title: Neck circumference as a new anthropometric indicator for prediction of insulin resistance and components of metabolic syndrome in adolescents: Brazilian Metabolic Syndrome Study.
abstract: OBJECTIVE
  To evaluate the correlation between neck circumference and insulin resistance and components of metabolic syndrome in adolescents with different adiposity levels and pubertal stages, as well as to determine the usefulness of neck circumference to predict insulin resistance in adolescents.
  
  
  METHODS
  Cross-sectional study with 388 adolescents of both genders from ten to 19 years old. The adolescents underwent anthropometric and body composition assessment, including neck and waist circumferences, and biochemical evaluation. The pubertal stage was obtained by self-assessment, and the blood pressure, by auscultation. Insulin resistance was evaluated by the Homeostasis Model Assessment-Insulin Resistance. The correlation between two variables was evaluated by partial correlation coefficient adjusted for the percentage of body fat and pubertal stage. The performance of neck circumference to identify insulin resistance was tested by Receiver Operating Characteristic Curve.
  
  
  RESULTS
  After the adjustment for percentage body fat and pubertal stage, neck circumference correlated with waist circumference, blood pressure, triglycerides and markers of insulin resistance in both genders.
  
  
  CONCLUSIONS
  The results showed that the neck circumference is a useful tool for the detection of insulin resistance and changes in the indicators of metabolic syndrome in adolescents. The easiness of application and low cost of this measure may allow its use in Public Health services.
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Cleliani de Cassia
authors.initials: Cde C
authors.lastname: da  Silva
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Mariana Porto
authors.initials: MP
authors.lastname: Zambon
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Ana Carolina J
authors.initials: AC
authors.lastname: Vasques
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Ana Maria de B
authors.initials: AM
authors.lastname: Rodrigues
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Daniella Fernandes
authors.initials: DF
authors.lastname: Camilo
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Maria Ângela R de G M
authors.initials: MÂ
authors.lastname: Antonio
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Roberta Soares L
authors.initials: RS
authors.lastname: Cassani
authors.affiliation: Faculdade de Ciências Médicas, Unicamp, Campinas, SP, Brasil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Geloneze
mesh_terms: D000293:Adolescent; D001837:Body Weights and Measures; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007333:Insulin Resistance; D008297:Male; D024821:Metabolic Syndrome / Q000175:diagnosis*; D009333:Neck / Q000033:anatomy & histology*; D011237:Predictive Value of Tests; D055815:Young Adult