title: Nutrition Status Parameters and Hydration Status by Bioelectrical Impedance Vector Analysis Were Associated With Lung Function Impairment in Children and Adolescents With Cystic Fibrosis.
abstract: BACKGROUND
  (1) To compare nutrition and hydration status between a group of children/adolescents with cystic fibrosis (CFG; n = 46; median age, 8.5 years) and a control group without cystic fibrosis (CG). (2) To examine the association of nutrition and hydration status with lung function in the CFG.
  
  
  METHODS
  A cross-sectional study. Nutrition screening, anthropometric parameters, and bioelectrical impedance analysis (BIA) were assessed. The z scores for body mass index for age, height for age, mid upper arm circumference, triceps and subscapular skinfold thickness, mid upper arm muscle area, resistance/height, and reactance/height were calculated. Bioelectrical impedance vector analysis was conducted. Forced expiratory volume in 1 second <80% was considered lung function impairment. An adjusted logistic regression was applied (P < .05).
  
  
  RESULTS
  In the CFG, lung function impairment was observed in 51.1%. All anthropometric parameters were lower, and the mean z-resistance/height and z-reactance/height were higher in the CFG (P < .05) compared with the CG. In the CFG, 43% were severely/mildly dehydrated, while none were in the CG (P = .007). In the CFG, there was an association between high nutrition risk-via nutrition screening (odds ratio [OR], 22.28; P < .05), lower values of anthropometric parameters, higher z-resistance/height (OR, 2.23; P < .05) and z-reactance/height (OR, 1.81; P < .05), and dehydration (OR, 4.94; P < .05)-and lung function impairment.
  
  
  CONCLUSIONS
  The CFG exhibited a compromised nutrition status assessed by anthropometric and BIA parameters. Nutrition screening, anthropometric and BIA parameters, and hydration status were associated with lung function.
authors.affiliation: Department of Nutrition and Postgraduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Brazil.
authors.forename: Daniela Barbieri
authors.initials: DB
authors.lastname: Hauschild
authors.affiliation: Joana de Gusmão Children's Hospital, Florianópolis, Brazil.
authors.forename: Eliana
authors.initials: E
authors.lastname: Barbosa
authors.affiliation: Department of Nutrition and Postgraduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Brazil.
authors.forename: Emilia Addison Machado
authors.initials: EA
authors.lastname: Moreira
authors.affiliation: Joana de Gusmão Children's Hospital, Florianópolis, Brazil.
authors.forename: Norberto
authors.initials: N
authors.lastname: Ludwig Neto
authors.affiliation: Joana de Gusmão Children's Hospital, Florianópolis, Brazil.
authors.forename: Vanessa Borges
authors.initials: VB
authors.lastname: Platt
authors.affiliation: Joana de Gusmão Children's Hospital, Florianópolis, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Piacentini Filho
authors.affiliation: Department of Nutrition and Postgraduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Brazil.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Wazlawik
authors.affiliation: Department of Nutrition and Postgraduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Brazil yara.moreno@ufsc.br.
authors.forename: Yara Maria Franco
authors.initials: YM
authors.lastname: Moreno
mesh_terms: D000293:Adolescent; D001823:Body Composition / Q000502:physiology*; D001834:Body Water / Q000502:physiology*; D002648:Child; D003430:Cross-Sectional Studies; D003550:Cystic Fibrosis / Q000503:physiopathology*; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D009752:Nutritional Status / Q000502:physiology*
keywords: cystic fibrosis; electrical impedance; forced expiratory volume; nutrition assessment; nutrition status; pediatrics