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Search Results: 1 - 10 of 5160 matches for " Mariana Greco "
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Searching for the Lost Ostium: A Morphometric Analysis of the Ureteral Ostia Distribution in Normal and Thickened Bladders and Its Applications in Endourology  [PDF]
Mariana Greco, Paula Marsillac, Julia Vieira, Mario Brito, Andre Saud, Rafael Prinz, Joao Pereira-Correia
Open Journal of Urology (OJU) , 2013, DOI: 10.4236/oju.2013.33028
Abstract:

Introduction: The ureteral ostia may not be easily identified in urological endoscopic procedures, leading to an incomplete diagnosis of urinary tract diseases or a predisposition to iatrogenic lesions. The purpose of our study is to evaluate the anatomical distribution of ureteralostia in normal bladders and those with thickened walls. Materials and Methods: We dissected 30 vesical-prostate blocks from human cadavers and identified the ostia of the bladder trigone. A computerized morphometric analysis was performed to measure the thickness of the detrusor muscle, the distances between the ureteral ostia themselves and the distances between each ureteral ostium (left—LUO and right—RUO) and the internal urethral ostium (IUO). The angle formed between the IUO and LUO/RUO was also recorded as well as the volume of the prostates. Results: Fifteen bladders with a non-thickened detrusor (<5 mm) as well as 15 bladders with muscular thickening (>6 mm) were identified. The average prostatic volume of the dissected blocks was 23.7 cm3. The distance between ureteral ostia, the distance from IUO to LUO, the distance from IUO to RUO and the angle formed between IUO and LUO/RUO in normal and thickened bladder were, respectively, 1.9 cm/2.2 cm (p = 0.09), 1.6 cm/1.6 cm (p = 0.82), 1.6 cm/1.7 cm (p = 0.79) and 77/91 (p = 0.17). Conclusions: Our study shows that there is no significant difference in the position of bladder ostia in healthy and thickened bladders. We believe that our findings may facilitate locating the ureteral orifices in situations where endoscopic identification is difficult.

Aspectos relacionados com a otimiza??o do treinamento aeróbio para o alto rendimento
Oliveira, Mariana Fernandes Mendes de;Caputo, Fabrizio;Greco, Camila Coelho;Denadai, Benedito Sérgio;
Revista Brasileira de Medicina do Esporte , 2010, DOI: 10.1590/S1517-86922010000100012
Abstract: the objective of this work was to present recommendations aiming the aerobic training optimization, from the knowledge of the indexes of functional fitness and their physiological mechanisms. concerning highly trained athletes, the accuracy in training elaboration can be the safest way to improve aerobic performance, since for these individuals, it is normal that the training load is changeable between an insufficient stimulus and the overtraining syndrome symptoms onset. therefore, there are several factors that should be taken into account for the elaboration of a training program. the knowledge on fatigue mechanisms and physiological responses at different exercise intensities and durations is essential for the correct training session elaboration. moreover, high-intensity interval training is indispensable to improve performance in highly trained athletes; however, it should be performed only after adequate recovery period. thus, a good relationship between coach and athlete is also important for planning suitable recovery periods prior to excessive fatigue. the coach should keep accurate records of training loads and recovery times, learning hence the kinds of loads that can be individually tolerated. among the important factors that can affect aerobic performance during competition and should be considered, we can name appropriate warm-up planning and adverse environmental conditions. after collecting all this information, it is possible to elaborate the training bases (frequency, volume, intensity and recovery) aiming at progressive improvement of aerobic performance.
Fatores intrínsecos do custo energético da locomo??o durante a nata??o
Caputo, Fabrizio;Oliveira, Mariana Fernandes Mendes de;Denadai, Benedito Sérgio;Greco, Camila Coelho;
Revista Brasileira de Medicina do Esporte , 2006, DOI: 10.1590/S1517-86922006000600019
Abstract: the amount of metabolic energy spent in transporting the body mass of the subject over a unit of distance has been defined as the energy cost of locomotion, or regarding to swimming, cost of swimming. the differences in the cost of swimming between the individuals seem to be influenced by two main factors, the hydrodynamic resistance and technical skill of the swimmer. the lower cost of swimming showed by females has been attributed to a smaller hydrodynamic resistance due to their smaller size, larger percentage fat and more streamlined position. however, the difference in cost of swimming between males and females disappears when correcting for body size. with regard to children, the higher energy cost of swimming when correcting for body size may be caused by the lower swimming technique showed by them. for individuals with the same anthropometric characteristics, the better swimming technique and larger size of propelling surface, associated with higher propelling efficiency, may decrease the energy cost of swimming. when comparing different types of strokes, the most economical stroke is crawl, followed by backstroke, irrespective the swimming velocity. butterfly is the less economical at low velocities (< 0.8 m·s1). however, above that velocity the breaststroke become the less economical stroke.
Aerobic exercise: bioenergetics, physiological adjustments, fatigue and performance indices
Fabrizio Caputo,Mariana Fernandes Mendes de Oliveira,Camila Coelho Greco,Benedito Sérgio Denadai
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: The objective of this study was to present relevant updated information regarding the physiological determinants of aerobic training and performance. In contrast to common concepts, the aerobic metabolism rapidly responds to energy requirements,with the anaerobic and aerobic energy systems equally contributing to total energy production during maximal exercise lasting about 75 s. However, in the case of longer exercise duration the possible mechanisms of fatigue related to anaerobic metabolism are still the main determinants of exercise tolerance. Prolonged exercise (more than one hour) can be limited by several factors such as substrate depletion, water and electrolyte disturbance, or problems related to thermoregulation leading to an increase in body temperature. The most important variables of endurance performance have been organizedinto a model that integrates factors such as maximum oxygen uptake (VO2max), blood lactate thresholds, and muscle efficiency. For highly trained athletes, in addition to a high VO2max, success in endurance events also requires the ability to exercise forprolonged periods at a high percentage of VO2max, as well as to efficiently convert the energy produced into muscle work. Depending on the duration of the aerobic event, the training sessions should be aimed at improving VO2max, anaerobic lactate capacity andacidosis tolerance in the case of short-lasting events and aerobic capacity for events of intermediate duration, and at increasing muscle glycogen content and fat utilization in the case of long-lasting events.
Efeito da recupera??o na máxima fase estável de lactato sanguíneo
Souza, Mariana Rosada de;Barbosa, Luis Fabiano;Caritá, Renato Aparecido Corrêa;Denadai, Benedito Sérgio;Greco, Camila Coelho;
Motriz: Revista de Educa??o Física , 2011, DOI: 10.5016/1980-6574.2011v17n2p311
Abstract: the objective of this study was to compare the power corresponding to maximal lactate steady state determined through continuous (mlssc) and intermittent protocol with active recovery (mlssi). ten trained male cyclists (25 ± 4 yr., 72.5 ± 10.6 kg, 178.5 ± 4.0 cm), performed the following tests on a cycle ergometer: (1) incremental test until voluntary exhaustion to determine the maximal power (pmax); (2) two to five constant workload tests to determine mlssc, and; 3) two to three constant workload tests to determine mlssi, consisting on eight repetitions of four minutes interspersed by two minutes of recovery at 50% pmax. the mlssc (273.2 ± 21.4 w) was significantly lower than mlssi (300.5 ± 23.9 w). with base on these data, it can be verified that the intermittent exercise mode utilized in this study, allows an increase of 10% approximately, in the exercise intensity corresponding to mlss.
Efeitos do desempenho aeróbio na máxima fase estável de lactato sanguíneo determinada em protocolo intermitente na nata??o
Greco, Camila Coelho;Oliveira, Mariana Fernandes Mendes de;Caputo, Fabrizio;Pelarigo, Jailton Gregório;Denadai, Benedito Sérgio;
Revista Brasileira de Medicina do Esporte , 2010, DOI: 10.1590/S1517-86922010000200011
Abstract: endurance athletes frequently perform intermittent exercises with the aim to increase training intensity. a very important index in the evaluation of these athletes is the maximal lactate steady state (mlss), which is usually determined by a continuous protocol. however, the interruptions during intermittent exercise may alter the metabolic conditions of the exercise. the objective of this study was to compare the intensity at mlss determined by continuous (mlssc) and intermittent protocols (mlssi) in athletes with different aerobic performance levels. twelve male swimmers (22 ± 8 years, 69.9 ± 7.6 kg and 1.76 ± 0.07 m) and eight male triathletes (22 ± 9 years, 69.5 ± 10.4 kg and 1.76 ± 0.13 m) performed the following tests on different days in a 25 m swimming pool: 1) 400 m performance test (v400) 2) 2 to 4 repetitions with 30 min duration at different intensities to determine mlssc, and 4) 2-4 repetitions of 12 x 150 s with an interval of 30 s (5:1) at different intensities to determine mlssi. the swimmers showed v400 (1.38 ± 0.05 and 1.26 ± 0.06 ms-1, respectively), mlssc (1.23 ± 0.05 and 1.08 ± 0.04 ms-1, respectively) and mlssi (1.26 ± 0.05 and 1.11 ± 0.05 ms-1, respectively) values higher than triathletes. however, the percentage difference between mlssc and mlssi was statistically similar between groups (3%). there was no difference between blood lactate concentration at mlssc and mlssi in either group. based on these results, it can be concluded that the intermittent exercise used enables increase in the exercise intensity at mlss, without change in lactate concentration regardless of the aerobic performance level.
LAS EMOCIONES POSITIVAS: SU IMPORTANCIA EN EL MARCO DE LA PROMOCIóN DE LA SALUD MENTAL EN LA INFANCIA/ THE IMPORTATION OF POSITIVE EMOTIONS ON CHILDREN’S MENTAL HEALTH PROMOTION
Carolina Greco*
Liberabit , 2010,
Abstract: RESUMENEl estudio científico de las emociones positivas es un tópico recientemente explorado en la literatura psicológica a pesarde actuar como un factor protector en situaciones de adversidad, optimizar la salud y el bienestar y construir recursospersonales (Fredrickson, Cohn, Coffey, Finkel, Kimberly & Pek, 2008; Holder & Coleman, 2008). De ahí, la importanciade identificar, promover y fortalecer recursos psicológicos como las emociones positivas que puedan actuar como protectoresde salud mental en el marco de un programa de promoción de salud. El presente trabajo expone las recientesconceptualizaciones sobre el estudio científico de las emociones positivas, su importancia e incorporación en el dise o deprogramas orientados a la promoción de la salud mental infantil en pos de un desarrollo saludable y positivo en la infancia.ABSTRACTThe scientific study of positive emotions during childhood is a recently and less explored issue in the psychologyliterature although they work as protective factors in adversity situations, which allow the construction of better adaptivecoping mechanisms, improve health and contribute to the increasing of the psychological resources and well-being(Fredrickson, Cohn, Coffey, Finkel, Kimberly & Pek, 2008; Holder & Coleman, 2008). In this way it is necessary toidentify, enhance and foster psychological resources to the development of child mental health protective factors for themental health promotion programs. This paper exposes the recent theory about positive emotions, their importance andenclosing in the mental health promotion program for the promotion of positive and healthy development during childhood.
Prophets of Secularism: Hume Before Bentham? Reply to Schofield
Lorenzo Greco
Philosophy and Public Issues , 2011,
Abstract:
Accessibility and usability of the architectural heritage: chances for a “social” sustainability of the building restoration Accessibilità e fruibilità del patrimonio architettonico: occasioni per una sostenibilità “sociale” del recupero
Alessandro Greco
In_Bo : Ricerche e Progetti per il Territorio, la Città e l'Architettura , 2012, DOI: 10.6092/issn.2036-1602/3486
Abstract: The topic of accessibility and usability of the historical-architectural heritage is becoming increasingly important at a national and European level, also for the important functions that are normally inserted in buildings with high cultural and documentary value, often located in the historical centre of the towns or in areas of high environmental value. This writing proposes general reflections on the "social" importance of the accessibility to the historic building heritage and offers suggestions for an approach to the design of accessibility according to a method aware of the complexity of the subject, participated and multidisciplinary. The text is completed with the report of two applied researches (one to the urban scale and one to the construction scale) developed according to this method. Il tema dell’accessibilità e della fruibilità del patrimonio storico – architettonico sta assumendo sempre più rilevanza nel contesto nazionale, e in quello europeo più in generale, anche per le importanti funzioni che normalmente vengono inserite in contenitori edilizi dall’elevato valore culturale e documentale, collocati spesso nel centro storico delle città oppure in aree di elevato pregio ambientale. Il contributo propone riflessioni di carattere generale sull’importanza “sociale” dell’accessibilità al patrimonio edilizio storico e offre spunti per un approccio alla progettazione dell’accessibilità secondo un metodo consapevole della complessità del tema, partecipato e multidisciplinare. Il testo si completa con l’illustrazione di due ricerche applicate (una alla scala urbana e una alla scala edilizia) sviluppate secondo tale metodo.
Il Sidereus Nencius e l'origine della comunicazione pubblica della scienza
Pietro Greco
S&F_scienzaefilosofia.it , 2010,
Abstract:
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