I was finally able to find an article that clearly explained how to calculate sweat rate….
- Your weight prior to the exercise = A lbs.
- Keep track of the amounts of fluids you consumed during exercise = B oz. consumed.
- Weigh yourself upon completion of the exercise = C lbs.
- Determine weight lost during exercise = A – C lbs. x 16 = D oz. lost:
- Account for fluids consumed to determine your total sweat loss: D oz. of fluids lost + B oz. fluids consumed = E oz. of total sweat loss.
- Divide E (ounces of total sweat loss) by minutes of exercise for sweat rate per minute of exercise = F oz./minute of sweat loss
I just finished calculating the numbers and this is how it turned out.
1. 216 pounds
2. 80 oz
3. 211 pounds
4. 80 oz lost
5. 80 + 80 = 160 oz of total sweat lost
6. 160 oz / 346 = .46 oz/minute = 28 ounces for 1 hour.
These are the numbers from my 4-hour ride and 2-hour run this past weekend. Granted that it was kinda hot but 28 ounces for 1 hour is a lot for me. Now you probably think that all one needs to do is drink 28 ounces every hour and that person will be fine. If it were only that easy. A person phsyically can’ do that because each person has a limit on how much fluids their body can take. I might have to shoot for 20 ounces an hour and see how that goes.