Skip Navigation LinksHome > April 1987 - Volume 19 - Issue 2 > Increased plasma [beta]-endorphin immunoreactivity in scuba...
Medicine & Science in Sports & Exercise:
ORIGINAL INVESTIGATIONS: PDF Only

Increased plasma [beta]-endorphin immunoreactivity in scuba divers after submersion.

ADAMS, MICHAEL L.; EASTMAN, NORRIS W.; TOBIN, RICHARD P.; MORRIS, DALE L.; DEWEY, WILLIAM L.

Collapse Box

Abstract

S: ADAMS, M. L., N. W. EASTMAN, R. P. TOBIN, D. L. MORRIS, and W. L. DEWEY. Increased plasma [beta]-endorphin immunoreactivity in scuba divers after submersion. Med. Sci. Sports Exerc, Vol. 19, No. 2, pp. 87-90, 1987. After submersion under water in a motionless state of neutral buoyancy, scuba divers frequently report feelings of well-being or euphoria similar to those reported after strenuous exercise. Since strenuous exercise is associated with a stress-related increase in plasma [beta]-endorphin immunoreactivity ([beta]-EIR), this study was undertaken to measure plasma [beta]-EIR after submersion in a state of neutral buoyancy under conditions that do not involve strenuous exercise or other extreme stresses. Plasma [beta]-EIR was measured by radioimmunoassay in male scuba divers before and immediately after remaining motionless 10 ft under water in a state of neutral buoyancy. A significant (P < 0.01) increase in plasma [beta]-EIR was found under these conditions. Venipuncture and scuba breathing out of the water did not alter [beta]-EIR levels. These results indicate that the milder stress associated with submersion in a state of neutral buoyancy involves an increase in plasma [beta]-EIR similar to that caused by severe stress.

(C)1987The American College of Sports Medicine

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us