Adair Lopes | Universidade Federal de Santa Catarina - UFSC (Federal University of Santa Catarina) (original) (raw)

Papers by Adair Lopes

Research paper thumbnail of <b>Prevalence of low physical activity level among preschool children.</b> DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390

DOAJ (DOAJ: Directory of Open Access Journals), Jul 1, 2012

DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a de... more DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a decisive role in motor development and prevention of childhood obesity. The available evidence suggests that there is high preva­lence of low levels of PA in children, but little is known about the level of PA in preschool children. The objective of this study was to identify the prevalence and the factors associated with low levels of PA in preschool children. This was a cross-sectional study performed in private schools in the municipality of Olinda (state of Pernambuco), with data collection through parent's face-to-face interviews. The study included 265 children (54.3% girls) with mean age of 4.9 years (SD=0.8). Children who did not perform at least 60 minutes/day of outdoors physical activities were considered exposed to low levels of PA. Data analysis was performed by logistic regression considering low level of PA as the outcome. The results showed that 65.3% (95%CI: 9.4-70.8) of children were classified as exposed to 'low level of PA'. Analysis showed that higher parental education (OR=2.41; 95%CI: 1.13-5.10), lack of space for playing at home (OR=2.36; 95%CI: 1.17- 4.78), and attending school in the afternoon (OR=2.92, 95%CI 1.55-5.49) or full-time (OR=57.1, 95%CI 6.57-496.2) were associated with low levels of PA. Preschoolers from families with higher number of children had lower likelihood of low level of PA (OR=0.49; 95%CI 0.26-0.93). It can be concluded that the proportion of children exposed to low levels of PA is high compared to the results of similar studies and that parental and environmental factors are associated with physical activity level in preschool-aged children.

Research paper thumbnail of Alcohol consumption and smoking: relationship to leisure-time physical inactivity and sedentary behavior

Revista Portuguesa De Pneumologia, 2015

Objective To analyze the relationship between exposure to alcohol consumption and smoking to leis... more Objective To analyze the relationship between exposure to alcohol consumption and smoking to leisure‐time physical inactivity (LTPI) and sedentary behavior (SB) in adolescents.

Research paper thumbnail of Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students

Ciencia & Saude Coletiva, Mar 1, 2021

Validity and reliability of an instrument to measure factors associated with screen time in Brazi... more Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students Validade e confiabilidade de um instrumento para avaliar fatores associados ao tempo de tela em escolares brasileiros Resumo Este estudo analisou a validade e a confiabilidade de um instrumento com escalas de fatores associados ao tempo de tela em adolescentes. Dois estudos transversais incluíram escolares para análises de validade (n=1138, 51,5% meninos) e reprodutibilidade teste-reteste (n=194, 56,2% meninos) do instrumento. Fatores individuais (atitude, autoeficácia e expectativas), do ambiente social (comportamentos, regras, crenças e suporte familiar e suporte dos membros da escola) e físico (casa e no quarto) associados ao tempo de tela foram avaliados. Todas as escalas do instrumento atenderam os critérios estatísticos de validade da análise fatorial exploratória (p<0.001). A análise fatorial exploratória indicou cinco escalas unidimensionais e três bi-dimensionais (autoeficácia, expectativas e comportamento familiares), com cargas fatoriais de 0,56 a 0,88. Houve correlações significativas entre quase todas as escalas e o tempo de tela reportado (p<0,05). Oito das nove escalas apresentaram um valor de α de Cronbach superior a 0,70, e o CCI variou de 0,63 a 0,83. O instrumento apresentou escalas que se apresentaram com validade e confiabilidade aceitáveis, podendo ser utilizado na mensuração de fatores associados ao tempo de tela em escolares brasileiros. Palavras-chave Estilos de vida sedentários, Fatores associados, Questionário, Testes de validade, Reprodutibilidade de resultados

Research paper thumbnail of <b>Prevalence of low physical activity level among preschool children.</b> DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390

Revista Brasileira de Cineantropometria e Desempenho Humano, 2012

DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a de... more DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a decisive role in motor development and prevention of childhood obesity. The available evidence suggests that there is high preva­lence of low levels of PA in children, but little is known about the level of PA in preschool children. The objective of this study was to identify the prevalence and the factors associated with low levels of PA in preschool children. This was a cross-sectional study performed in private schools in the municipality of Olinda (state of Pernambuco), with data collection through parent's face-to-face interviews. The study included 265 children (54.3% girls) with mean age of 4.9 years (SD=0.8). Children who did not perform at least 60 minutes/day of outdoors physical activities were considered exposed to low levels of PA. Data analysis was performed by logistic regression considering low level of PA as the outcome. The results showed that 65.3% (95%CI: 9.4-70.8) ...

Research paper thumbnail of Redalyc.Isolated and combined presence of elevated anthropometric indices in children: prevalence and sociodemographic correlates

How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative free themes 213

Research paper thumbnail of Association between socio-economic status and physical activity is mediated by social support in Brazilian students

Journal of sports sciences, Jan 20, 2018

This study evaluated whether the relationship between socioeconomic status (SES) and moderate-to-... more This study evaluated whether the relationship between socioeconomic status (SES) and moderate-to-vigorous physical activity (MVPA) is mediated by social support of peers and parents. A cross-sectional study included students (n = 1182) aged 11 to 18 years who were recruited in 2014 from public schools in Fortaleza, Brazil. Participants completed a questionnaire to assess all variables. Mediation analyses were performed to determine the role of parental support and peer support on the relationship between SES and MVPA. Also, moderated-mediation analyses with estimating of conditional indirect effects were performed in order to identify whether gender is a moderator of the mediating effect. A positive and significant association between SES and MVPA was found among Brazilian students, and social support of parents and peers were significant mediators of this relationship. Conditional indirect effects showed that both parental and peer support had a significant indirect effect among bo...

Research paper thumbnail of Active Commuting: Prevalence, Barriers, and Associated Variables

Journal of Physical Activity and Health, 2011

Background:Research has demonstrated that adolescents who actively commute have higher levels of ... more Background:Research has demonstrated that adolescents who actively commute have higher levels of physical activity (PA), which have declined precipitously over the past 30 years. The purpose of this study was to describe the prevalence of active commuting to school; and to identify barriers associated with active commuting.Methods:A cross-sectional study was conducted with 1672 students (46.8% boys and 53.2% girls) from 11 to 17 years of age in Caxias do Sul/RS, Brazil. The students were asked to answer questionnaires about active transport, PA, and sedentary behaviors. They also completed a cardiovascular fitness test and body composition measurements. The study used a multivariate Poisson regression analysis.Results:A total of 62.5% of students were observed to actively commute and the prevalence ratio (PR) of not actively commuting was associated with the type of school (Private: 2.41; 1.47, 3.95) and the time spent on commuting (>20 min: 1.93; 1.23, 3.03). The associated barr...

Research paper thumbnail of Qualidade de vida e atividade física em mulheres idosas

Revista Brasileira de Ciências do Envelhecimento Humano, 2005

Research paper thumbnail of Determinação do estado nutricional de adolescentes por meio de medidas referidas de peso e estatura: um estudo de validação

Revista Brasileira de Atividade Física & Saúde, Aug 30, 2012

Este estudo verificou a validade de medidas referidas de peso e estatura para a determinação do e... more Este estudo verificou a validade de medidas referidas de peso e estatura para a determinação do estado nutricional de adolescentes. Participaram do estudo 641 escolares do ensino médio da cidade de Londrina-PR que referiram suas medidas de peso e estatura, e, em seguida, foram pesados em uma balança digital e medidos em um estadiômetro. O índice de massa corporal (IMC) foi calculado e o estado nutricional foi determinado. Em média, o IMC obtido a partir das medidas referidas foi subestimado em ambos os sexos, sendo o grau de subestimação maior nas meninas comparadas aos meninos (0,44 e 0,24 kg/m 2). Houve tendência de maior subestimação do IMC entre escolares com excesso de peso (P<0,001). Um terço das meninas com excesso de peso não foram classificadas como tal pelas medidas referidas. A prevalência de excesso de peso a partir das medidas referidas foi subestimada no sexo feminino em 2,5 pontos percentuais (10,9 vs 8,4; P<0,05). Conclui-se que medidas referidas de peso e estatura subestimam o IMC de adolescentes, podendo levar a um incorreto diagnóstico do estado nutricional, principalmente em adolescentes do sexo feminino e/ou com excesso de peso corporal. Palavras-chave: validade, sobrepeso, obesidade, escolares. This study verified the validity of self-reported weight and height to determine the nutritional status of adolescents. A total of 641 students from high schools of Londrina-PR self reported their weight and height and, thereafter, had these variables measured with a digital scale and a stadiometer. The body mass index (BMI) was calculated from both self reported and measured weight and height and the nutritional status was determined. On average, the IMC obtained from self-reported measures was underestimated in both sexes, with a higher degree of underestimation in girls compared with boys (0.44 and 0.24kg/m2). There was a trend for stronger underestimation of BMI among those at risk of overweight (P<0.001). One third of girls at risk of overweight were misclassified from the self reported measures. The prevalence of girls at risk of overweight was underestimated in 2.5 percentage points (10.9 versus 8.4; p< 0.05). It was concluded that self reported measures of weight and height underestimate the BMI of adolescents, and misclassification of nutritional status is a concern, mainly in female and/or those at risk of overweight.

Research paper thumbnail of Presença isolada e combinada de indicadores antropométricos elevados em crianças: prevalência e fatores sociodemográficos associados

Ciência & Saúde Coletiva, 2016

Resumo Este estudo analisou a prevalência e os fatores sociodemográficos associados à presença is... more Resumo Este estudo analisou a prevalência e os fatores sociodemográficos associados à presença isolada e combinada de indicadores antropométricos elevados em crianças. Estudo descritivo com 2.035 crianças (6–11 anos de idade, 50,1% de meninas), selecionadas de forma aleatória em escolas de Colombo, Brasil. O Índice de Massa Corporal (IMC), Circunferência da Cintura (CC) e Razão Cintura-Estatura (RCEst) foram classificadas conforme critérios de referência. As variáveis exploratórias foram idade, sexo, rede de ensino, turno e zona de moradia. A regressão logística binária foi utilizada (p < 0,05). As prevalências de crianças com IMC, RCEst ou CC elevados foram 9,4% (intervalo de confiança [IC] de 95%: 3,3; 15,7), 8,7% (IC95%: 1,7; 15,9) e 4,4% (IC95%: 1,0; 7,9), respectivamente. A prevalência de um ou mais indicadores antropométricos elevados foi de 16,9% (IC95%: 5,4; 28,5). Crianças do sexo masculino (IMC elevado), mais novas (CC elevada) e da rede pública (IMC, CC ou RCEst elevad...

Research paper thumbnail of Rationale and methods of a cluster-randomized controlled trial to promote active and healthy lifestyles among Brazilian students: the “Fortaleça sua Saúde” program

BMC Public Health, 2015

Background: Interventions on adolescents' lifestyle are important, but the main mechanisms that e... more Background: Interventions on adolescents' lifestyle are important, but the main mechanisms that explain the changes (mediating variables) on lifestyle are unclear. This paper presents the rationale and methods of an intervention program focused on promoting active and healthy lifestyles (especially physical activity [PA] practice and reducing screen time) among Brazilian students-the Fortaleça sua Saúde program (Portuguese for "strengthen your health"). Methods/Design: This is a school-based cluster-randomized controlled trial. Three intervention and three control (no intervention) full-time public schools were randomly selected in Fortaleza, northeastern Brazil. Students (n = 1,272) from classes in Grades 7-9 were eligible, and 1,085 (548 in the intervention and 537 in control schools) completed the baseline and follow-up measures. The program duration was approximately four months and took place in 2014. Intervention strategies focused on teacher training, activities on health in the curriculum, active opportunities in the school environment (the availability of equipment for PA), and health education (health materials for students and parents). Data collection was undertaken before and immediately after the intervention. The primary variables included the practice of PA (weekly PA volume, PA behavior change stage and preference for PA during leisure-time) and screen time (TV and computer/video games). Potential intrapersonal, interpersonal and environmental mediators of PA and screen time were evaluated by a standardized questionnaire. Other lifestyle components (e.g., eating habits, substance use), psychological (e.g., self-rated health, body satisfaction) and biological (general and abdominal obesity) aspects, as well as academic performance were also evaluated in the total sample. Depressive symptoms, eating disorders, sleep quality, objectively-measured PA, and sedentary time were evaluated in obese students.

Research paper thumbnail of Health-related physical fitness indicators of male students

O objetivo do presente estudo foi descrever e comparar indicadores de aptidão física relacionados... more O objetivo do presente estudo foi descrever e comparar indicadores de aptidão física relacionados à saúde em escolares do sexo masculino, entre 8 e 10 anos de idade, residentes na região urbana do município de São Luiz Gonzaga, RS. A amostra foi constituída por 457 crianças (8 anos, n=123; 9 anos, n=157; 10 anos, n=177) e foi selecionada de forma aleatória por conglomerados. As variáveis analisadas foram: a resistência muscular localizada, através do teste abdominal (máximo de repetições em um minuto); a fl exibilidade, através do teste de sentar e alcançar; a resistência cardiorrespiratória, através do teste de corrida de 9 minutos e a composição corporal, através da gordura corporal relativa (%G) e da classifi cação do índice de adiposidade. Na análise dos dados utilizou-se a estatística descritiva, teste t de Student para amostras independentes, para comparação de uma média com um valor padrão, análise de variância ANOVA one way e o teste post hoc de Tukey (p<0,05). Os resultados evidenciaram poucas diferenças nos indicadores de aptidão física relacionados à saúde em relação às idades de 8, 9 e 10 anos. A maioria dos escolares apresentou resultados superiores aos critérios da AAHPERD (1984) nos testes físicos. Apesar de 64,9% dos escolares situarem-se dentro dos níveis recomendáveis de gordura corporal (entre 10% e 20%), 24,4% apresentaram excesso e 10,8% estavam abaixo dos valores recomendados para esta variável. Palavras-chave: aptidão física relacionada à saúde, gordura corporal, antropometria.

Research paper thumbnail of Commuting to School and to Work Among High School Students in Santa Catarina State, Brazil: A Comparative Analysis Between 2001 and 2011

Journal of Physical Activity and Health, 2014

Background:Commuting reflects an important opportunity for youth to engage in physical activity. ... more Background:Commuting reflects an important opportunity for youth to engage in physical activity. This study aimed to compare modes of commuting to school and to work and to identify sociodemographic factors associated with various modes of transportation.Methods:Epidemiologic study with a repeated cross-sectional design. Participants included high school students (15–19 years of age) from Santa Catarina state, Brazil, in 2001 (n = 5028) and 2011 (n = 6529). A questionnaire containing information on the type of transport used to commute to school and to work was administered.Results:Walking/bicycling and the use of the bus to commute to school and to work remained stable after a decade; however, the use of car/motorcycle to school (6.4% versus 12.6%) and to work (10.2% versus 19.7%) increased significantly. In both cases, females more frequently used buses, whereas males commuted to work by car/bus. Students from rural areas more commonly commuted to school by car/motorcycle, whereas...

Research paper thumbnail of Estresse Relacionado ao Trabalho em Professores de Educação Básica

Ciencia & trabajo, 2014

Considera-se preocupante a situação da saúde psíquica dos professores. Assim, faz-se necessário a... more Considera-se preocupante a situação da saúde psíquica dos professores. Assim, faz-se necessário a compreensão entre distúrbios psíquicos, especialmente de estresse, de acordo com as características do trabalho docente. Objetivos: analisar associações entre as características do trabalho e o estresse de professores de educação básica de Florianópolis-SC. Métodos: investigou-se o estresse, de acordo com a Teoria de Demanda-Controle, de 349 professores de educação básica, das redes estadual e municipal de Florianópolis-SC. Resultados/Discussão: A maior parte dos professores classificou seu trabalho como passivo (33%) ou de alto desgaste (29%). Apenas 13% dos professores classificaram-se como ativo. Maior percepção de demanda no trabalho esteve correlacionada com maior tempo de magistério (p=0,011) e maior carga horária semanal (p<0,001). Professores com 40 ou mais horas semanais apresentaram maior percepção de alto desgaste na avaliação do estresse relacionado ao trabalho. Os professores efetivos apresentaram maiores prevalências de trabalho de alto desgaste (p=0,034). Conclusões: ao contrário do discutido pela literatura a experiência no magistério não esteve associada com menores indicadores de estresse. Recomenda-se, a diminuição da carga horária semanal, para que os professores tenham melhoras nas relações entre demanda e controle no trabalho.

Research paper thumbnail of Qualidade de vida de professores de educação básica do município de Florianópolis, SC, Brasil

Ciência & Saúde Coletiva, 2013

Este estudo investigou a percepção de qualidade de vida e a contribuição dos domínios físico, psi... more Este estudo investigou a percepção de qualidade de vida e a contribuição dos domínios físico, psicológico, relações sociais e meio ambiente para a qualidade de vida geral de professores de educação básica do município de Florianópolis (SC). A amostra foi formada por 349 professores das redes estadual e municipal de ensino que responderam a um questionário com dados sociodemográficos e ao Whoqol-bref. A média de qualidade de vida geral foi de 63,75 pontos. O domínio meio ambiente apresentou menor escore médio (53,93 pontos) e o domínio relações sociais o maior (73,1 pontos). Os domínios meio ambiente e físico apresentaram maior associação com a qualidade de vida geral. Os professores da rede estadual de ensino apresentaram menores escores de qualidade de vida geral (p = 0,001), os quais estiveram correlacionados com maior tempo de magistério (p = 0,008) e maior carga de trabalho semanal (p = 0,013). Redução da carga horária, programas de promoção da saúde no decorrer da carreira e me...

Research paper thumbnail of Validity and reliability of an instrument to measure barriers to bike use in adults | Validade e fidedignidade de um instrumento para avaliar as barreiras para o uso de bicicleta em adultos

Resumo-O objetivo deste estudo foi analisar a validade e fidedignidade de um instrumento para ava... more Resumo-O objetivo deste estudo foi analisar a validade e fidedignidade de um instrumento para avaliar a percepção de barreiras para o uso da bicicleta no lazer e no transporte em adultos. Os itens que compuseram o instrumento foram selecionados a partir da revisão da literatura sobre o tema. A validade de conteúdo foi analisada pelo parecer consensual de especialistas da área de atividade física. A fidedignidade foi verificada por meio da consistência interna (alfa de Cronbach) e concordância (correlação intraclasse-CCI, coeficiente de Kappa e concordância relativa), em uma amostra de 66 adultos (18-79 anos), selecionados em três setores censitários de Curitiba-PR. Os dados foram analisados pelo programa SPSS versão 17.0, com nível de significância de 5%. A maior parte da amostra foi composta por mulheres (59%), com idade ≥40 anos (47%) e nível socioeconômico médio (68%). A frequência de utilização de bicicleta no lazer foi maior do que no transporte (15,2 vs 7,6%). A consistência interna dos itens apresentou valor de alpha Cronbach (α) significativo, tanto no lazer (α=0,77) quanto no transporte (α=0,82) e os itens da escala apresentaram concordância elevada no lazer (80,3 a 93,9%) e no transporte (76,9 a 90,8%). Os valores de Kappa foram moderados a elevados para os dois domínios (lazer: 0,41-0,82 e transporte: 0,53-0,82). O CCI dos subescores foi de 0,93 (IC 95% : 0,88-0,96) e 0,89 (IC 95% : 0,82-0,94) para o lazer e transporte, respectivamente. Conclui-se que o instrumento apresenta qualidade psicométrica adequada para avaliar barreiras para o uso de bicicleta em adultos. Palavras-chave: Atividades de lazer; Ciclismo; Deslocamento; Estruturas de acesso..

Research paper thumbnail of Time spent by Brazilian students in different modes of transport going to school: changes over a decade (2001-2011)

Cadernos de Saúde Pública, 2014

To examine changes in the time spent in each mode of transportation used for going to school by g... more 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/motorcycle) and the time spent for commuting to school were assessed. Active commuting increased for short trips in both genders (male: 25.1% to 36.7%; female: 18.8% to 29.2%) and in all ages (15-16 years: 21% to 32.7%; 17-19 years: 21.9% to 32.4%), and declined for longer trips in males (30.5% to 21.9%) and in 15-16 years old students (25.7% to 34.7%). Car/motorcycle use has doubled for short trips in males (38.1% to 65.9%) and in 17-19 years old students (37.7% to 62.7%), while the use of buses remained stable in both genders. Our findings contribute to discussions on public policy focusing on the design of safe environments to promote ac...

Research paper thumbnail of Efetividade de uma intervenção de base escolar sobre as práticas alimentares em estudantes do ensino médio

Revista Brasileira de Cineantropometria e Desempenho Humano, 2014

Effectiveness of a school-based intervention regarding screen time in high school students Efetiv... more Effectiveness of a school-based intervention regarding screen time in high school students Efetividade de uma intervenção de base escolar sobre o tempo de tela em estudantes do ensino médio

Research paper thumbnail of Epidemiology of physical inactivity, sedentary behaviors, and unhealthy eating habits among brazilian adolescents

Ciência & Saúde Coletiva, 2014

This systematic review analyzed the prevalence of physical inactivity, sedentary behaviors and un... more This systematic review analyzed the prevalence of physical inactivity, sedentary behaviors and unhealthy eating habits among Brazilian adolescents. Searches were conducted in five databases (Lilacs, SciELO, Medline, Web of Science, and Google Scholar) and in the references cited in the articles retrieved. The literature search yielded 5,872 potentially relevant titles and a total of 69 studies met all the inclusion criteria. The risk behavior most often evaluated was physical inactivity (48/69; 69.6%), and its prevalence rate ranged from 2.3% to 93.5%. Twenty-eight studies estimated the prevalence of physical inactivity at over 50%. Most studies observed the prevalence of greater physical inactivity among girls. The prevalence of sedentary behaviors (lengthy screen time or TV use) was also frequently over 50%. Several variables were used to identify unhealthy eating habits, and some criteria/studies have indicated unhealthy eating habit estimates at close to 100% among adolescents. ...

Research paper thumbnail of Mudanças nas condutas de saúde e o seu efeito na insatisfação com peso corporal em adolescentes

Revista Brasileira de Cineantropometria e Desempenho Humano, 2014

Changes in health-related behaviors and their effect on dissatisfaction with body weight in youth... more Changes in health-related behaviors and their effect on dissatisfaction with body weight in youths Mudanças nas condutas de saúde e o seu efeito na insatisfação com peso corporal em adolescentes

Research paper thumbnail of <b>Prevalence of low physical activity level among preschool children.</b> DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390

DOAJ (DOAJ: Directory of Open Access Journals), Jul 1, 2012

DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a de... more DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a decisive role in motor development and prevention of childhood obesity. The available evidence suggests that there is high preva­lence of low levels of PA in children, but little is known about the level of PA in preschool children. The objective of this study was to identify the prevalence and the factors associated with low levels of PA in preschool children. This was a cross-sectional study performed in private schools in the municipality of Olinda (state of Pernambuco), with data collection through parent's face-to-face interviews. The study included 265 children (54.3% girls) with mean age of 4.9 years (SD=0.8). Children who did not perform at least 60 minutes/day of outdoors physical activities were considered exposed to low levels of PA. Data analysis was performed by logistic regression considering low level of PA as the outcome. The results showed that 65.3% (95%CI: 9.4-70.8) of children were classified as exposed to 'low level of PA'. Analysis showed that higher parental education (OR=2.41; 95%CI: 1.13-5.10), lack of space for playing at home (OR=2.36; 95%CI: 1.17- 4.78), and attending school in the afternoon (OR=2.92, 95%CI 1.55-5.49) or full-time (OR=57.1, 95%CI 6.57-496.2) were associated with low levels of PA. Preschoolers from families with higher number of children had lower likelihood of low level of PA (OR=0.49; 95%CI 0.26-0.93). It can be concluded that the proportion of children exposed to low levels of PA is high compared to the results of similar studies and that parental and environmental factors are associated with physical activity level in preschool-aged children.

Research paper thumbnail of Alcohol consumption and smoking: relationship to leisure-time physical inactivity and sedentary behavior

Revista Portuguesa De Pneumologia, 2015

Objective To analyze the relationship between exposure to alcohol consumption and smoking to leis... more Objective To analyze the relationship between exposure to alcohol consumption and smoking to leisure‐time physical inactivity (LTPI) and sedentary behavior (SB) in adolescents.

Research paper thumbnail of Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students

Ciencia & Saude Coletiva, Mar 1, 2021

Validity and reliability of an instrument to measure factors associated with screen time in Brazi... more Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students Validade e confiabilidade de um instrumento para avaliar fatores associados ao tempo de tela em escolares brasileiros Resumo Este estudo analisou a validade e a confiabilidade de um instrumento com escalas de fatores associados ao tempo de tela em adolescentes. Dois estudos transversais incluíram escolares para análises de validade (n=1138, 51,5% meninos) e reprodutibilidade teste-reteste (n=194, 56,2% meninos) do instrumento. Fatores individuais (atitude, autoeficácia e expectativas), do ambiente social (comportamentos, regras, crenças e suporte familiar e suporte dos membros da escola) e físico (casa e no quarto) associados ao tempo de tela foram avaliados. Todas as escalas do instrumento atenderam os critérios estatísticos de validade da análise fatorial exploratória (p<0.001). A análise fatorial exploratória indicou cinco escalas unidimensionais e três bi-dimensionais (autoeficácia, expectativas e comportamento familiares), com cargas fatoriais de 0,56 a 0,88. Houve correlações significativas entre quase todas as escalas e o tempo de tela reportado (p<0,05). Oito das nove escalas apresentaram um valor de α de Cronbach superior a 0,70, e o CCI variou de 0,63 a 0,83. O instrumento apresentou escalas que se apresentaram com validade e confiabilidade aceitáveis, podendo ser utilizado na mensuração de fatores associados ao tempo de tela em escolares brasileiros. Palavras-chave Estilos de vida sedentários, Fatores associados, Questionário, Testes de validade, Reprodutibilidade de resultados

Research paper thumbnail of <b>Prevalence of low physical activity level among preschool children.</b> DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390

Revista Brasileira de Cineantropometria e Desempenho Humano, 2012

DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a de... more DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n4p390Physical activity (PA) in children has a decisive role in motor development and prevention of childhood obesity. The available evidence suggests that there is high preva­lence of low levels of PA in children, but little is known about the level of PA in preschool children. The objective of this study was to identify the prevalence and the factors associated with low levels of PA in preschool children. This was a cross-sectional study performed in private schools in the municipality of Olinda (state of Pernambuco), with data collection through parent's face-to-face interviews. The study included 265 children (54.3% girls) with mean age of 4.9 years (SD=0.8). Children who did not perform at least 60 minutes/day of outdoors physical activities were considered exposed to low levels of PA. Data analysis was performed by logistic regression considering low level of PA as the outcome. The results showed that 65.3% (95%CI: 9.4-70.8) ...

Research paper thumbnail of Redalyc.Isolated and combined presence of elevated anthropometric indices in children: prevalence and sociodemographic correlates

How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative free themes 213

Research paper thumbnail of Association between socio-economic status and physical activity is mediated by social support in Brazilian students

Journal of sports sciences, Jan 20, 2018

This study evaluated whether the relationship between socioeconomic status (SES) and moderate-to-... more This study evaluated whether the relationship between socioeconomic status (SES) and moderate-to-vigorous physical activity (MVPA) is mediated by social support of peers and parents. A cross-sectional study included students (n = 1182) aged 11 to 18 years who were recruited in 2014 from public schools in Fortaleza, Brazil. Participants completed a questionnaire to assess all variables. Mediation analyses were performed to determine the role of parental support and peer support on the relationship between SES and MVPA. Also, moderated-mediation analyses with estimating of conditional indirect effects were performed in order to identify whether gender is a moderator of the mediating effect. A positive and significant association between SES and MVPA was found among Brazilian students, and social support of parents and peers were significant mediators of this relationship. Conditional indirect effects showed that both parental and peer support had a significant indirect effect among bo...

Research paper thumbnail of Active Commuting: Prevalence, Barriers, and Associated Variables

Journal of Physical Activity and Health, 2011

Background:Research has demonstrated that adolescents who actively commute have higher levels of ... more Background:Research has demonstrated that adolescents who actively commute have higher levels of physical activity (PA), which have declined precipitously over the past 30 years. The purpose of this study was to describe the prevalence of active commuting to school; and to identify barriers associated with active commuting.Methods:A cross-sectional study was conducted with 1672 students (46.8% boys and 53.2% girls) from 11 to 17 years of age in Caxias do Sul/RS, Brazil. The students were asked to answer questionnaires about active transport, PA, and sedentary behaviors. They also completed a cardiovascular fitness test and body composition measurements. The study used a multivariate Poisson regression analysis.Results:A total of 62.5% of students were observed to actively commute and the prevalence ratio (PR) of not actively commuting was associated with the type of school (Private: 2.41; 1.47, 3.95) and the time spent on commuting (>20 min: 1.93; 1.23, 3.03). The associated barr...

Research paper thumbnail of Qualidade de vida e atividade física em mulheres idosas

Revista Brasileira de Ciências do Envelhecimento Humano, 2005

Research paper thumbnail of Determinação do estado nutricional de adolescentes por meio de medidas referidas de peso e estatura: um estudo de validação

Revista Brasileira de Atividade Física & Saúde, Aug 30, 2012

Este estudo verificou a validade de medidas referidas de peso e estatura para a determinação do e... more Este estudo verificou a validade de medidas referidas de peso e estatura para a determinação do estado nutricional de adolescentes. Participaram do estudo 641 escolares do ensino médio da cidade de Londrina-PR que referiram suas medidas de peso e estatura, e, em seguida, foram pesados em uma balança digital e medidos em um estadiômetro. O índice de massa corporal (IMC) foi calculado e o estado nutricional foi determinado. Em média, o IMC obtido a partir das medidas referidas foi subestimado em ambos os sexos, sendo o grau de subestimação maior nas meninas comparadas aos meninos (0,44 e 0,24 kg/m 2). Houve tendência de maior subestimação do IMC entre escolares com excesso de peso (P<0,001). Um terço das meninas com excesso de peso não foram classificadas como tal pelas medidas referidas. A prevalência de excesso de peso a partir das medidas referidas foi subestimada no sexo feminino em 2,5 pontos percentuais (10,9 vs 8,4; P<0,05). Conclui-se que medidas referidas de peso e estatura subestimam o IMC de adolescentes, podendo levar a um incorreto diagnóstico do estado nutricional, principalmente em adolescentes do sexo feminino e/ou com excesso de peso corporal. Palavras-chave: validade, sobrepeso, obesidade, escolares. This study verified the validity of self-reported weight and height to determine the nutritional status of adolescents. A total of 641 students from high schools of Londrina-PR self reported their weight and height and, thereafter, had these variables measured with a digital scale and a stadiometer. The body mass index (BMI) was calculated from both self reported and measured weight and height and the nutritional status was determined. On average, the IMC obtained from self-reported measures was underestimated in both sexes, with a higher degree of underestimation in girls compared with boys (0.44 and 0.24kg/m2). There was a trend for stronger underestimation of BMI among those at risk of overweight (P<0.001). One third of girls at risk of overweight were misclassified from the self reported measures. The prevalence of girls at risk of overweight was underestimated in 2.5 percentage points (10.9 versus 8.4; p< 0.05). It was concluded that self reported measures of weight and height underestimate the BMI of adolescents, and misclassification of nutritional status is a concern, mainly in female and/or those at risk of overweight.

Research paper thumbnail of Presença isolada e combinada de indicadores antropométricos elevados em crianças: prevalência e fatores sociodemográficos associados

Ciência & Saúde Coletiva, 2016

Resumo Este estudo analisou a prevalência e os fatores sociodemográficos associados à presença is... more Resumo Este estudo analisou a prevalência e os fatores sociodemográficos associados à presença isolada e combinada de indicadores antropométricos elevados em crianças. Estudo descritivo com 2.035 crianças (6–11 anos de idade, 50,1% de meninas), selecionadas de forma aleatória em escolas de Colombo, Brasil. O Índice de Massa Corporal (IMC), Circunferência da Cintura (CC) e Razão Cintura-Estatura (RCEst) foram classificadas conforme critérios de referência. As variáveis exploratórias foram idade, sexo, rede de ensino, turno e zona de moradia. A regressão logística binária foi utilizada (p < 0,05). As prevalências de crianças com IMC, RCEst ou CC elevados foram 9,4% (intervalo de confiança [IC] de 95%: 3,3; 15,7), 8,7% (IC95%: 1,7; 15,9) e 4,4% (IC95%: 1,0; 7,9), respectivamente. A prevalência de um ou mais indicadores antropométricos elevados foi de 16,9% (IC95%: 5,4; 28,5). Crianças do sexo masculino (IMC elevado), mais novas (CC elevada) e da rede pública (IMC, CC ou RCEst elevad...

Research paper thumbnail of Rationale and methods of a cluster-randomized controlled trial to promote active and healthy lifestyles among Brazilian students: the “Fortaleça sua Saúde” program

BMC Public Health, 2015

Background: Interventions on adolescents' lifestyle are important, but the main mechanisms that e... more Background: Interventions on adolescents' lifestyle are important, but the main mechanisms that explain the changes (mediating variables) on lifestyle are unclear. This paper presents the rationale and methods of an intervention program focused on promoting active and healthy lifestyles (especially physical activity [PA] practice and reducing screen time) among Brazilian students-the Fortaleça sua Saúde program (Portuguese for "strengthen your health"). Methods/Design: This is a school-based cluster-randomized controlled trial. Three intervention and three control (no intervention) full-time public schools were randomly selected in Fortaleza, northeastern Brazil. Students (n = 1,272) from classes in Grades 7-9 were eligible, and 1,085 (548 in the intervention and 537 in control schools) completed the baseline and follow-up measures. The program duration was approximately four months and took place in 2014. Intervention strategies focused on teacher training, activities on health in the curriculum, active opportunities in the school environment (the availability of equipment for PA), and health education (health materials for students and parents). Data collection was undertaken before and immediately after the intervention. The primary variables included the practice of PA (weekly PA volume, PA behavior change stage and preference for PA during leisure-time) and screen time (TV and computer/video games). Potential intrapersonal, interpersonal and environmental mediators of PA and screen time were evaluated by a standardized questionnaire. Other lifestyle components (e.g., eating habits, substance use), psychological (e.g., self-rated health, body satisfaction) and biological (general and abdominal obesity) aspects, as well as academic performance were also evaluated in the total sample. Depressive symptoms, eating disorders, sleep quality, objectively-measured PA, and sedentary time were evaluated in obese students.

Research paper thumbnail of Health-related physical fitness indicators of male students

O objetivo do presente estudo foi descrever e comparar indicadores de aptidão física relacionados... more O objetivo do presente estudo foi descrever e comparar indicadores de aptidão física relacionados à saúde em escolares do sexo masculino, entre 8 e 10 anos de idade, residentes na região urbana do município de São Luiz Gonzaga, RS. A amostra foi constituída por 457 crianças (8 anos, n=123; 9 anos, n=157; 10 anos, n=177) e foi selecionada de forma aleatória por conglomerados. As variáveis analisadas foram: a resistência muscular localizada, através do teste abdominal (máximo de repetições em um minuto); a fl exibilidade, através do teste de sentar e alcançar; a resistência cardiorrespiratória, através do teste de corrida de 9 minutos e a composição corporal, através da gordura corporal relativa (%G) e da classifi cação do índice de adiposidade. Na análise dos dados utilizou-se a estatística descritiva, teste t de Student para amostras independentes, para comparação de uma média com um valor padrão, análise de variância ANOVA one way e o teste post hoc de Tukey (p<0,05). Os resultados evidenciaram poucas diferenças nos indicadores de aptidão física relacionados à saúde em relação às idades de 8, 9 e 10 anos. A maioria dos escolares apresentou resultados superiores aos critérios da AAHPERD (1984) nos testes físicos. Apesar de 64,9% dos escolares situarem-se dentro dos níveis recomendáveis de gordura corporal (entre 10% e 20%), 24,4% apresentaram excesso e 10,8% estavam abaixo dos valores recomendados para esta variável. Palavras-chave: aptidão física relacionada à saúde, gordura corporal, antropometria.

Research paper thumbnail of Commuting to School and to Work Among High School Students in Santa Catarina State, Brazil: A Comparative Analysis Between 2001 and 2011

Journal of Physical Activity and Health, 2014

Background:Commuting reflects an important opportunity for youth to engage in physical activity. ... more Background:Commuting reflects an important opportunity for youth to engage in physical activity. This study aimed to compare modes of commuting to school and to work and to identify sociodemographic factors associated with various modes of transportation.Methods:Epidemiologic study with a repeated cross-sectional design. Participants included high school students (15–19 years of age) from Santa Catarina state, Brazil, in 2001 (n = 5028) and 2011 (n = 6529). A questionnaire containing information on the type of transport used to commute to school and to work was administered.Results:Walking/bicycling and the use of the bus to commute to school and to work remained stable after a decade; however, the use of car/motorcycle to school (6.4% versus 12.6%) and to work (10.2% versus 19.7%) increased significantly. In both cases, females more frequently used buses, whereas males commuted to work by car/bus. Students from rural areas more commonly commuted to school by car/motorcycle, whereas...

Research paper thumbnail of Estresse Relacionado ao Trabalho em Professores de Educação Básica

Ciencia & trabajo, 2014

Considera-se preocupante a situação da saúde psíquica dos professores. Assim, faz-se necessário a... more Considera-se preocupante a situação da saúde psíquica dos professores. Assim, faz-se necessário a compreensão entre distúrbios psíquicos, especialmente de estresse, de acordo com as características do trabalho docente. Objetivos: analisar associações entre as características do trabalho e o estresse de professores de educação básica de Florianópolis-SC. Métodos: investigou-se o estresse, de acordo com a Teoria de Demanda-Controle, de 349 professores de educação básica, das redes estadual e municipal de Florianópolis-SC. Resultados/Discussão: A maior parte dos professores classificou seu trabalho como passivo (33%) ou de alto desgaste (29%). Apenas 13% dos professores classificaram-se como ativo. Maior percepção de demanda no trabalho esteve correlacionada com maior tempo de magistério (p=0,011) e maior carga horária semanal (p<0,001). Professores com 40 ou mais horas semanais apresentaram maior percepção de alto desgaste na avaliação do estresse relacionado ao trabalho. Os professores efetivos apresentaram maiores prevalências de trabalho de alto desgaste (p=0,034). Conclusões: ao contrário do discutido pela literatura a experiência no magistério não esteve associada com menores indicadores de estresse. Recomenda-se, a diminuição da carga horária semanal, para que os professores tenham melhoras nas relações entre demanda e controle no trabalho.

Research paper thumbnail of Qualidade de vida de professores de educação básica do município de Florianópolis, SC, Brasil

Ciência & Saúde Coletiva, 2013

Este estudo investigou a percepção de qualidade de vida e a contribuição dos domínios físico, psi... more Este estudo investigou a percepção de qualidade de vida e a contribuição dos domínios físico, psicológico, relações sociais e meio ambiente para a qualidade de vida geral de professores de educação básica do município de Florianópolis (SC). A amostra foi formada por 349 professores das redes estadual e municipal de ensino que responderam a um questionário com dados sociodemográficos e ao Whoqol-bref. A média de qualidade de vida geral foi de 63,75 pontos. O domínio meio ambiente apresentou menor escore médio (53,93 pontos) e o domínio relações sociais o maior (73,1 pontos). Os domínios meio ambiente e físico apresentaram maior associação com a qualidade de vida geral. Os professores da rede estadual de ensino apresentaram menores escores de qualidade de vida geral (p = 0,001), os quais estiveram correlacionados com maior tempo de magistério (p = 0,008) e maior carga de trabalho semanal (p = 0,013). Redução da carga horária, programas de promoção da saúde no decorrer da carreira e me...

Research paper thumbnail of Validity and reliability of an instrument to measure barriers to bike use in adults | Validade e fidedignidade de um instrumento para avaliar as barreiras para o uso de bicicleta em adultos

Resumo-O objetivo deste estudo foi analisar a validade e fidedignidade de um instrumento para ava... more Resumo-O objetivo deste estudo foi analisar a validade e fidedignidade de um instrumento para avaliar a percepção de barreiras para o uso da bicicleta no lazer e no transporte em adultos. Os itens que compuseram o instrumento foram selecionados a partir da revisão da literatura sobre o tema. A validade de conteúdo foi analisada pelo parecer consensual de especialistas da área de atividade física. A fidedignidade foi verificada por meio da consistência interna (alfa de Cronbach) e concordância (correlação intraclasse-CCI, coeficiente de Kappa e concordância relativa), em uma amostra de 66 adultos (18-79 anos), selecionados em três setores censitários de Curitiba-PR. Os dados foram analisados pelo programa SPSS versão 17.0, com nível de significância de 5%. A maior parte da amostra foi composta por mulheres (59%), com idade ≥40 anos (47%) e nível socioeconômico médio (68%). A frequência de utilização de bicicleta no lazer foi maior do que no transporte (15,2 vs 7,6%). A consistência interna dos itens apresentou valor de alpha Cronbach (α) significativo, tanto no lazer (α=0,77) quanto no transporte (α=0,82) e os itens da escala apresentaram concordância elevada no lazer (80,3 a 93,9%) e no transporte (76,9 a 90,8%). Os valores de Kappa foram moderados a elevados para os dois domínios (lazer: 0,41-0,82 e transporte: 0,53-0,82). O CCI dos subescores foi de 0,93 (IC 95% : 0,88-0,96) e 0,89 (IC 95% : 0,82-0,94) para o lazer e transporte, respectivamente. Conclui-se que o instrumento apresenta qualidade psicométrica adequada para avaliar barreiras para o uso de bicicleta em adultos. Palavras-chave: Atividades de lazer; Ciclismo; Deslocamento; Estruturas de acesso..

Research paper thumbnail of Time spent by Brazilian students in different modes of transport going to school: changes over a decade (2001-2011)

Cadernos de Saúde Pública, 2014

To examine changes in the time spent in each mode of transportation used for going to school by g... more 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/motorcycle) and the time spent for commuting to school were assessed. Active commuting increased for short trips in both genders (male: 25.1% to 36.7%; female: 18.8% to 29.2%) and in all ages (15-16 years: 21% to 32.7%; 17-19 years: 21.9% to 32.4%), and declined for longer trips in males (30.5% to 21.9%) and in 15-16 years old students (25.7% to 34.7%). Car/motorcycle use has doubled for short trips in males (38.1% to 65.9%) and in 17-19 years old students (37.7% to 62.7%), while the use of buses remained stable in both genders. Our findings contribute to discussions on public policy focusing on the design of safe environments to promote ac...

Research paper thumbnail of Efetividade de uma intervenção de base escolar sobre as práticas alimentares em estudantes do ensino médio

Revista Brasileira de Cineantropometria e Desempenho Humano, 2014

Effectiveness of a school-based intervention regarding screen time in high school students Efetiv... more Effectiveness of a school-based intervention regarding screen time in high school students Efetividade de uma intervenção de base escolar sobre o tempo de tela em estudantes do ensino médio

Research paper thumbnail of Epidemiology of physical inactivity, sedentary behaviors, and unhealthy eating habits among brazilian adolescents

Ciência & Saúde Coletiva, 2014

This systematic review analyzed the prevalence of physical inactivity, sedentary behaviors and un... more This systematic review analyzed the prevalence of physical inactivity, sedentary behaviors and unhealthy eating habits among Brazilian adolescents. Searches were conducted in five databases (Lilacs, SciELO, Medline, Web of Science, and Google Scholar) and in the references cited in the articles retrieved. The literature search yielded 5,872 potentially relevant titles and a total of 69 studies met all the inclusion criteria. The risk behavior most often evaluated was physical inactivity (48/69; 69.6%), and its prevalence rate ranged from 2.3% to 93.5%. Twenty-eight studies estimated the prevalence of physical inactivity at over 50%. Most studies observed the prevalence of greater physical inactivity among girls. The prevalence of sedentary behaviors (lengthy screen time or TV use) was also frequently over 50%. Several variables were used to identify unhealthy eating habits, and some criteria/studies have indicated unhealthy eating habit estimates at close to 100% among adolescents. ...

Research paper thumbnail of Mudanças nas condutas de saúde e o seu efeito na insatisfação com peso corporal em adolescentes

Revista Brasileira de Cineantropometria e Desempenho Humano, 2014

Changes in health-related behaviors and their effect on dissatisfaction with body weight in youth... more Changes in health-related behaviors and their effect on dissatisfaction with body weight in youths Mudanças nas condutas de saúde e o seu efeito na insatisfação com peso corporal em adolescentes