Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Randomized Controlled Trial
. 2024 Apr 22;16(8):1248.
doi: 10.3390/nu16081248.

Carbohydrate Mouth Rinses before Exercise Improve Performance of Romanian Deadlift Exercise: A Randomized Crossover Study

Tsung-Jen Yang  1 , Yi-Jie Shiu  2 , Che-Hsiu Chen  3 , Sheng-Yan Yu  4 , Ya-Ying Hsu  5 , Chih-Hui Chiu  4
Affiliations
Randomized Controlled Trial

Carbohydrate Mouth Rinses before Exercise Improve Performance of Romanian Deadlift Exercise: A Randomized Crossover Study

Tsung-Jen Yang et al. Nutrients. .

Abstract

(1) Background: This study compared the effects of mouth rinsing with a carbohydrate trial (CMR) and a placebo trial (PL) on concentric and eccentric contraction strength in multi-joint resistance exercise performance. (2) Methods: Twenty healthy adult men (age: 22.4 ± 3.7 years, body mass index: 26 ± 3.8, peak power: 378.3 ± 138.7 W) were recruited in this study. Participants were employed in a double-blind, randomized crossover design to divide participants into carbohydrate mouth rinsing trial (CMR) and placebo trial (PL). After warming up, participants used 6.6% maltodextrin (CMR) or mineral water (PL) to rinse their mouth for 20 s. Next, the participants underwent tests of maximum inertial Romanian deadlift resistance exercise comprising five sets of six reps, with 3 min rests between sets. After deducting the first repetition of each set, the mean values from the five sets were analyzed. (3) Results: The concentric peak power of the CMR trial was significantly higher than that of the PL trial (p = 0.001, Cohen's d = 0.46), the eccentric peak power of the CMR trial was significantly higher than that of the PL trial (p = 0.008, Cohen's d = 0.56), and the total work of the CMR trial was significantly higher than that of PL trial (p = 0.002, Cohen's d = 0.51). (4) Conclusions: These findings demonstrate that mouth rinsing with carbohydrates before exercise can improve concentric and eccentric contraction strength in multi-joint resistance exercise performance.

Keywords: eccentric exercise; ergogenic aids; peak power; strength training.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
CONSORT diagram and study design.
Figure 2
Figure 2
Peak concentric and eccentric power. The peak concentric power (A) and peak eccentric power (B) of the CMR and PL trials were compared. * CMR was significantly higher than those for the PL.
Figure 3
Figure 3
The average power (A), average force (B), and total work (C) of the CMR and PL trials were compared. * CMR was significantly higher than those for the PL.
Figure 4
Figure 4
Comparison of heart rate (A) and rating of perceived exertion (B) between the CMR and PL trials.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Jeukendrup A. A step towards personalized sports nutrition: Carbohydrate intake during exercise. Sports Med. 2014;44:25–33. doi: 10.1007/s40279-014-0148-z. - DOI - PMC - PubMed
    1. Harper L.D., Stevenson E.J., Rollo I., Russell M. The influence of a 12% carbohydrate-electrolyte beverage on self-paced soccer-specific exercise performance. J. Sci. Med. Sport. 2017;20:1123–1129. doi: 10.1016/j.jsams.2017.04.015. - DOI - PubMed
    1. Jeukendrup A., Mensink M., Saris W., Wagenmakers A. Exogenous glucose oxidation during exercise in endurance-trained and untrained subjects. J. Appl. Physiol. 1997;82:835–840. doi: 10.1152/jappl.1997.82.3.835. - DOI - PubMed
    1. Jeukendrup A.E., Brouns F., Wagenmakers A., Saris W. Carbohydrate-electrolyte feedings improve 1 h time trial cycling performance. Int. J. Sports Med. 1997;18:125–129. doi: 10.1055/s-2007-972607. - DOI - PubMed
    1. Gam S., Guelfi K.J., Fournier P.A. Opposition of carbohydrate in a mouth-rinse solution to the detrimental effect of mouth rinsing during cycling time trials. Int. J. Sport Nutr. Exerc. Metab. 2013;23:48–56. doi: 10.1123/ijsnem.23.1.48. - DOI - PubMed

Publication types