Tempo de prática de atividade física no lazer como fator discriminatório da ausência de excesso de peso corporal / Physical activity time at leisure as discriminatory factor in the absence of excess body weight

O objetivo deste estudo foi selecionar, por meio de três inquéritos transversais com universitários, os melhores pontos de corte dos minutos de prática de atividade física aeróbica no lazer, de intensidade moderada a vigorosa, como discriminador da ausência do excesso de peso corporal. Os inquéritos foram realizados nos anos de 2010, 2012 e 2014, com estudantes de uma universidade do estado da Bahia, com média etária de 24 anos (dp = 5,8) e 51,5% do sexo feminino. A faixa de peso corporal recomendável foi (índice de massa corporal de 18,5 kg/m2 a 24,9 kg/m2) empregada como categoria de classificação e a variável testada foram os minutos de atividades físicas aeróbicas de intensidade moderada a vigorosa praticadas no lazer. As estimativas dos pontos de corte foram analisadas pelas curvas ROC (Receiver Operating Characteristic), para todos os universitários e estratificadas para as categorias das variáveis sociodemográficas e dos hábitos alimentares. O número de participantes em cada inquérito foi de 947 em 2010, 940 em 2012 e 915 em 2014. A prevalência de peso recomendável foi de 73,1% e a média dos minutos de atividades físicas no lazer foi de 270,1 (dp: 731,4; mediana de 0; variação interquartil: 360). De modo geral, a área sob a curva ROC foi de 0,56 (IC95%: 0,54 ­ 0,58), com ponto de corte de 150 minutos. A capacidade dos minutos de atividades físicas no lazer para a predição da ausência de excesso de peso corporal foi baixa e o ponto de corte que melhor discriminou essa característica foi de 150 minutos por semana.

The aim of this study was to select, through of the analysis of three cross-sectional surveys with college, the best cutoffs of minutes of practice of aerobic physical activity during leisure-time in moderate to vigorous intensities, as discriminator of the absence of excess body weight (overweight and obesity). The surveys were realized in the years of 2010, 2012 and 2014 in university from state Bahia, with mean age of 24 years (SD = 5,8) and 51.5% of female. The recommended body weight range (body mass index of 18.5 kg/m2to 24.9 kg/m2) was used as classification category and the variable tested were the minutes of physical activity in leisure, aerobic, in moderate to vigorous intensities. Estimates of cutoffs were analyzed by ROC (Receiver Operating Characteristic) curves, general and stratified of according categories of sociodemographic and eating habits variables. The number of participants in each surveys were: 947 in 2010, 940 in 2012 and 915 in 2014. The prevalence of recommended body weight was 73.1% and the average minutes of physical activity in leisure-time was 270.1 (SD: 731.4; median: 0; interquartile range: 360). The best cut-off points, in general, was 150 minutes (ROC: 0.56; CI95%: 0.54 ­ 0.58). The capacity of leisure-time physical activities minutes to predict the absence of excess body weight was low and the cutoff better discriminated that characteristic was 150 minutes per week.

Validade de constructo do módulo do questionário ISAQ-A para mensurar barreiras para a prática de atividades físicas no lazer de universitários / Construct validity of module of ISAQ-A questionnaire to measure leisure-time physical activity barriers of undergraduate

O objetivo deste estudo foi analisar a validade de constructo e a consistência interna do módulo do questionário ISAQ-A para mensurar barreiras para a prática de atividades físicas no lazer de universitários, tendo como base a proposta de agrupamento em três fatores. Foi realizado um estudo transversal com amostra de 970 universitários de uma instituição de ensino superior do Estado da Bahia de média etária de 23,5 anos (±5,2 anos) e 54,5% do sexo feminino. O módulo do questionário ISAQ-A mensura 12 tipos de barreiras, com a possibilidade de resposta até três opções, por ordem de importância. Para analisar a validade de constructo, considerou-se a proposta de agrupamento das barreiras em três fatores: barreiras pessoais, barreiras situacionais e barreiras de recursos/oportunidades, mediante a análise fatorial confirmatória (AFC). A consistência interna foi avaliada por meio do alfa de Cronbach's. A consistência interna geral foi de 0,95, e entre os fatores, variou de 0,86 para o fator situacional a 0,90 para o fator de recursos/oportunidades. Os resultados da AFC mostraram adequação da proposta de classificação das barreiras em três fatores (Comparative Fit Index = 0,96; Standardized Root Mean-Square Residual= 0,03; Tucker-Lewis Indices = 0,95; Normalized Fit Indices = 0,96). Conclui-se que o módulo do questionário ISAQ-A para a mensuração de barreiras para a prática de atividades físicas no lazer de universitários apresentou níveis adequados de validade de constructo e de consistência interna.

The objective of this study was to analyze the construct validity and internal consistency of the module of ISAQ-A (Indicadores de Saúde e Qualidade de Vida em Acadêmicos) questionnaire to measure leisure-time physical activity barriers of undergraduate, based on the proposal of grouping in three factors. A cross- sectional study was carried out with a sample of 970 undergraduate from a higher education institution in the state of Bahia with a mean age of 23.5 years (±5.2 years) and 54.5% female. The ISAQ-A questionnaire measures 12 types of barriers, with the possibility of answering up to three options, in order of importance. To analyze the construct validity, we considered the proposal of grouping the barriers into three factors: personal barriers, situational barriers and resources/opportunities barriers, through confirmatory factor analysis (CFA). The internal consistency was assessed using Cronbach's alpha. The overall internal consistency was 0.95 and for the factors ranged from 0.86 for situational factor to 0.90 for resource/opportunity factor. The CFA results showed the adequacy of the proposed classification of barriers in three factors (Comparative Fit Index = 0.96; Standar-dized Root Mean-Square Residual = 0.03; Tucker-Lewis Indices = 0.95; Normalized Fit Indices = 0.96). It was concluded that the module of the ISAQ-A questionnaire for the measurement of leisure-time physical activity barriers of undergraduate, presented adequate levels of construct validity and internal consistency.

Apoio Matricial e a atuação do Profissional de Educação Física do Núcleo de Apoio à Saúde da Família / Matrix Support and the intervention of Professional Physical Education in the Support Nucleus Family ́s Health

O estudo analisou os fatores associados as práticas de Apoio Matricial realizadas pelos Profissionais de Educação Física do Núcleo de Apoio à Saúde da Família (NASF) no Brasil e segundo as suas regiões. Foi realizado um estudo exploratório e descritivo com 296 profissionais de Educação Física credenciados nas equipes do NASF do Brasil. A amostra foi proporcional às regiões do Brasil e modalidades de NASF, sendo realizada entrevista telefônica entre julho a setembro de 2011. Os componentes de Apoio Matricial foram definidos a partir do modelo teórico do trabalho,foram eles: educação em saúde, educação permanente, controle social e clínica ampliada. Os componentes isolados e suas combinações foram associa-das as variáveis pessoais e de condições de trabalho dos profissionais.Para análise dos dados foi utilizado os testes de Regres-são Logística Binária, nas análises brutas e ajustadas,adotando significância de 5%.Os resultados apontaram os profissionais mais jovens(OR = 4,8; IC95%:1,2-18,0), os integrantes da equipe do NASF desde a implantação(OR = 3,9, IC95%: 1,1-14,0) e aqueles que receberam capacitação (OR = 2,6; IC95%:1,3-5,4) realizaram um maior número de atividades simultâneas.Os indicadores relacionados a condições de trabalho estáveis e a capacitação pela gestão de saúde ofereceram maior chance de os profissionais realizarem a prática do apoio matricial. Investimentos na qualificação dos profissionais podem reduzir as divergências na atuação dos profissionais de Educação Física do NASF nas diferentes regiões do Brasil.

The study analyzed the factors associated with the Matrix Support practices performed by the Physical Education Professionals at the Support Center for Family Health (NASF) in Brazil and according to their regions. Was carried out exploratory and descriptive study with 296 professionals of the Physical Education teams accredited of the NASF of Brazil. A sample was proportional regions of Brazil and modalities of NASF and selected by telephone interview, applied in the period from July to September 2011. The indicators of Matrix Support were defined from the theoretical work model: Health Education, Continuing Education, Social Control and Expanded Clinic. The isolated components and their combinations were associated personal and professional working conditions variables. The associations were to estimate through multinomial and binary logistic regression in crude and adjusted analysis, adopting a 5% significance. The results showed that younger professionals (OR: 4.8; CI95%: 1.2-18.0), the members the NASF team since implementation (OR: 3.9; CI%: 1.1-4.0) and those that received capacitation (OR: 2.6; CI%: 1.3-5.4) realized a higher numbers of simultaneous activities. The indicators related the stable working conditions and the training for health management were associated with higher chances of achieving of matrix support. Investment in the training of professionals can reduce the differences in the perfor-mance of professional of Physical Education of NASF in different regions of Brazil.

[Risk behaviors to health in Brazilian college students]. / Condutas negativas à saúde em estudantes universitários brasileiros.

The scope of this study was to estimate the prevalence and associated factors of lower levels of leisure-time physical activities, insufficient consumption of fruit and vegetables, alcohol consumption and smoking among college students from a public university in the northeastern region of Brazil. The sample was stratified in accordance with the academic program, period of study and year of admission to the university. The negative health-related behaviors were analyzed in relation to socio-demographic and program affiliation indicators by means of Prevalence Ratios. The most prevalent negative health-related behaviors were insufficient consumption of fruit and vegetables, lowers levels of leisure-time physical activities and alcohol consumption. Insufficient consumption of fruit, smoking and alcohol consumption were more prevalent among men. Furthermore, insufficient consumption of vegetables was higher among younger, unmarried, men after three years at the university, whose fathers failed to complete elementary school. Lower levels of leisure-time physical activities were higher among older women, who evaluated relationships with colleagues negatively and whose fathers failed to complete elementary school.

MONISA study: characteristics and methodological aspects.

The objective is to present the characteristics and methodological procedures adopted in the MONISA Study (Surveillance of health and quality of life indicators of college students). This is a prospective, panel type study, with biannual surveys of representative samples of undergraduate students at a public university in the State of Bahia, Brazil. This study carried out five surveys, totaling 10 years of monitoring (2010-2018). The sample is stratified and proportional to the courses, study period (day and night) and year of attending university. Finally, college students are selected at each stratum, through the registration list in alphabetical order. To obtain the information is used a structured questionnaire with the following sections: socio-demographic indicators, indicators of lifestyle and health, eating habits and body weight control, physical activity and other leisure options, preventive behaviors, and indicators environment and learning conditions. The novel aspects of this study may help in clarifying possible trends related to the health of Brazilian college students and to subsidize policies and programs or projects to promote health and quality of life in local, organizational level.

Prevalence and associated factors with body image dissatisfaction among adults in southern Brazil: a population-based study.

We investigated the prevalence of body image dissatisfaction (BID) and associated factors in Florianopolis, Brazil. BID was analyzed in a sample (N=1720) of adults through the Figure Rating Scale. The independent variables were sociodemographic factors, health behaviors, and morbidities. A multinomial logistic regression analysis was used. More men (14.2%) than women (6.1%) presented BID by being lighter than ideal (LI). Conversely, more women (66.6%) than men (46.3%) showed BID by being heavier than ideal (HI). BID by being HI was higher among older women, those with high BMI and those with a partner. In men, lower BMI and the presence of common mental disorders were associated with BID due to being LI. Advanced ages, alcohol abuse, physical inactivity, and obesity were associated with BID due to being HI. We must consider different public health interventions for men and women to reduce BID in Brazilian adults.

Factors associated with central obesity in adults from Florianópolis, Santa Catarina: a population based-study.

OBJECTIVE: To estimate the prevalence of central obesity and its association with socio-demographic factors and health-related behaviors among adults from Florianópolis, State of Santa Catarina, Southern Brazil. METHODS: A cross-sectional population-based study was carried out in a sample of 1,720 adults between 20 to 59 years of age, residents in the urban area of the city. The outcome was the central obesity which was defined as a waist-height ratio > 0.50. Unadjusted and adjusted models were performed by using Poisson regression allowing estimation of the Prevalence Ratio (PR). All analyses were stratified by sex. RESULTS: The prevalence of central obesity was 50.5% (95% CI: 46.6-54.4) among men and 38.9% (95% CI 34.4-43.5) among women. In the adjusted analysis, central higher prevalence of obesity was observed in women aged 50 to 59 years and those who were living with a partner; lower prevalences were observed among women with > 12 years of study (PR: 0.63; 95% CI: 0.47-0.85) and among those with higher income (PR: 0.64; 95% CI: 0.47-0.86). Among men, a higher prevalence of central obesity was associated with ages 50 to 59 years and among those who were living with a partner, while a lower prevalence was identified in those in the highest income group. CONCLUSION: The prevalence of central obesity was high in the population studied. Demographic and socioeconomic factors were strongly associated with central obesity in both sexes. The knowledge of factors associated with central obesity may help the implementation of health interventions in order to prevent this core issue in Public Health.

[Stages of behavioral change regarding physical activity in students from a Brazilian town]. / Estágios de mudanças de comportamento para atividade física em estudantes de uma cidade do Brasil.

OBJECTIVES: Verifying the association between stages of behavioural change (SBC) for physical activity (PA) and socio-demographic factors, behavioural factors and PA barriers in students from a small town in Brazil. MATERIALS AND METHODS: This cross-sectional study's representative sample was formed by 281 high school students from Simão Dias, Sergipe State, in Brazil, having 17.4 (± 1.98) mean age. Socio-demographic information was collected via a self-administered instrument (gender, age, school grade, economic level (EL) and family-head's EL), SBC for PA, behavioural factors (smoking, alcohol and stress) and PA barriers. A hierarchical model was used, involving Poisson regression with respective confidence intervals; significance level was set at 5 % for all analysis. RESULTS: 65.8 % of the participating students were classified in stages referring to inactive physical behaviour. Being female had the probability of presenting 1.37 times higher inactive behaviour (1.14-1.65 95 %CI) when compared to being male in the final regression model; having a low EL remained a risk factor, compared to medium EL students (PR=1.41; 1.15-1.72 95 %CI). CONCLUSION: These findings may prove useful for developing health promotion programmes in school environments, paying special attention to female and low-EL students.