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Discussion Starter #1 (Edited)
Tale of the Tape
nuun:
Sodium (carbonates) 360.0 mg
Potassium (bicarbonate) 100.0 mg
Magnesium (sulfate) 25.0 mg
Calcium (carbonate) 12.5 mg
Vitamin C 19.0 mg
Vitamin B2 Level 500 mcg

Endurolytes:
Sodium (as Sodium Chloride) 40mg
Chloride (as Sodium Chloride) 60mg
Calcium (as Chelate) 50mg
Magnesium (as Chelate) 25mg
Potassium (as Chelate) 25mg
Vitamin B-6 (as Pyridoxine HCL) 6.6mg
Manganese (as Chelate) 1.6mg


I spoke with Dr Clyde Wilson, PhD today (http://www.drclydewilson.com), sports nutrition guru to get his take on nuun vs Endurolytes, and here's what he said.

Given that we sweat out 600ml of sodium/L of sweat/Hour, with nuun having more sodium than Endurolytes, nuun would be better for cyclists because you need to drink more water to have them be effective. This making more sense simply because you can consume a lot more fluid on a bike ride/race than you would want to running.

However, for runners, since you would need less fluids to get the benefits of Endurolytes, they make more sense in that application because of their capsule form, ease of portability as well as being easily digestible.

Wilson also said on a bike, you'd need 3-5 tabs of nuun to replace your hourly losses as to where you'd need 5-10 capsules of Endurolytes to achieve the same results. He said the variable being the fact that some people sweat more than others as the reason for the + of the amount of each one.

One of the keys he mentioned is knowing how much you sweat/Hour as the caveat for how you'd approach fluid replenishment. The only way to know for sure is to weigh yourself pre/post ride a few times to get an avg of the amount that you sweat so you can ballpark the amount you'd need to put back in per hour of activity.

"The concentration needs to be right so you get a 1:1 relationship between the amount of sweat/sodium lost/hour and the rate at which you replace it."

He said this could include something as simple as a teaspoon of salt in each bottle you consume with water if you weren't using either product to essentially get the same effect.

My mother in law is a bio-chem professor, and she told me that something as simple as a longer exhale than the time you inhale can also help with cramping because it helps keep your pH levels in balance better due to you releasing more CO2.
 

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Tale of the Tape

My mother in law is a bio-chem professor, and she told me that something as simple as a longer exhale than the time you inhale can also help with cramping because it helps keep your pH levels in balance better due to you releasing more CO2.

Incredibly true. If you've ever seen someone have a serious anxiety/panic attack, you'll notice carpo-pedal spasms due to an incredibly short if not absent exhalation. I never made the connection between that and cycling cramps when I am out of breath.

Thanks for the eye opener.:thumbsup:
 

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Two skinny J's
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The drink I have settled on GU ROCTANCE ultra endurance grape has 320 mg of sodium and 105 mg potassium and unfortunately no caffeine in the grape. For me I have found this to work better than any I have tried to date including Nunn and HAMMER for LONGER rides over 2.5 hours. Taste and consistency were also by far the best.

I also use Endurolytes in combination with this with the high heat and humidity here on hard fast rides. There was a girl we chatted with yesterday who rode in the Ride2Recovery, who also worked for them - Ride2Recovery, that commented about the humidity here and the fact it was difficult to adjust to it. She was from California and had ridden in Texas and Louisiana so I was surprised to hear that. It was a beautiful day yesterday 85 ish and prolly only 60-70% humidity comapred to 80% this morning :D
 

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Looks like during the summer, our humidity rarely gets above the 40% range in the morning, and drops to the 20% range in the middle of the day. Combine that with our altitude, and it's no wonder I have trouble breathing here.
 

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Two skinny J's
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You would NOT have that problem here Hack :D
 

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Hack, you need to move over to the Southeast. You'll have all the humidity you want during the summer.
 

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No, SoCal had the perfect temperature, humidity, and elevation. Australia was a bit more humid than I would have liked, but living by the beach suited me. A few more years, and I will acclimate to this terrible climate.
 

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Never heard of Nuun, but I've been using Endurolytes for several years now. Endurolytes come in both powder and capsule form. Through trial and error I have dialed in what I need depending on the temperature. On a hot day I mix in 3 scoups of powder/liter in my Camelbak.

Having done both capsules & powdered electrolyte supplements, I feel that the powder is the best way to go for mountain biking. Once you figure out what your body needs for a given situation, the guess work is eliminated if the electrolytes are mixed into your water.
 

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Good stuff Integrate. One thing though, the different amounts of compounds that you listed is primarily a matter of serving size. In the case of Endurolytes the number listed above is found in a single capsule whereas the Nuun numbers is in the form of a much larger tablet.
 

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Discussion Starter #12 (Edited)
And that was Dr Wilson's point. Based on the application (running or riding) and fluid uptake requirements (nuun being larger requiring more and vice versa), one is better suited to the specific activity than the other from the ingestion/absorption perspective. Again, I think it comes down to finding a formula that works for individually and staying with it. If that's nuun, Salt Sticks, a pinch of salt in the bottles or Endurolytes, great. Use what's proven to be effective for you.

I'm doing a MTB omnium this weekend and it should be in the low 90's. Where I live, it's been mid 70's so I've had zero chance to acclimatize so I'm taking nuun and Endurolytes so I can have both barrels loaded. I've done this before in this situation and it's worked.

On a side note, Dr Sims said that 7:00mins in a sauna after a ride (I don't remember the duration/intensity necessary) can acclimate someone to competing in hot temps without having to be actually train in them. Very interesting stuff.
 

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No you've got it. You are correct. Just wanted to point out that the ingredient list of Nuun & Endurolyte have differences, but the biggest difference is their serving size for their particular packaging (pill vs capsule vs powder) of their products.

Happily both of these electrolyte manufacturers have good mixing instruction (water mixed or consumed with compound ratios) to help calculate proper usage.
 
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