A importância do exercício nórdico na prevenção de lesões nos isquiotibiais no futebol masculino: revisão de literatura

Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em FisioterapiaObjetivo: Perceber a influência do exercício nórdico na prevenção de lesões nos isquiotibiais no futebol masculino. Metodologia: Foi realizada uma pesquisa computorizada nas bases de dados PubMed, Cochrane e PEDro para identificar estudos randomizados que incluíssem o exercício nórdico e o relacionassem com treino preventivo de lesões isquiotibiais no futebol masculino. Resultados: Foram incluídos 3 estudos, com uma classificação média de 5,66 na escala de PEDro, numa amostra total de 1553 atletas, em que a amostra mínima foi de 32 e a máxima de 942 participantes. Os 3 artigos analisados, mostram que o exercício nórdico reduziu a incidência de lesão nos grupos de intervenção. Conclusão: O exercício nórdico reduz a probabilidade de lesão dos isquiotibiais no futebol.Objective: Influence of nordic exercise on the prevention of hamstring injuries in men's soccer. Methodology: A computerized research was made in PubMed, Cochrane and PEDro for identification randomized studies that included nordic exercise and related it with preventive training of hamstring injuries in men’s soccer. Results: Three trials were included, with an average score of 5.66 on the PEDro scale, with a total sample of 1553 athletes, the minimum sample was 32 and the maximum of 942 participants. The three papers analyzed, show that nordic exercise reduced the incidence of injurys in the intervention groups. Conclusion: Nordic exercise reduces the probability of hamstring injury in soccer.N/

MoS2 nanosheets as interlayer in Li-S batteries

This work has investigated the use of MoS2 nanosheets acting as an interlayer to effectively block polysulfide shuttling (movement from cathode to the anode) in Li-S batteries. In the first part of the work we exfoliated bulk MoS2 into a few layered MoS2 flakes, resulting in increased surface area and improved electric properties, to achieve a better interlayer performance by effectively trapping polysulfide (PS) in the cathode. This was done through solvothermal lithium intercalation followed by water sonication, creating a reaction between water and intercalated lithium to promote exfoliation. In the second part was explored the electrochemical characterization of distinct Li-S test cells (each with different interlayers), and compared to a standardized Li-S test cell. The afore mentioned interlayers were spread either on to the cathode or the separator. Furthermore, carbon black, bulk and exfoliated MoS2, were compared as active materials of the interlayers. Bulk MoS2 exfoliation into thinner flake, resulted in a size reduction up to 56 times and a decrease in the number of layers. The results of optical spectroscopy suggest effects of quantum confinement. Furthermore, with XRD, was analytically demonstrated successful intercalation and exfoliation. Then, through Raman and SEM analysis demonstrated evidence of thinner MoS2 structures. On another hand, exfoliated MoS2 was spread on a sulfur cathode creating the interlayer that successfully trapped polysulfides. This was showed through a 4 percentage points increase in sulfur utilization for the first cycle, and an improvement of sulfur loss by cycle of 0.02% retaining a good 99.4% coulombic efficiency. In addition a ΔE decreased of 45%, a result of improved battery kinetics. Nonetheless a simple carbon black DL interlayer was also made using a different solvent. However was observed a increase of sulfur utilization by 9% in the first cycle and the same degradation of sulfur per cycle as the standard battery with an impressive CE of 99.7%

Waist-to-height ratio is independently related to whole and central body fat, regardless of the waist circumference measurement protocol, in non-alcoholic fatty liver disease patients

This is the peer reviewed version of the following article: Pimenta N.M., Cortez-Pinto H., Melo X., Silva-Nunes J., Sardinha L.B. & Santa-Clara H. (2017) Waist-to-height ratio is independently related to whole and central body fat, regardless of the waist circumference measurement protocol, in non-alcoholic fatty liver disease patients. J Hum Nutr Diet. 30, 185–192, which has been published in final form atdoi: 10.1111/jhn.12410. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.Background: Waist-to-height ratio (WHtR) has been reported as a prefer-able risk related body fat (BF) marker, although no standardised waistcircumference measurement protocol (WCmp) has been proposed. Thepresent study aimed to investigate whether the use of a different WCmpaffects the strength of relationship between WHtR and both whole andcentral BF in non-alcoholic fatty liver disease (NAFLD) patients.Methods: BF was assessed with dual energy X-ray absorptiometry (DXA) in28 NAFLD patients [19 males, mean (SD) 51 (13) years and nine females,47 (13) years]. All subjects also underwent anthropometric evaluationincluding height and waist circumference (WC) measurement using fourdifferent WCmp (WC1, minimal waist; WC2, iliac crest; WC3, mid-distancebetween iliac crest and lowest rib; WC4, at the umbilicus) and WHtR wascalculated using each WC measurements (WHtR1, WHtR2, WHtR3 andWHtR4, respectively). Partial correlations were conducted to assess the rela-tion of WHtR and DXA assessed BF.Results: All WHtR were particularly correlated with central BF, includingabdominal BF (r = 0.80, r = 0.84, r = 0.84 and r = 0.78, respectively, forWHtR1, WHtR2, WHtR3 and WHtR4) and central abdominal BF (r = 0.72,r = 0.77, r = 0.76 and r = 0.71, respectively, for WHtR1, WHtR2, WHtR3and WHtR4), after controlling for age, sex and body mass index. There wereno differences between the correlation coefficients obtained between allstudied WHtR and each whole and central BF variable.Conclusions: Waist-to-height ratio was found a suitable BF marker in thepresent sample of NAFLD patients and the strength of the relationshipbetween WHtR and both whole and central BF was not altered by usingdifferent WCmp in the present sample of NAFLD patients.FUNDING SOURCES The first author of this paper was supported by a research grant (PhD scholarship) from the Foundation for Science and Technology (FCT), Ministry of Education and Science of Portugal (grant: SFRH/ BD/ 70515/ 2010). The present study was funded by: the Centre for the Study of Human Performance, Portuguese Foundation for Science and Technology, Lisbon, Portugal.info:eu-repo/semantics/publishedVersio

Giulio Douhet e John Warden. Aspectos Evolutivos da Teoria do Poder Aéreo

Neste trabalho, procuram-se verificar as interacções estratégicas que se desenvolveram com o aparecimento e evolução do avião enquanto instrumento bélico. Para tal, faz-se uma revisão crítica do pensamento doutrinal desenvolvido por Giulio Douhet, enquanto primeiro teorizador profundo do emprego do Poder Aéreo, e de John Warden, último teórico a elaborar uma interpretação teórico-prática da e para a Estratégia Aérea, que se materializou durante o primeiro conflito do Golfo Pérsico. Desta forma, interpreta-se a evolução da doutrinação estratégica militar e em particular, da estratégia militar aérea, sobretudo no tocante ao conceito de bombardeamento estratégico e sua articulação com o de paralisia estratégica, essenciais na consubstanciação do Poder Aéreo e seu empreg

The acute effect of maximal exercise on central and peripheral arterial stiffness indices and hemodynamics in children and adults

Xavier Melo is supported by a research grant from the Foundation for Science and Technology (FCT), Ministry of Education and Science of Portugal (grant: SFRH/ BD/ 70515/ 2010). Nuno M. Pimenta is cofinanced by national funds through the Programa Operacional do Alentejo 2007-2013 (ALENT-07-0262- FEDER-001883)This study compared the effects of a bout of maximal running exercise on arterial stiffness in children and adults. Right carotid blood pressure and artery stiffness indices measured by pulse wave velocity (PWV), compliance and distensibility coefficients, stiffness index α and β (echo-tracking), contralateral carotid blood pressure, and upper and lower limb and central/aortic PWV (applanation tonometry) were taken at rest and 10 min after a bout of maximal treadmill running in 34 children (7.38 ± 0.38 years) and 45 young adults (25.22 ± 0.91 years) having similar aerobic potential. Two-by-two repeated measures analysis of variance and analysis of covariance were used to detect differences with exercise between groups. Carotid pulse pressure (PP; η(2) = 0.394) increased more in adults after exercise (p < 0.05). Compliance (η(2) = 0.385) decreased in particular in adults and in those with high changes in distending pressure, similarly to stiffness index α and β. Carotid PWV increased more in adults and was related to local changes in PP but not mean arterial pressure (MAP). Stiffness in the lower limbs decreased (η(2) = 0.115) but apparently only in those with small MAP changes (η(2) = 0.111). No significant exercise or group interaction effects were found when variables were adjusted to height. An acute bout of maximal exercise can alter arterial stiffness and hemodynamics in the carotid artery and within the active muscle beds. Arterial stiffness and hemodynamic response to metabolic demands during exercise in children simply reflect their smaller body size and may not indicate a particular physiological difference compared with adults.info:eu-repo/semantics/publishedVersio

Implementation of an activity-based costing system in an amenities manufacturer - model´s construction, usefulness and profitability analysis

The following Work Project entails the development and implementation of an Activity-Based Costing system within a Portuguese firm in the amenities’ manufacturing and commercialization industry. The model was divided into two parts, one regarding product costing and the other considering order processing costs. Its main objective is to ensure the company's accurate costing and provide an easy and adaptable tool that allows for a faster and more reliable bidding process. The analysis has revealed remarkable results regarding products, lines, and clients’ profitability. Furthermore, the sustainability of the firm’s online store was evaluated

Los riesgos geológicos en la Ordenación Territorial

There are wide areas of the planet where the incidence of natural catastrophes is very high, particularly in areas with high population density or where areas under natural risks are occupied. Most of these areas belong to a clear tectonic setting.In addition, public awareness on these natural catastrophic phenomenon acquires nowadays an additional dimension due to the important role of mass media. Mass media informs immediately al1 over the world on these caastrophes, for example, the big earthquakes (Mexico, California, Japan), landslides, floods, eruptions, hurricanes, etc.These geological phenomena are caused by the normal processes within the earth's crust, which have social and economic consequences. These processes have shaped our planet,with more or less dramatic consequences depending on their speed and intensity.Catastrophic events are gauged by their environmental effects, mainly on the biosphere. Socioeconomic disasters have also augmented as the increase and concentration of population have increased the risk on populated areas.Finally, the necessity of preventive measures is clear on global risks, such as the effects of global warming of those resulting from the management of water resources.

Waist circumference in Liver Disease

Background Central fat accumulation is important in Non-alcoholic Fatty Liver Disease (NAFLD) etiology. It is unknown weather any commonly used waist circumference (WC) measurement protocol (mp), as whole and central fat accumulation marker, is preferable for patients with NAFLD. The present study sought to find a preferable WC mp to be used in patients with NAFLD, based on three-fold criterion. Material and methods Body fat (BF) was assessed through Dual Energy X-ray Absorptiometry (DXA) in 28 patients with NAFLD (19 males, 51 + 13 yrs, and 9 females, 47 + 13 yrs). WC was measured using four different WC mp (WC1-narrowest torso, WC2- just above iliac crest, WC3- mid-distance between iliac crest and last rib and WC4- at the umbilicus). Results All WC measurements were highly correlated particularly with central BF depots, including trunk BF (r=0.78; r=0.82; r=0.82; r=0.84; respectively for WC1, WC2, WC3 and WC4) abdominal BF (r=0.78; r=0.78; r=0.80; r=0.72; respectively for WC1, WC2, WC3 and WC4) and central abdominal BF (r=0.76; r=0.77; r=0.78; r=0.68; respectively for WC1, WC2, WC3 and WC4), controlling for age, sex and body mass index. There were no differences between the correlation coefficients obtained between all studied WC measurements and each whole and central analyzed BF variable. Conclusion All studied WC mp seem suitable for use in patients with NAFLD, particularly as central BF clinical assessment tool, though not interchangeably. Hence biological and precision criteria alone did not sanction the superiority of any WC mp. Practical criteria may endorse WC measured at the iliac crest.info:eu-repo/semantics/publishedVersio

Waist-to-Hip Ratio is Related to Body Fat Content and Distribution Regardless of the Waist Circumference Measurement Protocol, in Non-Alcoholic Fatty Liver Disease Patients

Central accumulation and distribution of body fat (BF) is an important cardiometabolic risk factor. Waist-to-hip ratio (WHR), commonly elevated in non-alcoholic fatty liver disease (NAFLD) patients, has been endorsed as a risk related marker of central BF content and distribution, but no standardized waist circumference measurement protocol (WCmp) has been proposed. We aimed to investigate whether using different WCmp affects the strength of association between WHR and BF content and distribution in NAFLD patients. BF was assessed with Dual Energy X-ray Absorptiometry (DXA) in 28 NAFLD patients (19 males, 51 ± 13 yrs, and 9 females, 47 ± 13 yrs). Waist circumference (WC) was measured using four different WCmp (WC1: minimal waist; WC2: iliac crest; WC3: mid-distance between iliac crest and lowest rib; WC4: at the umbilicus) and WHR was calculated accordingly (WHR1, WHR2, WHR3 and WHR4, respectively). High WHR was found in up to 84.6% of subjects, depending on the WHR considered. With the exception of WHR1, all WHR correlated well with abdominal BF (r=0.47 for WHR1; r=0.59 for WHR2 and WHR3; r=0.58 for WHR4) and BF distribution (r=0.45 for WHR1; r=0.56 for WHR2 and WHR3; r=0.51 for WHR4), controlling for age, sex and body mass index (BMI). WHR2 and WHR3 diagnosed exactly the same prevalence of high WHR (76.9%). The present study confirms the strong relation between WHR and central BF, regardless of WCmp used, in NAFLD patients. WHR2 and WHR3 seemed preferable for use in clinical practice, interchangeably, for the diagnosis of high WHR in NAFLD patients.co-financed by national funds through the Programa Operacional do Alentejo (ALENT-07-0262-FEDER-001883)info:eu-repo/semantics/publishedVersio