NCT02484846

Impaired Vigilance, and Its Effects on Cognition and Behavior

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (actual)
• Sponsor: Stanford University · Academic / Other
• Sex: All
• Age: 18 Years – 45 Years
• Healthy volunteers: Accepted

Summary

Fifty healthy, young participants (10 male, 40 female) completed two 3-hour study sessions that were at least five days apart. The first session was a baseline. The sleep intervention took place on the night prior to Session 2, where the amount of time in bed was manipulated to be 60-130% of the individual's habitual sleep time. Within both sessions, subjective (Stanford Sleepiness Scale, SSS) and objective (Psychomotor Vigilance Test, PVT) alertness were measured. During the middle of each session, a 40-minute ad libitum meal opportunity allowed participants to eat from eight different food items. Food healthfulness, caloric density, distribution and number of calories were measured and compared to alertness levels.

Conditions

• Sleep Deprivation
• Feeding Behavior

Interventions

Type	Name	Description
BEHAVIORAL	Time in bed	Habitual time spent in bed for the purpose of sleep was determined at baseline. This was used to calculated the experimental time in bed the subject was to spent on the one night prior to the second lab visit.

Timeline

• Start date: 2011-02-01
• Primary completion: 2012-03-01
• Completion: 2012-03-01
• First posted: 2015-06-30
• Last updated: 2015-06-30