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

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

Try 2 weeks free now

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.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy unlimited access and
personalized recommendations from
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $40/month

Try 2 weeks free now

Explore the DeepDyve Library

How DeepDyve Works

Spend time researching, not time worrying you’re buying articles that might not be useful.

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

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.

See the journals in your area

Simple and Affordable Pricing

14-day free trial. Cancel anytime, with a 30-day money-back guarantee.

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Best Deal — 25% off

Annual Plan

  • All the features of the Professional Plan, but for 25% off!
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

billed annually