title: Applicability of predictive equations for resting energy expenditure in obese patients with obstructive sleep apnea.
abstract: OBJECTIVE
  To investigate the applicability of predictive equations for resting energy expenditure (REE) in obese individuals with obstructive sleep apnea (OSA) and the effects of OSA severity on REE.
  
  
  METHODS
  Twenty-nine obese men, 41.5 ± 7 years old, with moderate and severe OSA were recruited. All subjects were submitted to a clinical polysomnography, body composition, and indirect calorimetry measurements. REE was also predicted by three different equations: Harris and Benedict (1919), Cunningham (1990), and DRI (2002).
  
  
  RESULTS
  No effects of OSA severity on REE were found. The measured REE (2416.0 ± 447.1 kcal/day) and the REE predicted by equations were different from each other (F = 2713.88; p < 0.05): Harris and Benedict (2128.0 ± 245.8 kcal/day), Cunningham (1789.1 ± 167.8 kcal/day) and DRI (2011.1 ± 181.4 kcal/day). Pearson correlations showed a moderate positive correlation between the REE measured and predicted by all equations.
  
  
  CONCLUSIONS
  Our findings suggest that predictive equations for REE underestimate the energy expenditure in obese patients with sleep apnea. Also, no effects of OSA severity on REE were found.
authors.affiliation: Universidade Federal de São Paulo (Unifesp), Psicobiologia, São Paulo, SP, Brasil.
authors.forename: Mariana Pantaleão
authors.initials: MP
authors.lastname: Del Re
authors.affiliation: Universidade Federal de São Paulo (Unifesp), Psicobiologia, São Paulo, SP, Brasil.
authors.forename: Camila Maria de
authors.initials: CM
authors.lastname: Melo
authors.affiliation: Universidade Federal de São Paulo (Unifesp), Biociências, São Paulo, SP, Brasil.
authors.forename: Marcus Vinicius Dos
authors.initials: MVD
authors.lastname: Santos
authors.affiliation: Universidade Federal de São Paulo (Unifesp), Psicobiologia, São Paulo, SP, Brasil.
authors.forename: Sergio
authors.initials: S
authors.lastname: Tufik
authors.affiliation: Faculdade de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brasil.
authors.forename: Marco Túlio de
authors.initials: MT
authors.lastname: Mello
mesh_terms: D000328:Adult; D000465:Algorithms; D000704:Analysis of Variance; D000886:Anthropometry; D001823:Body Composition / Q000502:physiology; D002153:Calorimetry, Indirect / Q000379:methods; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000378:metabolism* / Q000503:physiopathology*; D017286:Polysomnography; D011237:Predictive Value of Tests; D012016:Reference Values; D015203:Reproducibility of Results; D012146:Rest / Q000502:physiology*; D012720:Severity of Illness Index; D020181:Sleep Apnea, Obstructive / Q000378:metabolism* / Q000503:physiopathology*; D013997:Time Factors