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Related Experiment Video

Updated: Dec 13, 2025

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Effect of Carbohydrate Mouth Rinse on Resistance Exercise Performance.

Michael S Green1, Cody S Kimmel, Tyler D Martin

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Summary
This summary is machine-generated.

Carbohydrate mouth rinse (CMR) did not enhance resistance exercise performance in this study. While a placebo effect was observed, CMR did not improve repetitions to fatigue, perceived exertion, or physiological markers in trained individuals.

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Area of Science:

  • Exercise Physiology
  • Sports Nutrition
  • Human Performance

Background:

  • Carbohydrate mouth rinse (CMR) is known to improve endurance performance.
  • Its effects on resistance exercise performance are less understood.
  • Investigating CMR's potential benefits for strength training is warranted.

Purpose of the Study:

  • To determine if a 6.4% maltodextrin carbohydrate mouth rinse enhances resistance exercise performance.
  • To assess the impact of CMR on repetitions to fatigue, perceived exertion, and physiological responses.
  • To compare the effects of carbohydrate rinse, placebo rinse, and water rinse.

Main Methods:

  • Eighteen male and female resistance-trained subjects participated in a crossover, counter-balanced study.
  • Subjects performed bench press exercises (4x10 reps at 65% 1RM) and repetitions to failure (at 60% 1RM).
  • Participants rinsed with water, placebo, or 6.4% maltodextrin solution during exercise, with measurements of RPE, FS, REPS, GLU, and LA.

Main Results:

  • A placebo rinse and carbohydrate rinse both increased repetitions to fatigue compared to water.
  • No significant difference was found between the placebo and carbohydrate rinse groups for repetitions to fatigue.
  • No treatment effects were observed for rating of perceived exertion, pleasure-displeasure, blood glucose, or lactate levels.

Conclusions:

  • This study did not find evidence that carbohydrate mouth rinse improves upper-body resistance exercise performance.
  • A placebo effect may influence repetitions to fatigue in resistance exercise.
  • Further research is needed to explore the ergogenic potential of CMR in different resistance exercise protocols.