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Introduction: Obesity and metabolic syndrome (MetS) have immediate and long-term consequences on adolescent health and well-being. Among the available treatments for MetS in adolescents, behavioral interventions such as increasing physical activity (PA) are preferred. This study aimed to investigate the association of PA and sitting time with MetS and a complete set of metabolic health parameters. Methods: Data from the Pediatric Brazilian Metabolic Syndrome Study (BRAMS-P), a cross-sectional multicenter study conducted using a convenience sample of 448 Brazilian adolescents (10y-19y), were used. Sociodemographic and lifestyle information were collected using a standardized questionnaire. Daily PA and sitting time were estimated from the International PA Questionnaire. Anthropometric parameters, body composition, and blood pressure were measured by trained researchers. Blood lipids, uric acid, hepatic enzymes, creatinine, glycated hemoglobin, glucose, and insulin were measured in fasting blood samples, and the Homeostasis Model Assessment for Insulin Resistance was calculated. A subsample of 57 adolescents underwent the hyperglycemic clamp protocol. Results: The odds for metabolic syndrome were higher among adolescents who spent >8h sitting (OR (95%CI)=2.11 (1.02 - 4.38)), but not in those classified as active (OR (95%CI)=0.98 (0.42 - 2.26)). Adolescents who spent more time sitting had higher BMI, waist circumference, sagittal abdominal diameter, neck circumference, percentage of body fat, and worse blood lipid profile. The insulin sensitivity index was moderately and positively correlated with moderate-to-high PA in minutes per day (rho=0.29; p=0.047). Conclusion: Time spent sitting was associated with worse metabolic parameters and must be restricted in favor of adolescent health. Regular PA is associated with improved insulin sensitivity and may be encouraged not only in adolescents with obesity or metabolic disorders but also to prevent adverse metabolic outcomes in normal-weight adolescents.
Assuntos
Resistência à Insulina , Síndrome Metabólica , Humanos , Adolescente , Criança , Resistência à Insulina/fisiologia , Estudos Transversais , Obesidade/complicações , Lipídeos , Exercício FísicoRESUMO
ABSTRACT Objectives: To validate the homeostasis model assessment (HOMA) of insulin resistance (IR) as a surrogate to the hyperglycemic clamp to measure IR in both pubertal and postpubertal adolescents, and determine the HOMA-IR cutoff values for detecting IR in both pubertal stages. Subjects and methods: The study sample comprised 80 adolescents of both sexes (aged 10-18 years; 37 pubertal), in which IR was assessed with the HOMA-IR and the hyperglycemic clamp. Results: In the multivariable linear regression analysis, adjusted for sex, age, and waist circumference, the HOMA-IR was independently and negatively associated with the clamp-derived insulin sensitivity index in both pubertal (unstandardized coefficient - B = −0.087, 95% confidence interval [CI] = −0.135 to −0.040) and postpubertal (B = −0.101, 95% CI, −0.145 to −0.058) adolescents. Bland-Altman plots showed agreement between the predicted insulin sensitivity index and measured clamp-derived insulin sensitivity index in both pubertal stages (mean = −0.00 for pubertal and postpubertal); all P > 0.05. The HOMA-IR showed a good discriminatory power for detecting IR with an area under the receiver operator characteristic curve of 0.870 (95% CI, 0.718-0.957) in pubertal and 0.861 (95% CI, 0.721-0.947) in postpubertal adolescents; all P < 0.001. The optimal cutoff values of the HOMA-IR for detecting IR were > 3.22 (sensitivity, 85.7; 95% CI, 57.2-98.2; specificity, 82.6; 95% CI, 61.2-95.0) for pubertal and > 2.91 (sensitivity, 63.6; 95% CI, 30.8-89.1, specificity, 93.7; 95%CI, 79.2-99.2) for postpubertal adolescents. Conclusion: The threshold value of the HOMA-IR for identifying insulin resistance was > 3.22 for pubertal and > 2.91 for postpubertal adolescents.
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Lung function in children and adolescents with obesity must consider the coexistence of two complex and related phenomena: obesity and growth. The assessment of body composition can identify changes in respiratory dynamics arising, exclusively or jointly, from adiposity and lean body mass. This study aimed to compare pulmonary function and the dysanapsis indices of children and adolescents without asthma, with and without obesity, considering body composition, pubertal development, and physical activity practice. We performed a cross-sectional study with 69 participants, 41 (59.42%) of whom have obesity. All participants carried out spirometry and the assessment of, respectively, body composition by dual-energy X-ray absorptiometry, vital signs, pubertal development, and physical activity practice. In our data, the group with obesity had higher values of forced vital capacity (FVC) and lower values of the ratio between forced expiratory volume in one second and FVC (FEV1/FVC). Analyzing the entire sample, we found a positive correlation between FVC and a negative correlation between FEV1/FVC with fat mass markers. At the same time, inspiratory capacity, expiratory reserve volume, and peak expiratory flow were correlated with lean body mass markers. In addition, participants with obesity presented a lower dysanapsis index. In conclusion, children and adolescents with obesity showed increased FVC and reduced FEV1/FVC. Our findings are possibly related to the increase in fat mass, not to lean body mass. We hypothesize that these findings are associated with the dysanaptic growth pattern, which is higher in obesity, evidenced by the reduction of the dysanapsis index.
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Resumo Este estudo relata a estratégia para aprimorar o portfólio como instrumento de avaliação da aprendizagem em uma disciplina oferecida aos estudantes do quarto ano de graduação em Medicina, por meio do portfólio on-line. A disciplina é constituída de atividades práticas de atendimento integral à saúde da criança, do adolescente, do adulto e da mulher na atenção primária do município de Campinas. A utilização do portfólio permite que os estudantes reflitam sobre os atendimentos realizados em relação ao conhecimento, à habilidade clínica e ao vínculo médico-paciente na consulta. O portfólio on-line possibilitou rever os critérios de avaliação, agilizar e facilitar a gestão da correção, realizada por oitenta avaliadores de três especialidades médicas. O acesso às informações do portfólio na plataforma moodle permitiu a rápida tomada de decisão em aspectos que precisam ser adequados para a melhoria do processo ensino-aprendizagem.(AU)
Abstract This study reports on the strategy to improve the use of online portfolios as a learning assessment instrument of a discipline taught to fourth-year medical students. The discipline comprises practical activities of comprehensive care of children, teenagers, adults, and women in primary care in the Brazilian city of Campinas. Using portfolios, students are able to reflect upon the provided care as to the knowledge, clinical skills, and doctor-patient bond shown in the appointment. The online portfolio enabled to review the assessment criteria, and streamline and facilitate managing the assessment conducted by 80 evaluators from three medical specialties. Access to the portfolio's information in the Moodle platform enabled a fast decision-making process in aspects that need to be adequate to improve the teaching and learning process.(AU)
Resumen Este estudio relata la estrategia para perfeccionar el portafolio como instrumento de evaluación del aprendizaje en una disciplina ofrecida a los estudiantes del 4º. año de la graduación en medicina, por medio del portafolio online. La asignatura se compone de actividades prácticas de atención integral a la salud del niño, del adolescente, del adulto y de la mujer en la atención primaria del municipio de Campinas. La utilización del portafolio permite que los estudiantes reflexionen sobre las atenciones realizadas con relación al conocimiento, a la habilidad clínica y al vínculo médico-paciente en la consulta. El portafolio online posibilitó revisar los criterios de evaluación, agilizar y facilitar la gestión de la corrección realizada por 80 evaluadores de tres especialidades médicas. El acceso a las informaciones del portafolio en la plataforma Moodle permitió la rápida toma de decisiones en aspectos que tienen que adecuarse para la mejora del proceso enseñanza-aprendizaje.(AU)
Assuntos
Humanos , Sistemas On-Line/instrumentação , Educação de Graduação em Medicina/normas , Avaliação Educacional/métodosRESUMO
BACKGROUND: Studies on adults have reported inverse association between the homeostatic model assessment (HOMA) of adiponectin (HOMA-Adiponectin) and the insulin resistance assessed by the glucose clamp technique. To our knowledge, in the pediatric population this association has not been previously investigated. OBJECTIVES: To evaluate the association between the HOMA-Adiponectin and the insulin resistance assessed by the glucose clamp technique in adolescents, and to compare the accuracy of HOMA-Adiponectin and HOMA-insulin resistance (HOMA-IR) for identifying insulin resistance. METHODS: This was a cross-sectional study of 56 adolescents (aged 10-18 years). Insulin resistance was assessed using the HOMA-IR, HOMA-Adiponectin and the hyperglycaemic clamp technique. The clamp-derived insulin sensitivity index, HOMA-Adiponectin, and HOMA-IR were log-transformed to get closer to a normal distribution before analysis. RESULTS: In the multivariable linear regression analysis controlling for sex and Tanner stage, HOMA-Adiponectin was inversely associated with the clamp-derived insulin sensitivity index (unstandardized coefficient [B] = -0.441; P < 0.001). After additional adjustment for waist circumference-to-height ratio, this association remained significant (B = -0.349; P = < 0.001). Similar results were observed when HOMA-IR replaced HOMA-Adiponectin in the model (B = -1.049 and B = -0.968 after additional adjustment for waist circumference-to-height ratio); all P < 0.001. The area under the receiver operating characteristic curve for predicting insulin resistance was 0.712 (P = 0.02) for HOMA-Adiponectin and 0.859 (P < 0.0001) HOMA-IR. CONCLUSIONS: The HOMA-Adiponectin was independently associated with insulin resistance and exhibited a good discriminatory power for predicting it. However, it did not show superiority over HOMA-IR in the diagnostic accuracy.
Assuntos
Adiponectina/sangue , Homeostase , Resistência à Insulina , Modelos Biológicos , Adolescente , Criança , Estudos Transversais , Feminino , Técnica Clamp de Glucose , Humanos , MasculinoRESUMO
Objetivo Os acidentes são a principal causa de mortalidade entre crianças e adolescentes. Para sua prevenção, faz-se necessário conhecer esses eventos. O objetivo deste estudo foi descrever as características dos acidentes e das vítimas crianças e adolescentes, atendidas nos serviços sentinela de urgência em Campinas, comparando os dados obtidos nos Inquéritos Sentinela dos anos de 2011 e 2014. Métodos Trata-se de estudo descritivo transversal, em que foram incluídas vítimas de acidentes na faixa etária de 0 a 19 anos, residentes em Campinas, e que procuraram atendimento por essas ocorrências pela primeira vez, durante trinta dias consecutivos, em 2011 ou em 2014. Realizou-se análise descritiva por meio de distribuição de frequências e, para a avaliação da associação entre variáveis, empregou-se o teste de Qui-Quadrado. Resultados Foram analisados os dados de 284 atendimentos prestados em 2011, bem como os 414 atendimentos de 2014, de forma comparativa. O estudo concluiu que as vítimas mais frequentes pertenciam ao sexo masculino (59,9% e 63,3%, respectivamente em 2011 e 2014) e foram transportadas ao serviço por veículo particular (66,9% e 69,9%). Os acidentes mais frequentes foram quedas (45,4% e 41,3%) e outros eventos (39,8% e 42,8%), predominando o choque contra objeto/pessoa. Os acidentes ocorreram, principalmente, na residência (39,8% e 46,1%), de segunda a sexta-feira (64,4% e 64,3%), no período entre 12h e 18h (50,0% e 46,9%). A lesão predominante foi contusão (33,8% e 25,8%), principalmente nos membros superiores (38,6% e 29,2%) e nos inferiores (33,7% e 25,6%). A evolução nas primeiras 24 horas foi alta em 90,5% e 92,8% dos casos, respectivamente. Conclusão Em síntese, o estudo concluiu que predominaram vítimas do sexo masculino, que chegaram ao hospital por veículo particular. Prevaleceram quedas dentro da residência, causando contusões em membros, que evoluíram para alta.
Objective Accidents are the main cause of children and adolescent's mortality. For prevention purposes, it is necessary to understand these events. The objective of this study was to describe the characteristics of the accidents and their victims, children and adolescents, at the emergency sentinel health services of Campinas, based on Sentinel Survey 2011 and 2014. Methods A transversal descriptive study with accident victims from 0 to 19 years old, residents in Campinas, seeking treatment for the first time, during 30 consecutive days in 2011 and 2014. A descriptive analysis was carried out by frequency distribution and for the evaluation of the association between variables, a Chi-Square test was performed. Results There were 284 and 414 cases respectively. The most frequent victims were: male (59.9% and 63.3%), transported by private vehicles (66.9% and 69.9%). The accidents were: 45.4% and 41.3% fall; 39.8% and 42.8% others (mainly collision against object/ person). The events occurred mainly at home (39.8% and 46.1%), from Monday to Friday (64.4% and 64.3%), between 12 p.m. and 6 p.m. (50.0% and 46.9%). The most frequent injury was contusion (33.8% and 25.8%), especially upper limbs (38.6% and 29.2%) and lower limbs (33.7% and 25.6%). The evolution in the first 24 hours was discharge in 90.5% and 92.8%. Conclusion The main victims were males that arrived at the hospital on private vehicles. Falls at home that resulted in limb contusions with discharge prevailed.
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Humanos , Acidentes , Vigilância de Evento Sentinela , Prevenção de AcidentesRESUMO
OBJECTIVE:: to assess the severity of obesity in children and adolescents through the presence of comorbidities and the potential indication of bariatric surgery. METHODS:: we conducted a cross-sectional study with clinical and laboratory data of the first consultation of patients at the childhood obesity clinic at a tertiary hospital from 2005 to 2013. We divided the patients into groups with or without potential indication for surgery, and recorded age, gender, birth weight, age of obesity onset, BMI Z score, presence of acanthosis nigricans, blood pressure, total cholesterol and fractions, triglycerides, blood glucose and fasting insulin, HOMA1-IR, CRP and ESR. The group with potential indication for surgery included: BMI > 40 or between 35-40 with comorbidities (Triglycerides >130mg/dl, glucose levels >100mg/dl, HOMA1-IR >3.16, Total Cholesterol >200mg/dl, LDL >130mg/dl and HDL <45mg/dl), regardless of age, epiphysis consolidation and previous treatment. RESULTS:: of the 296 patients included in the study, 282 (95.3%) were younger than 16 years. The most frequent change was the HDL (63.2%), followed by HOMA1-IR (37.5%). Of the group of 66 patients with potential indication for surgery (22.3%), only ten (15.1%) had more than 16 years. Acanthosis nigricans, the average HOMA1-IR, insulin, CRP, ESR, age, BMI Z score and systolic and diastolic blood pressure were significant in the group with potential surgical indication. CONCLUSION:: bariatric surgery might be indicated by BMI and comorbidities in children and adolescents under 16 years. OBJETIVO:: avaliar a gravidade da obesidade em crianças e adolescentes pela presença de comorbidades e pela potencial indicação de cirurgia bariátrica. MÉTODOS:: estudo transversal com dados clínicos e laboratoriais da primeira consulta de pacientes do ambulatório de obesidade infantil em um hospital terciário no período de 2005 a 2013. Os pacientes foram divididos em grupos com ou sem potencial indicação cirúrgica, e associados com idade, sexo, peso de nascimento, idade de início da obesidade, escore z de IMC, presença de acantose nigricans, pressão arterial, colesterol total e frações, triglicérides, glicemia e insulina de jejum, HOMA1-IR, PCR e VHS. O grupo com potencial indicação cirúrgica incluiu: IMC >40 ou IMC entre 35-40 com comorbidades (Triglicérides >130mg/dl, Glicemia >100mg/dl, HOMA1-IR >3,16, Colesterol total >200mg/dl, LDL >130mg/dl e HDL <45mg/dl), independente da idade, consolidação das epífises e tratamento prévio. RESULTADOS:: de 296 pacientes incluídos no estudo, 282 (95,3%) tinham menos de 16 anos. A alteração mais frequente foi a do HDL (63,2%), seguido do HOMA1-IR (37,5%). Do grupo de 66 pacientes com potencial indicação cirúrgica (22,3%), apenas dez (15,1%) tinham mais de 16 anos. Acantose nigricans, as médias de HOMA1-IR, insulina, PCR, VHS, idade, escore z de IMC e pressões sistólica e diastólica foram significantes no grupo com potencial indicação cirúrgica. CONCLUSÃO:: os resultados sugerem que a cirurgia bariátrica, poderia estar indicada pelo IMC e presença de comorbidades, em crianças e adolescentes com menos de 16 anos.
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Cirurgia Bariátrica , Obesidade Infantil/cirurgia , Adolescente , Fatores Etários , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Obesidade Infantil/complicações , Índice de Gravidade de DoençaRESUMO
ABSTRACT Objective: to assess the severity of obesity in children and adolescents through the presence of comorbidities and the potential indication of bariatric surgery. Methods: we conducted a cross-sectional study with clinical and laboratory data of the first consultation of patients at the childhood obesity clinic at a tertiary hospital from 2005 to 2013. We divided the patients into groups with or without potential indication for surgery, and recorded age, gender, birth weight, age of obesity onset, BMI Z score, presence of acanthosis nigricans, blood pressure, total cholesterol and fractions, triglycerides, blood glucose and fasting insulin, HOMA1-IR, CRP and ESR. The group with potential indication for surgery included: BMI > 40 or between 35-40 with comorbidities (Triglycerides >130mg/dl, glucose levels >100mg/dl, HOMA1-IR >3.16, Total Cholesterol >200mg/dl, LDL >130mg/dl and HDL <45mg/dl), regardless of age, epiphysis consolidation and previous treatment. Results: of the 296 patients included in the study, 282 (95.3%) were younger than 16 years. The most frequent change was the HDL (63.2%), followed by HOMA1-IR (37.5%). Of the group of 66 patients with potential indication for surgery (22.3%), only ten (15.1%) had more than 16 years. Acanthosis nigricans, the average HOMA1-IR, insulin, CRP, ESR, age, BMI Z score and systolic and diastolic blood pressure were significant in the group with potential surgical indication. Conclusion: bariatric surgery might be indicated by BMI and comorbidities in children and adolescents under 16 years.
RESUMO Objetivo: avaliar a gravidade da obesidade em crianças e adolescentes pela presença de comorbidades e pela potencial indicação de cirurgia bariátrica. Métodos: estudo transversal com dados clínicos e laboratoriais da primeira consulta de pacientes do ambulatório de obesidade infantil em um hospital terciário no período de 2005 a 2013. Os pacientes foram divididos em grupos com ou sem potencial indicação cirúrgica, e associados com idade, sexo, peso de nascimento, idade de início da obesidade, escore z de IMC, presença de acantose nigricans, pressão arterial, colesterol total e frações, triglicérides, glicemia e insulina de jejum, HOMA1-IR, PCR e VHS. O grupo com potencial indicação cirúrgica incluiu: IMC >40 ou IMC entre 35-40 com comorbidades (Triglicérides >130mg/dl, Glicemia >100mg/dl, HOMA1-IR >3,16, Colesterol total >200mg/dl, LDL >130mg/dl e HDL <45mg/dl), independente da idade, consolidação das epífises e tratamento prévio. Resultados: de 296 pacientes incluídos no estudo, 282 (95,3%) tinham menos de 16 anos. A alteração mais frequente foi a do HDL (63,2%), seguido do HOMA1-IR (37,5%). Do grupo de 66 pacientes com potencial indicação cirúrgica (22,3%), apenas dez (15,1%) tinham mais de 16 anos. Acantose nigricans, as médias de HOMA1-IR, insulina, PCR, VHS, idade, escore z de IMC e pressões sistólica e diastólica foram significantes no grupo com potencial indicação cirúrgica. Conclusão: os resultados sugerem que a cirurgia bariátrica, poderia estar indicada pelo IMC e presença de comorbidades, em crianças e adolescentes com menos de 16 anos.