Association of physical activity and sitting with metabolic syndrome and hyperglycemic clamp parameters in adolescents - BRAMS pediatric study.

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.

The threshold value for identifying insulin resistance (HOMA-IR) in an admixed adolescent population: A hyperglycemic clamp validated study

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.

Association between Pulmonary Function and Body Composition in Children and Adolescents with and without Obesity.

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.

Portfólio on-line: estratégia para melhorar o sistema de avaliação da disciplina de Atenção Integral à Saúde do curso de Medicina / Online portfolio: strategy to improve the assessment system of the Integral Health Care discipline in the medical course / Portafolio on-line: estrategia para mejorar el sistema de evaluación de la disciplina de Atención Integral de Salud del Curso de Medicina

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)

Concordance between whole- and half-body scans to evaluate body composition in dual-energy X-ray absorptiometry in children and adolescents with different nutritional and pubertal conditions.

OBJECTIVES: Evaluation of body composition is a relevant clinical instrument for the follow-up assessments of children and adolescents, and dual-energy X-ray absorptiometry (DXA) is an accurate method for the pediatric population. However, DXA has limited scan area for the obese population. Thus, half-body scans emerged as an alternative to evaluate individuals with obesity. The aim of this study was to compare the body composition of children and adolescents with whole- and half-body DXA scans, considering nutritional status, pubertal development, sex, and age. METHODS: This was a cross-sectional, analytical, and diagnostic intervention study with a sample of 82 participants of both sexes between 4 and 20 y of age. Body composition was evaluated by DXA using an iDXA bone densitometer (GE Healthcare Lunar, Madison, WI, USA). Two evaluations were performed: whole-body and half-body scans. The Bland-Altman correlation and linear regression tests were applied to identify the presence of association bias between the techniques. α = 0.05 was set. RESULTS: Of the 82 participants, 20 were excluded. A high correlation was observed between the data (correlation coefficient ∼0.999). Bland-Altman plots and regression analyses demonstrated correlation and randomness bias between whole- and half-body scan techniques in obese or normal weight participants for all DXA markers. CONCLUSIONS: The use of half-body scans was feasible and accurate to evaluate whole-body composition. The difference bias between techniques occurred randomly and was clinically irrelevant. A high correlation was observed between half- and whole-body analysis techniques.

Homeostatic model assessment of adiponectin (HOMA-Adiponectin) as a surrogate measure of insulin resistance in adolescents: Comparison with the hyperglycaemic clamp and homeostatic model assessment of insulin resistance.

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.

Acidentes com crianças e adolescentes, segundo o Inquérito Sentinela / Accidents involving children and adolescents, according to Sentinel Survey

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.

Bariatric surgery: is it reasonable before the age of 16?

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.

Bariatric surgery: is it reasonable before the age of 16? / Cirurgia bariátrica: é razoável antes dos 16 anos de idade?

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.

Hypertriglyceridemic Waist Phenotype Indicates Insulin Resistance in Adolescents According to the Clamp Technique in the BRAMS Study.

OBJECTIVE: This study aimed to identify cutoff points for detecting hypertriglyceridemic waist phenotype (HTWP) in adolescents and to investigate the association of the HTWP with insulin resistance (IR) and metabolic syndrome components. METHODS: A multicentric cross-sectional study of 861 adolescents (10-19 years of age, 504 girls) was conducted. Pubertal stage, anthropometric, and laboratory parameters were assessed. IR was assessed by Homeostasis Model Assessment for Insulin Resistance (HOMA1-IR) index and hyperglycemic clamp (n = 80). HTWP was defined by the presence of increased plasma triglycerides (TGs) and increased waist circumference (WC) according to cutoff points obtained in ROC curve analysis given the HOMA1-IR index as a reference method. RESULTS: Cutoffs for WC and TGs, with a higher sum of sensitivity (S) and specificity (E), were, respectively: >84 cm (S:65.1%, E:71.9%) and >87 mg/dL (S:65.1%, E:73.4%) in pubertal girls; >88.5 cm (S:80.2%, E:60.2%) and >78 mg/dL (S:60.5%, E:53.2%) in postpubertal girls; >94 cm (S:73.1%, E:83.1%) and >79 mg/dL (S:61.5%, E:60.2%) in pubertal boys; and >99 cm (S:81.3%, E:78.7%) and >86 mg/dL in postpubertal boys (S:68.1%, E:60.7%). HTWP frequency was 27.5%. In the phenotype presence, after adjustment for age and pubertal stage, blood pressure and fasting glucose levels were elevated and high-density lipoprotein cholesterol was lower (p < 0.001). Adolescents with the HTWP showed more IR, evaluated both by the HOMA1-IR and by the clamp test (p < 0.003). CONCLUSION: The findings suggest HTWP as an IR status in adolescents. Cutoff point standardization for gender and pubertal stage, combined with the ease of application of the method, may allow their use for screening adolescents who would most benefit from lifestyle changes.

Association of Sleep Deprivation With Reduction in Insulin Sensitivity as Assessed by the Hyperglycemic Clamp Technique in Adolescents.

IMPORTANCE: The association between short sleep duration and decreased insulin sensitivity in adolescents has been described. However, to our knowledge, no studies have investigated this association measuring insulin sensitivity by the hyperglycemic clamp technique. OBJECTIVES: To compare the distributions of parameters of insulin resistance in adolescents with sleep deprivation vs adequate sleep, and to investigate the association between sleep deprivation and insulin sensitivity. DESIGN, SETTING, AND PARTICIPANTS: Cross-sectional multicenter study using data from the Brazilian Metabolic Syndrome Study conducted from June 29, 2011, to December 3, 2014, at an obesity outpatient clinic at the University of Campinas and public schools, with a convenience sample of 615 adolescents aged 10 to 19.9 years with a body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) for age and sex at the fifth percentile or higher. A subsample of 81 adolescents underwent the hyperglycemic clamp technique. MAIN OUTCOMES AND MEASURES: The self-reported sleep duration was used to classify the population into 2 groups: adolescents with sleep deprivation (<8 hours/night) and adolescents with adequate sleep (≥8 hours/night). Insulin sensitivity was assessed using the hyperglycemic clamp technique. RESULTS: Among the 615 adolescents (56.3% female; median age, 15.9 years [interquartile range, 12.9-17.8 years]) included in the sample, the mean (SD) sleep duration was 7.9 (1.7) hours/night. The adolescents with sleep deprivation (n = 257) compared with those with adequate sleep (n = 358) had a higher median (interquartile range) age (17.0 [15.4-18.3] vs 14.1 [11.8-16.9] years), BMI (25.0 [21.2-29.3] vs 23.1 [19.5-27.6]), waist circumference (83.0 [73.5-95.4] vs 79.0 [68.5-91.0] cm), sagittal abdominal diameter (17.9 [15.8-20.8] vs 17.0 [15.0-19.8] cm), neck circumference (35.2 [33.0-38.0] vs 33.0 [30.0-35.5] cm), uric acid level (4.9 [4.0-5.8] vs 4.5 [3.7-5.5] mg/dL), and white blood cell count (7000 [5900-8200] vs 6600 [5600-7800] cells/µL) (all P < .05). Moreover, the adolescents with sleep deprivation had a lower median (interquartile range) insulin sensitivity index compared with those with adequate sleep (0.10 [0.05-0.21] vs 0.21 [0.09-0.33] mg · kgfat-free mass-1 · min-1 · mU/L × 100, respectively; difference, -0.01; 95% CI, -0.01 to -0.00; P = .02). After controlling for age and sex in the multivariate regression model, sleep deprivation remained an independent predictor for those variables. In the sleep deprivation group, BMI and central distribution of fat were higher in all categories of adiposity. CONCLUSIONS AND RELEVANCE: Sleep deprivation (<8 hours of sleep per night) is associated with centripetal distribution of fat and decreased insulin sensitivity in adolescents. Therefore, investigations of sleep duration and sleep quality in adolescents should be included in clinical practice to promote, through health education, the eradication of the health risks associated with sleep restriction.

Growth curves for girls with Turner syndrome.

The objective of this study was to review the growth curves for Turner syndrome, evaluate the methodological and statistical quality, and suggest potential growth curves for clinical practice guidelines. The search was carried out in the databases Medline and Embase. Of 1006 references identified, 15 were included. Studies constructed curves for weight, height, weight/height, body mass index, head circumference, height velocity, leg length, and sitting height. The sample ranged between 47 and 1,565 (total = 6,273) girls aged 0 to 24 y, born between 1950 and 2006. The number of measures ranged from 580 to 9,011 (total = 28,915). Most studies showed strengths such as sample size, exclusion of the use of growth hormone and androgen, and analysis of confounding variables. However, the growth curves were restricted to height, lack of information about selection bias, limited distributional properties, and smoothing aspects. In conclusion, we observe the need to construct an international growth reference for girls with Turner syndrome, in order to provide support for clinical practice guidelines.

A não percepção da obesidade pode ser um obstáculo no papel das mães de cuidar de seus filhos / The non perception of obesity can be an obstacle to the role of mothers in taking care of their children

O objetivo deste estudo foi revisar na literatura científica os artigos que investigam o papel das mães, dos pais e das famílias no tratamento da obesidade dos filhos. Buscou-se artigos originais nas plataformas Bireme (BVS) e Pubmed (Medline) e na base de dados Scielo, entre os anos de 2004 a 2010, com os descritores "the role of parents" and "childhood obesity", "the role of parents" and "child obesity treatment", "the mothers role" and "childhood obesity"; "the mothers" role" and "child obesity treatment", e em português. Foram selecionados 20 estudos, divididos em duas categorias temáticas.Verificou-se que há implicações do papel da familia, pai ou mãe na obesidade das crianças e mais especificamente, dos fatores relacionados ao papel das mães. Identificou-se como fundamental o papel dos pais, mães e familiares no sentido de promover comportamentos e estilos de vida saudável. A percepção materna distorcida faz com que o excesso de peso seja percebido como normal e isso pode prejudicar o tratamento. O reconhecimento do excesso de peso das crianças possivelmente poderá promover uma melhora na adesão e, além disso, pode ser o requisito necessário para a procura de ajuda profissional.

The goal of this study is to review articles in the scientific literature investigating the role of mothers, fathers and relatives in the treatment of obesity of their children. A search for original articles was conducted in the BIREME (BVS), PUBMED (MEDLINE) and Scielo platforms from 2004 to 2010, using the key words "the role of parents" and "childhood obesity," "the role of parents" and "child obesity treatment," "the mother's role" and "childhood obesity," "the mothers role" and "child obesity treatment." Twenty papers were selected and divided into two thematic categories. It was revealed that there are implications of the role of family, namely the father or mother, on the obesity of children, and more specifically related to the role of mothers. The conclusion drawn is that the role of parents and relatives is fundamental in promoting healthy behavior and lifestyles. Distorted maternal perception leads to excess weight being perceived as normal and this may prejudice treatment of child obesity. Acknowledging that the children are overweight most probably promotes greater acceptance of the need for treatment, in addition to being the necessary impetus for seeking professional assistance.

[The non perception of obesity can be an obstacle to the role of mothers in taking care of their children]. / A não percepção da obesidade pode ser um obstáculo no papel das mães de cuidar de seus filhos.

The goal of this study is to review articles in the scientific literature investigating the role of mothers, fathers and relatives in the treatment of obesity of their children. A search for original articles was conducted in the BIREME (BVS), PUBMED (MEDLINE) and Scielo platforms from 2004 to 2010, using the key words "the role of parents" and "childhood obesity," "the role of parents" and "child obesity treatment," "the mother's role" and "childhood obesity," "the mothers role" and "child obesity treatment." Twenty papers were selected and divided into two thematic categories. It was revealed that there are implications of the role of family, namely the father or mother, on the obesity of children, and more specifically related to the role of mothers. The conclusion drawn is that the role of parents and relatives is fundamental in promoting healthy behavior and lifestyles. Distorted maternal perception leads to excess weight being perceived as normal and this may prejudice treatment of child obesity. Acknowledging that the children are overweight most probably promotes greater acceptance of the need for treatment, in addition to being the necessary impetus for seeking professional assistance.

Interferência do crescimento na função pulmonar / Interference of growth in lung function

Introdução: A compreensão e a descrição da interferência do processo de crescimento e desenvolvimento na função pulmonar de indivíduos saudáveis permitem o conhecimento de parâmetros de normalidade que podem contribuir para uma melhor assistência aos pacientes com afecções respiratórias, viabilizando o acompanhamento, a prevenção e a monitorização da clínica e da progressão de doenças respiratórias. Objetivo: Esta revisão sistemática da literatura teve como objetivo analisar os artigos publicados sobre a interferência do crescimento na função pulmonar. Para isso utilizaram as palavras-chave função pulmonar, crescimento, criança, adolescente e espirometria, na busca de artigos envolvendo a avaliação da função pulmonar, por meio da espirometria de crianças e adolescentes saudáveis. Métodos: Foram selecionados artigos em inglês, francês, português e espanhol publicados nas bases de dados Medline, Lilacs e SciELO, no período de 1999 a 2012, que respeitassem o critério estabelecido. Discussão: Verificou-se que fatores como idade, peso e sexo interferem na função pulmonar da criança e do adolescente durante o crescimento. Isso porque o crescimento do corpo e dos pulmões é proporcional durante a infância, mas a partir da puberdade não é relacionado linearmente. Conclusão: Sendo assim, a idade é considerada um fator importante nas variáveis da função pulmonar, bem como a estatura, que está relacionada com o aumento das medidas dos volumes e dos fluxos para cada faixa etária. Também são descritas influências locais e geográficas sobre as variáveis antropométricas, sinalizando a necessidade de regionalização dos valores de referência, a partir de uma seleção aleatória de indivíduos sem doença pulmonar.

Experiência da atenção integral à saúde individual e familiar com enfoque na responsabilização, vínculo médico-paciente, ética e profissionalismo no Currículo Médico Integrado / The experience with comprehensive individual and family healthcare with a focus on accountability, the physician-patient relationship, ethics, and professionalism in the Integrated Medical Curriculum

INTRODUÇÃO: Visando atualizar suas práticas pedagógicas, atender as exigências da comunidade, da reestruturação do sistema de saúde e os avanços tecnológicos, a Faculdade de Ciências Médicas da Universidade Estadual de Campinas implementou uma grande reforma curricular para alunos ingressantes de 2001. OBJETIVO: Descrever uma experiência de ensino voltada à integração dos conhecimentos para atenção aos indivíduos nas diversas fases da vida, dentro da realidade de assistência primária à saúde, com ênfase no conhecimento, nas habilidades clínicas, na responsabilização e nas atitudes humanísticas e éticas. MÉTODOS: No novo currículo, a integração intra, inter e transdisciplinar foi estruturada em módulos interdepartamentais, inserção progressiva das disciplinas clínicas, contato mais cedo e progressivo do aluno com a sistema de saúde, preservando módulos integradores horizontais e verticais. A iniciação da prática clínica em Centros de Saúde tem, no quarto ano, 432 horas destinada a atendimentos clínico-ambulatoriais de assistência à criança, à mulher, ao adulto e ao idoso num contexto de saúde da família. A supervisão é realizada por professores, médicos assistentes da Faculdade e tutores selecionados entre os profissionais da rede primária de saúde. O Programa Nacional de Reorientação da Formação Profissional em Saúde Pró-Saúde facilitou a inserção e a parceria do curso de medicina com as UBS. O conteúdo teórico é integrado em seminários ministrados em dois períodos semanais e avaliado por meio de provas teóricas (conhecimento cognitivo). As habilidades e competências nas atividades clínicas são avaliadas por meio de discussões teórico-práticas quinzenais ao longo do estágio, avaliações clínicas estruturadas de atendimentos à criança, mulher e adulto, além da composição de portfólio com planilha de atendimentos totais, casos selecionados para revisão e auto-crítica de aprendizado. RESULTADOS: O módulo foi avaliado na forma de fóruns semestrais de discussão, com participação de discentes, docentes, tutores e gestores. Os grupos foram unânimes em considerar plenamente atingidos os objetivos de responsabilização, vínculo e ética, e parcialmente atingida a integração dos conteúdos teórico-práticos e trabalho em equipe. CONCLUSÃO: O currículo integrado propiciou uma visão clínica abrangente da família. Permitiu que o estudante se responsabilizasse e criasse vínculo com o paciente, entendendo a resolutividade e demandas da atenção básica à saúde por meio de sua vivência.

INTRODUCTION: In order to update its teaching practices and meet the community's needs and restructuring of the health system and technological advancements, the School of Medical Sciences at the State University in Campinas implemented a major curricular reform for incoming students in 2001. OBJECTIVE: Describe a teaching experience focused on the integration of knowledge for individual care in the various life phases, within the reality of primary healthcare, with an emphasis on knowledge, clinical skills, accountability, and humanistic and ethical attitudes. METHODS: In the new curriculum, intra-, inter-, and cross-disciplinary integration was organized in inter-departmental modules, progressive participation in clinical disciplines, students' earlier and progressive contact with the health system, maintaining horizontally and vertically integrated modules. Initiation in clinical practice in Health Centers in the fourth year of school, with 432 hours dedicated to outpatient clinical care for children, women, adults, and the elderly in the context of family health. Supervision is provided by faculty, clinical staff from the medical school, and tutors selected from among the primary healthcare system staff. The National Program for Reorientation of Professional Training in Health (Pró-Saúde) facilitated participation and partnership between the medical school and the primary care units. Theoretical content is provided in seminars during two weekly periods, with grading based on written tests (cognitive knowledge). Skills and competencies in clinical activities are evaluated by means of theoretical and practical discussions every other week throughout the internship, structured clinical evaluations of care provided to children, women, and adults, in addition to the portfolio composition with the total number of consultations, selected cases for review, and self-criticism of the learning process. RESULTS: The module was evaluated through discussion forums held once a semester with students, professors, tutors, and administrators. The groups agreed unanimously that the project had fully achieved the goals of accountability, bonds, and ethics, having partially achieved the integration between theoretical and practical course content and teamwork. CONCLUSION: The integrated curriculum fostered a comprehensive view of the family. It allowed students to take responsibility and create ties with patients, understanding the service's case-resolution capacity and demands of primary care through their direct experience.

[Factors associated with insufficient birth weight]. / Fatores associados ao peso insuficiente ao nascimento.

OBJECTIVE: To identify risk factors for insufficient birth weight, in the Brazilian city of Campinas from the Live Birth Certificates. METHODS: A cross-sectional study was conducted consulting data from 14,444 Live Birth Certificates from the year 2001. These newborn birth weights ranged from 285g to 5,890g (mean 3,142g), 65.1% of them weighted 3,000g or more, while 25.7% had insufficient weight. A sample of 12,779 term newborn from single pregnancies, with a birth weight > 2,500g was selected. Birth weight was the dependent variable and maternal, pregnancy, delivery and newborn characteristics were the independent variables. Association among variables was assessed by Chi-square test, crude odds-ratio (OR) was calculated. For adjusted odds-ratio (adjOR) values, a logistic regression model was used. RESULTS: Results showed association between insufficient birth weight and newborn of the female gender (adjOR = 1.57 [95%CI 1.44 - 1.70]), birth from primiparous mothers (adjOR = 1.47 [95%CI 1.35 - 1.60]), inadequate prenatal care (adjOR = 1.42 [95%CI 1.29 - 1.58]) and vaginal delivery (adjOR = 1.23 [95%CI 1.13 - 1.34]). CONCLUSION: The risk for insufficient birth weight was higher for female newborn, offspring of primiparous women, of women who had inadequate prenatal care and had vaginal delivery.

Fatores associados ao peso insuficiente ao nascimento / Factors associated with insufficient birth weight

OBJETIVO: Identificar, por meio das Declarações de Nascidos Vivos (DNV) de Campinas (SP), os fatores associados com peso insuficiente (PI) ao nascimento. MÉTODOS: Foram analisadas 14.444 DNV de 2001; o peso de nascimento variou de 285g a 5.890g, com média de 3.142g; 65,1 por cento das crianças nasceram com 3.000g ou mais e 25,7 por cento com PI. Selecionou-se 12.770 RNs a termo, de gestação única, com peso > 2.500g. Utilizou-se o peso de nascimento como variável dependente e as características maternas, as relacionadas à gestação, ao parto e ao recém-nascido como independentes. Para análise estatística empregou-se o teste de Qui quadrado e calcularam-se valores de odds ratio (OR) brutos. Para os valores de OR ajustados, empregou-se modelo de regressão logística. RESULTADOS: Houve associação entre PI e RNs de sexo feminino (ORaj = 1,57 [IC95 por cento 1,44 - 1,70]), mães primíparas (ORaj = 1,47 [IC95 por cento 1,35 - 1,60]), as que fizeram menos que sete consultas de pré-natal (ORaj = 1,42 [IC95 por cento 1,29 - 1,58]) e as submetidas a parto vaginal (ORaj = 1,23 [IC95 por cento 1,13 - 1,34]). CONCLUSÃO: O risco para peso insuficiente foi maior para os RN do sexo feminino, os filhos de primíparas, das mulheres que fizeram pré-natal inadequado e das submetidas a parto vaginal.

OBJECTIVE: To identify risk factors for insufficient birth weight, in the Brazilian city of Campinas from the Live Birth Certificates. METHODS: A cross-sectional study was conducted consulting data from 14,444 Live Birth Certificates from the year 2001. These newborn birth weights ranged from 285g to 5,890g (mean 3,142g), 65.1 percent of them weighted 3,000g or more, while 25.7 percent had insufficient weight. A sample of 12,779 term newborn from single pregnancies, with a birth weight > 2,500g was selected. Birth weight was the dependent variable and maternal, pregnancy, delivery and newborn characteristics were the independent variables. Association among variables was assessed by Chi-square test, crude odds-ratio (OR) was calculated. For adjusted odds-ratio (adjOR) values, a logistic regression model was used. RESULTS: Results showed association between insufficient birth weight and newborn of the female gender (adjOR = 1.57 [95 percentCI 1.44 - 1.70]), birth from primiparous mothers (adjOR = 1.47 [95 percentCI 1.35 - 1.60]), inadequate prenatal care (adjOR = 1.42 [95 percentCI 1.29 - 1.58]) and vaginal delivery (adjOR = 1.23 [95 percentCI 1.13 - 1.34]). CONCLUSION: The risk for insufficient birth weight was higher for female newborn, offspring of primiparous women, of women who had inadequate prenatal care and had vaginal delivery.