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BACKGROUND: To identify and appraise the effectiveness of the 5A-counseling-model-based interventions on indicators of physical activity in adults. METHODS: A systematic review was conducted from systematic searches in Embase, Lilacs, Pubmed, Scielo, Scopus, Sportdiscus and Web of Science, involving studies published from its inception until May 2022. To avoid potential losses, searches also were made in Google Scholar and in reference lists. The assessment of studies, data extraction, and synthesis were carried out independently by two researchers. RESULTS: Four studies composed the synthesis, which involved people with an average age between 40 and 55 years, most of the samples being women. It was observed that counseling was carried out in conjunction with other strategies, such as drawing up an action plan, sending text messages, and offering educational material. Only one study showed a statistically significant difference between the intervention and control groups in the "daily number of steps" indicator. CONCLUSIONS: Based on available studies, 5A-counseling-model-based interventions did not reflect significant findings in relation to physical activity. However, given the potential of the model, future studies are recommended with a better description of the strategies, as well as a more robust methodology, to strengthen the evidence.
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OBJECTIVE: To describe changes in total and central adiposity and body fat distribution in children over a 5-year period by investigating variations in BMI, waist circumference (WC), waist-to-height ratio (WHtR) and skinfold thicknesses (SFT). DESIGN: A school-based sample of children from 2nd to 5th grades of elementary schools participated in two cross-sectional studies in 2002 (n 2936) and 2007 (n 1232). SETTING: Public and private schools of Florianopolis, Brazil. SUBJECTS: Schoolchildren aged 7-10 years had their weight, height, WC and SFT measured according to standard procedures. Body fat distribution was assessed by triceps, subscapular, suprailiac and medial calf skinfold measurements. Changes in BMI, WC, WHtR and SFT were analysed, adjusting for type of school and monthly family income. RESULTS: Adjusted mean differences between 2002 and 2007 for BMI and WC were always positive and of similar magnitude between boys and girls. However, a statistically significant increase was observed only for BMI (raw and Z-score values) in boys. WHtR remained stable in both sexes. Adjusted median values for SFT also increased in boys and girls, except for triceps skinfold. BMI, WC and SFT tended to increase across age classes in both sexes. The relative change observed for the median central skinfolds (subscapular and suprailiac) was greater than that of peripheral skinfolds (triceps and medial calf). CONCLUSIONS: The subcutaneous adipose tissue (SFT) appeared to increase at a faster rate than total adiposity (BMI). The increase in central SFT indicates that the relative change is due primarily to a rise in central adiposity.
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Adiposidad , Distribución de la Grasa Corporal , Índice de Masa Corporal , Peso Corporal , Brasil , Niño , Estudios Transversales , Femenino , Humanos , Masculino , Obesidad Abdominal , Grosor de los Pliegues Cutáneos , Grasa Subcutánea , Circunferencia de la Cintura , Relación Cintura-EstaturaRESUMEN
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, hypercholesterolemia, type 2 diabetes, obesity, and clustering of chronic diseases) in Brazilian workers. METHODS: Cross-sectional study conducted from 2006 to 2008 in 24 Brazilian federal units (n = 47,477). A questionnaire was applied. Descriptive statistics, binary and multinomial logistic regressions were used. RESULTS: Magnitude of association with chronic diseases varied greatly across domains and gender. Sedentariness at work was the most consistent behavior associated with chronic diseases, especially in men (OR hypertension = 1.10, 95% CI: 1.01-1.20; OR hypercholesterolemia = 1.34, 95% CI: 1.21-1.48; OR obesity = 1.27, 95% CI: 1.15-1.41; OR1 chronic disease = 1.17, 95% CI: 1.09-1.26; OR ≥ 2 chronic diseases = 1.61, 95% CI: 1.46-1.78) compared with women (OR hypercholesterolemia = 1.15, 95% CI: 1.01-1.31; OR obesity = 1.24, 95% CI: 1.04-1.48). LTPI was associated with all diseases in men (except type 2 diabetes), but only with obesity in women. CONCLUSION: Adverse health consequences may be differently associated according to behavior domain and gender. Sedentary work and LTPI were consistently associated with chronic disease in Brazilian workers, especially in men.
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Enfermedad Crónica/epidemiología , Conductas Relacionadas con la Salud , Actividades Recreativas , Conducta Sedentaria , Adulto , Índice de Masa Corporal , Brasil/epidemiología , Estudios Transversales , Diabetes Mellitus Tipo 2/epidemiología , Femenino , Humanos , Hipercolesterolemia/epidemiología , Hipertensión/epidemiología , Modelos Logísticos , Masculino , Persona de Mediana Edad , Obesidad/epidemiología , Salud Laboral , Factores de Riesgo , Encuestas y Cuestionarios , Televisión/estadística & datos numéricos , Transportes , TrabajoRESUMEN
BACKGROUND: The negative health consequences of childhood overweight/obesity (OW/OB) are well known. Therefore, an accurate monitoring of the OW/OB prevalence is essential. Anthropometry is the most practical and cost-effective method for nutritional status evaluation. AIM: To describe trends in the nutritional status among 7-10-year-old children by investigating changes in the prevalence of stunting, thinness, overweight, obesity, risk and excess abdominal adiposity, and to study changes in height-for-age, body mass index (BMI) and waist circumference (WC). SUBJECTS AND METHODS: A school-based sample of 7-10-year-old children participated in two cross-sectional studies in 2002 (n = 2936) and 2007 (n = 1232) in Florianopolis, southern Brazil. Prevalence of stunting, risk and excess abdominal adiposity and changes in the distribution of height-for-age, BMI-for-age, WC-for-age z-scores were evaluated. Three BMI-based references were used to define the prevalence of thinness, overweight and obesity. RESULTS: Between 2002-2007, the prevalence of stunting, thinness, obesity and excess abdominal adiposity remained stable, whereas overweight (including obesity) increased 10-23% in boys and 18-21% in girls, depending on the BMI reference used. The risk of abdominal adiposity increased in boys, but not in girls. No significant change was observed in mean height, BMI, WC-for-age z-scores. CONCLUSIONS: This study identified a potential levelling off in the prevalence of obesity and excess abdominal adiposity, but a continuing increase in the prevalence of overweight.
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Adiposidad , Sobrepeso/epidemiología , Abdomen/anatomía & histología , Estatura , Índice de Masa Corporal , Brasil/epidemiología , Niño , Estudios Transversales , Femenino , Humanos , Masculino , Estado Nutricional , Obesidad/epidemiología , Prevalencia , Factores de Riesgo , Delgadez/epidemiología , Circunferencia de la CinturaRESUMEN
BACKGROUND: Information and communication technology (ICT) has been used with increasing frequency for the assessment of diet and physical activity in health surveys. A number of Web-based questionnaires have been developed for children and adolescents. However, their usability characteristics have scarcely been reported, despite their potential importance for improving the feasibility and validity of ICT-based methods. OBJECTIVE: The objective of this study was to describe the usability evaluation of the Consumo Alimentar e Atividade Física de Escolares (CAAFE) questionnaire (Food Consumption and Physical Activity Questionnaire for schoolchildren), a new Web-based survey tool for the self-assessment of diet and physical activity by schoolchildren. METHODS: A total of 114 schoolchildren aged 6 to 12 years took part in questionnaire usability testing carried out in computer classrooms at five elementary schools in the city of Florianopolis, Brazil. Schoolchildren used a personal computer (PC) equipped with software for recording what is on the computer screen and the children's speech during usability testing. Quantitative and qualitative analyses took into account objective usability metrics such as error counts and time to complete a task. Data on the main difficulties in accomplishing the task and the level of satisfaction expressed by the children were assessed by the observers using a standardized form and interviews with the children. Descriptive statistics and content analysis were used to summarize both the quantitative and the qualitative aspects of the data obtained. RESULTS: The mean time for completing the questionnaire was 13.7 minutes (SD 3.68). Compared to the children in 2nd or 3rd grades, those in 4th or 5th grades spent less time completing the questionnaire (median 12.4 vs 13.3 minutes, P=.022), asked for help less frequently (median 0 vs 1.0 count, P=.005), had a lower error count (median 2.0 vs 8.0 count, P<.001), and obtained a higher overall performance score (median 73.0 vs 68.0, P=.005). Children with a PC at home spent less time completing the questionnaire (median 12.3 vs 14.9 minutes, P<.001), had a lower overall error count (median 2.0 vs 9.0 count, P=.03), and had a higher performance score (median 72.0 vs 64.0, P=.005) compared to the children without a PC at home. The most common difficulty in completing the questionnaire was in using the scroll bar. The majority of children reported a positive evaluation (liked a lot or liked) for the four design elements, which were evaluated. CONCLUSIONS: The results of the present study provided feedback to improve the final version of the CAAFE questionnaire. Quantitative data showed minor errors and system failures, while qualitative data indicated that, overall, the children enjoyed the CAAFE questionnaire. Grade levels and PC use must be taken into account in Web-based tools designed for children.