Accumulation of iron in thalassemia causes Rev. Bras. Hematol. Hemoter. 2008;30(6):449-452.

Fitness zones (FZ) are a great alternative to physical activity practice. The aim of this study was verify physical activity practice and associated factors among FZ users of Pelotas. Participants answered a questionnaire containing demographic, socioeconomic, behavioral, health and on the use of FZs. A long version of the International Physical Activity Questionnaire was used to determine the level of physical activity and those who reported at least 150 minutes / week of PA in the leisure time were considered sufficiently active. The study included 323 subjects (65.3% women), mean age 52.5 years, 83.6% white skin color and 61.9% married. Almost half of respondents were overweight (48.0%), 45.8% had high blood pressure, 10.5% had diabetes and 64.4% used medications. About 77.7% of respondents were classified as sufficiently active. Health perception was associated to leisure physical activity, and the better the health perception, the higher the prevalence of sufficient physical activity. Collective programs with participation of Physical Education teacher can contribute to interaction of practitioners with the use of fitness zones and increase the level of physical activity of individuals.Resumo -As Academias ao Ar Livre (AAL) são uma ótima alternativa para realização de atividade física (AF) de forma gratuita. O objetivo deste estudo foi verificar a prática de AF e fatores associados em reqüentadores das AAL de Pelotas-RS. Os participantes responderam a um questionário contendo questões demográficas, socioeconômicas, comportamentais, de saúde e relativas à utilização das AAL. Foi utilizada a versão longa do International Physical Activity Questionnaire para determinar o nível atividade física dos indivíduos e foram considerados suficientemente ativos aqueles que relataram pelo menos 150 minutos/semana de AF no domínio de lazer. Participaram do estudo 323 indivíduos (65,3% mulheres), com média de idade de 52,5 anos, 83,6% de pele branca e 61,9% casados. Quase a metade dos entrevistados apresentava sobrepeso (48,0%), 45,8%, pressão alta,10,5% diabetes e 64,4% utilizam medicamentos. Foram classificados como suficientemente ativos 77,7% dos entrevistados. Tanto na análise bivariada quanto na multivariável a percepção de saúde se mostrou associada à AF de lazer, sendo que quanto melhor à percepção de saúde maior a prevalência de AF suficiente. Programas coletivos com participação do professor de Educação Física podem colaborar para interação dos praticantes com o uso das AAL e aumentar o nível de atividade física dos indivíduos.

The aim of the study was to investigate the sources of information about the importance of physical activity and its association with physical activity level among high school students from the urban area of Pelotas, Brazil. A school-based study was conducted in Pelotas, with a sample of 1233 students 13-19 years-old. A self-administered questionnaire containing sociodemographic, economic, behavioral and health variable was applied. The source of information on importance of practice was assessed in two stages, the first by the question, "Have you been informed that physical activity is good for health?" and, if so, by request mark (s) option (s) where the information was obtained. The practice of leisure time physical activity was assessed through a questionnaire. The crude and adjusted analysis were conducted by Poisson regression. Almost all students (99.8%) reported having been informed that physical activity is good for health. Among the most frequently reported sources of information for men and women, respectively, were television (93.4%-95% CI= 91.1 to 95.7; 95.9%-95%CI= 91.0 to 95.3), physical education teacher (85.6%-95%CI= 81.1 to 86.8; 84.1%-95%CI= 82.4 to 86.8) and physician (75.9%-95% CI= 72.2 to 79.4; 73.3% 95%-CI= 69.8 to 76.7), with no statistical difference between the sexes. After adjustment for confounders, friends were the only source of information associated with the practice of physical activity. Those who received information from friends showed 41.0% more likely to engage in physical activity during leisure time compared to those who did not.

Background: Sleep disorders are receiving increasing attention in the occupational medicine literature as a function of their substantial impact on the functional recovery of workers. Objective: To investigate the relationship of leisure-time and transportation physical activity with sleep duration among technical-administrative employees at a public university. Method: The sample comprised 371 participants. Data collection was performed by means of a self-report questionnaire for sociodemographic, nutritional, behavioral, health and occupational variables. We performed crude and adjusted analysis of the association between physical activity level and outcomes. Results: Leisure-time physical activity exhibited positive correlation with sleep time on weekdays (β=22.2; p=0.006) and weekends (β=31.3; p=0.007). Transportation physical activity exhibited negative correlation with sleep time on weekends (β=-44.5; p<0.001). Conclusion: Leisure-time physical activity was associated with longer sleep duration on weekdays and weekends. Differently, transportation physical activity was associated with shorter sleep time on weekends. More studies, especially intervention studies, are needed to achieve a better understanding of the relationship between physical activity domains and sleep duration among workers. Keywords | sleep; occupational health; motor activity. RESUMO | Introdução:Alterações no sono têm ganhado destaque na literatura relacionada à saúde do trabalhador por exercerem uma função fundamental na recuperação desses indivíduos. Objetivo: Verificar a relação entre o nível de atividade física no domínio do lazer e do deslocamento e a duração do sono de servidores técnico-administrativos de uma universidade pública. Método: A amostra foi composta de 371 sujeitos. A coleta de dados foi realizada por meio de um questionário (autoaplicado) contendo informações sociodemográficas, nutricional, comportamentais, de saúde e ocupacionais. Foram realizadas análises bruta e ajustada da associação entre os níveis de atividade física e os desfechos. Resultados: A atividade física de lazer foi positivamente associada com o tempo de sono durante a semana (β=22,2; p=0,006) e no fim de semana (β=31,3; p=0,007) e a de deslocamento esteve correlacionada negativamente com o tempo de sono no fim de semana (β=-44,5; p<0,001). Conclusão: A atividade física de lazer esteve relacionada ao aumento na duração do sono durante a semana e nos fins de semana. Ao contrário, a atividade física de deslocamento associou-se à redução no tempo de sono no fim de semana. Mais estudos são necessários, principalmente de intervenção, para melhor compreender a relação entre os domínios da atividade física e o tempo de sono em trabalhadores. Palavras-chave | sono; saúde do trabalhador; atividade motora.

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