Wilderness Sports Conditioning

Online Store
Contact Us
About Us
Site Map

NEW Mt Rainier Video

Train Today for
Tomorrow's Challenges

More Training Info > Research - Dehydration Effects on Aerobic Performance

Hypohydration Adversely Affects Lactate Threshold in Endurance Athletes

Original research done by Robert K. Kenefick, Nicholas V. Mahood, Craig O. Mattern, Robert Kertzer, and Timothy J. Quinn at the Department of Kinesiology, University of New Hampshire in Durham, New Hampshire. Published in the National Strength and Conditioning Association's The Journal of Strength and Conditioning Research Volume 16 Number 1, Feb 2002.

This study looked at the effect of hypohydration (dehydration) on lactate threshold (the point at which lactic acid builds faster than can be removed). Fourteen Nordic ski team members (8 men and 6 women) were tested on a treadmill in two states, normal hydration and exercise-induced dehydration (4% body mass decrease from pre-exercise body mass). The researchers found that while perceived exertion of exercise was the same during both states the subjects hit their lactate threshold much sooner and at a lower intensity during the hypohydration state compared with the normal hydration state.

What does this mean?

The results of this study indicate that when a person is on a multi-day climb or hike that performance will be lowered following a day where fluids were lost and not replaced. This becomes even more important as you get to higher elevations. One way climbers on Denali keep hydrated is by consuming hot-liquid based food for much of their calories. For example, during the dinner time they might start out with hot chocolate for a first course, have soup for the second, follow that with the main course that might be a stew (high liquid content) and finally, finish with hot tea or more hot chocolate.


Rate this page       Bookmark and Share

Hiking   Mountaineering   Climbing   Snow Sports   Paddling   Family   More Training Info   Contact   About Us   Home  
� 2020 Body Results   Legal Disclaimer   Privacy Policy   Updated 8/2020