Navigation Links
Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

Drinking water during a long-distance race may do serious harm rather than keep you safe from injury if you're drinking too much, according to a cardiologist at UT Southwestern Medical Center.

Runners or any long-distance athletes who drink too much water during a race could put themselves at jeopardy for developing hyponatremia, a condition marked by a loss in the body's sodium content that can result in physical symptoms such as lethargy, disorientation, seizures and even respiratory distress.

In a perspectives article in the current issue of The New England Journal of Medicine, Dr. Benjamin Levine, professor of internal medicine at UT Southwestern, said competitive runners are less likely to suffer from hyponatremia.

"Those who are running to finish the race very fast don't have time to drink a lot of water along the way," Dr. Levine said. "Those who are not running the race competitively tend to stop at every water station and take a drink. Over the course of a long race, they can dilute themselves."

In addition popular sports drinks don't always include enough sodium to offset the body's loss of the mineral during exercise. The drinks often carry more water with smaller concentrations of salts than are normally found in the human body; therefore, they do not replace salts adequately, said Dr. Levine, medical director of the Institute for Exercise and Environmental Medicine, a collaboration between UT Southwestern and Presbyterian Hospital of Dallas.

The NEJM perspectives article accompanies a study in the same journal by researchers at Children's Hospital in Boston and Harvard Medical School. The study evaluates the blood concentration of sodium in runners both before and after a long race and examines their risk factors for developing hyponatremia. It recommends individualized fluid-replacement consumption by all competing athletes.

"Researchers of the study found a surprisingly large number of runners had actuall y gained weight during the race and their sodium concentrations were very low - some were dangerously low," Dr. Levine said. "The recommendations listed in the study that fluid-replacement schedules be individualized for all athletes competing in long-distance events should be taken seriously by all competitors."

People lose water and salts from their bodies at different rates during exercise, he said. Heat and humidity also play a role in the rate of this loss. Calculating fluid loss is as simple as weighing yourself before and after exercise and comparing that number to the amount of fluid you consumed throughout.

"All serious distance athletes should find out what their rate of fluid loss is and individualize their fluid intake prior to a distance event," Dr. Levine said. "It's also good to accept some mild dehydration during a long race. There are plenty of Web sites available now that show how to customize your fluid intake."

He also added that taking along salty snacks to eat during the race is a good way of combating hyponatremia. Generally, athletes of all types are instructed prior to activities that water consumption is necessary to prevent illness from heat and to maintain performance levels.

It is also clear, however, that fixed global recommendations for fluid replacement may not be optimal for individual athletes of different body types and with varying degrees of training and heat acclimatization.


'"/>

Source:


Related biology news :

1. New species from old data
2. Same mutation aided evolution in many fish species, Stanford study finds
3. Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection
4. Reservoirs may accelerate the spread of invasive aquatic species, researchers say
5. Small species back-up giant marsupial climate change extinction claim
6. Aggressive aquatic species invading Great Lakes
7. Internet viruses help ecologists control invasive species
8. An (ecological) origin of species for tropical reef fish
9. Ancient DNA helps clarify the origins of two extinct New World horse species
10. Invasive parasite destroying fish species
11. Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/19/2016)... , UAE, April 20, 2016 ... be implemented as a compact web-based "all-in-one" system solution ... the biometric fingerprint reader or the door interface with ... of modern access control systems. The minimal dimensions of ... ID readers into the building installations offer considerable freedom ...
(Date:4/13/2016)... -- IMPOWER physicians supporting Medicaid patients in Central ... in telehealth thanks to a new partnership with higi. ... patients can routinely track key health measurements, such as ... when they opt in, share them with IMPOWER clinicians ... retail location at no cost. By leveraging this data, ...
(Date:3/23/2016)... , March 23, 2016 ... Interesse erhöhter Sicherheit Gesichts- und Stimmerkennung mit ... Inc. (NASDAQ: MESG ), ein ... dass das Unternehmen mit SpeechPro zusammenarbeitet, um ... der Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, im ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... ... Scientists at the University of Athens say they have evidence that the variety ... that could lead to one good one. Surviving Mesothelioma has just posted an article ... team evaluated 98 mesothelioma patients who got a second kind of drug ...
(Date:5/25/2016)... ... May 25, 2016 , ... Biohaven Pharmaceutical Holding Company Ltd. ... the company’s orphan drug designation request covering BHV-4157 for the treatment of Spinocerebellar ... FDA. , Spinocerebellar ataxia is a rare, debilitating neurodegenerative disorder that is ...
(Date:5/24/2016)... ... May 24, 2016 , ... Last week, Callan Capital, ... executives and entrepreneurs, held The Future of San Diego Life Science event at the ... life science community attended the event with speakers Dr. Rich Heyman, former CEO of ...
(Date:5/23/2016)... ... May 23, 2016 , ... PrecisionAg® Media has released ... and Beyond. The paper outlines the key trends that are creating both opportunities ... witnessed a lot of highs and lows as the precision agriculture market has ...
Breaking Biology Technology: