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DSpace - Universidade do Porto (73,077 recursos)
Este repositório institucional visa coleccionar, preservar e disponibilizar na Internet a produção intelectual da comunidade académica da U.PORTO. Apenas as publicações em texto integral e de acesso livre (sob as condições de licença pública Creative Commons)fazem parte deste repositório. Informações adicionais sobre outras publicações encontram-se em www.up.pt.

FADEUP - Artigo em Revista Internacional

Mostrando recursos 1 - 20 de 236

1. Relationship between chronic complications, hypertension, and health-related quality of life in Portuguese patients with type 2 diabetes - Sepúlveda, E.; Poinhos, Rui; Constante, M.; Pais-Ribeiro, J.; Freitas, P.; Carvalho, D.
Background: The aim of this study was to assess the relationship between health-related quality of life (HRQoL) and the presence or absence of hypertension and diabetes-related chronic complications in type 2 diabetes, and also the association between HRQoL and the number of chronic complications.Methods: One hundred patients with type 2 diabetes were interviewed. HRQoL was evaluated using the age-adjusted Short-Form 36 dimensions (physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health).Results: The mean age of the study population was 62.7±8.7 years; 54.0% were male, and 51.0% were receiving only oral hypoglycemic agents. Chronic complications were...

2. Depressão e priming de palavras positivas, neutras e negativas - Poinhos, Rui; Gaspar, N.
The objective of this study was to investigate the association between the level of depression in a nonclinical sampleand the performance on implicit memory (priming) tasks. One-hundred and twenty university students aged between18 and 27 years were randomly divided into two groups (conditions) based on different learning tasks butincluding the same word-stem completion task. The independent variable was the level of depression. Theindependent variable was the level of depression (Inventory of Clinical Assessment of Depression). The stimuliused were positive, neutral, and negative words. The results show a relationship between higher cognitive symptomsof depression and a reduced performance on word completion,...

3. Potassium urinary excretion and dietary intake: a cross-sectional analysis in 810 year-old children - Oliveira, Ana C.; Padrão, Patrícia; Moreira, A.; Pinto, M.; Neto, M.; Santos, T.; Madureira, J.; Fernandes, E.; Graça, Pedro; Breda, J.; Moreira, Pedro
Background: Data from studies assessing the intake of potassium, and the concomitant sodium-to-potassium ratio are limited. The aim of this study was to evaluate potassium and sodium-to-potassium ratio intake in 8-10 year-old children. Methods: A cross-sectional survey was carried out from January to June 2014 and data from 163 children (81 boys) were included. Potassium intake was estimated by 24-h urine collection and coefficient of creatinine was used to validate completeness of urine collections. Urinary sodium and sodium-to-potassium ratio were also analysed. A 24-h dietary recall was used to provide information on dietary sources of potassium. Height and weight were...

4. Validation Analysis of a Geriatric Dehydration Screening Tool in Community-Dwelling and Institutionalized Elderly People - Rodrigues, S.; Silva, J.; Severo, M.; Inacio, C.; Padrão, Patrícia; Lopes, Carla; Carvalho, J.; Carmo, I. do; Moreira, Pedro
Dehydration is common among elderly people. The aim of this study was to perform validation analysis of a geriatric dehydration-screening tool (DST) in the assessment of hydration status in elderly people. This tool was based on the DST proposed by Vivanti et al., which is composed by 11 items (four physical signs of dehydration and seven questions about thirst sensation, pain and mobility), with four questions extra about drinking habits. The resulting questionnaire was evaluated in a convenience sample comprising institutionalized (n = 29) and community-dwelling (n = 74) elderly people. Urinary parameters were assessed (24-h urine osmolality and volume)...

5. Health-related quality of life in type 1 and type 2 diabetic patients in a Portuguese central public hospital. - Sepúlveda, E.; Poinhos, Rui; Constante, M.; Pais-Ribeiro, J.; Freitas, P.; Carvalho ,D.
BACKGROUND: Diabetes mellitus is a chronic metabolic disease, the prevalence of which has registered a considerable increase, mainly in adults and elderly. The purpose of this study was to assess the relationship between health-related quality of life in patients with diabetes and sex, body mass index, type of diabetes and treatment regimens (type 1 diabetes: intensive versus conventional treatment; type 2 diabetes: insulin use versus non-insulin use), and duration of diabetes.METHODS: One hundred and twenty-four patients with diabetes were interviewed. Health-related quality of life was evaluated using the age-adjusted Short-Form 36 dimensions (physical functioning, role-physical, bodily pain, general health, vitality,...

6. Amino acids, glucose metabolism and clinical relevance for phenylketonuria management - Pena, MJ; Rocha, JC; Borges, Nuno
It is general knowledge that glycaemia is affected by digested nutrients.Amino acids intake appears to be an important regulator in this regard. Many questions need to be answered, such as the real mediators of this responseand the mechanisms underlying this metabolic behavior. Studies have been undertaken in order to investigate the role of amino acids on metabolic parameters. Their main fndings suggest that the ingestion of free aminoacids have a pivotal role in avoiding glycaemia excursions, improving glucosetolerance. In parallel, several important molecules for glucose metabolism have been exploited. Insulin and glucagon-like peptide 1 (GLP-1) release seemto be the main...

7. Insufficient voluntary intake of nutrients and energy in hospitalized patients - Tavares, MM; Matos, L; Amaral, TF
Aim: The aim of our study was to evaluate the inadequacy of voluntary energy and nutrient intake on the first day of hospital admission. Patients and methods: A cross-sectional study was carried out in two terciary care hospitals, with a probabilistic sample of 50% of in-patients. Dietary intake was evaluated by a 24-hour dietary recall, and undernutrition was screened through the Nutritional Risk Screening 2002 tool. The overall frequency of inadequate energy and nutrient intake was estimated using Dietary Reference Intakes. Results: Energy and nutrient intakes from 258 patients showed very low values for both men and women. No significant...

8. Accuracy of Siri and Brozek equations in the percent body fat estimation in older adults - Guerra, RS; Amaral, TF; Marques, E; Mota, J; Restivo, MT
To identify which equation, Siri or Brozek, based on the two compartment model, provides a more accurate conversion of body density (BD) in percent body fat (%BF) in a group of older adults. Cross-sectional study. Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto. 60 older adults, aged 60-92 years. Skinfold thickness was used to estimate BD through Visser et al. prediction equation. The conversion of BD to %BF was done with Siri (%BF-Siri) and Brozek (%BF-Brozek) formulas and these determined values were both compared to Dual-Energy X-ray Absorptiometry (%BF-DXA) evaluations. A strong correlation between...

9. Obesity and metabolic syndrome in 7-9 years-old Portuguese schoolchildren - Almeida, Maria Daniel Vaz de; Correia, Flora; Oliveira, Bruno M. P.; Albuquerque, Isabel; Simões-Pereira, Carlos
Background: Body fat is related to changes in lipid profile, blood pressure and metabolism of insulin and glucose,known as the metabolic syndrome (MS). The aim of this study was to estimate the prevalence of metabolic syndrome(MS) and its components among overweight and obese Portuguese schoolchildren, and to identify associated clinicaland biochemical characteristics.Methods: A total of 82 children (14 overweight and 68 obese; 40 boys and 42 girls) aged 7-9 years, underwentanthropometric measurements. A blood sample was obtained to assess biochemical parameters. Insulin resistance (IR)was determined by the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR). MS was defined by theNational Cholesterol...

10. Aleitamento materno e caracterização dos hábitos alimentares na primeira infância: experiência de São Tomé e Príncipe - Silva, Diana; Nóbrega, L.; Valente, A.; Dias, C.; Almeida, F.; Cruz, J.L.; Neves, E.; Afonso, C.; Guerra, A.
Objectives:to evaluate breastfeeding and the frequency and diversification of feeding, in children in São Tomé e Príncipe (STP).Methods:the sample comprised 1,285 children. The protocol included the prevalence of exclusive (EMB) and total (TMB) maternal breastfeeding, the onset of nutritional diversification (ND) and a questionnaire on the frequency of feeding. The statistics were processed using SPSS®. The results were presented in terms of the total sample.Results:45.5% of the babies were female and the mean age 26±18 months. 46.6% were given EMB up to the age of six months (mean 5±2). The mean for TMB was 12±7 months and the onset of...

11. Validation Analysis of a Geriatric Dehydration Screening Tool in Community-Dwelling and Institutionalized Elderly People - Rodrigues, S.; Silva, J.; Severo, M.; Inácio, C.; Padrão, Patrícia; Carvalho, J.; Carmo, I.; Moreira, Pedro
Abstract: Dehydration is common among elderly people. The aim of this study was to perform validation analysis of a geriatric dehydration-screening tool (DST) in the assessment of hydration status in elderly people. This tool was based on the DST proposed by Vivanti et al., which is composed by 11 items (four physical signs of dehydration and seven questions about thirst sensation, pain and mobility), with four questions extra about drinking habits. The resulting questionnaire was evaluated in a convenience sample comprising institutionalized (n = 29) and community-dwelling (n = 74) elderly people. Urinary parameters were assessed (24-h urine osmolality and...

12. Time and regional perspectives of food insecurity during the economic crisis in Portugal, 2011-2013 - Gregório, Maria João; Graça, Pedro; Costa, A.; Nogueira, P.J.
Food insecurity (FI) has received much attention inrecent years, even in high-income countries, due tothe increasing trend of poverty and social inequalitiesindicators, as a result of the global financialcrisis. The establishment of a monitoring system ofFI becomes a priority for food and nutrition policies.Our study aims to evaluate FI trends during theeconomic crisis in Portugal and to identify regionaldisparities throughout the country. Data derivedfrom three surveys conducted by the PortugueseDirectorate-General of Health, concerning FI of thePortuguese population, during the period that Portugalwas under the International Monetary Fundfinancial assistance program (20112013). Data werecollected by face-to-face interviews and FI was evaluatedusing a...

13. Promoting health equity in European children: design and methodology of the prospective EPHE (Epode for the Promotion of Health Equity) evaluation study - Mantziki, K.; Vassilopoulos, A.; Radulian, G.; Borys, J-M.; du Plessis, H.; Gregório, Maria João; Graça, Pedro; et al.
Background: Reducing health inequalities is a top priority of the public health agendas in Europe. The EPHE project aims to analyse the added value of a community-based interventional programme based on EPODE methodology, adapted for the reduction of socio-economic inequalities in childhood obesity. The interventions that will be implemented by this project focus on four energy balance-related behaviours (fruit and vegetable consumption, tap water intake, physical inactivity, sleep duration) and their determinants. This article presents the design of the effect evaluation of the EPHE project. Methods/Design: This is a prospective two-year follow-up evaluation study, which will collect data on the...

14. Psychological Determinants of Consumer Acceptance of Personalised Nutrition in 9 European Countries - Poinhos, Rui; van der Lans, I.A.; Rankin, A.; Fischer, A.; Bunting, B.; Kuznesof, S.; Stewart-Knox, B.; Frewer, L.
Objective: To develop a model of the psychological factors which predict peoples intention to adopt personalised nutrition. Potential determinants of adoption included perceived risk and benefit, perceived self-efficacy, internal locus of control and health commitment. Methods: A questionnaire, developed from exploratory study data and the existing theoretical literature, and including validated psychological scales was administered to N = 9381 participants from 9 European countries (Germany, Greece, Ireland, Poland, Portugal, Spain, the Netherlands, the UK, and Norway). Results: Structural equation modelling indicated that the greater participants perceived benefits to be associated with personalised nutrition, the more positive their attitudes were towards...

15. Ansiedade Social na Infância e Pré-Adolescência: Adaptação para o Português de Portugal da SASC-R - Martins, A.C; Almeida, J.P.; Viana, Victor
The Social Anxiety Scale for Children (revised form) - SASC-R evaluates the experience of social anxiety and avoidance felt by children and pre-adolescents in the context of relationship with their peers. This study aims to validate the Portuguese version of the SASC-R by confirmatory factor analysis using the structure proposed by the authors of the original scale. In a survey donewith 486 children between the ages of nine and 15 years, the results show that the scale reproduces the original factors, has a good internal consistency and a quite satisfactory construct validity. This study suggests that the SASC-R is a...

16. Piecewise RD dynamics on costs - M. Ferreira; B. M. P. M. Oliveira; Alberto Pinto

17. Protective effects of xanthohumol against the genotoxicity of heterocyclic aromatic amines MeIQx and PhIP in bacteria and in human hepatoma (HepG2) cells (vol 50, pg 949, 2012) - Viegas, Olga; Zegura, Bojana; Pezdric, Marko; Novak, Matjaz; Ferreira, Isabel; Pinho, Olívia; Filipic, Metka

18. Parallel increase in placental oxidative stress and antioxidant defenses occurs in type 1 but not gestational diabetes - Araújo, João; Ramalho, Carla; Branco, Ana; Faria, Ana; Ferraz, Tiago; Keating, Elisa; Martel, Fátima
We aimed to determine the oxidative stress status in placentas obtained from gestational (GDM) and type 1 (T1D) diabetic pregnancies. Malonaldehyde and protein carbonyls, two biomarkers of oxidative damage, were higher in T1D but not in GDM placentas. Also, higher reduced glutathione and lower oxidized glutathione levels and higher glutathione peroxidase activity were found in T1D but not in GDM placentas. These results suggest that T1D placentas may develop a protective antioxidant mechanism to overcome higher oxidative stress levels.

19. Corrigendum to ‘'Protective effects of xanthohumol against the genotoxicity of heterocyclic aromatic amines MeIQx and PhIP in bacteria and in human hepatoma (HepG2) cells' [Food and Chemical Toxicology 50 (2012) 949–955] - Viegas, Olga; Zegura, Bojana; Pezdric, Marko; Novak, Matjaz; Ferreira, Isabel; Pinho, Olívia; Filipic, Metka

20. Microbiological quality of ready-to-eat salads: An underestimated vehicle of bacteria and clinically relevant antibiotic resistance genes - Campos, Joana; Mourão, Joana; Pestana, Nazaré; Peixe, Luisa; Novais, Carla; Antunes, Patrícia
The increase demand for fresh vegetables is causing an expansion of the market for minimally processed vegetables along with new recognized food safety problems. To gain further insight on this topic we analyzed the microbiological quality of Portuguese ready-to-eat salads (RTS) and their role in the spread of bacteria carrying acquired antibiotic resistance genes, food products scarcely considered in surveillance studies. A total of 50 RTS (7 brands; split or mixed leaves, carrot, corn) were collected in 5 national supermarket chains in Porto region (2010). They were tested for aerobic mesophilic counts, coliforms and Escherichia coli counts as well as for the presence of Salmonella and...

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