“Whoa! It's like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Get 2 Weeks Free

Influence of cold, exercise, and caffeine on catecholamines and metabolism in men

PREMILA University SATHASIVAM, KEN W. MAcNAUGHTON 2 WI, Canada of Human Biology, of Guelph, Guelph, Ontario NIG GRAHAM, TERRY E., PREMLA SATHASIVAM, KEN W. MACNAUGHTON. Influence of , on catecholamines metabolism in men. J. Appl. Physiol. 70(5): 2052-2058, 1991.-Recently we found that ingestion did not enhance either thermal or fat metabolic responses to ing in cold air, despite an increasein plasma epinephrine free fatty acids. Theophylline, another methylxanthine, has been shown to be effective during but not at during cold stress.Therefore we hypothesized that ingestionbefore in cold air would have a thermal-metabolic impact by increasing fat metabolism increasing oxygen consumption. Young adult men (n = 6) who did not normally have in their diet performed four double-blind trials. Thirty minutes after ingesting (dextrose, 5 mg/ kg) or (5 mg/kg) they either d(60 W) or ed for 2 h in 5°C air. Cold increased(P < 0.05)plasmanorepinephrine while both increased(P < 0.05) epinephrine. Serum free fatty acids glycerol were increased, but there were no differencesbetween or . had no influence on either respiratory exchange ratio or oxygen consumption either at or during .The trials did not significantly warm the body, they resulted in higher plasma norepinephrine concentrations lower meanskin temperatures http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Loading next page...

You're reading a free preview. Subscribe to read the entire article.

And millions more from thousands of peer-reviewed journals, for just $40/month

Get 2 Weeks Free

To be the best researcher, you need access to the best research

  • With DeepDyve, you can stop worrying about how much articles cost, or if it's too much hassle to order — it's all at your fingertips. Your research is important and deserves the top content.
  • Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.
  • All the latest content is available, no embargo periods.

Stop missing out on the latest updates in your field

  • We’ll send you automatic email updates on the keywords and journals you tell us are most important to you.
  • There is a lot of content out there, so we help you sift through it and stay organized.