Bakgrund: Diabetes mellitus typ 2 är en sjukdom som blir allt vanligare. Personer som diagnostiserats med sjukdomen behöver bryta gamla rutiner och tillämpa livsstilsförändringar som är anpassade för sjukdomen. För att kunna genomföra dessa livsstilsförändringar krävs kunskap om diabetes mellitus typ 2. Hälso- och sjukvårdspersonalen har ett stort ansvar att ge personerna relevant och personcentrerad patientundervisning för att livsstilsförändringar ska kunna ske.Syfte: Att beskriva vad personer med diabetes mellitus typ 2 upplever främjar och hindrar livsstilsförändringar. Metod: En litteraturöversikt med kvalitativ design och ett induktivt förhållningssätt gjordes. Resultat: Det framkom att bra bemötande och personcentrerad patientundervisning av hälso- och sjukvårdspersonal genererade god självhantering och motivation till livsstilsförändringar hos personerna med diabetes mellitus typ 2. Bristande kunskap om sjukdomen på grund av otillfredsställande patientundervisning ledde till osäkerhet om behandlingen, och oro över att göra fel hindrade personerna att utföra livsstilsförändringar. Slutsats: En personcentrerad patientundervisning är nyckeln till goda livsstilsförändringar för personer med diabetes mellitus typ 2. När personerna får individanpassad undervisning genererar det god kunskap om sjukdomen som förbättrar personernas genomförande av livsstilsförändringar. / Background: Type 2 diabetes mellitus is an increasingly common disease. People diagnosed with type 2 diabetes mellitus need to break old routines and apply lifestyle changes that are appropriate for the disease. To be able to implement these lifestyle changes, knowledge of type 2 diabetes mellitus is required. The healthcare staff have a huge responsibility to give the persons relevant and person-centred patient education, so that lifestyle changes can take place. Purpose: to describe what people with diabetes mellitus type 2 experience promote and prevent lifestyle changes.Method: A literature review with qualitative design and an inductive approach was made. Result: It emerged that a good encounter and person-centred patient education of healthcare professionals generated good self-management and motivation for lifestyle changes in the persons with type 2 diabetes mellitus. Lack of knowledge about the disease due to unsatisfactory patient education led to uncertainty about the treatment, and concerns about wrongdoing prevented people from lifestyle changes. Conclusion: A person-centred patient education is the key to good lifestyle changes for people with type 2 diabetes mellitus. When the individuals receive individualized education, it generates good knowledge of the disease that improves the self-management and performance of lifestyle changes.

This thesis deals with the healthy lifestyle of parents of children with disabilities. The aim of the work, which is divided into four parts, is to analyze specifically set thematic parts related to the lives of families of children with disabilities and to create a relatively comprehensive synthesis mapping and reflecting on the given issue programmatically from various perspectives. The thesis also points out neglected connections in the life of parents of children with disabilities and stereotypes and prejudices of society.

Introdução: Comportamentos alimentares inadequados, inatividade física e maior tempo despendido na frente da televisão e/ou computadores são frequentes entre adolescentes e aumentam o risco para o ganho de peso. Destaca-se a importância em abordar adolescentes com estratégias de intervenção para a promoção da saúde. Objetivo: avaliar o efeito da intervenção sobre o estado nutricional, ingestão dietética, atividade física e comportamentos sedentários de lazer. Métodos: É um ensaio comunitário randomizado controlado com adolescentes do sexo feminino, matriculadas em 10 escolas técnicas públicas da cidade de São Paulo. O estudo está registrado na plataforma ClinicalTrials.gov e segue o checklist do CONSORT. A intervenção foi adaptada do estudo NEAT Girls em referência a Teoria Social Cognitiva e teve duração de seis meses. Foram avaliados o peso, a estatura e a circunferência da cintura, índice de massa corporal (IMC) e IMC z-score. O consumo alimentar foi avaliado com o questionário de frequência alimentar validado. A atividade física pelo questionário que avalia os três níveis de atividade física de lazer e os comportamentos sedentários de lazer por um questionário auto-relatado. Foi realizada estatística descritiva dos dados, os testes do qui-quadrado, t-student independe e o modelo linear misto para as análises dos dados com nível alpha de significância de 5 por cento . Todas as analises seguiram o princípio de intenção-tratamento. Resultados: Participaram 253 adolescentes (16.05 [EP 0.05] anos), 142 no grupo intervenção e 111 no grupo controle. Após os seis meses da intervenção, houve diferenças estatisticamente significantes a favor do grupo intervenção para o indicador da circunferência da cintura (-1.09cm; [0.51], p=0.027); consumo do grupo das frutas (0.23porção [0.11], p=0.006), das verduras e legumes (1.15porção [0.55], p=0.005) e dos açúcares e doces (-0.67porção [0.35], p=0.0.036); tempo despendido na frente dos computadores durante a semana (-0.39horas [0.21], p=0.039) e aos finais de semana (-0.54horas [0.22], p=0.030) e a soma de todas as atividades de tela durante o final de semana (-0.79horas [0.32], p=0.007). As diferenças proporcionais entre os níveis de atividade física leve (x2=20.95 p=0.007) e vigorosa (x2=8.09, p=0.017) favoreceram as meninas da intervenção. No geral, as meninas ficaram satisfeitas com o programa e o workshop de nutrição foi o componente que elas mais gostaram. Conclusão: O Hábitos Saudáveis, Meninas Saudáveis Brasil apresentou melhoria para o indicador circunferência da cintura, no consumo das frutas, verduras e legumes, dos doces, tempo despendido na frente dos computadores e na atividade física. / Introduction: Inadequate eating behaviors, physical inactivity and increase time spent on TV and computers are often among adolescents and increase the risk for weight gain. It highlights the importance to target adolescent in intervention strategies to promote health. Objective: evaluate the intervention effect on the nutritional status, dietary intake, physical activity and leisure sedentary behaviors. Methods: It is a group randomized controlled trial with female adolescents attending 10 public schools from São Paulo. The study is registered in ClinicalTrials.gov and follows the CONSORT checklist. The intervention was adapted from the NEAT Girls study in reference of the Social Cognitive Theory with 6 months duration. It was accessed weight, height, waist circumference, body mass index and body mass index Z-score. The food consumption was evaluated using a food frequency validated questionnaire. Physical activity was evaluated by a questionnaire that assesses the three levels of leisure-time physical activity and leisure sedentary behaviors using a self-reported questionnaire. Descriptive statistics, chi-squared, student-t and linear mixed models were used to analyze the data with a level of significance of 5 per cent . All analyses followed intention-to-treat principles. Results: Participated 254 adolescents (16.05 [EP 0.05] years), 142 and 111 from intervention and control groups, respectively. After six-month intervention, significant findings favoring intervention group were found for the waist circumference indicator (- 1.09cm; [0.51], p=0.027), fruits (0.23serving [0.11], p=0.006), vegetables (1.15serving [0.55], p=0.005), sweets (-0.67serving [0.35], p=0.0.036), time spent on computers during the weekdays (-0.39hours [0.21], p=0.039) and weekends (-0.54hours [0.22], p=0.030) and sum of the screen activities on the weekends (-0.79hours [0.32], p=0.007). Proportional differences in light (x2=20.95 p=0.007) and vigorous (x2=8.09, p=0.017) physical activity significantly favored the interventions girls. In general, girls were satisfied with the program and the nutrition workshop was the component most enjoyable. Conclusion: The Healthy Habits, Healthy Girls Brazil demonstrated an improvement on waist circumference indicator, fruit and vegetables, sweets, time spent on computers and physical activity levels.

The volume of information in the Internet is growing exponentially. The ability to find intelligible information among vast amounts of data is transforming the human vision of the universe and everything within it. The underlying question then becomes which methods or techniques can be applied to transform the raw data into something intelligible, active and personal? This question is explored in this document by investigating techniques that improve intelligence for systems in order to make them perceptive/active to the recent information shared by each individual. Consequently, the main objective of this thesis is to enhance the experience of the user (individual) by providing a broad perspective about an event, which could result in improved ideas and better decisions. Therefore, three different data sources (individual data, sensor data, web data) have been investigated. This thesis includes research into techniques that process, interpret and reduce these data. By aggregating these techniques into a platform it is possible to deliver personalised information to applications and services. The contribution of this thesis is twofold. First, it presents a novel process that has shifted its focus from IoT technology to the user (or smart citizen). Second, this research shows that huge volumes of data can be reduced if the underlying sensor signal has adequate spectral properties to be filtered and good results can be obtained when employing a filtered sensor signal in applications. By investigating these areas it is possible to contribute to this new interconnected society by offering socially aware applications and services. / Sem resumo

Accommodation is the change in the dioptric power of the eye altering the focus from distance to near. Presbyopia is the loss of accommodative function that occurs with age. There are many techniques used to measure accommodation, however, there is little consensus as to how clinical data should be collected and analysed. The overarching theme of this thesis is the in vivo examination of accommodation and how lifestyle can affect the onset of presbyopia. An open-field autorefractor with badal adaption was used to examine accommodative dynamic profiles under varying demands of vergence. From this data a new metric for assessing the time for accommodative change was derived. Furthermore this thesis describes a bespoke automated accommodative facility instrument that was developed to provide further assessment of accommodative speeds. Defocus curves are used for assessing accommodation and depth-of-focus; the work presented explores the use of non-linear regression models to define the most appropriate method of assessing defocus curves in phakic subjects, and pseudophakic subjects implanted with an extended depth-of-focus intraocular lens. Using an absolute cut-off criteria of +0.30logMAR improved the repeatability and reliability of the depth-of-focus metrics over a cut-off criteria relative to the best corrected visual acuity. A swept-source anterior segment optical coherence tomographer (AS-OCT) was used to image the morphology of the ciliary muscle during accommodation. The accuracy of ciliary muscle measurements was improved when using reference points on the sclera to align the AS-OCT scan. The use of a ciliary muscle area metric demonstrated poor repeatability and reliability when compared to the traditional assessment of muscle morphology via thickness measurements. Physiological ageing in the crystalline lens occurs in line with ageing in other structures in the body. The methods for assessing accommodative function examined in previous chapters, were used to examine whether lifestyle factors which affect the rate of systemic ageing, such as smoking, also affect accommodative function. Although being a current smoker and having greater central adiposity was associated with a slower time for accommodative change, further research is required before these findings can be applied to the target population.

Made available in DSpace on 2016-04-04T18:28:04Z (GMT). No. of bitstreams: 1 Greici Maestri Bussoletto.pdf: 2207825 bytes, checksum: e9d557a268bf04641cc3e03659a689ec (MD5) Previous issue date: 2012-02-24 / Pontif?cia Universidade Cat?lica de Campinas / Given the high rates of mortality from cardiovascular disease, it is necessary to promote of prevention and rehabilitation addressing physical and emotional aspects. This study sought assessing with patients after acute myocardial infarction (AMI), whether there was any change in lifestyle and incidence of stress with the passage of time on three different occasions: on admission, after three months and after six months .The sample consisted of 31 participants, 26 men and five women, aged between 40 and 82 years old admitted to the Hospital of UNICAMP. To collect data was used semi-structured interviews and the Inventory of Stress Symptoms for Adults Lipp (ISSL). For quantitative data analysis was used for statistical and qualitative data content analysis along the lines of Bardin.The results showed the prevalence of overweight patients (n = 14), with hypertension (n = 23), previous myocardial infarction in their medical history (n = 19) and the presence of family history of hypertension (n = 19), diabetes mellitus (n = 16), myocardial infarction (n = 20), stroke (n = 17) and sudden death (n = 13). Looking at the habits of life through the passage of time, it was found significant change for better between the assessments regarding: physical activity (p = 0,022), quitting smoking (p = 0,001), and the type of food elected (p <0,01). Moreover, it was noted that the resumption of activities after the event was impaired (p = 0,012). In relation to stress, 100% of the sample had with significant symptoms of stress in the first evaluation, 96.43% in the second one and 89.29% in the third one. In phase three evaluations of the stress resistance was more prevalent. Physical symptoms were more prevalent in the first evaluation (n = 16), in the second and the third one, the psychological symptoms were the most prevalent (n = 12) and (n = 13) respectively. The results showed that the way the patients relate to the team and with its treatment, as well with as the changes resulting from AMI can positively or negatively influence adherence to the treatment. / Diante das altas taxas de mortalidade por doen?as cardiovasculares, ? necess?rio que se promovam trabalhos de preven??o e reabilita??o que abordem aspectos f?sicos e emocionais. Buscou-se nesse estudo compreender a ades?o do paciente coronariopata ao tratamento p?s-infarto avaliando poss?veis mudan?as nos h?bitos de vida e na incid?ncia de stress na passagem do tempo em tr?s momentos: na interna??o, tr?s e seis meses ap?s o evento. A amostra contou com 31 participantes, sendo 26 homens e cinco mulheres; com idade entre 40 a 82 anos internados no hospital das cl?nicas da UNICAMP. Na coleta dos dados foram utilizados um roteiro de entrevista semiestruturada e o Invent?rio de Sintomas de Stress para Adultos de Lipp (ISSL). Para os dados quantitativos foi utilizada a an?lise estat?stica e para os dados qualitativos a an?lise de conte?do segundo os moldes de Bardin. Os resultados apontaram uma preval?ncia de pacientes com sobrepeso (n=14), com hipertens?o arterial instalada (n=23), com IAM pr?vios em seu hist?rico m?dico (n=19) e com a presen?a de antecedentes familiares de hipertens?o arterial (n=19), de diabetes mellitus (n=16), de IAM (n=20), de acidente vascular cerebral (n=17) e de morte s?bita (n=13), considerados fatores de risco no desencadear de doen?as cardiovasculares. Analisando os h?bitos de vida, constatou-se que houveram mudan?as significativas, para melhor, em rela??o a: realiza??o de atividade f?sica (p=0,022); ao ato de parar de fumar (p=0,001); e ao tipo de alimenta??o consumida (p<0,001). A retomada de atividades ap?s o IAM ficou prejudicada (p=0,012). Em rela??o ao stress, 100% da amostra apresentava sintomas significativos na primeira avalia??o, 96,43% na segunda e 89,29% na terceira. Nas tr?s avalia??es a fase do stress mais prevalente foi da resist?ncia. Os sintomas f?sicos prevaleceram na primeira avalia??o (n=16), na segunda (n=12) e terceira (n=13), prevaleceram os psicol?gicos. Os resultados demonstraram que a forma como o paciente se relaciona com a equipe, com o seu tratamento e com as mudan?as decorrentes do infarto, podem influenciar positiva ou negativamente na ades?o ao tratamento.

Introdução: Doenças cardiometabólicas são problemas de saúde pública mundial com repercussões sociais e econômicas. Dieta inadequada é apontada como um dos principais fatores de risco modificáveis, de importância central na prevenção destas doenças. Apesar da constatação de que certos nutrientes se associam a doenças, ainda existem dúvidas quanto às relações causais. Objetivos: 1) Revisar a participação dos alimentos e nutrientes na gênese e controle de doenças crônicas não-transmissíveis integrantes da síndrome metabólica (manuscrito 1); 2) Descrever de forma detalhada a estrutura do programa de intervenção interdisciplinar em hábitos de vida, desenvolvido para usuários da rede pública de saúde do município de São Paulo (manuscrito 2); 3) Investigar o efeito de mudanças em fatores dietéticos sobre o metabolismo glicídico, decorrentes de intervenção em hábitos de vida em indivíduos de risco cardiometabólico da rede pública de saúde (manuscrito 3). Métodos: Foram incluídos adultos com diagnóstico de pré-diabetes ou síndrome metabólica sem diabetes em ensaio clínico aleatorizado envolvendo dois tipos de intervenções de 18 meses: tradicional e intensiva. A intervenção tradicional consistiu de consultas trimestrais com endocrinologista; na intensiva, além dos atendimentos médicos, os indivíduos participaram de sessões psicoeducativas em grupo com equipe multiprofissional. As orientações dietéticas visaram à adequação do consumo de gorduras totais (redução de saturadas e trans e elevação de insaturadas) e aumento na ingestão de fibras. As variáveis coletadas nos momentos pré- e pós-intervenção incluíram dados sócio-demográficos, antropométricos, dietéticos e bioquímicos (glicemia de jejum e póssobrecarga, perfil lipídico, insulina, adiponectina, proteína C reativa, IL-6, TNF-, apolipoproteína A1 e B). A dieta foi avaliada por recordatórios de 24 horas, processados pelo Nutrition Data System software. Foram empregados os testes: t de Student, coeficientes de correlações, ANOVA com p de tendência e análises de regressão múltipla para identificar fatores dietéticos associados à melhora do metabolismo glicídico. Resultados: O manuscrito 1 consiste de um capítulo de livro (Nutrição em Saúde Coletiva) abordando aspectos epidemiológicos de doenças do espectro da síndrome metabólica com ênfase em fatores alimentares e estado nutricional. O manuscrito 2 detalha a estrutura, a equipe integrante, as orientações preconizadas e as principais estratégias psicoeducativas utilizadas no programa de intervenção em hábitos de vida desenvolvido (artigo metodológico submetido e website). Análises do manuscrito 3 mostraram que, ao final da intervenção, o aumento na ingestão de ácidos graxos monoinsaturados e fibras solúveis associaramse de forma independente à redução da glicemia de jejum e os primeiros também à melhora da glicemia pós-sobrecarga. Ajustes por medidas antropométricas não alteraram os resultados, o que ocorreu, porém, após inclusão da variável mudança na insulina nos modelos (artigo original). Conclusão: Justifica-se divulgar programas de intervenção como o aqui desenvolvido considerando-se o atual cenário das doenças cardiometabólicas na atualidade. No presente estudo, o aumento na ingestão de ácidos graxos monoinsaturados e de fibras solúveis promoveu benefícios no metabolismo glicídico, independente da adiposidade, ao final da intervenção no estilo de vida. Possíveis mecanismos mediadores destes processos podem incluir principalmente a melhora da sensibilidade à insulina. Dessa forma, nossos achados sugerem fortemente que um aumento factível no consumo destes nutrientes deva ser estimulado como estratégia para a proteção do metabolismo glicídico em indivíduos de risco cardiometabólico / Introduction: Cardiometabolic diseases are global public health problems with social and economic repercussions. Unhealthy diet is seen as one of the main modifiable risk factors, being of central importance for the prevention of these diseases. Despite the evidence that certain nutrients are associated with diseases, causal relationships are still under discussion. Objectives: 1) To review the involvement of foods and nutrients in the genesis and control of non-communicable chronic diseases, that comprise the metabolic syndrome (manuscript 1); 2) To describe in detail the structure of the interdisciplinary intervention program on lifestyle, developed for costumers of public health system of Sao Paulo city (manuscript 2); 3) To investigate the impact of changes in dietary factors on glucose metabolism, induced by a lifestyle intervention in individuals at cardiometabolic risk attended by the public health system (manuscript 3). Methods: Adults with prediabetes or metabolic syndrome without diabetes were included in a randomized clinical trial involving two types of 18-month interventions: a traditional or an intensive one. The traditional intervention consisted of quarterly consultations with an endocrinologist, while in the intensive participants also attended psychoeducational group sessions with a multidisciplinary team, in addition to the medical visits. The dietary recommendations aimed at the adequate intake of fat (reduction of saturated and trans and increase of unsaturated fatty acids) and increase in fiber intake. Socio-demographic, anthropometric, dietary and biochemical (fasting and post-load plasma glucose, lipid profile, insulin, adiponectin, C-reactive protein, IL-6, TNF-, apolipoprotein A1 and B) data were collected at baseline and after 18-month of follow-up. Diet was assessed by 24-h dietary recalls, processed by Nutrition Data System software. Student t test, correlation coefficients, ANOVA with p for trend and multiple linear regressions analyses were employed to identify dietary factors associated with glucose metabolism improvement. Results: Manuscript 1 consists of a book chapter (Nutrition in Public Health) about epidemiological aspects of diseases of the spectrum of metabolic syndrome with emphasis on dietary factors and nutritional status. Manuscript 2 details the structure, professional team, recommendations and the main psychoeducative strategies used in the lifestyle intervention program developed (methodological article submitted and website). Analyses of manuscript 3 showed that the intervention-induced increase in monounsaturated fatty acids and soluble fiber intake were independently associated with reduction on fasting plasma glucose and the former also with 2h-plasma glucose improvement. Adjustment for anthropometric measurements did not change these results but did after including change in insulin in the models (original article). Conclusion: Intervention programs such as the developed herein should be reported taking into consideration the current scenario of cardiometabolic diseases. In the present study, increases in monounsaturated fatty acids and soluble fiber intake promoted benefits in glucose metabolism, independent of adiposity, at the end of the lifestyle intervention. Possible mechanisms mediating these processes may mainly include improvement in insulin sensitivity. Therefore, our findings strongly suggest that a feasible increase in consumption of these nutrients should be encouraged as a strategy for the protection of glucose metabolism in individuals at cardiometabolic risk

O objetivo deste estudo foi investigar os efeitos de dois programas de exercício físico na composição corporal de adolescentes obesos submetidos ao tratamento multidisciplinar e verificar qual programa de exercício físico foi mais eficaz para reduzir a gordura corporal e aumentar a massa magra nos dois gêneros. Foram selecionados 60 adolescentes obesos, sendo 36 do gênero feminino e 20 do gênero masculino, com índice de massa corporal (IMC) igual ou acima do percentil 95, na faixa etária de 15 a 19 anos. A amostra foi dividida em dois grupos: grupo aeróbio e grupo força. Os adolescentes foram submetidos a avaliação antropométrica, clínica, de composição corporal e da aptidão física. Além disso, receberam orientação para mudança no estilo de vida e consultas nutricional, psicológica e médica. As sessões de exercícios físicos ocorriam três vezes por semana, em dias alternados, com duração de 60 minutos. A composição corporal foi avaliada pela absortometria de duplo feixe de energia (DEXA) nos momentos inicial e final do estudo. A duração da intervenção foi de 12 semanas. Os principais resultados demonstraram que os grupos aeróbio e força apresentaram redução significante na massa corporal e no IMC e, quando analisados por gênero, verificou-se que no gênero feminino não houve diferença significante, enquanto que o gênero masculino apresentou redução significante no grupo força. Na massa magra observou-se aumento significante apenas no grupo força, tanto sem distinção de gênero quanto diferenciando por gênero. Os dois grupos apresentaram redução significante na massa de gordura, no percentual de gordura corporal total e no percentual de gordura de tronco tanto sem distinção de gênero quanto diferenciando por gênero. Verificou-se correlação positiva na redução do percentual de gordura de tronco com o percentual de gordura periférica. Concluiu-se que o treinamento de força foi mais efetivo para aumentar a massa magra e, levando em consideração a maior redução na variação percentual entre os momentos inicial e final, o grupo aeróbio foi mais efetivo para reduzir a massa de gordura e o grupo força para reduzir o percentual de gordura corporal total dos adolescentes obesos submetidos ao tratamento multidisciplinar de doze semanas. / The objective of this study was to investigate the effects of two physical exercises programs applied to obese adolescents submitted to multidisciplinary treatment in order to establish which program is more effective to reduce body fat and increase lean mass in both gender. 60 obese adolescents aged between 15 and 19 years were selected, comprising 36 girls and 20 boys with body mass index (BMI) equal to or above the 95th percentile. The sample was divided into two groups: aerobic and strength. The adolescents were submitted to anthropometric, clinical, body composition and physical fitness evaluation. In addition, they were oriented to change their lifestyle and received nutritional, psychological and medical assistance. 60 minute physical exercise sessions occurred three times a week on alternate days. Body composition was evaluated by dual-energy X-ray absorptiometry (DEXA) twice: at the beginning and at the end of the program. The program lasted for 12 weeks. The main results show that both aerobic and the strength groups had significant reduction of body weight and of the BMI, and when analyzed by gender, no significant difference was observed among girls of both groups, while boys of the strength groups had a significant reduction. Lean mass increased significantly in the strength group only. Participants of both physical training groups had significant reduction of their fat mass, percentage of total body fat and percentage of trunk fat. A positive correlation was established between the reduction in the percentage of trunk fat and the percentage of peripheral fat. In conclusion, strength training was more effective to increase lean mass. Considering the greater reduction in the percentage variation between the beginning and the end of the period, aerobic training was more effective to reduce the fat mass while strength training was more effective to reduce the percentage of total body fat of obese adolescents submitted to multidisciplinary treatment during twelve weeks.

Este estudo versa sobre os negros das camadas médias paulistanas. Analisa a identidade de classe a partir da autoclassificação e do modo como o conceito de classes sociais é construído pelos interlocutores. A intenção é instituir uma analogia com as categorias elaboradas pelos cientistas sociais. Examina o estilo de vida, utilizando como referência o consumo material e simbólico. Desta forma, busca a especificidade do grupo em relação a gostos e preferências. Problematiza a questão da identidade racial a começar pela auto-identificação quanto à raça e classe, além de analisar quais são os fatores utilizados como referência para a construção da idéia de pertencimento étnico. Investiga as representações sociais dos negros de classe média, isto é, busca compreender como estes percebem a sociedade, a imagem que fazem de si mesmos e como julgam ser avaliados pela sociedade global. / This study is about São Paulos black middle class population. It seeks to analyse class identity from the subjects point of view: focusing, in the one hand, on the way in which the subjects classify themselves and, on the other, on how the class concept is formulated by them, drawing an analogy between this concept and those conceived by social scientists. In order to realise this aim, this study examines the blacks lifestyle, using their material and symbolic consumption as a reference. Along with this analysis, the study also questions the racial identity, as experimented by the subjects, considering both the subjects racial and social self classification and the factors used as a reference to the idea of being part of an ethnic group. This study investigates the black middle class social representation, that is to say, it seeks to understand how this population perceive their society, what is the image the blacks have of themselves and, according to their opinion, which is the opinion the encompassing society have upon them.

During the year of 2017 and 2018, the online magazine Teen Vogue saw an immense rise in reader statistic after laying all efforts on digital channels and increasing content about social issues to attract audiences of young people. Teen Vogue is a form of lifestyle journalism. This type of journalism is known for providing popular journalism, infotainment and human-interest stories with close ties to commercial interests. The target audience of Teen Vogue are adolescents or youth, which has for a long time been a group that often shows resistance and calls out for change. But, what happens when a magazine with close connection to commercial interests also aims to attracting a more socially conscious group? This research explores the connection between lifestyle media, consumption and social issues through a mixed method study of the articles in Teen Vogue. The first part of this research consists of a content analysis which identifies the main social issues within the content categories of the magazine and established the close connection between commercial issues and activism in the content. The second part of the study involves a critical discourse analysis which analyzes how language is used and how discourses of consumption interplay in the material. It was found that discourses of consumption as a means to extend one’s identity was intertwined with consumption as ethical or responsible, highlighting that being an activist is mainly a matter of consumption.