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Effect of various carbohydrate-electrolyte fluids on cycling performance and maximal  

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jboldman
(@jboldman)
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12/06/2020 10:29 am  

Int J Sport Nutr Exerc Metab. 2010 Apr;20(2):104-14.

Effect of various carbohydrate-electrolyte fluids on cycling performance and maximal voluntary contraction.
Ganio MS, Klau JF, Lee EC, Yeargin SW, McDermott BP, Buyckx M, Maresh CM, Armstrong LE.

Human Performance Laboratory, University of Connecticut, Storrs, CT.

Abstract
The purpose of this study was to compare the effects of a carbohydrate-electrolyte plus caffeine, carnitine, taurine, and B vitamins solution (CE+) and a carbohydrate-electrolyte-only solution (CE) vs. a placebo solution (PLA) on cycling performance and maximal voluntary contraction (MVC). In a randomized, double-blind, crossover, repeated-measures design, 14 male cyclists (M +/- SD age 27 +/- 6 yr, VO2max 60.4 +/- 6.8 ml x kg-1 x min-1) cycled for 120 min submaximally (alternating 61% +/- 5% and 75% +/- 5% VO2max) and then completed a 15-min performance trial (PT). Participants ingested CE+, CE, or PLA before (6 ml/kg) and every 15 min during exercise (3 ml/kg). MVC was measured as a single-leg isometric extension (70 degree knee flexion) before (pre) and after (post) exercise. Rating of perceived exertion (RPE) was measured throughout. Total work accumulated (KJ) during PT was greater (p < .05) in CE+ (233 +/- 34) than PLA (205 +/- 52) but not in CE (225 +/- 39) vs. PLA. MVC (N) declined (p < .001) from pre to post in PLA (988 +/- 213 to 851 +/- 191) and CE (970 +/- 172 to 870 +/- 163) but not in CE+ (953 +/- 171 to 904 +/- 208). At Minutes 60, 90, 105, and 120 RPE was lower in CE+ (14 +/- 2, 14 +/- 2, 12 +/- 1, 15 +/- 2) than in PLA (14 +/- 2, 15 +/- 2, 14 +/- 2, 16 +/- 2; p < .001). CE+ resulted in greater total work than PLA. CE+, but not PLA or CE, attenuated pre-to-post MVC declines. Performance increases during CE+ may have been influenced by lower RPE and greater preservation of leg strength during exercise in part as a result of the hypothesized effects of CE+ on the central nervous system and skeletal muscle.


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Magnesium
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12/06/2020 10:56 am  

awesome find JB, looks like i might have to pick up some more supplies for making my own drinks.


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motomatt
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12/06/2020 11:18 am  

I wonder how a caffeine solution would have compared ?

Don't buy upgrades, ride up grades.

The body will only do what the mind allows it to do.


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Seabiscuit Hogg
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12/06/2020 11:46 am  

Caffeine was in it. IMO, that might be a pretty good solution for a lot of things.

Seabiscuit Hogg is a fictious internet character. It is not recommended that you receive medical advice from fictious internet characters.

SBH :)


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motomatt
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12/06/2020 12:09 pm  

I meant a 4th solution of just caffeine and water,vs a carbohydrate-electrolyte plus caffeine, carnitine, taurine, and B vitamins solution (CE+) and a carbohydrate-electrolyte-only solution (CE) vs. a placebo solution (PLA)

Posted by: Seabiscuit Hogg
Caffeine was in it. IMO, that might be a pretty good solution for a lot of things.

Don't buy upgrades, ride up grades.

The body will only do what the mind allows it to do.


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Seabiscuit Hogg
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12/06/2020 12:37 pm  

Sorry, my mind got stuck on the one solution because I take about everything in it. I agree a caffeine solution would have made it more intersting.

Seabiscuit Hogg is a fictious internet character. It is not recommended that you receive medical advice from fictious internet characters.

SBH :)


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