BackgroundBrazil is currently experiencing a nutrition transition: the displacement of traditional diets with foods high in saturated fat, sodium, and cholesterol and an increase in sedentary lifestyles. Despite these trends, our understanding of child obesity in Brazil is limited. Thus, the aims of this study were (1) to investigate the current prevalence of overweight and obesity in a large sample of children and adolescents living in São Paulo, Brazil, and (2) to identify the lifestyle behaviors associated with an increased risk of obesity in young Brazilians.MethodsA total of 3,397 children and adolescents (1,596 male) aged 7-18 years were randomly selected from 22 schools in São Paulo, Brazil. Participants were classified as normal weight, overweight, or obese based on international age- and sex-specific body mass index thresholds. Selected sociodemographic, physical activity, and nutrition behaviors were assessed via questionnaire.ResultsOverall, 19.4% of boys and 16.1% of girls were overweight while 8.9% and 4.3% were obese. Two-way analysis of variance revealed that the prevalence of overweight and obesity was significantly higher in boys and in younger children when compared to girls and older children, respectively (P < 0.05 for both). Logistic regression analysis revealed that overweight was associated with more computer usage, parental encouragement to be active, and light soft drink consumption after controlling for differences in sex, age, and parental education (P < 0.05 for all). Conversely, overweight was associated with less active transport to school, eating before sleep, and consumption of breakfast, full-sugar soft drinks, fried food and confectionery (P < 0.05 for all).ConclusionsOur results show that obesity in São Paulo children and adolescents has reached a level equivalent to that seen in many developed countries. We have also identified three key modifiable factors related to obesity that may be appropriate targets for future intervention in Brazilian youth: transport mode to school, computer usage, and breakfast consumption.

ObjectiveThis study sought to analyze the relationship between the components and aggravations of body composition (obesity, sarcopenia, and sarcopenic obesity) and bone mineral density in elderly subjects aged ≥80 years.MethodsA cross-sectional study design was utilized to assess 128 subjects aged between 80 and 95 years. Body composition and bone mineral density were measured by dual energy X-ray absorptiometry. Gait speed was assessment by walking test. The statistical analyses included Spearman's correlation, one-way analysis of variance, the chi-squared test, and binary logistic regression analysis.ResultsThe elderly subjects with sarcopenia had lower bone mineral density compared to the obesity group, with higher risk for presence of osteopenia/osteoporosis in the spine (OR: 2.81; CI: 1.11–7.11) and femur (OR: 2.75; CI: 1.02–7.44). Obesity was shown to be a protective factor for osteopenia/osteoporosis in the spine (OR: 0.43; CI: 0.20–0.93) and femur (OR: 0.27; CI: 0.12–0.62).ConclusionIt was found that lean mass is more directly related to bone mineral density (total, femur, and spine) and sarcopenia is associated with osteopenia/osteoporosis. Obesity represents a possible protective factor for osteopenia/osteoporosis in elderly subjects aged 80 years and over.

Breast cancer survivors have changes in their body composition and in handgrip strength six months after surgery; however, the interaction between the type of surgery and its impact is unclear. Furthermore, women who developed lymphedema in this period showed more significant changes in the body composition, but they were not enough to cause impairment in handgrip strength.

Modelo do estudo: Estudo transversal. Objetivo: Analisar a associação entre a presença de fatores de risco cardiovascular (FRC) e a capacidade funcional de idosos longevos. Materiais e Método: A amostra foi composta por 91 idosos com idade entre 80 e 90 anos (83,0±2,3 anos), sendo 60 mulheres (82,9±2,1 anos) e 31 homens (83,2±2,6 anos) residentes na cidade de Presidente Prudente/SP. Os FRC analisados foram: Hipertensão Arterial (HA) e excesso de gordura corporal (total e tronco). A presença de Hipertensão foi verificada por meio do questionário auto-referido baseado no Standard Health Questionnaire(SHQ). A avaliação da gordura corporal foi feita pela absorpiometria de dupla energia de raios-X (DEXA) e a capacidade funcional foi avaliada por meio dos testes funcionais (equilíbrio estático, velocidade usual de caminhada e força de membros inferiores). Para tratamento estatístico realizou-se o teste qui-quadrado, o software utilizado foi SPSS (13.0) e o nível de significância estabelecido foi de 5%. Resultados: Os idosos com a presença de HA e excesso de %GC apresentaram menor desempenho no teste de membros inferiores (83,3% menor e 16,7% maior), p=0,011 comparados aqueles com apenas um FCR. As idosas com a presença de HA e excesso de %GTron também apresentaram menor desempenho no mesmo teste (80,6% menor e 19,4% maior), p=0,018 e no teste de velocidade de caminhada (80,6% menor e 19,4% maior), p=0,034. Conclusão: A HA e o excesso de gordura corporal (total e tronco) agregados são FRC, que estão associados à redução da capacidade funcional de idosos longevos.

ObjectiveTo analyze which abnormalities in body composition (obesity, sarcopenia or sarcopenic obesity) are related to reduced mobility in older people aged 80 years and older.MethodsThe sample included 116 subjects aged 80 years and older. The body composition was measured using dual-energy X-ray absorptiometry (DXA) and mobility was assessed by motor tests. The χ2 test was used to analyze the proportion of older people with sarcopenia, obesity and sarcopenic obesity based on sex as well as to indicate an association between obesity, sarcopenia, sarcopenic obesity and mobility. Binary logistic regression, adjusted for the variables (sex and osteoarticular diseases), was used to express the magnitude of these associations. One-way analysis of variance was used to compare the mobility of four groups (Normal, Obesity, Sarcopenia and Sarcopenic Obesity).ResultsThe Sarcopenia Group had lower performance in the lower limbs strength test and in sum of two tests compared with Obesity and Normal Groups. Older people with sarcopenia had higher chance of reduced mobility (OR: 3.44; 95%CI: 1.12-10.52).ConclusionOlder people aged 80 years and older with sarcopenia have more chance for reduction in mobility.

Article based on the master' s thesis of VR SANTOS, intitled "Capacidade funcional, composição corporal e condições de saúde de idosos longevos". Universidade Estadual Paulista; 2012.Factors associated with sarcopenia in subjects aged 80 years and over Fatores associados à sarcopenia em idosos longevos A B S T R A C T ObjectiveTo analyze whether sarcopenia is associated with sociodemographic factors and chronic noncommunicable diseases in adults aged 80 years and older. MethodsThe sample consisted of 120 adults aged 80 to 95 years (83.4±2.9 years) from the city of Presidente Prudente (São Paulo, Brazil), of which 76 were females (83.4±3.0 years) and 44 were males (83.4±2.6 years). The study sociodemographic and epidemiological factors were: age stratum, gender, marital status, education level, chronic noncommunicable diseases, ethnicity, and nutritional status. Body composition was determined by Dual-Energy X-Ray Absorptiometry and sarcopenia was identified by the appendicular lean mass ratio (upper limb lean mass + lower limb lean mass [kg]/height [m] 2 ). The Chi-square test analyzed whether sarcopenia was associated with sociodemographic and epidemiological factors and binary logistic regression expressed the magnitude of the associations. The data were treated by the software Statistical Package for the Social Sciences (17.0) at a significance level of 5%. ResultsThe factors associated with sarcopenia were gender, age, nutritional status, and osteopenia/osteoporosis.

To identify the most frequent cardiovascular risk factors (CRFs) in Brazilian participants. Sample of 113 individuals aged 80 to 95 years (83.4 + 2.9 years), of both sexes, from Presidente Prudente, São Paulo state. Waist circumference (WC), body mass index, percentage of total body fat (% BF), hypertension, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides, and glucose were used for characterization of risk factors. The chi-square test was used to assess proportions of risk factors and Student's t test to compare the results between the sexes. High prevalence of risk factor was observed, mainly hypertension (67.3%) and % BF (79.6%). Male participants presented higher weight, height, and WC (p < .001), and female participants, higher TC and % BF (p < .001). Only 7.1% of male and 4.2% of female participants showed no risk factors, and 71.3% of male and 85.9% of female participants had three or more. The participants presented a high prevalence of CRFs, particularly percentage of body fat and hypertension, and, in addition, female participants also presented TC.

RESUMOIntrodução: Estudos populacionais utilizam, geralmente, métodos indiretos de estimativa do nível de atividade física (NAF) da população. Entretanto, o erro de medida, principalmente quando se trata da população idosa, é grande. Estudos nacionais que usam medidas objetivas são escassos. Objetivo: Este estudo buscou descrever o perfil de prática de atividade física (AF) da população idosa do município de São Paulo utilizando--se acelerometria. Métodos: Este trabalho faz parte do estudo SABE, desenvolvido na capital do Estado de São Paulo e analisou os dados de 568 idosos (≥ 65 anos). O acelerômetro da marca Actigraph foi utilizado durante 3 dias consecutivos. Os idosos foram classificados segundo o NAF de acordo com as recomendações atuais de AF. O NAF foi descrito (média e IC 95%) segundo sexo e grupos etários (< 70 anos, 70 a 79 anos e ≥ 80 anos). As proporções de idosos em cada grupo de NAF foram descritas em termos relativos (%). As diferenças entre os grupos foram estimadas utilizando-se o teste generalizado de igualdade entre médias de Wald. Resultados: Os idosos considerados sedentários representaram 63,1% (48,3% dos homens e 71,7% das mulheres) e apresentaram média de idade maior; houve prevalência de 25,7% dos homens e 8,13% das mulheres classificados como fisicamente ativos, o que corresponde a apenas 14,6% do total de idosos. Os idosos gastam, em média, 12,6 (IC 95% 10,6 -13,7) minutos por dia em atividades físicas consideradas de intensidade moderada e/ou vigorosa. A proporção de idosos fisicamente ativos é menor quanto maior for a idade. Conclusão: O NAF da população idosa do Município de São Paulo é baixo e considerado insuficiente, principalmente para o sexo feminino. Assim, houve maior proporção de idosos considerados sedentários e insuficientemente ativos quando comparados aos ativos.Descritores: acelerometria; idosos; atividade motora. (< 70 years, 70-79 years and ≥ 80 years). the proportion of elderly people in each Pal group was described in relative terms (%) ABSTRACT introduction: Population studies generally use indirect methods to estimate the physical activity level (Pal