Publications by authors named "Diego A Silva"

The aim of this study was to evaluate the effect of possible endocrine disruptors in surface and wastewater using a cell proliferation assay in an estrogen-responsive cell line (MCF-7). This study was conducted in the Sinos River (Brazil). The residual water was collected from a Pilot Treatment Plant (using Typha domingensis) and surface waters of the Luis Rau stream, the Sinos River, and the Water Treatment Station (WTS).

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A polysaccharide was isolated from the exudate of a buriti tree trunk (). The molecular structure, thermal stability, morphology, crystallinity, and elemental composition of the product were investigated through spectroscopic techniques, such as Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR H and C), and energy-dispersive X-ray spectroscopy (EDS); thermogravimetric analysis (TG), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and X-ray diffraction (XRD). In addition to NMR molecular modeling studies, were performed to confirm the H and C chemical shifts to Gal and Xyl conformers.

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Article Synopsis
  • * Researchers used camera traps to gather a comprehensive data set of 154,123 records from 317 species of mammals, birds, and reptiles across eight Amazonian countries.
  • * This extensive data set facilitates new ecological research on the impacts of habitat loss and climate change in the Amazon, and its use is encouraged with proper citation.
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Amazonia has the richest primate fauna in the world. Nonetheless, the diversity and distribution of Amazonian primates remain little known and the scarcity of baseline data challenges their conservation. These challenges are especially acute in the Amazonian arc of deforestation, the 2500 km long southern edge of the Amazonian biome that is rapidly being deforested and converted to agricultural and pastoral landscapes.

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Background: Bone parameters are influenced by multiple factors. However, when comparing sports, few studies have considered the simultaneous interference of these factors in bone parameters. The aim of this study is to compare bone mineral density (BMD) and bone mineral content (BMC) between university athletes from different sports, according to sex.

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Background: The aim of this study was to compare cell integrity indicators according to the playing position in university indoor football athletes.

Methods: The sample consisted of 34 university athletes (20 female and 14 male). Dependent variables were cell integrity indicators: total body water (TBW), intracellular water (ICW), extracellular water (ECW), ECW/ICW ratio, body cell mass (BCM), ECW/BCM ratio, phase angle (PhA), resistance (R), Xc (reactance) and impedance (Z), evaluated by the electrical bioimpedance method.

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Background: This study investigated the comparability between air displacement plethysmography (ADP), dual-energy X-ray absorptiometry (DXA), and bioelectrical impedance analysis (BIA) methods for body composition assessment and their correlations with physical performance in rugby players.

Methods: Nineteen male elite players participated in the study. ADP, DXA, and BIA were used to assess fat-mass and fat-free mass.

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The persistent high deforestation rate and fragmentation of the Amazon forests are the main threats to their biodiversity. To anticipate and mitigate these threats, it is important to understand and predict how species respond to the rapidly changing landscape. The short-eared dog is the only Amazon-endemic canid and one of the most understudied wild dogs worldwide.

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We analyzed the discriminatory capacity of anthropometric indicators for body fat in children and adolescents. This systematic review and meta-analysis included cross-sectional and clinical studies comprising children and adolescents aged 2-19 y that tested the discriminatory value for body fat measured by anthropometric methods or indexes generated by anthropometric variables compared with precision methods in the diagnosis of body fat [dual-energy X-ray absorptiometry (DXA), computed tomography, air displacement plethysmography (ADP), or MRI]. Five studies met the eligibility criteria and presented high methodologic quality.

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Background: Very few studies have comprehensively analyzed the physical activity of children and adolescents in Brazil. The purpose of this article is to show the methodology and summarize findings from the first Brazilian Report Card on Physical Activity for Children and Youth.

Methods: Three Brazilian research institutions coordinated the activities to develop the Brazilian 2016 Report Card.

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Objective: The objective was to evaluate the effects of BMI and waist circumference change on the cumulative incidence of high blood pressure levels (HBP) among adults.

Methods: Prospective longitudinal study in Southern Brazil, with a sample evaluated in 2009 (n = 1720) and 2012 (n = 1213). The incidence of HBP was estimated using measured values of systolic and diastolic arterial pressure (≥140/90 mmHg).

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Background: The aim of this study is to investigate the effects of abdominal and general obesity on periodontal outcomes in a population-based cohort of Brazilian adults.

Methods: Abdominal and general obesity were assessed in the years 2009 (n = 1,720) and 2012 (n = 1,222). For abdominal obesity, a dichotomous variable was created: 1) eutrophic/lost weight or 2) obese/gained weight.

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The aim was to estimate the prevalence of stages of change for physical activity and associated sociodemographic factors in students. The sample consisted of 942 students (44.7% males, 55.

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Objective: To evaluate the sensitivity and specificity of different cutoff points of body mass index for predicting overweight/obesity according to body fat values estimated by DEXA among Brazilian adolescents.

Methods: Cross-sectional study including 229 male adolescents aged 10-15 years, in which body adiposity and anthropometric measures were assessed. Nutritional status was classified by BMI according to cutoff points described in scientific literature.

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Introduction: The aim of this study was to investigate the simultaneous presence of risk factors for non-communicable diseases and the association of these risk factors with demographic and economic factors among adolescents from southern Brazil.

Methods: The study included 916 students (14-19 years old) enrolled in the 2014 school year at state schools in São José, Santa Catarina, Brazil. Risk factors related to lifestyle (i.

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Objective: To analyze the associations between sex and age with behaviour related to physical activity practice and sedentary behaviour in children and adolescents.

Methods: A cross-sectional study with 480 (236 boys) subjects enrolled in a public school in the city of Londrina, in the south of Brazil, aged 8-17 years. Measures of physical activity, sports practice and screen times were obtained using the Physical Activity Questionnaire for Older Children.

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The scope of this article was to assess the association between dietary intake, physical activity and socioeconomic factors associated with body fat percentage in 7 to 14-year-old schoolchildren. It is a cross-sectional study with a probability sample of 2,481 students from public and private schools in Florianópolis, Santa Catarina, Brazil. Body fat percentage was investigated by measuring triceps and subscapular skin folds.

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Objective: The aim of this study is to evaluate the association between body image dissatisfaction and measurements of obesity - body mass index, waist circumference and body fat percentage - in students aged 7 to 10years in Florianopolis, Santa Catarina.

Methods: Body image dissatisfaction was assessed by the Figure Rating Scale for Brazilian children. Association analyses were performed using multinomial logistic regression.

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Objective: To estimate the prevalence of abdominal obesity and verify the association with sociodemographic factors (gender, school shift, ethnicity, age, maternal education and economic status) and lifestyle (alcohol consumption, sleep, soft drink consumption, level of physical activity and sedentary behavior) in adolescents in Southern Brazil.

Methods: This was a cross-sectional epidemiological study of 930 adolescents (490 girls) aged 14 to 19 years, living in the city of São José, SC, Brazil. A self-administered questionnaire was used to collect sociodemographic and lifestyle data.

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Article Synopsis
  • The study examined the prevalence of dyslipidemia, high blood glucose, and high blood pressure among 1,139 schoolchildren aged 6 to 18 in Amargosa, Brazil.
  • Prevalence rates were found to be 62.1% for dyslipidemia, 6.6% for high blood glucose, and 27% for high blood pressure, with various demographic and health factors influencing these rates.
  • The findings suggest a need for intervention programs targeting lifestyle changes among schoolchildren to address these health issues.
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Objective:: To evaluate the prevalence of low aerobic fitness levels and to analyze the association with sociodemographic factors, lifestyle and excess body fatness among adolescents of southern Brazil.

Methods:: The study included 879 adolescents aged 14-19 years the city of São José/SC, Brazil. The aerobic fitness was assessed by Canadian modified test of aerobic fitness.

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Purpose: Criterion-referenced cut-points for health-related fitness measures are lacking. This study aimed to determine the associations between aerobic fitness and high blood pressure levels (HBP) to determine the cut-points that best predict HBP among adolescents.

Method: This cross-sectional school-based study with sample of 875 adolescents aged 14-19 years was conducted in southern Brazil.

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Objectives: To investigate the prevalence of inaccurate estimation of own body size among Brazilian schoolchildren of both sexes aged 7-10 years, and to test whether overweight/obesity; excess body fat and central obesity are associated with inaccuracy.

Methods: Accuracy of body size estimation was assessed using the Figure Rating Scale for Brazilian Children. Multinomial logistic regression was used to analyze associations.

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