramic veneering, loosening screws, mucositis and peri-implantitis. Debonding of the restoration was analyzed in the cemented-retained restoration group. The clinical survival of crowns was analyzed with a Kaplan-Meier test and the clinical complications were compared, using a Student t test and Log-rank test. Results: 27 patients registered some complication. The average rate of complications was 37,5% for cemented- retained restorations and 30% for screw-retained restorations. The complications more common in the cemented- retained restoration were the presence of mucositis (14,87%), while in the screw-retained restorations was the loosening screw (20%). Student t test and Log-Rank test found significant differences ( p =0,001) between the screw loosening and presence of mucositis. Conclusions: The cemented-retained restorations seem to prevent screw loosening, but the presence of cement seem to increase the complications around the soft tissues, however in the screw-retained restorations the presence of mucositis and peri-implantitis are lower than cemented-retained restorations. The incidence of fracture of ceramic veneering was similar in both groups

Eigenvector centrality of nodes in multiplex networks

We extend the concept of eigenvector centrality to multiplex networks, and introduce several alternative parameters that quantify the importance of nodes in a multi-layered networked system, including the definition of vectorial-type centralities. In addition, we rigorously show that, under reasonable conditions, such centrality measures exist and are unique. Computer experiments and simulations demonstrate that the proposed measures provide substantially different results when applied to the same multiplex structure, and highlight the non-trivial relationships between the different measures of centrality introduced

Adenocarcinoma in situ de la ampolla de Vater. Presentación de caso clínico poco frecuente. Manejo diagnóstico y terapéutico

Reportamos el caso de una mujer de 56 años de edad que consulta por dolor en hipocondrio derecho yfiebre. Refiere ictericia, coluria y acolia desde el inicio del cuadro. Niega melena, nauseas y vómitos.Refiere pérdida de peso de aproximadamente 10 kg. .Se realiza Ecografía abdominal con los siguienteshallazgos: Hígado: normal. Vías Biliares Intrahepáticas: dilatadas. Colédoco: 37 mm. en tercio medio y14 mm. a nivel retropancreático. Sospecha de cálculo en su interior. Vesícula biliar: Distendida, con barrobiliar. Se diagnostica Ictericia obstructiva y se indica Colangio Retrograda Endoscópica en donde sevisualiza la papila mayor de aspecto tumoral, midiendo aproximadamente 2 - 2, 5 cm. con una ulceracióncerca del orificio papilar, superficie irregular. Se propone resección endoscópica de la tumoración. Labiopsia informa adenoma velloso con cambios de displasia severa y carcinoma in situ y con compromisode los límites de resección endoscópica. TAC abdominal sin imágenes de metástasis demostrable. Seindica entonces una duodenopacreatectomía cefálica. La anatomía patológica informa adenocarcinoma insitu de la ampolla de Vater con límites quirúrgicos sin evidencia de neoplasia. Ganglios linfáticospancreáticos sin evidencia de metástasis. Buena evolución en el post operatorio y alta hospitalaria a los 15días. A los dos años de seguimiento el paciente esta clínicamente asintomatica y sin evidenciasdiagnósticas de tumor residual

Consumo de Marihuana: consecuencias del llamado “uso recreativo”

Frente a la tolerancia social que existe en la actualidad hacia el consumo de diferentes drogas legales e ilegales, se propuso investigar si se puede sostener sin consecuencias para la salud física, psicológica y social el llamado “uso recreativo” de marihuana. Se comprobó que existe una tendencia generalizada entre los jóvenes a considerar la marihuana como una droga que no produce daños a las personas, si se la mantiene dentro de un uso “social - recreativo”. El aporte de esta investigación, al analizar los conocimientos actuales en el imaginario social de las consecuencias del consumo de marihuana con el aporte científico de la neurobiología, la psicología y la sociología permite la formulación de la siguiente hipótesis: el consumo de marihuana es una necesidad creada socialmente. El adolescente recibe un mensaje constante de la sociedad de consumo: para ser y pertenecer se le imponen determinados modismos que van, desde escapar a los malestares de la cotidianeidad al uso de determinados objetos, incluida la marihuana. Entre las conclusiones más relevantes se constata que la familia en sí misma no es predictora de consumo de marihuana sino que son preponderantes factores del contexto, tales como: la presión social, la búsqueda de identidad grupal, la curiosidad y el alivio del estrés negativo De las respuestas obtenidas de los consumidores se evidencia la necesidad de integración al grupo de pares, imitando e interactuando en situaciones de consumo, y allí la sustancia funciona como un facilitador de las relaciones sociales. El análisis de las trayectorias de los pacientes, sus motivos de inicio, la forma y contexto en que tal situación se produjo, cómo fue vivida la primera experiencia son elementos que permitirán argumentar frente a la banalización y justificación del consumo de marihuana que se produce en la actualidad.Facing the social tolerance that exists today towards consumption of different legal and illegal drugs, our goal was to investigate whether the so-called “recreational use” of marijuana can be sustained without consequences for the physical, psychological and social health. There is now a widespread tendency among young people to consider marijuana as a drug that produces no harmto people if maintained within a “social - recreational” use. The contribution of this research whileanalyzing current knowledge of social representations as regards the consequences of marijuanaconsumption as well as with the scientific contribution of neurobiology, psychology and sociologydevelops the following hypothesis: marijuana consumption is a socially created need. The teenagerreceives a constant message of consumption society : in order to be in it and to belong to it certainways of acting are imposed to him such as to escape from the discomfort of everyday life and theuse of certain objects such as marijuana. Relevant conclusions of this research are that the familyitself is not predictive of marijuana consumption while there are more predominant factors suchas social pressure, search for group identity, curiosity and relief from negative stress. The answersobtained from the consumers make evident the need for integration in the group through imitatingand interacting within situations of consumption and there the substance acts as a facilitator forsocial relations. The analysis of the background of patients including why they started consuming,how and where was their first experience are elements that will allow to argue against trivializationand justification of marijuana consumption nowadays

Commissioning of a synchrotron-based proton beam therapy system for use with a Monte Carlo treatment planning system

This work tackles the commissioning and validation of a novel combination of a synchrotron-based proton beam therapy system (Hitachi, Ltd.) for use with a Monte Carlo treatment planning system (TPS). Four crucial aspects in this configuration have been investigated: (1) Monte Carlo-based correction performed by the TPS to the measured integrated depth-dose curves (IDD), (2) circular spot modelling with a single Gaussian function to characterize the synchrotron physical spot, which is elliptical, (3) the modelling of the range shifter that enables using only one set of measurements in open beams, and (4) the Monte Carlo dose calculation model in small fields. Integrated depth-dose curves were measured with a PTW Bragg peak chamber and corrected, with a Monte Carlo model, to account for energy absorbed outside the detector. The elliptical spot was measured by IBA Lynx scintillator, EBT3 films and PTW microDiamond. The accuracy of the TPS (RayStation, RaySearch Laboratories) at spot modelling with a circular Gaussian function was assessed. The beam model was validated using spread-out Bragg peak (SOBP) fields. We took single-point doses at several depths through the central axis using a PTW Farmer chamber, for fields between 2 × 2cm and 30 × 30cm. We checked the range-shifter modelling from open-beam data. We tested clinical cases with film and an ioni- zation chamber array (IBA Matrix). Sigma differences for spots fitted using 2D images and 1D profiles to elliptical and circular Gaussian models were below 0.22 mm. Differences between SOBP measurements at single points and TPS calculations for all fields between 5 × 5 and 30 × 30cm were below 2.3%. Smaller fields had larger differences: up to 3.8% in the 2 × 2cm field. Mean differences at several depths along the central axis were generally below 1%. Differences in range- shifter doses were below 2.4%. Gamma test (3%, 3 mm) results for clinical cases were generally above 95% for Matrix and film. Approaches for modelling synchrotron proton beams have been validated. Dose values for open and range- shifter fields demonstrate accurate Monte Carlo correction for IDDs. Elliptical spots can be successfully modelled using a circular Gaussian, which is accurate for patient calculations and can be used for small fields. A double-Gaussian spot can improve small-field calculations. The range-shifter modelling approach, which reduces clinical commissioning time, is adequat

Professional interventions to implement guidelines to prevent hazardous alcohol consumption by patients in primary care settings (Protocol)

post-print90 K

Treatment variability and its relationships to outcomes among patients with Wernicke's encephalopathy: A multicenter retrospective study

Background: Despite guidelines and recommendations, Wernicke's encephalopathy (WE) treatment lacks evidence, leading to clinical practice variability.Aims: Given the overall lack of information on thiamine use for WE treatment, we analyzed data from a large, well-characterized multicenter sample of patients with WE, examining thiamine dosages; factors associated with the use of different doses, frequencies, and routes; and the influence of differences in thiamine treatment on the outcome.Methods: This retrospective study was conducted with data from 443 patients from 21 centers obtained from a nationwide registry of the Spanish Society of Internal Medicine (from 2000 to 2012). Discharge codes and Caine criteria were applied for WE diagnosis, and treatment-related (thiamine dosage, frequency, and route of administration) demographic, clinical, and outcome variables were analyzed.Results: We found marked variability in WE treatment and a low rate of high-dose intravenous thiamine administration. Seventy-eight patients out of 373 (20.9%) received > 300 mg/day of thiamine as initial dose. Patients fulfilling the Caine criteria or presenting with the classic WE triad more frequently received parenteral treatment. Delayed diagnosis (after 24 h hospitalization), the fulfillment of more than two Caine criteria at diagnosis, mental status alterations, and folic acid deficiency were associated significantly with the lack of complete recovery. Malnutrition, reduced consciousness, folic acid deficiency, and the lack of timely thiamine treatment were risk factors for mortality.Conclusions: Our results clearly show extreme variability in thiamine dosages and routes used in the management of WE. Measures should be implemented to ensure adherence to current guidelines and to correct potential nutritional deficits in patients with alcohol use disorders or other risk factors for WE