Time filter

Source Type

Henriques C.,Polytechnic Institute of Viseu | Henriques C.,University of Coimbra | Matos A.,Polytechnic Institute of Viseu | Matos A.,Center for the Study of Education | Santos L.F.,Tondela Viseu Hospital Center
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

In this study we consider logistic regression models to predict mutation carriers in family members affected by Brugada Syndrome. This Syndrome is an inherited cardiopathy that predisposes individuals without structural heart disease to sudden cardiac death. We focused on five electrocardiographic markers, which have been explored as good discriminators between carriers and non-carriers of the genetic mutation responsible for this disease. Logistic regression models which combine some of the five markers were investigated. Our objective was to assess the predictive ability of these models through internal validation procedures. We also applied shrinkage methods to improve calibration of the models and future predictive accuracy. Validation of these models, using bootstrapping, point to some superiority of two models, for which fairly good measures of predictive accuracy were obtained. This study provides confidence in these models, which offer greater sensitivity than the usual screening by detecting a characteristic pattern in an electrocardiogram. © 2014 Springer International Publishing. Source

Sarmento H.,Center for the Study of Education | Sarmento H.,University Institute of Health Sciences | Bradley P.,Leeds Beckett University | Anguera M.T.,University of Barcelona | And 3 more authors.
Journal of Sports Sciences | Year: 2016

The aim of this study was to quantify the type of offensive sequences that result in goals in elite futsal. Thirty competitive games in the Spanish Primera Division de Sala were analysed using computerised notation analysis for patterns of play that resulted in goals. More goals were scored in positional attack (42%) and from set pieces (27%) compared to other activities. The number of defence to offense “transitions” (n = 45) and the start of offensive plays due to the rules of the game (n = 45) were the most common type of sequences that resulted in goals compared to other patterns of play. The central offensive zonal areas were the most common for shots on goal, with 73% of all goals scored from these areas of the pitch compared to defensive and wide zones. The foot was the main part of the body involved in scoring (n = 114). T-pattern analysis of offensive sequences revealed regular patterns of play, which are common in goal scoring opportunities in futsal and are typical movement patterns in this sport. The data demonstrate common offensive sequences and movement patterns related to goals in elite futsal and this could provide important information for the development of physical and technical training drills that replicate important game situations. © 2015 Taylor & Francis. Source

Pereira J.,Tondela Viseu Hospital Center | Afonso A.C.,Tondela Viseu Hospital Center | Constantino J.,Tondela Viseu Hospital Center | Matos A.,Center for the Study of Education | And 5 more authors.
European Journal of Trauma and Emergency Surgery | Year: 2015

Purpose: Acute cholecystitis and pancreatitis are acute forms of cholecystolithiasis. The presence of acute cholecystitis can lead to important changes in therapy in the early course of acute pancreatitis. The aim of this study was to identify the accuracy of ultrasonography in diagnosing acute cholecystitis with coexistent acute pancreatitis. Methods: Subjects were all those patients admitted to our hospital with a diagnosis of acute pancreatitis between 1998 and 2015 who underwent cholecystectomy within 15 days of the ultrasonography performed on admittance. Patient data were analyzed retrospectively to compare the ultrasound findings with the pathological findings of the resected gallbladders. Patients were allocated to two groups according to the signs of acute cholecystitis on ultrasonography: group 1 negative and group 2 positive. Results: One hundred and twenty patients were enrolled in the study: 77 in group 1 and 43 in group 2. Similar results were found for the two groups with respect to the pathological diagnosis of acute cholecystitis, i.e., 31.2 % for group 1 and 27.9 % for group 2. Analysis indicated that there was no correlation between the ultrasonography data and pathological findings (p = 0.708). Conclusions: On the basis of our study, ultrasound findings alone cannot be used to accurately diagnose acute cholecystitis in the setting of acute pancreatitis. © 2015 Springer-Verlag Berlin Heidelberg Source

Marques A.,University of Lisbon | Sarmento H.,Center for the Study of Education | Sarmento H.,University Institute of Health Sciences | Martins J.,University of Lisbon | Saboga Nunes L.,New University of Lisbon
Preventive Medicine | Year: 2015

Background: Adults are recommended to engage in at least 150 min/week of moderate-to-vigorous physical activity (PA). Purpose: This study aimed to examine the level of compliance with PA recommendations among European adults. Methods: Using data from European Social Survey round 6, PA self-report data was collected from 52,936 European adults from 29 countries in 2012. Meeting PA guidelines was assessed using World Health Organization criteria. Results: 61.47% (60.77% male, 62.05% female) of European adults reported to be engaged in moderate to vigorous PA at least 30 min on 5 or more days per week. The likelihood of achieving the PA recommended levels was higher among respondents older than 18-24. For those aged 45-64. years the likelihood increased 65% (OR = 1.65, 95% CI: 1.51-1.82, p< 0.001) and 112% (OR = 2.12, 95% CI: 1.94-2.32, p< 0.001) for males and females, respectively. Those who were high school graduates were more likely to report achieving the recommended PA levels than those with less than high school education (males: OR = 1.19, 95% CI: 1.12-1.27, p< 0.001; females: OR = 1.13, 95% CI: 1.06-1.20, p< 0.001). Conclusion: Although about 60% of European adults reported achieving the recommended levels of PA, there is much room for improvement among European adults, particularly among relatively inactive subgroups. © 2015 Elsevier Inc. Source

Martins J.,University of Lisbon | Marques A.,University of Lisbon | Sarmento H.,Center for the Study of Education | Sarmento H.,University Institute of Health Sciences | Carreiro Da Costa F.,University of Lisbon
Health Education Research | Year: 2014

This article examined qualitative studies of adolescents' perspectives about the facilitators and barriers of physical activity, published from 2007 to 2014. A systematic review of 'Web of Science', 'EBSCO', 'Psychinfo' and 'ERIC' databases was performed according to Preferred Reporting Items for Systematic reviews and Meta-analyses guidelines. The following keywords were used: 'physical activity' and 'physical education', each one individually associated with 'correlate', 'determinant', 'facilitator', 'barrier', 'factor influen∗', and with 'qualitative', 'focus group', 'interview', "narrative'. Out of 3815 studies initially identified, due to inclusion and quality criteria, only 12 were fully reviewed. Studies' outcomes were analyzed through thematic analysis. The majority of these reported research with young adolescent girls. Few studies have considered the socioeconomic status influence. According to young people's perspectives, the main facilitators and hampering factors to their participation in physical activity were the following: attitude toward physical activity; motivation; perceptions of competence and body image; fun; influence of friends, family and physical education teachers and environmental physical activity opportunities. Specific life transition periods were referred only as a barrier to physical activity. Strategies of pedagogical actions and for developing physical activity intervention programs were discussed, in order to effectively promote the adoption of active lifestyles among youth. © 2015 The Author. Published by Oxford University Press. All rights reserved. Source

Discover hidden collaborations