Abstract Objectives: The aim of this study was to estimate the percentage distribution of body composition parameters for healthy people at different ages from the assessment of electrical bioimpedance. Methods: A cross-sectional study of healthy Brazilian aged 5 years and older. Were evaluated: total body fat; percent body fat; fat-free mass; percent lean mass; fat mass index; and fat-free mass index. Results: Of 1240 participants, with a median age of 27.0 years, 52.5% were female, and 73.7% were Caucasian. Most of the body composition variables were associated with age. The fat-free mass increased from youth to adult and decreased in the elderly in both sexes, with higher values in males than in females. In males, the percentage of lean mass has higher values in adolescence compared to childhood, and in adults compared to the elderly, when analyzed from the 50th percentile. In women, fat-free mass compared to adulthood, values were higher in childhood and lower in older ages. Conclusions: The study is the first to describe the Brazilian reference values for most clinical parameters of bioimpedance in percentiles stratified by different life cycles and sex. These findings can be very useful in clinical practice for health promotion and monitoring the nutritional status of the individual.

RESUMO Objetivo Avaliar a associação entre a composição corporal de crianças e adolescentes com a renda familiar. Métodos Estudo transversal, foram incluídos participantes entre 5 e 19 anos. As variáveis socioeconômicas foram avaliadas por meio de questionário padronizado. As variáveis de desfecho foram escore Z do índice de massa corporal e parâmetros de bioimpedância (massa muscular esquelética, massa livre de gordura e percentual de gordura) e variáveis preditoras (idade, sexo, raça, local de residência, escolaridade do pai, peso ao nascer e aleitamento materno) foram analisados pelo modelo de regressão quantílica e são apresentados os dados do percentil 50. Os testes foram bidirecionais, e as diferenças foram consideradas significativas com p<0,05. Resultados Entre os 529 participantes incluídos, 284 (53,6%) eram do sexo feminino e a média de idade foi de 11,41±3,9 anos. O escore Z do índice de massa corporal foi o único desfecho que não apresentou diferenças entre os sexos (p=0,158). No modelo bruto, uma menor renda familiar foi associada a menor massa muscular esquelética (Diferença= -7,70; IC 95% -9,32 a -5,89), p<0,001), menor massa livre de gordura (Diferença= -13,40; IC 95% -16,40 a -10,39, p<0,001) e o menor percentual de gordura associou-se à menor renda familiar (Diferença= -5,01, IC 95% -9,91 a -0,11, p=0,027). O escore Z do IMC não foi associado à renda familiar. Conclusão A renda familiar está diretamente associada à menor massa magra, ao percentual de gordura e à massa muscular esquelética em crianças e adolescentes.

ABSTRACT Objective To evaluate the association between children and adolescents’ body composition with family income. Methods Cross-sectional study, participants between 5 and 19 years were included. A standardized questionnaire assessed socioeconomic variables. The outcome variables were z-score of Body Mass Index and bioimpedance parameters (skeletal muscle mass, fat-free mass, and fat percentage) and predictor variables (age, sex, race, place of residence, father’s education, birth weight and breastfeeding) were analyzed using the quantile regression model and data from the 50th percentile are presented. The tests were bidirectional and the differences were considered significant with p<0.05. Results Among the 529 participants included, 284 (53.6%) were female and the mean age was 11.41±3.9 years. The Body Mass Index z-score was the only outcome that did not show differences between sexes (p=0.158). In the crude model, lower family income was associated with lower skeletal muscle mass (Difference=-7.70; 95% CI -9.32 to -5.89), p<0.001), lower fat-free mass (Difference= -13.40; 95% CI -16.40 to -10.39, p<0.001) and the lowest percentage of fat was associated with lower family income (Difference= -5.01, 95% CI -9.91 to -0.11, p=0.027). The z-score of BMI was not associated with family income. Conclusion Family income is directly associated with lower fat-free mass, fat percentage, and skeletal muscle mass in children and adolescents.

ABSTRACT Introduction: Prostate cancer (PC) is the second most commonly diagnosed cancer in males. 68Ga-PSMA PET/CT, a non-invasive diagnostic tool to evaluate PC with prostate-specific membrane antigen (PSMA) expression, has emerged as a more accurate alternative to assess disease staging. We aimed to identify predictors of positive 68Ga-PSMA PET and the accuracy of this technique. Materials and methods: Diagnostic accuracy cross-sectional study with prospective and retrospective approaches. We performed a comprehensive literature search on PubMed, Cochrane Library, and Embase database in search of studies including PC patients submitted to radical prostatectomy or radiotherapy with curative intent and presented biochemical recurrence following ASTRO 1996 criteria. A total of 35 studies involving 3910 patients submitted to 68-Ga-PSMA PET were included and independently assessed by two authors: 8 studies on diagnosis, four on staging, and 23 studies on restaging purposes. The significance level was α=0.05. Results: pooled sensitivity and specificity were 0.90 (0.86-0.93) and 0.90 (0.82-0.96), respectively, for diagnostic purposes; as for staging, pooled sensitivity and specificity were 0.93 (0.86-0.98) and 0.96 (0.92-0.99), respectively. In the restaging scenario, pooled sensitivity and specificity were 0.76 (0.74-0.78) and 0.45 (0.27-0.58), respectively, considering the identification of prostate cancer in each described situation. We also obtained specificity and sensitivity results for PSA subdivisions. Conclusion: 68Ga-PSMA PET provides higher sensitivity and specificity than traditional imaging for prostate cancer.

Abstract Objective: The aim of the present study was to evaluate the agreement between the most used skinfold thickness equations with multi-frequency bioimpedance analysis in the prediction of body fat levels in children. Method: A cross-sectional study of healthy Brazilian community-dwelling individuals. The anthropometric assessment included height, body mass, arm circumference, and waist circumference. The percentage of body fat was obtained by measuring skinfold thickness equations and using bioimpedance analysis, and skinfold thickness was measured using a scientific skinfold caliper. Bland-Altman plot analysis was used to verify the agreement between the methods. Results: There were 439 children and adolescents evaluated, with a mean age of 11.6 ± 3.7 years. The mean body fat by bioimpedance analysis was 22.8% ± 10.4%, compared to 22.4% ± 8.8% by Slaughter (1), 20.4% ± 9.2% by Slaughter (2), 19.6% ± 4.4% by Goran, and 24.7% ± 10.0% by Huang equations. Bland-Altman plot analysis revealed limits of agreement greater than 8% between the bioimpedance analysis approach and equations, exceeding the clinically acceptable limit predefined a priori. None of the equations had good agreement with bioimpedance analysis. Conclusion: It was concluded that skinfold thickness and bioimpedance analysis should not be used interchangeably in children and adolescents.

Resumo: Objetivo: Avaliar o nível de concordância a respeito da qualidade de vida relacionada à saúde entre crianças com bronquiolite obliterante pós-infecciosa e seus pais (responsáveis). Métodos: Os participantes entre 8-17 anos, anteriormente diagnosticados com bronquiolite obliterante pós-infecciosa, foram acompanhados regularmente no ambulatório de pneumologia pediátrica. Os pais ou responsáveis legais (cuidadores) desses pacientes também foram convidados a participar do estudo. Uma versão validada e adequada para a idade do Inventário Pediátrico de Qualidade de Vida, versão 4.0, foi utilizada para a avaliação da qualidade de vida relacionada à saúde. Os cuidadores concluíram as versões do questionário correspondentes aos responsáveis. A correlação entre os autorrelatos e os relatos dos responsáveis da qualidade de vida relacionada à saúde foi determinada pelo coeficiente de correlação intraclasse e pelos testes t dependentes. Resultados: A maior parte dos participantes era do sexo masculino (79,4%) e a idade média foi 11,8 anos. As correlações intraclasse entre cada um dos domínios do Inventário Pediátrico de Qualidade de Vida e o escore total foram todas inferiores a 0,6, com intervalo entre 0,267 (baixo) e 0,530 (justo). Quando as médias de cada domínio e o escore total dos questionários foram comparados, observamos que os cuidadores apresentaram qualidade de vida relacionada à saúde significativamente menor em comparação com as crianças, com exceção do domínio social, no qual a diferença não foi significativa. Contudo, as diferenças no escore ultrapassaram o limite de diferença essencial de 4 pontos em todos os outros domínios. Conclusão: Os responsáveis pelas crianças e adolescentes com bronquiolite obliterante pós-infecciosa parecem perceber de forma consistente que suas crianças possuem qualidade de vida relacionada à saúde menor que os próprios pacientes.

Abstract Objective: To assess the level of agreement in health-related quality of life between children with Post-infectious Bronchiolitis Obliterans and their parent (so-called proxy). Methods: Participants aged between 8and 17 years who had been previously diagnosed with Post-infectious Bronchiolitis Obliterans were regularly followed up at a pediatric pulmonology outpatient clinic. Parents or legal guardians (caregivers) of these patients were also recruited for the study. A validated and age-appropriate version of the Pediatric Quality of Life Inventory 4.0 was used for the assessment of health-related quality of life. Caregivers completed the corresponding proxy versions of the questionnaire. The correlation between self and proxy reports of health-related quality of life was determined by intra-class correlation coefficient and dependent t-tests. Results: The majority of participants were males (79.4%), and the average age was 11.8 years. Intra-class correlations between each of the Pediatric Quality of Life Inventory 4.0 domains and the total score were all lower than 0.6, with a range between 0.267 (poor) and 0.530 (fair). When the means of each domain and the total score of the questionnaires were compared, caregivers were observed to have a significantly lower health-related quality of life score than children, with the exception of the social domain in which the difference was not significant. However, the differences in score exceeded the critical threshold difference of four points in all other domains. Conclusion: Proxies of children and adolescents with Post-infectious Bronchiolitis Obliterans appear to consistently perceive their children as having lower health-related quality of life than how the patients perceive themselves.

Resumo Foram avaliados os efeitos da prática orientada de exercícios físicos em pacientes encaminhados por médicos das equipes da Estratégia de Saúde da Família do município de Canela, Rio Grande do Sul, Brasil. Os exercícios foram feitos em academia de ginástica do SUS sob supervisão direta do professor de educação física. Os 120 participantes, 99 mulheres e 21 homens, entre 10 e 78 anos, foram acompanhados durante seis meses. Constatou-se melhoria do VO2máx (20,07 ± 14,14 para 31,68 ± 12,18 p < 0,001) e do tempo em segundos para percorrer uma milha (1.171 ± 228 para 954 ± 163 p < 0,001), entre outras variáveis quantitativas. A qualidade de vida percebida com o questionário WHOQOL-BREF evidenciou melhoria em todos os domínios: físico (67,6 ± 15,5 para 74,7 ± 12,4 p < 0,001); psicológico (62,4 ± 14,9 para 70,7 ± 12,6 p < 0,001); social (70,3 ± 16,8 para 76,4 ± 16,0 p < 0,001) e ambiental (62,8 ±12,4 para 68,2 ± 12,1 p < 0,001).

Abstract The effects of guided practice physical exercise in patients referred by medical teams of the Health Strategy Family of the municipality of Canela, Rio Grande do Sul, Brazil were evaluated. The exercises were performed in the fitness SUS under direct supervision of a physical education teacher. The 120 participants, 99 women and 21 men, aged 10 to 78 years, were followed for 6 months. It found improvement in VO2máx (20.07 ± 14.14 to 31.68 ± 12.18 p < 0.001) and time in seconds to travel 1 mile (1171 ± 228 to 954 ± 163 p < 0.001), among other quantitative variables. The perceived quality of life with the WHOQOL -BREF questionnaire showed improvement in all domains: physical (67.6 ± 15.5 to 74.7 ± 12.4 p < 0.001), psychological (62.4 ± 14.9 to 70.7 ± 12.6 p < 0.001), social (70.3 ± 16.8 to 76.4 ± 16.0 p < 0.001) and environmental (62.8 ± 12.4 to 68.2 ± 12, 1 p < 0.001).

Resumen Se evaluaron los efectos del ejercicio físico en pacientes derivados por médicos de los equipos de la Estrategia de Salud de la Familia del municipio de Canela, Rio Grande do Sul, Brasil. Los ejercicios se realizaron en el gimnasio del SUS bajo la supervisión directa de un profesor de educación física. Se hizo un seguimiento de 6 meses de los 120 participantes, 99 mujeres y 21 hombres, entre 10 y 78 años. Se encontró una mejoría en su VO2máx. (de 20,07 ± 14,14 a 31,68 ± 12,18; p <0,001) y el tiempo en segundos para correr 1 milla (de 1.171 ± 228 a 954 ± 163; p <0,001) entre otras variables cuantitativas. La percepción de la calidad de vida con el cuestionario WHOQOL-BREF mostró una mejora en todos los ámbitos: físico (de 67,6 ± 15,5 a 74,7 ± 12,4; p <0,001), psicológico (de 62,4 ± 14,9 a 70,7 ± 12,6; p <0,001), social (de 70,3 ± 16,8 a 76,4 ± 16,0; p <0,001) y del entorno (de 62,8 ± 12,4 a 68,2 ± 12,1; p <0,001). Esta mejora no está relacionada con el número de clases a las cuales asistieron.

Resumo O objetivo deste artigo é revisar sistematicamente as evidências sobre as técnicas de avaliação nutricional e parâmetros utilizados para determinar o estado nutricional em crianças e adolescentes. Revisão da literatura com busca nas bases de dados, Medline, Lilacs, SciELO e Embase, além de arquivos pessoais. Identificamos 17 artigos que relatavam dados de diferentes populações, sete estudos abordaram os índices antropométricos, quatro o crescimento e o desenvolvimento de crianças e adolescentes por meio de curvas de crescimento, e o restante a composição corporal. Todos preencheram os critérios de qualidade, com exceção das limitações. A revisão da literatura sugere diversas técnicas e parâmetros que podem ser aplicados para determinar o estado nutricional de crianças e adolescentes de diferentes países. Gráficos de crescimento são essenciais para avaliar a saúde de crianças, mas depende muito das tabelas de crescimento utilizadas. Embora o IMC seja prático, não distingue a gordura corporal de massa magra. Existem várias técnicas para avaliar proporções, tamanho e composição corporal. A melhor interpretação da antropometria dependerá de valores de referência válidos para a faixa etária da população estudada. BIA é um método factível, mas tem algumas limitações para a realização do exame.

Abstract This article aims to review systematically the evidence on nutritional assessment techniques and parameters used to determine the nutritional status of children and adolescents. The literature review and the selection of publications were performed using the Medline, Lilacs, SciELO, Embase, personal files. 17 studies were identified, 7 addressed the anthropometric indices as the main outcome, 7 analyzed the growth and development of children and adolescents through growth curves, and the remainder surveyed body composition. In general, all met the quality criteria, unless 6 of the articles who did not discuss the limitations. The literature review suggests several techniques and parameters that can be applied to determine the nutritional status of children and adolescents from different countries. Growth graphs are essential to assess the health of children, but depend greatly of the growth tables used. Although BMI can be practical, it does not distinguish body fat from lean mass. The best interpretation of anthropometry will depend of valid reference values for age range of the study population. BIA is a quick feasible method, but the measurement has some various nationalities.

Resumo Objetivo: Avaliar a qualidade de vida relacionada à saúde geral em participantes com bronquiolite obliterante. Métodos: Foram incluídos no estudo participantes com diagnóstico de bronquiolite obliterante pós-infecciosa que estavam em acompanhamento em dois ambulatórios especializados de pneumologia pediátrica em Porto Alegre, Brasil e controles, entre 8 e 17 anos, de ambos os sexos. Os controles foram pareados por sexo, idade e nível socioeconômico em relação ao grupo de participantes com bronquiolite obliterante pós-infecciosa. Para avaliação da Qualidade de Vida Relacionada à Saúde geral foi aplicado a versão validada para o Brasil do instrumento PedsQL (Pediatric Quality of Life Inventory), por meio de entrevista. A comparação entre as médias da Qualidade de Vida Relacionada à Saúde entre os grupos foi realizada mediante o teste t para amostras independentes e para as variáveis categóricas por teste qui-quadrado. Resultados: Participaram do estudo 34 pacientes com diagnóstico de bronquiolite obliterante pós-infecciosa e 34 controles. A média da idade das crianças incluídas foi de 11,2 ± 2,5 anos e 49 (72%) deles eram do sexo masculino. Os grupos não apresentaram diferenças significativas em relação a essas variáveis. O escore de qualidade de vida foi significativamente e clinicamente menor no grupo bronquiolite obliterante pós-infecciosa em comparação com o controle nos domínios saúde: (72,36 ± 15,6; 81,06 ± 16,4; p = 0,031); escolar: (62,34 ± 20,7; 72,94 ± 21,3; p = 0,043) e no escore total (69,53 ± 14,9; 78,02 ± 14,8, p = 0,024), respectivamente. Conclusão: Os pacientes com bronquiolite obliterante pós-infecciosa apresentam escores de qualidade de vida relacionados à saúde menor do que indivíduos saudáveis no escore total e nos domínios saúde e escolares.

Abstract Objective: To evaluate the overall health-related quality of life in patients with bronchiolitis obliterans. Methods: Participants with a diagnosis of post-infectious bronchiolitis obliterans, who were being followed-up at two specialized outpatient clinics of Pediatric Pulmonology in Porto Alegre, Brazil, and controls aged between 8 and 17 years, of both genders, were included in the study. Controls were paired by gender, age, and socioeconomic level in relation to the group of participants with post-infectious bronchiolitis obliterans. The version of the Pediatric Quality of Life Inventory (PedsQ) tool validated for Brazil was applied for the assessment of Health-related Quality of Life, through an interview. The comparison of the Health-related Quality of Life means between the groups was performed using Student's t-test for independent samples and the chi-squared test, for categorical variables. Results: 34 patients diagnosed with post-infectious bronchiolitis obliterans and 34 controls participated in the study. The mean age of the children included in the study was 11.2 ± 2.5 years, and 49 (72%) of them were males. The groups showed no significant differences in relation to these variables. The quality of life score was significantly and clinically lower in the post-infectious bronchiolitis obliterans group when compared with controls in the health (72.36 ± 15.6, 81.06 ± 16.4, p = 0.031) and school domains (62.34 ± 20.7, 72.94 ± 21.3, p = 0.043), as well as in the total score (69.53 ± 14.9, 78.02 ± 14.8, p = 0.024), respectively. Conclusion: Patients with post-infectious bronchiolitis obliterans presented lower health-related quality of life scores when compared with healthy individuals in the total score and in the health and school domains.

Resumo O objetivo deste artigo é revisar sistematicamente as evidências sobre as técnicas de avaliação nutricional e parâmetros utilizados para determinar o estado nutricional em crianças e adolescentes. Revisão da literatura com busca nas bases de dados, Medline, Lilacs, SciELO e Embase, além de arquivos pessoais. Identificamos 17 artigos que relatavam dados de diferentes populações, sete estudos abordaram os índices antropométricos, quatro o crescimento e o desenvolvimento de crianças e adolescentes por meio de curvas de crescimento, e o restante a composição corporal. Todos preencheram os critérios de qualidade, com exceção das limitações. A revisão da literatura sugere diversas técnicas e parâmetros que podem ser aplicados para determinar o estado nutricional de crianças e adolescentes de diferentes países. Gráficos de crescimento são essenciais para avaliar a saúde de crianças, mas depende muito das tabelas de crescimento utilizadas. Embora o IMC seja prático, não distingue a gordura corporal de massa magra. Existem várias técnicas para avaliar proporções, tamanho e composição corporal. A melhor interpretação da antropometria dependerá de valores de referência válidos para a faixa etária da população estudada. BIA é um método factível, mas tem algumas limitações para a realização do exame.

Abstract This article aims to review systematically the evidence on nutritional assessment techniques and parameters used to determine the nutritional status of children and adolescents. The literature review and the selection of publications were performed using the Medline, Lilacs, SciELO, Embase, personal files. 17 studies were identified, 7 addressed the anthropometric indices as the main outcome, 7 analyzed the growth and development of children and adolescents through growth curves, and the remainder surveyed body composition. In general, all met the quality criteria, unless 6 of the articles who did not discuss the limitations. The literature review suggests several techniques and parameters that can be applied to determine the nutritional status of children and adolescents from different countries. Growth graphs are essential to assess the health of children, but depend greatly of the growth tables used. Although BMI can be practical, it does not distinguish body fat from lean mass. The best interpretation of anthropometry will depend of valid reference values for age range of the study population. BIA is a quick feasible method, but the measurement has some various nationalities.