Metabolic Rate During Sleep.
Abstract
Twenty men between 19 and 63 years of age were studied for two nights of sleep by recording electroencephalography, electrooculography, and electromyography in standard configuration to allow scoring for sleep stages 1, 2, 3, 4, and rapid eye movement. At the same time oxygen consumption was measured continuously with a Metabolic Rate Monitor. Heart rate was recorded continuously, and the overnight decrease in rectal temperature and body weight was determined. Because of a clear 'first night effect,' second night data were selected for analysis. There was no evident relationship between sleep stage and oxygen consumption. Mean oxygen consumption for the 20 men was 275 ml/min plus or minus 100 ml/min(standard deviation). Heart rates were found to average as low as 49 and as high as 71 beats/min. One surprising observation was that most of the older subjects exhibited periodic breathing at various times during the night. Nine of 11 men older than 45 had bouts of apnea alternating with mild hyperventilation. None of the nine men younger than 45 showed it. Periodic breathing occurred primarily during sleep stage 2, less often during REM and stage 1. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1973
- Accession Number
- AD0771024
Entities
People
- Mahlon Hiestand
- Paul Webb