Antioxidants and cardioprotective effects of ethyl acetate fraction of Canavalia rosea leaves in myocardial ischemia-reperfusion injury.

Different degrees in the biological activities of Canavalia rosea had been previously reported . In this study, our group assessed the cardioprotective effects of the ethyl acetate fraction (EAcF) of the Canavalia rosea leaves. Firstly, it was confirmed, by in vitro approach, that the EAcF has high antioxidant properties due to the presence of important secondary metabolites, as flavonoids. In order to explore their potential protector against cardiovascular disorders, hearts were previously perfused with EAcF (300 µg.mL-1) and submitted to the global ischemia followed by reperfusion in Langendorff system. The present findings have demonstrated that EAcF restored the left ventricular developed pressure and decreased the arrhythmias severity index. Furthermore, EAcF significantly increased the glutathiones peroxidase activity with decreased malondialdehyde and creatine kinase levels. EAcF was effective upon neither the superoxide dismutase, glutationes reductase nor the catalase activities. In addition, the Western blot analysis revealed that ischemia-reperfusion injury significantly upregulates caspase 3 protein expression, while EAcF abolishes this effect. These results provide evidence that the EAcF reestablishes the cardiac contractility and prevents arrhythmias; it is suggested that EAcF could be used to reduce injury caused by cardiac reperfusion. However more clinical studies should be performed, before applying it in the clinic.

Synthesis of chalcone derivatives by Claisen-Schmidt condensation and in vitro analyses of their antiprotozoal activities.

Chalcone is a molecule with known biological activities. Based on this, a series of chalcone derivatives bearing methyl, phenyl or furanyl substituents at different positions of A and B rings were synthesised, characterised, and evaluated regarding antiprotozoal activity. Molecules were synthesised via base catalyzed Claisen-Schmidt condensation and characterised by IR and NMR spectral data. Antiprotozoal activity against Phytomonas serpens, Leishmania amazonensis and Acanthamoeba polyphaga was performed. All compounds inhibited more than 50% of the growth of P. serpens while five had this effect on L. amazonensis and all of them no more than 35% of inhibition on A. polyphaga. Remarkably interesting antiprotozoal effects were recorded with compound 5, with IC50 of 1.59 µM for P. serpens and 11.49 µM for L. amazonensis. The addition of a naphthyl group to the B ring can be postulated to be the cause of the 10 times increase observed in its trypanocidal activity.

Chalcone-based molecules: Experimental and theoretical studies on the two-photon absorption and molecular first hyperpolarizability.

Five chalcone-based molecules denominated by C-3 ((E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-one), C-4 ((E)-1,3-bis(4-methoxyphenyl)prop-2-en-1-one), C-5 ((E)-1-(benzo[d][1,3]dioxol-5-yl)-3-(4-methoxyphenyl)prop-2-en-1-one), C-6 ((E)-3-(naphthalen-1-yl)-1-phenylprop-2-en-1-one) and C-7 ((E)-1-(4-methoxyphenyl)-3-(naphthalen-1-yl)prop-2-en-1-one) were synthesized by Claisen-Schmidt reaction in solution of NaOH in water/ethanol 2:1. The aldehydes used were benzaldehyde, anisaldehyde, and ß-naphthaldehyde, while the used ketones were acetophenone, p-methoxyacetophenone, and 3,4-methylenedioxyacetophenone. Z-scan and hyper-Rayleigh scattering techniques were used to study the nonlinear optical properties of these compounds in dichloromethane medium. By using Z-scan technique with femtosecond pulses, two-photon absorption cross-sections (σTPA) were determined, while the first molecular electronic hyperpolarizabilities (ßHRS) were evaluated by the hyper-Rayleigh scattering technique, with picosecond pulses. From the recorded two-photon absorption spectra, it was identified that compound C-7 presented the highest σTPA, regarding the HOMO-LUMO transition, with a value of 40 GM, while C-6 achieved the lowest value for the same transition with 13 GM. Concerning the values of the first molecular hyperpolarizability, compound C-4 presented the highest value, 38 × 10-30 cm4 statvolt-1, while C-3 presented the lowest ßHRS value of about 16 × 10-30 cm4 statvolt-1. Time-dependent density functional theory calculations were used to simulate the one- and two-photon absorption spectra, as well to predict the theoretical value of ßHRS in dichloromethane and vacuum medium.

Exploring the importance of coaches in the development of the sports career in Handball. The perception of athletes from higher and lower levels of success / Explorando la importancia de los entrenadores en el desarrollo de la carrera deportiva en Balonmano. La percepción de los atletas de niveles superiores e inferiores de éxito / Explorando a importância dos treinadores no desenvolvimento da carreira desportiva no Andebol. A perceção dos atletas de diferentes níveis de sucesso

Our study aims to analyse the perception of elite handball players, belonging to generations with different levels of success, on: i) how they characterize their most important club and national team coach; ii) how they characterize their preferential coach in the different stages of their sports career (Bloom, 1985). Fourteen athletes were interviewed based on the interview protocol of Gould, Dieffenbach and Moffett (2002). In the specialization years, the most successful athletes reported that they had one coach in the club, and at the same time a national team coach, that permanently marked their sports career and their personality. All athletes reported that detailed knowledge about the sport was the most important characteristic of their most important club and national team coaches, throughout the specialization years in addition to a strong insistence on perfection. According to the perception of the most successful athletes, their reference coaches taught directly and indirectly (caring, paying attention, shaping the personality) and also emphasized expectations, hard work, discipline and the attitude that hard work pays off. In addition, both club and national team coaches devoted their time to the planning of individualized training programs, particularly in the specializations years

Nuestro estudio investigó la percepción de los jugadores de balonmano de élite, pertenecientes a equipos nacionales que durante las primeras etapas de su carrera han tenido éxito similar, pero con diferentes niveles de éxito a nivel senior, sobre el entrenador del equipo nacional y del club que más los influencio. Catorce atletas fueron entrevistados según el protocolo de Gould, Dieffenbach y Moffett (2002). En los años de especialización (Bloom, 1985), los atletas más exitosos informaron que han tenido un entrenador en el club y un entrenador del equipo nacional, que marcó permanentemente su carrera deportiva y su personalidad. Según ellos, estos entrenadores, enseñaron directa e indirectamente (cuidando, prestando atención individual), enfatizaron sus expectativas, y la actitud que el trabajo duro compensa. Se concluye que el entrenador parece desempeñar un papel determinante en el desarrollo de los atletas, destacando así la importancia de promover y salvaguardar la calidad de su formación

Este estudo investigou a perceção de jogadores de andebol, pertencentes às seleções nacionais que durante as primeiras etapas das suas carreiras tiveram o mesmo nível de êxito, mas com diferente nível de sucesso no escalão sénior, sobre o selecionador nacional e o treinador do clube que mais os marcaram. Foram entrevistados catorze atletas com base no protocolo de Gould, Dieffenbach e Moffett (2002). Os resultados demonstram que nos anos de especialização (Bloom, 1985), os atletas de maior sucesso mencionaram que tiveram um treinador e um selecionador, que marcou permanentemente a sua carreira desportiva e a sua personalidade. Segundo eles, os seus treinadores de referência ensinavam direta e indiretamente (cuidando, prestando atenção individual), enfatizavam as suas expectativas e a atitude que o trabalho duro compensa. Conclui-se que o treinador parece desempenhar um papel determinante no desenvolvimento dos atletas, destacando assim a importância de promover e salvaguardar a qualidade da sua formação

Relationship of Psychological Factors to Temporomandibular Disorders in Children.

This study evaluated the incidence of TMDs and their relationship to psychological factors in children ages 6 to 12 years who sought dental treatment at the Ponta Grossa State University. Following ethics committee approval and informed consent, 75 children were included in the study. Exclusion criteria were craniofacial malformations, history of orthodontic treatment and maxillary fractures. TMD severity was classified, using the Fonseca anamnesis index questionnaire, as "no TMD" (control) and "mild," "moderate" and "severe." Parents completed the Child Behavior Checklist, which measures behavior problems and competencies. Data were analyzed using the Chi-square test (a=0.01). Regardless of gender, 40 children had internalizing problems (with TMD, n=32; without TMD, n=8). Children presenting internalizing problems and TMD were classified as having mild (n=23), moderate (n=8) and severe TMD (n=1). Thirty-one children interviewed had externalizing problems (with TMD, n=24; without TMD, n=7). Children presenting externalizing problems and TMD were classified as having mild (n=18), moderate (n=5) and severe TMD (n=1). In addition, 36 children had behavior problems (with TMD, n=26; without TMD, n=10), of whom 19 children had mild, 6 children had moderate and 1 child had severe TMD. Psychological problems were related to TMD in Brazilian children ages 6 to 12.

Como distinguir jovens atletas que tencionam continuar a praticar desporto dos que não tencionam continuar a fazê-lo? / ¿Cómo distinguir entre jóvenes atletas que tienen la intención de continuar practicando deporte de los que no piensan continuar haciéndolo? / How to distinguish between young athletes who intend to continue playing sports and those who do not intend to continue doing it?

O objectivo do presente estudo consistiu em verificar se seria possível distinguir jovens atletas que tencionavam continuar a praticar desporto dos que equacionavam não continuar a fazê-lo, com base nos seus objectivos de realização, crenças sobre a competência desportiva, competência percebida, motivação intrínseca e autonomia na prática. A amostra foi constituída por 3330 atletas de ambos os sexos, com idades entre os 10 e os 18 anos. Os sujeitos preencheram as versões portuguesas do Questionnaire de Conceptions Relatives à la Nature de l´Habilité Sportive, do Task and Ego Orientation in Sport Questionnaire, do Intrinsic Motivation Inventory, do Relative Autonomy Index, do Physical Self-Perception Profile, e, ainda, o Questionário sobre a Intenção de Praticar Desporto. Os resultados mostraram que, com base no conhecimento do modo como os jovens se percebiam (em relação à sua competência e autonomia) e posicionavam (que objectivos procuravam alcançar e que motivação intrínseca apresentavam) relativamente à sua prática desportiva, foi possível distinguir entre aqueles que tencionavam continuar envolvidos na prática desportiva e os que não o tencionavam fazer. À intenção de continuar associaram-se a motivação intrínseca, a autodeterminação, a competência percebida, e a crença de que a competência desportiva não é específica; à intenção de não praticar desporto na época seguinte associaram-se formas de motivação menos autodeterminadas e a crença de que a competência desportiva é algo específico a um contexto ou actividade. Apesar de genericamente semelhantes, as respostas dos atletas dos dois sexos sugeriram algumas ligeiras diferenças entre eles e elas (AU)

El objetivo de este estudio fue verificar si sería posible distinguir entre atletas jóvenes que tenían la intención de seguir practicando deporte y aquellos que no tenían intenciones de continuar, en función de sus orientaciones de metas, creencias acerca de su habilidad deportiva, competencia percibida, motivación intrínseca y autonomía. Tres mil e trescientos atletas de ambos sexos, con edades entre 10 y 18 años, completaron las versiones portuguesas del Questionnaire de Conceptions Relatives à la Nature de l´Habilité Sportive, del Task and Ego Orientation in Sport Questionnaire, del Intrinsic Motivation Inventory, del Relative Autonomy Index, del Physical Self-Perception Profile, y el Questionário sobre a Intenção de Praticar Desporto. Los resultados mostraron que, con base en el conocimiento de cómo los jóvenes se perciben a sí mismos (su competencia y autonomía) y del modo como se posicionan (sus metas y motivación intrínseca) en relación a su deporte, era posible distinguir entre aquellos que tenían la intención de continuar haciendo deporte y los que no tenían esa intención. La intención de continuar estaba asociada con la motivación intrínseca, la autodeterminación, la competencia percibida, y la creencia de que la habilidad deportiva no es específica; la intención de no continuar en la temporada siguiente se asoció con formas menos auto determinadas de motivación y con la creencia de que la habilidad deportiva es algo específico a un contexto/ actividad. Aunque en general fueran similares, las respuestas de los atletas de ambos sexos sugirieron ligeras diferencias entre niñas y varones (AU)

The aim of this study was to verify whether it was possible to distinguish between young athletes who intended to continue playing sports and those who intended to dropout, based on their achievement goal, beliefs about their sport competence, perceived competence, intrinsic motivation and autonomy in sport practice. Three thousand and three hundred athletes of both sexes, aged between 10 and 18 years, completed the Portuguese versions of the Questionnaire de Conceptions Relatives à la Nature de l´Habilité Sportive [Conceptions About the Nature of Sport Competence Questionnaire], the Task and Ego Orientation in Sport Questionnaire, the Intrinsic Motivation Inventory, the Relative Autonomy Index, the Physical Self-Perception Profile, and also the Questionário sobre a Intenção de Praticar Desporto [Intention of Playing Sport Questionnaire]. The results showed that, based on the knowledge of how the participants perceived themselves (in relation to their competence and autonomy) and their standing (their goals and their intrinsic motivation) regarding their sport, it was possible to distinguish between those who intended to remain involved in sport and those who did not intend to do so. The intention to persist was associated with intrinsic motivation, self-determination, perceived competence, and the belief that sport competence is not specific; the intention to drop out of sport the next season was associated with less self-determined forms of motivation and the belief that sport competence is specific to a context or activity. Although generally similar, the responses of athletes of both sexes suggested some slight differences between boys and girls (AU)

In vitro effects of arylhydrocoumarin on free radicals and oxidative stress in erythrocytes and Saccharomyces cerevisiae.

Neoflavonoids comprise a group of natural compounds with varied chemical structures and promising pharmacological properties, including antioxidant capacity. This work describes an evaluation of the in vitro antioxidant capacity of a new coumarin derivative, i.e., 7-acetoxy-4-aryl-3,4-dihydrocoumarin, in terms of its ability to quench the 2,2- diphenyl-1-picrylhydrazyl (DPPH•), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+), hydroxyl (OH•) and superoxide anion (O2(•-)) radicals, as well as its capacity to initiate electron transfer by reducing potential and inhibit lipid peroxidation by TBARS (thiobarbituric acid reactive substances) method. In addition, the antioxidant capacity of 7-acetoxy-4-aryl-3,4-dihydrocoumarin was evaluated against oxidative damage induced by hydrogen peroxide in erythrocyte suspensions and S. cerevisiae strains. In all methodologies investigated, high antioxidant capacities above 65% were demonstrated by 7-acetoxy-4-aryl-3,4-dihydrocoumarin against the DPPH(•), ABTS(•+), OH(•) and O2(•-) radicals. The ability of 7-acetoxy-4-aryl-3,4-dihydrocoumarin to inhibit oxidative damage induced by hydrogen peroxide in erythrocytes and S. cerevisiae strains demonstrates the importance of this compound in the protection against oxidative stress at the cellular level. Thus, the results obtained in this study suggest that 7-acetoxy-4-aryl-3,4-dihydrocoumarin can assist the development of new antioxidant products for possible use in the prevention or reduction of diseases related to oxidative stress.

Actinic cheilitis: Epidemiological study in a riverine population of northern Brazil

AIM: The aim of this survey was to assess the prevalence of AC in riverine population in countryside of Amazonas, northern Brazil. MATERIAL AND METHODS: Patients answered a questionnaire and were examined between January and December of 2008. Data were gathered on the following participant's characteristics: 1) age group; 2) gender; 3) ethnicity 4) outdoor activities (sunlight exposure); 5) smoking habits; 6) drinking habits; and 7) access to oral health services (the last dental visit). Clinical observation of the lips for determination of AC presence was used. Patients who presented clinical manifestation of moderate and severe AC were submitted to incisional biopsy to confirm the diagnosis. In case of a positive result after histopathological examination, patients were advised and appropriate treatment was offered. All patients received information about AC and its prevention. RESULTS: Among the 200 participants that were examined, the prevalence of AC was 2% (4 cases). Of all patients surveyed, women were the majority totalizing 124 patients (72.0%). According to age, 48 (24.0%) people were 20-34 year-old; 42 (21.0%) were 35-44-year-old; 50 (25.0%) were 45-60-year-old; and 60 (30.0%) were 61 or older. CONCLUSION: Even though AC was present in a low prevalence rate, an epidemiological variety is expected, once geographic and ethnic differences should be considered.

From early to adult sport success: analysing athletes' progression in national squads.

Although some prospective studies have shown that many successful young athletes do not maintain the same level of success when they reach adulthood, there is still a lack of information regarding athletes who started their international involvement at early ages. Therefore, the purpose of the present study was to investigate the international pathway of male and female athletes in different sports from the moment of their competitive debut, in order to determine how many international athletes at early ages competed or did not compete internationally as juniors and/or seniors. The sample included 395 athletes (soccer, volleyball, swimming and judo), born between 1974 and 1981, who could have competed in their national squads between 1988 and 2008. Results showed that only a third of international pre-junior athletes reappeared as senior athletes, confirming the difficulties of predicting late success based on early identification and selection.

Sobre o desenvolvimento do talento no desporto: um contributo dos modelos teóricos do desenvolvimento desportivo / Athlete development models

Con este artículo, se pretende, globalmente, sintetizar algunos de los avances más importantes de las últimas décadas sobre el tema del talento en deporte, pero también contribuir para que los diferentes agentes deportivos, particularmente dirigentes y entrenadores, los pueden reconocer y aplicar en sus prácticas. Así, inicialmente se presenta una breve evolución histórica que procura explorar como si ha pasado de una perspectiva basado en la idea de la detección de rasgos innatos que podrían predecir el éxito deportivo, para una perspectiva de desarrollo del talento y para un marco holístico de lo atleta y de su contexto. En seguida, lo artículo presenta una retrospectiva sobre varios modelos teóricos que han sido avanzados en lo ámbito de la psicología del deporte, a saber, modelos basados en las transiciones de la carrera y los basados en lo desarrollo del talento y de la pericia. Finalmente en cuanto modelo conceptual más referenciado en la literatura, se hace una análisis con detalle del Modelo de Desarrollo de la Participación Deportiva (Côté, Baker y Abernethy, 2007), en particular con respecto a los procesos de desarrollo relativos a las normas de entrenamiento (e.g., diversificación y especialización) y las influencias psicosociales, aspectos que están en la base de todo el desarrollo del atleta (AU)

With this article, we aim to offer a conceptual synthesis of some of the most important developments in past decades on the subject of talent in sport, while also helping sports stakeholders, particularly managers and coaches, to recognize and apply these conclusions in their practices. The article starts with a brief historical review, which explores how there has been a shift from a talent detection perspective to a talent development perspective and to a holistic vision of athletes and their background context. Secondly, the article presents an overview of the main theoretical models put forward in literature on sport psychology, including career-transition-based models and talent-and-expertise-based models. Finally, as the conceptual model most widely referred to in literature, a detailed analysis of the Development Model of Sports Participation (Côté, Baker & Abernethy, 2007), is made, especially with regard to development processes relating to standards of practice (e.g. diversification and specialization) and psychosocial influences, aspects that form the basis of all-round athlete development (AU)

Tumor odontogênico queratocístico em mandíbula: relato de caso clínico com acompanhamento de dois anos / Keratocyst odontogenic tumour in mandible: a case report with two years follow-up

O Tumor Odontogênico Queratocístico é uma lesão óssea benigna de natureza agressiva,com altas taxas de recidiva. A lesão é localizada frequentemente na região posterior do corpo e no ramo da mandibula. Radiograficamente apresenta-se com imagem radiotransparente uni ou multilocular. A tomografia computadorizada pode auxiliar no planejamento cirúrgico quando se pretende avaliar a extensão e limites anatômicos da lesão. Possui como característica histo¬lógica a presença de epitélio estratificado escamoso, na maioria dos casos paraqueratinizado. O tratamento usual é a enucleação com ou sem curetagem ou marsupialização. O objetivo deste trabalho será apresentar um caso clínico de Tumor Odontogênico Queratocístico em paciente q,Q gênero feminino de 39 anos de idade no qual foi realizado planejamento cirúrgico que consistiu em enucleação cirúrgica seguida de curetagem da loja cirúrgica. Após dois anos de acompanha¬mento clínico e radiográfico não houve recidiva da lesão.

The keratocyst odontogenic tumor is a benign intraosseous tumor, with an aggressive natu¬re and shows high recurrence rates. The lower jaw is the most commom si te of occurrence, es¬pecially in the posterior body and ramus regions. Radiographically it is radiolucency and it may be solitary or multiple. The computorized tomography provides confidence in the diagnois and dental planning. Histologically, keratocyst odontogenic tumor presents a characteristic lining of parakeratinized stratified squamous epithelium. The usual treatment includes enucleation, with or without curettage, or marsupialization. The objective of this report is to presents a case of patient which keratocyst odontogenic tumor and the treatment consisted in excisional bipsy and curettage. The clinical and radiography findings after 2years demonstrated absence of recu rrent lesion.

O que pensam os treinadores portugueses da 1ª liga sobre a importância da intervenção psicológica no futebol profissional? / What portuguese premier league coaches think about the importance of psychological intervention in professional soccer?

O rendimento desportivo resulta da interligação de aspectos físicos, técnicos, tácticos e psicológicos. Contudo, relativamente ao treino de Futebol constata-se que a componente psicológica é muito negligenciada. Neste estudo, procura-se conhecer as percepções de treinadores de alto rendimento acerca de diferentes aspectos relacionados com a dimensão psicológica, nomeadamente as concepções sobre o treino psicológico e a sua relação com o treino e o rendimento desportivo; o nível de preparação dos treinadores para treinar as competências psicológicas; e a relevância de colaborar com um especialista em psicologia do desporto. Com recurso a uma entrevista semi-estruturada, foram entrevistados quinze treinadores da Primeira Liga de Futebol Portuguesa. Uma análise indutiva das entrevistas revelou que os treinadores atribuem grande importância à componente psicológica e à colaboração com um especialista em psicologia do desporto, até porque não se sentem preparados para desenvolver um treino sistemático neste domínio.

Sport performance results from the interaction of physical, technical, tactical and psychological aspects. However, in Soccer training less attention is devoted to the psychological domain. The purpose of this study was to investigate elite Soccer coaches’ perceptions concerning different aspects of the psychological dimension, namely the conceptions about mental training and his relationship with training, in general, and performance; the coaches’ level of preparation to apply a specific psychological training; and the collaboration with a sport psychology expert. Using in-depth interviews, fifteen coaches of the Portuguese first league were interviewed. The interviews showed that the coaches attribute great significance to the psychological domain and to a possible collaboration with a sport psychology expert, as coaches seem to be unprepared to apply specific mental strategies or are unfamiliar with them.

A prática desportiva dos estudantes universitários e suas relações com as autopercepções físicas, bem-estar subjectivo e felicidade / University students' sport practice and its relations with physical self-perceptions, subjective well-being and happiness

A presente investigação analisou as relações entre a prática desportiva de estudantes universitários e o modo como estes se percepcionavam a si próprios e às suas vidas. Participaram nesta investigação 2284 estudantes de ambos os sexos, com idades entre os 18 e os 30 anos (M = 21,87 ±2,37), que preencheram um questionário sobre a sua prática desportiva, bem como versões portuguesas do Physical Self-Perception Profile (Fox & Corbin, 1989), da Subjective Happiness Scale (Lyubomirsky & Lepper, 1999), da Satisfaction With Life Scale (Diener, Emmons, Larsen, & Griffin, 1985) e da Positive and Negative Affect Schedule (Watson, Clark, & Tellegen, 1988). Em geral, a análise dos resultados revelou que os indivíduos que possuíam mais confiança física e que avaliavam a sua vida mais positivamente praticavam desporto mais regularmente; porém, verificou-se igualmente que quem se percebia menos forte fisicamente e tinha uma auto-estima mais baixa também praticava desporto mais regularmente do que os pares.(AU)

The purpose of this study was to examine the relationships between university students' sport practice and the way they perceived themselves and their lives. Participated in this investigation 2284 male and female students, with ages between 18 and 30 years (M = 21.87 ±2.37), who filled out a questionnaire to assess their levels of sport practice, as well the Portuguese versions of the Physical Self-Perception Profile (Fox & Corbin, 1989), the Subjective Happiness Scale (Lyubomirsky & Lepper, 1999), the Satisfaction With Life Scale (Diener, Emmons, Larsen, & Griffin, 1985) and the Positive and Negative Affect Schedule (Watson, Clark, & Tellegen, 1988). Overall, the analysis of the results showed that students who were more physically confident and evaluated their lives more positively did sport more regularly; however, results also showed that students who reported lower levels of physical strength and self-esteem practiced sport more regularly than their peers.(AU)

A prática desportiva dos estudantes universitários e suas relações com as autopercepções físicas, bem-estar subjectivo e felicidade / University students' sport practice and its relations with physical self-perceptions, subjective well-being and happiness

A presente investigação analisou as relações entre a prática desportiva de estudantes universitários e o modo como estes se percepcionavam a si próprios e às suas vidas. Participaram nesta investigação 2284 estudantes de ambos os sexos, com idades entre os 18 e os 30 anos (M = 21,87 ±2,37), que preencheram um questionário sobre a sua prática desportiva, bem como versões portuguesas do Physical Self-Perception Profile (Fox & Corbin, 1989), da Subjective Happiness Scale (Lyubomirsky & Lepper, 1999), da Satisfaction With Life Scale (Diener, Emmons, Larsen, & Griffin, 1985) e da Positive and Negative Affect Schedule (Watson, Clark, & Tellegen, 1988). Em geral, a análise dos resultados revelou que os indivíduos que possuíam mais confiança física e que avaliavam a sua vida mais positivamente praticavam desporto mais regularmente; porém, verificou-se igualmente que quem se percebia menos forte fisicamente e tinha uma auto-estima mais baixa também praticava desporto mais regularmente do que os pares.

The purpose of this study was to examine the relationships between university students' sport practice and the way they perceived themselves and their lives. Participated in this investigation 2284 male and female students, with ages between 18 and 30 years (M = 21.87 ±2.37), who filled out a questionnaire to assess their levels of sport practice, as well the Portuguese versions of the Physical Self-Perception Profile (Fox & Corbin, 1989), the Subjective Happiness Scale (Lyubomirsky & Lepper, 1999), the Satisfaction With Life Scale (Diener, Emmons, Larsen, & Griffin, 1985) and the Positive and Negative Affect Schedule (Watson, Clark, & Tellegen, 1988). Overall, the analysis of the results showed that students who were more physically confident and evaluated their lives more positively did sport more regularly; however, results also showed that students who reported lower levels of physical strength and self-esteem practiced sport more regularly than their peers.

Atividade antioxidante da epicatequina-(2β→7,4β→8)-epicatequina isolada de Dioclea lasiophylla

This work describes the evaluation of the antioxidant activity in the system b-carotene / linoleic acid and radical scavenging effects of the substances epicatechin-(2β→7,4β→8)-epicatechin, epicatechin, epigalocatechin-(2β→7,4β→8)-epicatechin, luteolin 3-β-Dglicopiranoside and crisoeriol 7-β-D-glicopiranoside isolated of the extract AcOEt of the stem of Dioclea lasiophylla, in comparison with the standards n-propyl gallate, BHT and a-tocopherol.