MECHANISM OF ENHANCED COLD TOLERANCE BY AN EPHEDRINE-CAFFEINE MIXTURE IN HUMANS

Authors
  1. Vallerand, A.L.
  2. Jacobs, I.
  3. Kavanagh, M.F.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The influence of a thermogenic mixture of ephedrine- (1mg/kg) caffeine (2.5 mg/kg) on cold tolerance was investigated in nine healthy young male subjects during two seminude exposures to cold air (3 h at 10C). The results demonstrate that the ingestion of an ephedrine-caffein mixture improves cold tolerance in humans by significantly increasing body temperatures in the cold. These improvements were not caused by an increased conservation of heat but by a greater energy expenditure, which appears to be dependent on an enhanced carbohydrate utilization.
Report Number
DCIEM-89-P-21 — Reprint; Research Paper
Date of publication
01 Jan 1989
Number of Pages
7
Reprinted from
J Applied Physiology, vol 67, no 1, 1989, p 438-444
DSTKIM No
89-03914
CANDIS No
61806
Format(s):
Hardcopy;Originator's fiche received by DSIS

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