Navigation Links
Large Fluid Intake Won’t Help to Keep Cool for Marathon Runner

Gulping down several litres of water to keep oneself cool may not be a best option, as large fluid intake won’t make much difference, warns scientists for marathon runners//.

With today's temperatures expected to reach 19 degrees, the average runner will potentially lose almost a litre of sweat every hour and reach a body temperature of over 39 degrees, two degrees above normal. The sporting community has long assumed that drinking large amounts of water helps to keep the body's temperature down, which improves performance. A recent study led by Dr Chris Byrne of the University of Exeter shows that the level of fluid intake has absolutely no effect on body temperature or performance.

Dr Chris Byrne, sport scientist from the University of Exeter said: 'We'll see many of today's Marathon runners clutching bottles of water. The conventional view among both scientists and the fitness media is that fully replacing sweat losses by fluid intake during exercise will reduce an athlete's body temperature and improve performance. Our research, which for the first time measured internal body temperature continuously during an actual race, revealed no evidence that fluid intake makes runners cooler or improves performance.'

Dr Byrne and his team monitored a group of male runners taking part in the Singapore Army Half-Marathon, a 21km race that took place in temperatures between 26 and 29 degrees Celsius and 75-90% relative humidity. The night before the race, the runners ingested telemetric temperature sensors, which contain temperature-sensitive quartz crystal oscillators that vibrate at a frequency relative to its surrounding temperature and communicate the temperature by radio wave to a recording device worn by the runner. For previous studies, body temperatures have been taken after races, but this was the first time that researchers have monitored body temperatures continuously throughout a race.

Over half the runners reached body te mperatures exceeding 40 degrees and all lost an average of 1.5 litres of sweat per hour. Runners replaced between 6% and 73% of their sweat losses during the race. There was no relationship between the amount of fluid each runner consumed, his body temperature and overall performance in the race. The highest body temperature observed (41.7°C) was recorded from a runner replacing the greatest amount of his sweat losses (73%) and therefore being the least dehydrated of the study sample.

Dr Byrne concludes: 'I would encourage those people taking part in today's Marathon to be well hydrated before the race, but not to feel they need to drink water throughout the event. Listen to your body and drink if you feel thirsty, but drinking several litres of water will not help you run any faster.'

Source-Eurekalert/
'"/>




Related medicine news :

1. The Link Between Larger Birth Weight And Cancer Risk
2. Worlds Largest Cord Blood Bank to be started in India
3. India Has The Oldest And Largest Collection Of Preserved Mosquitoes – Mosquito Museu
4. Fear Of Dengue Epidemic Looms Large: Fever Kills Five in Pakistan
5. Visualization Found To Be Largely Dependent On The Brain
6. Large Scale Study On H5N1 Conducted
7. Large Scale Multiple Sclerosis Vaccine Trial to Be Initiated By PharmaFrontiers
8. Pre-eclampsia Pronounced With Intake of Vitamins in Large Doses
9. Large Ambulances To Handle Obese patients In Vegas
10. Heart Related Problems-The Largest Killers In Andhra Pradesh
11. Large scale culling of poultry effected at Cote dIvoire following bird flu outbreak.
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/26/2017)... ... 2017 , ... Leading CEOs from biotech, pharmaceutical, and healthcare ... at The Four Seasons Hotel Boston. , The Boston CEO Conference is ... access to key decision makers who influence deal making and investment. Attendees gain ...
(Date:5/26/2017)... Plano, Texas (PRWEB) , ... May 26, 2017 , ... ... Cord Stimulation System, a powerfully versatile, patient-centric spinal cord stimulation system. The Nuvectra™ Algovita ... , “We are pleased to be the first in Arkansas to introduce the ...
(Date:5/26/2017)... ... May 26, 2017 , ... A new analysis of ... the healthiest seniors are located in the Midwest. With the average cost of healthcare ... people are concerned with both the quality and affordability of where they live. An ...
(Date:5/26/2017)... Nevada (PRWEB) , ... May 26, 2017 , ... ... produce the first ever copper, antimicrobial, mesh back 24/7 task chair specifically designed ... conference applications. “We are thrilled to partner with Cupron® to provide customers ...
(Date:5/26/2017)... ... ... After raising nearly $30,000 on Kickstarter , about three-times its original ... discounted crowdfunding price on Indiegogo . , “Along with creating an anti-stress gadget ... a fidget toy to the market that was made of superior quality and wouldn’t ...
Breaking Medicine News(10 mins):
(Date:5/26/2017)... 2017  Endo International plc (NASDAQ: ENDP ) ... will represent the Company in a fireside chat at Goldman ... June 13, 2017 at 10:40 a.m. PT / 1:40 p.m. ... Rancho Palos Verdes, CA. ... be available on the Company,s website at http://www.endo.com/investors/overview . ...
(Date:5/23/2017)... PLEASANTON, Calif. , May 23, 2017 /PRNewswire/ ... world,s most innovative medical devices for pressure ulcer ... at the American Association of Critical Care Nurses, ... Houston May 22-25. The Leaf Patient ... designed specifically for the hospital environment.  The system ...
(Date:5/18/2017)... , May 18, 2017  Two Bayer U.S. Pharmaceutical ... (HBA) during its recent 28 th Woman ... The event showcases HBA,s longstanding mission of furthering the ... healthcare. Cindy Powell-Steffen , senior director ... Radiology division, and Libby Howe , a regional ...
Breaking Medicine Technology: