Markus Vinícius Nahas

Federal University of Santa Catarina | UFSC · Departament of Physical Education

Os objetivos do estudo foram estimar o nível de confiabilidade e validade fatorial da escala “Perfil do Estilo de Vida Individual” em tempos de distanciamento social, por meio da análise fatorial confirmatória (AFC). Para tanto, a escala “Perfil do Estilo de Vida Individual” em tempos de distanciamento social foi empregada em um estudo realizado co...

Este estudo teve como objetivo estimar a validade de conteúdo e o nível de reprodutibilidade da escala “Perfil do Estilo de Vida Individual” em tempos de distanciamento social. Os itens da escala original proposta por Nahas, Barros e Francalacci, foram modificados para avaliar o estilo de vida de adultos, de forma online, durante o período distanci...

The level of physical activity of adolescents has been a concern for public health agencies, suggesting the maximum use of the physical activities available in daily life. This study aimed to compare the prevalence of passive commuting to school and analyze the sociodemographic factors associated with adolescents from two Brazilian cities. The part...

Introduction Although the benefits of regular physical activity (PA) for adolescents are well-described in the literature, there is little evidence of the role of psychosocial aspects on levels of PA in this population. Objective To investigate the prevalence and sociodemographic factors associated with enjoyment of PA and preference for leisure-t...

Os objetivos do estudo foram analisar os fatores sociodemográficos e psicossociais associados à prática de atividade física no tempo de lazer (AFTL), e testar a interação entre o gosto e a preferência por atividade física (AF) sobre a prática de AFTL, de acordo com o sexo. Trata-se de um estudo transversal (projeto CompAC 2011) e representativo dos...

Os objetivos do estudo foram analisar os fatores sociodemográficos e psicossociais associados à prática de atividade física no tempo de lazer (AFTL), e testar a interação entre o gosto e a preferência por atividade física (AF) sobre a prática de AFTL, de acordo com o sexo. Trata-se de um estudo transversal (projeto CompAC 2011) e representativo dos...

Background/objectives: An in-depth understanding of the relationship between food consumption and physical activity is relevant since these behaviours could influence each other, while both have an effect on obesity and chronic diseases. In this context, the aim of this study was to investigate the effect of various combinations of food consumptio...

Resumo Compreender mudanças no consumo de frutas e verduras por adolescentes é importante para criação de ações de saúde pública. O objetivo deste artigo é investigar mudanças, em dez anos, no consumo diário de frutas e verduras por adolescentes, de acordo com sexo, idade e área de moradia. Estudo de painel (análise secundária) da pesquisa "Estilo...

Objective: To determine the prevalence of smoking, as well as its association with sociodemographic factors, alcohol consumption, and stress levels, among industrial workers in Brazil. Methods: This was a nationwide survey, conducted in 24 capitals in Brazil through the application of a pre-tested questionnaire. The response to the question “What...

The aim of this study was to verify if the practice of physical activity in the preschool age (3-5 years) is predictive of this behavior after entering the school age (5-7 years).A longitudinal, school-based study with 700 children enrolled in public and private schools of the city of Recife, Pernambuco, who were evaluated in 2010 and followed in 2...

RESUMO Introdução: Compreender mudanças no consumo de frutas e verduras por adolescentes é importante para criação de ações de saúde pública. Objetivo: Investigar mudanças, em dez anos, no consumo diário de frutas e verduras por adolescentes, de acordo com sexo, idade e área de moradia. Métodos: Estudo de painel (análise secundária) da pesquisa "Es...

Loneliness is an individual and social problem associated with an unhealthy lifestyle among adolescents. We examined the association between loneliness, physical activity, and participation in physical education lessons among school-going adolescents. Participants included 2517 adolescents aged 14-19 years selected from state public high schools in...

The preference for a specic activity during leisure time can directly influence its practice, both for active and sedentary behaviors. Thus, the purpose of this study was to identify changes after a decade in the preference for leisure activities according to gender and age group between two generations of adolescents from southern Brazil. It was a...

Aims: Investigated the relation between eating habits or physical activity and weekend television viewing time, regardless of weekday television viewing in Brazilian workers. Methods: A representative cross-sectional study was conducted to measure the relation between weekend television viewing time and dietary indicators and physical activity acr...

An unhealthy body composition has been linked with chronic diseases and premature deaths that could be prevented. It is desirable to understand how modifiable behaviors are linked to the body composition of industrial workers, and identify risk groups among the population to plan interventions and policies. The aim of the study was to identify the...

O presente estudo tem por objetivo estimar as prevalências dos tipos e das quantidades de atividades físicas (AF) realizadas no tempo de lazer por adolescentes, de acordo com sexo e idade. Participaram do estudo 6.529 estudantes (15-19 anos de idade) do ensino médio de escolas estaduais de Santa Catarina. Analisou-se a questão referente aos tipos d...

This study aimed to investigate whether attitudes towards body weight dissatisfaction is associated with perceived health and impairments in sleep among a national population-based sample of Brazilian adolescents. This is a cross-sectional datathe 2015 National School-Based Health Survey (PeNSE). A total of 100.182 students (70.8% were between 14 t...

Prevalence and the factors associated with adolescents’ negative self-perception of health in the Northern region of Brazil

Introdução: O sono é uma necessidade fisiológica que, entre suas funções, busca restaurar as condições física e psicológica do organismo desgastadas durante o estado de vigília. Um sono de boa qualidade está diretamente ligado ao desenvolvimento saudável, especialmente dos adolescentes. Objetivo: O objetivo deste estudo foi analisar as associações...

The aims were to examine changes in the prevalence of overweight and obesity among students from 2001 to 2011, and to verify if these changes differ according to age group, area of residence, and family income. We analyzed two cross-sectional surveys conducted in 2001 and 2011 with brazilian adolescents. Sociodemographic and anthropometric characte...

RESUMO Introdução: Compreender mudanças no consumo de frutas e verduras por adolescentes é importante para criação de ações de saúde pública. Objetivo: Investigar mudanças, em dez anos, no consumo diário de frutas e verduras por adolescentes, de acordo com sexo, idade e área de moradia. Métodos: Estudo de painel (análise secundária) da pesquisa...

Objective Investigate the clustering of four unhealthy food habits (low intake of fruits, low intake of vegetables, high intake of candy, and high intake of fried snacks), and to identify the association between the number of these clustered habits and sociodemographic variables. Methods This was a cross-sectional representative study of industria...

DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n4p493 The aim of this study was to estimate the prevalence of stages of behavior change (SBC) for physical activity and to verify the associated demographic and economic factors, in adolescents from the Amazon. A total of 2,517 adolescents (aged 14-19 years) from public high schools participated of t...

Objective: To analyze the association between perceived stress in adolescence, body weight and romantic relationships. Methods: Participants were 2,571 adolescents (56.1% female), with mean age of 16.6±1.2 years, who were students of public schools in Amazonas. The adolescents answered a questionnaire with sociodemographic questions (sex, age gr...

The aim of this study was to estimate the prevalence of stages of behavior change (SBC) for physical activity and to verify the associated demographic and economic factors, in adolescents from the Amazon. A total of 2.517 adolescents (aged 14-19 years) from public high schools participated of the study. SBC for physical activity, demographic (sex,...

Este estudo teve como objetivo analisar os fatores associados à baixa duração do sono em adolescentes amazonenses. Trata-se de um estudo epidemiológico transversal conduzido em 2.517 adolescentes (1.106 do sexo masculino e 1.411 do sexo feminino) com idades de 14 a 19 anos, matriculados em escolas públicas de ensino médio no estado do Amazonas. Alé...

O objetivo deste estudo foi analisar a concordância entre dois critérios de classificação da atividade física (AF) e os respectivos fatores associados. Os participantes foram 2.517 adolescentes amazonenses (14 a 19 anos de idade). O nível de AF e as variáveis independentes (sexo, faixa etária, ano escolar, turno de estudo, renda familiar, escolarid...

The purpose of this study was to estimate self-perception of well-being and associated factors among industrial workers in Brazil. A cross-sectional survey was carried out with a representative sample from 23 Brazilian states and the Federal District. Self-reported of well-being was investigated by questionnaire. Multinomial logistic regression was...

PurposeThis study aimed to estimate the prevalence of cycling for commuting and for leisure among Brazilian workers, and analysis possible differences in sociodemographic characteristics between the cycling in commuting and leisure. Methods It was performed a secondary analysis of the survey "Lifestyle and leisure habits of industry workers" (n = 4...

Background: Perception school climate has been investigated for contributing to health promotion policies and education in the school environment. In low- and middle-incomes countries, tracking information with respect to these perceptions are still scarce. Objectives: To analyze the changes in the perception of adolescents on the school climate du...

Obesity is a public health problem that has been growing, especially in developing countries. It is associated with genetic factors as well as with cultural factors, overeating, and leading a sedentary lifestyle. The aim of this study was to compare sedentary behaviors and levels of physical activity, based on gender, among high school teenagers st...

Objective Verify the prevalence and sociodemographic and economic factors associated with behavior change stages for habitual physical activity practice in adolescents from Santa Catarina. Methods Secondary analysis of a study on the Behavior of Adolescents from Santa Catarina (CompAC 2). Cross-sectional school-based study of 6,529 high-school stu...

Objetive: To identify the prevalence of walking for leisure and for commuting to work and its association with sociodemographic factors among 47,477 Brazilian workers. Walking and sociodemographic factors were obtained from a self-reported questionnaire. Poisson regression was used. Among men, walking for leisure was more frequent in those who were...

Objective: To investigate the consequences of including active commuting, compared with the leisure domain only, in the prevalence and sociodemographic factors associated with attending the physical activity recommendations, in Brazilian adults. Study design: Population-based cross-sectional study. Method: Adults between 20 and 59 years of age...

Objective: Verify the prevalence and sociodemographic and economic factors associated with behavior change stages for habitual physical activity practice in adolescents from Santa Catarina. Methods: Secondary analysis of a study on the Behavior of Adolescents from Santa Catarina (CompAC 2). Cross-sectional school-based study of 6,529 high-school...

The practice of team sports such as soccer and volleyball, are one of the main activities practiced by college. The objectives of the study were to compare the proportions of practice team sports in the years 2010, 2012 and 2014 in college and to analyze the association between participation in the classes of Physical Education, before entering uni...

The aim of the study was to investigate the association of the physical activity domains and types of physical activity practiced during leisure time with the occurrence of stress in workers. This is a cross-sectional survey, conducted from 2006 to 2008, with a representative sample of industrial workers (n = 47, 477; 69% men). Data were collected...

This study aimed to estimate the prevalence of the main perceived barriers to leisure-time physical activity (LTPA) and their associations with the frequency of LTPA in a representative sample of industrial workers from Brazil (n = 47 477), according to their income strata (low income: ≤$US280, middle income: $US281-$US1400, and high income: ≥$US14...

Methods: Secondary analysis of the survey "Lifestyle and leisure habits of industry workers" (n=46,981), conducted in 24 Brazilian states (2006-2008). Self-reported information was collected with a previously tested questionnaire. Crude and adjusted logistic regression models were applied to analyze the association between sociodemographic variabl...

O objetivo do estudo foi identificar interação entre gênero e escolaridade na ocorrência de inatividade física em diferentes domínios (deslocamento, domicílio, lazer e trabalho) em adultos de Florianópolis, Santa Catarina. Os dados foram coletados de setembro/2009 a janeiro/2010 com indivíduos de 20 a 59 anos. Empregou-se um delineamento transversa...

Objetivo A satisfação com a vida é um julgamento cognitivo de alguns domínios específicos na vida e depende de uma comparação entre as circunstâncias de vida do indivíduo e um padrão por ele estabelecido. O objetivo deste estudo foi construir uma escala de satisfação com a vida por meio da Teoria da Resposta ao Item (TRI). Métodos Para a criação d...

Background: Physical inactivity in each domain (leisure, work, commuting, and household) is not completely independent. This study aimed to describe the clustering of physical inactivity in different domains and its association with sociodemographic factors among Brazilian industrial workers. Methods: This was a cross-sectional, population-based...

Inadequate sleep has been associated with unhealthy behavior in adolescence. This study aimed to estimate the prevalence of negative sleep indicators (perceived poor-quality sleep and insufficient sleep duration) among students and to identify unhealthy behaviors associated with this outcome. This study is part of a school-based, cross-sectional su...

O objetivo foi investigar a associação entre aspectos sociodemográficos e três comportamentos sedentários em trabalhadores da indústria no Brasil. Analisaram-se dados de 47.477 trabalhadores das indústrias de 24 Unidades Federativas, coletados por questionário de 2006 a 2008. Analisou-se a presença individual e simultânea de assistência à televisão...

Inadequate sleep has been associated with unhealthy behavior in adolescence. This study aimed to estimate the prevalence of negative sleep indicators (perceived poor quality sleep and insufficient sleep duration) among students and to identify unhealthy behaviors associated with this outcome. This study is part of a school-based, cross-sectional su...

The aim of the study was to compare by gender the variables of aspects related to health perception and preventive behavior of students in public school attending high school in the city of Manaus. 894 students were selected (15-19 years) being and 393 boys and 501 girls. Data were collected through a questionnaire developed and validated for adole...

Background: Our purpose was to examine the association of television viewing (hours/day), sedentary work (predominantly sitting at work), passive transportation to work (car or motorcycle), and the clustering of these behaviors ("sedentary lifestyle"), as well as leisure-time physical inactivity (LTPI), with chronic diseases (hypertension, hyperch...

The study established characteristics of practices and practitioners of leisure-time physical activities among adults in Florianopolis, Brazil. It was a population-based, cross-sectional survey conducted between September 2009 and January 2010. Leisure-time physical activity was assessed using a validated questionnaire. Walking and weight lifting w...

To examine changes in the time spent in each mode of transportation used for going to school by gender and age among adolescents from Santa Catarina State, Brazil. Two school-based surveys were performed in 2001 (N = 5,028) and 2011 (N = 6,529) in high school students (15-19 years old). The mode of transportation (on foot; by bicycle; by bus; car/m...

Lifestyle characteristics can modify the self-rated health of young people, but additional prospective evidence is needed. This study examined the association between changes in lifestyle and self-rated health among students. A secondary analysis of the “Saúde na Boa” project was performed, considering data from 984 students (14-24 years old, 56.9%...

A escola é um local favorável ao desenvolvimento de intervenções para o aumento da atividade física devido à possibilidade de alcançar simultaneamente grande número de indivíduos. O objetivo do estudo foi verificar a efetividade de uma intervenção para promoção da atividade física (projeto Saúde na Boa) em relação aos estágios de mudança do comport...

DOI: http://dx.doi.org/10.5007/1980-0037.2014v16s1p46 Embora os estudos demonstrem que o ambiente escolar seja um contexto favorável para a prevenção da obesidade, há ainda relativa escassez de pesquisas relacionadas à prevenção do ganho de peso em jovens. O objetivo do estudo foi avaliar a efetividade de uma intervenção sobre a obesidade geral e...

Intervenções no ambiente escolar têm sido avaliadas para analisar a qualidade da implementação de suas ações e o perfil dos participantes envolvidos. O objetivo deste estudo foi analisar os resultados da avaliação de processo da intervenção “Saúde na Boa”; e testar diferenças entre estudantes permanecentes e não permanecentes até o final da interve...

Objective: To estimate the prevalence of overweight in industry workers and its association with demographic and socioeconomic factors and soft drink intake (including type). Methods: This is a nationwide cross-sectional cohort survey of "Lifestyle and leisure habits of industry workers" conducted between 2006 and 2008 in 24 Brazilian federate uni...

The association between health behaviors and sleep patterns in youths has been tested using cross-sectional data, and prospective evidence is needed. The aim of this study was to investigate the cross-sectional and prospective associations between behavioral variables and sleep quality and duration. A secondary analysis was conducted using data tha...

DOI: http://dx.doi.org/10.5007/1980-0037.2014v16s1pi

Interventions during adolescence are important for modifying risk eating behavior that contribute to the early development of obesity and other non-transmissible chronic diseases, such as the consumption of high energy-dense and low nutrient-dense foods. The aim of this study was to assess the effect of a school-based intervention on the diet of hi...

To investigate gender differences in the clustering of risk behaviours associated with chronic non-communicable diseases in Brazilian adolescents. A cross-sectional survey was conducted in 2011 comprising 6,529 adolescents aged 15-19 years from Santa Catarina State, Brazil. Excessive screen-time, insufficient moderate to vigorous physical activity...

Few interventions to reduce sedentary behavior in youth have been successful and have had only subtle effects. The aim of the study was to assess the effectiveness of a school-based intervention to promote physical activity and healthy eating habits on screen time indicators in students. This was a randomized controlled intervention study of high s...

Although studies have shown that the school setting is favorable for preventing obesity, relatively few studies have examined weight-gain prevention in youths. To assess the effectiveness of a nine-month intervention to reduce total and central obesity in youths attending night secondary school in two Brazilian state capitals (Florianópolis and Rec...

DOI: http://dx.doi.org/10.5007/1980-0037.2014v16s1p13 A escola é um local favorável ao desenvolvimento de intervenções para o aumento da atividade física devido à possibilidade de alcançar simultaneamente grande número de indivíduos. O objetivo do estudo foi verificar a efetividade de uma intervenção para promoção da atividade física (projeto Saúd...

School-based interventions have been evaluated to examine its implementation quality and to identify the characteristics of successful participants. The objective was to analyze the process evaluation of the “Saúde na Boa” intervention and to test differences between successful participants and dropouts. Twenty schools were randomly selected to rec...

Economic and technological improvements can help increase screen time use among adolescents, but evidence in developing countries is scarce. The aim of this study was to examine changes in TV watching and computer/video game use patterns on week and weekend days after a decade (2001 and 2011), among students in Santa Catarina, southern Brazil. A co...

Objectives: To compare the prevalence of television (TV) watching and of computer/videogame use among high school students (15-19 years) from Southern Brazil between 2001 and 2011 and to identify associated socio-demographic factors. Methods: Panel studies were conducted with high school students in the state of Santa Catarina, Brazil, in 2001 (...