Hydration Question

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06-01-15 | 07:23 AM

#26

wphamilton

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Joined: Apr 2011

Posts: 15,278

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From: Alpharetta, GA

Bikes: Nashbar Road

Quote:

Originally Posted by DaveLeeNC

...
Me loaded up (including two full 22 oz. water bottles, shoes, helmet, clothes, etc) was 165.2 pounds. Me after the ride with all the same stuff (except one water bottle was empty) was 154.3 pounds....

Dave that's a lot of water lost for your body weight, about 9.5 pounds. I'd start to be concerned about dehydration with anything over around 5% of body weight. Take care with these experiments.

06-01-15 | 07:25 AM

#27

DaveLeeNC

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Joined: Jan 2011

Posts: 1,726

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From: Pinehurst, NC, US

Bikes: 2020 Trek Emonda SL6, 90's Vintage EL-OS Steel Bianchi with 2014 Campy Chorus Upgrade

Quote:

Originally Posted by CafeVelo

On my last group ride (40 miles) I drained four 24 oz bottles, I could have used at least one more. There's no refill point on the ride, so what you leave with is what you get. The first time I did the ride I had a bottle and a half, and was out less than halfway in. By the time I got home I thought I was going to pass out, since I'd stopped sweating long ago. It took me a few days to get completely hydrated again. Most of the other riders had two bottles and didn't run out of water, but I'll sweat sitting still on a cool day.

I notice that you, like me, run a Campy Chorus groupset. Maybe this is an equipment problem :-)

dave

06-01-15 | 09:43 AM

#28

Willbird

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Joined: Jun 2014

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From: Very N and Very W Ohio Williams Co.

Bikes: 2001 Trek Multitrack 7200, 2104 Fuji Sportif 1.5

Quote:

Originally Posted by wphamilton

Dave that's a lot of water lost for your body weight, about 9.5 pounds. I'd start to be concerned about dehydration with anything over around 5% of body weight. Take care with these experiments.

I just weighed a 24 oz bottle and it holds 1.5 lbs of water. I agree that is a lot of loss in 2.5 hours, I usually drink about 24 oz per hour. He said he used 22oz in 2.5 hours. But I read recently that we can "load" about 7 ounces of Glyocogen, and about 3-4 lbs of water load up with it. ? Just re-read on it, every ounce of Glycogen stores 3 oz of water.

Quote:

Expect some weight gain (~2-4 pounds). For every ounce of glycogen the body also stores 3 ounces of water. Although your muscles may feel a little heavier at the beginning of the race these feelings will subside as the body uses up the glycogen and water throughout the race.

Carbohydrate Loading: 3 Methods For Marathon Success

Bill

Last edited by Willbird; 06-01-15 at 09:56 AM.