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Flattened cola improves high-intensity interval performance in competitive cyclists.

Jonathon R Fowles1, Myles W O'Brien2,3, Kathryn G Comeau2,4,5

  • 1School of Kinesiology, Acadia University, 550 Main Street, Wolfville, NS, B4P 2R6, Canada. Jonathon.fowles@acadiau.ca.

European Journal of Applied Physiology
|June 30, 2021
PubMed
Summary

Competitive cyclists experienced reduced perceived exertion and enhanced power output during high-intensity intervals when consuming caffeinated cola beverages. This suggests cola can be a beneficial ergogenic aid for cyclists during intense exercise.

Keywords:
CaffeineCarbohydratesCycling competitionExercise performanceFlattened soda

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Nutritional Science

Background:

  • Limited research exists on the ergogenic effects of cola beverages in cycling.
  • The specific contributions of caffeine and carbohydrates in cola to performance are unclear.

Purpose of the Study:

  • To assess the ergogenic effects of different cola beverages on cycling performance.
  • To determine if caffeine and/or carbohydrates in cola enhance high-intensity exercise.

Main Methods:

  • 13 competitive cyclists participated in a randomized, double-blind, cross-over study.
  • Participants completed a constant power bout followed by high-intensity intervals after consuming decaffeinated diet cola, caffeinated diet cola, or cola with caffeine and carbohydrates.
  • Beverages were consumed intermittently throughout the exercise protocol.

Main Results:

  • Caffeinated cola (with or without carbohydrates) lowered perceived exertion during the constant power bout.
  • Mean power, minimum power, and total work during high-intensity intervals were significantly increased with caffeinated cola compared to placebo.
  • Peak power during high-intensity intervals was not significantly affected by cola consumption.

Conclusions:

  • Cola containing caffeine, with or without carbohydrates, positively influences perceived effort and enhances power output during high-intensity cycling intervals.
  • Commercially available cola can be recommended as an ergogenic aid for competitive cyclists during high-intensity exercise.