HOME >> BIOLOGY >> NEWS
A water tale for all seasons: When it comes to hydration and exercise, the system works

on) may better preserve the extravascular fluid volume, accounting for the improved TBW (total body water), compared with water alone. This extravascular 'reserve' could later be called on during exercise or heat stress, when hydration becomes important to performance and thermoregulation," the paper noted.

Catherine O'Brien, lead author of the glycerol study, said "there's a window of two to six hours where GI could be beneficial. That's a narrow niche where it might be useful for instance for soldiers on short-range patrol with inadequate access to rehydration." The paper noted that the experiments supported earlier findings "suggesting that glycerol induced hyperhydration through renal reabsorption of water and glycerol. Finally, this study provides insight into the hormonal mechanisms of cold-induced diuresis and fluid shifts due to hyperhydration."

Next steps

"Whether the degree of hyperhydration" in the current study "is sufficient to improve physical performance in the cold or thermoregulation during subsequent body warming due to exercise or heat exposure remains to be demonstrated," the paper noted.

In addition, O'Brien said: "We learned previously that hydration doesn't seem to affect susceptibility to frostbite. But soldiers and outdoorsmen are more affected by their hands and fingers getting stiff. We're going to look at how physical performance such as manual dexterity can better be maintained in the cold."

Some dehydration shows no performance effect in cold, but does as temperature rises

It's well recognized that athletes perform progressively better as the temperature falls from hot to cool. It is also known that dehydration worsens performance in the heat, but its effect in milder environments is not well understood. A USARIEM team led by Samuel N. Cheuvront found that dehydration by 3% of body weight had little adverse impact on cycling performance in the cold (36F), but markedly red
'"/>


2-Sep-2005


Page: 1 2 3 4

Related biology news :

1. New system of wastewater treatment could reduce the size of treatment plants by half
2. Space-borne sensors help Africa tackle water shortage problems
3. Chickens dieting to help Delaware waterways
4. New aerogels could clean contaminated water, purify hydrogen for fuel cells
5. Seawater intrusion is the first cause of contamination of coastal aquifers
6. Study finds contaminated water reaching Floridas offshore keys
7. Alternative farming cleans up water
8. Masquerading in murky waters
9. The origin of perennial water-ice at the South Pole of Mars
10. Loss of hemlocks will affect water dynamics in southern Appalachian forests
11. Biocontrol of invasive water hyacinth contributes to socioeconomic and health improvements in Africa

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... platform specifically designed for life science researchers to analyze and interpret datasets, ... Franklin, who made a major contribution to the discovery of the double-helix ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
Cached News: