Accession Number : AD0292947

Title :   THE SWEAT EXCRETION OF NITROGEN IN RELATION TO BALANCE, ENVIRONMENT AND PHYSICAL ACTIVITY

Corporate Author : ARMY MEDICAL RESEARCH AND NUTRITION LAB DENVER COLO

Personal Author(s) : CONSOLAZIO,C. FRANK ; NELSON,RICHARD A.

Report Date : 01 OCT 1962

Pagination or Media Count : 1

Abstract : The results of two experiments at three environmental temper tures and wo levels of phy ical activity s o t t a co sid rable amount of nitrogen is lost in sweat, under conditions that produce profuse sweating. These values average 149, 189 and 241 mg/hour during exposures to temperatures of 70, 85 and 100 F. The free amino acids were approximately one-half of these nitrogen losses, with lysine xcretion accounting for approximately 15% of the amino acid losses. The nitrogen losses in sweat of men performing a minimum of physical activity in extreme heat are reduced af r ccli i ion o o approximately 200 mg/hour. I was obs rve t t i rog lo ses in sweat will increase with an increase in physical activity and sweat rate. These findings are very important since they show an additional nitrogen loss that was ignored in many balance studies. Past tudies w ere equilibrium was apparen ly a t i d should be re valu e in he ligh of these dermal nitrogen losses. (Author)

Descriptors :   *AMINO ACIDS, *NITROGEN, *PERSPIRATION, EMOTIONS, EXERCISE(PHYSIOLOGY), HEAT, PHYSICAL FITNESS, PROTEINS, SKIN(ANATOMY)

Distribution Statement : APPROVED FOR PUBLIC RELEASE