title: Body Mass Index Moderates the Association between Sleep Quality and Vigilance on a Test of Inhibitory Control.
abstract: OBJECTIVE
  Sleep problems are common among college students and related to numerous adverse outcomes including impaired cognitive performance. Obesity may confer an elevated risk of cognitive deficits with poor sleep given its relationship with poorer sleep quality and impaired cognition. Thisstudy examined whether the relationship between reduced sleep quality and poorer vigilance and inhibitory control were moderated by elevated body mass index (BMI).
  
  
  METHODS
  Participants were 85 college students who completed a computerized task of inhibitory control that required vigilance (go/no-go [GNG] task) and the Pittsburgh Sleep Quality Index, a measure of sleep quality.
  
  
  RESULTS
  Poor sleep quality was observed in 63.5% of the sample and was related to more omission errors on the GNG task and increased BMI. Results further revealed that BMI moderated the relationship between sleep quality and performance on the GNG task such that individuals in the severely obese range of BMI had more omission errors with poorer sleep quality, while there was no association between sleep and GNG performance among normal weight and overweight individuals.
  
  
  CONCLUSIONS
  These findings highlight the likely contribution of obesity to decreased vigilance with poor sleep. Future research is needed to confirm these findings using objective measures of sleep quality (e.g., actigraphy, polysomnography).
authors.affiliation: a Department of Psychological Sciences , Kent State University , Kent , OH , USA.|b Department of Psychiatry , Rhode Island Hospital , Providence , RI , USA.
authors.forename: Rachel
authors.initials: R
authors.lastname: Galioto
authors.affiliation: c Center for Alcohol and Addiction Studies , Brown University , Providence , RI , USA.
authors.forename: William V
authors.initials: WV
authors.lastname: Lechner
authors.affiliation: a Department of Psychological Sciences , Kent State University , Kent , OH , USA.
authors.forename: Jonah
authors.initials: J
authors.lastname: Meister
authors.affiliation: a Department of Psychological Sciences , Kent State University , Kent , OH , USA.
authors.forename: Micah
authors.initials: M
authors.lastname: Wright
authors.affiliation: a Department of Psychological Sciences , Kent State University , Kent , OH , USA.
authors.forename: John
authors.initials: J
authors.lastname: Gunstad
authors.affiliation: a Department of Psychological Sciences , Kent State University , Kent , OH , USA.
authors.forename: Mary Beth
authors.initials: MB
authors.lastname: Spitznagel
mesh_terms: D000328:Adult; D015992:Body Mass Index; D003072:Cognition Disorders / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D009433:Neural Inhibition / Q000502:physiology*; D009483:Neuropsychological Tests / Q000592:standards*; D009765:Obesity / Q000150:complications*; D017286:Polysomnography / Q000379:methods*; D012890:Sleep / Q000502:physiology*; D055815:Young Adult
keywords: Cognition.; College students; Obesity; Sleep quality; Vigilance