Accession Number:

ADA172931

Title:

Sleep Deprivation and Exercise Tolerance.

Descriptive Note:

Final rept. 1 Feb 81-31 Jan 86,

Corporate Author:

INDIANA UNIV FOUNDATION INDIANAPOLIS RESEARCH AND SPONSORED PROGRAMS

Personal Author(s):

• Martin,Bruce J.

Report Date:

1986-01-01

Pagination or Media Count:

11.0

Abstract:

Acute sleep deprivation radically alters mood and sleepiness. It blunts, as well, the ability to perform long-term maximal exercise. These effects are more evident after 50 than after 25 hours without sleep. Sleeplessness does not, however, change any measured physiological responses to exercise. Stress hormone levels, that is beta-endorphin and cortisol, are the same during exercise with or without prior sleep. Similarly, exercise heart rate, ventilation, and blood pressure, and blood lactate levels, are identical under the two conditions. We conclude that sleep loss hampers physical performance primarily through psychological mechanisms.

Descriptors:

• *SLEEP DEPRIVATION
• *TOLERANCES(PHYSIOLOGY)
• *EXERCISE(PHYSIOLOGY)
• LOW TEMPERATURE
• HORMONES
• PERFORMANCE(HUMAN)
• STRESS(PSYCHOLOGY)
• STRESS(PHYSIOLOGY)
• VENTILATION
• EXPOSURE(PHYSIOLOGY)
• CATECHOLAMINES
• HEART RATE
• LACTATES
• ENDURANCE(PHYSIOLOGY)
• BLOOD CHEMISTRY
• CORTISOL

Subject Categories:

• Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE