Abstract
Oral carbohydrate rinsing has been demonstrated to provide beneficial effects on
exercise performance of durations of up to one hour, albeit predominately in a
laboratory setting. The aim of the present study was to investigate the effects of
different concentrations of carbohydrate solution mouth-rinse on 5 km running
performance. Fifteen healthy men (n=9; mean±SD age: 42±10 years; height:
177.6±6.1 cm; body mass: 73.9±8.9 kg) and women (n=6; mean±SD age: 43±9 years;
height: 166.5±4.1 cm; body mass: 65.7±6.8 kg) performed a 5 km running time trial
on a track on four separate occasions. Immediately before starting the time trial and
then after each 1 km, subjects rinsed 25 mL of either 0, 3, 6, or 12% maltodextrin for
10 s. Mouth-rinsing with 0, 3, 6 or 12% maltodextrin did not have a significant effect
on the time to complete the time trial (0%: 26:34±4:07 min:sec; 3%: 27:17±4:33
min:sec; 6%: 27:05±3:52 min:sec; 12%: 26:47±4.31 min:sec; P=0.071; 2
P =0.15),
heart rate (P=0.095; 2
P =0.16), rating of perceived exertion (RPE) (P=0.195; 2
P
=0.11), blood glucose (P=0.920; 2
P =0.01) and blood lactate concentration (P=0.831;
2
P =0.02), with only non-significant trivial to small differences between
concentrations. Results of this study suggest that carbohydrate mouth-rinsing provides
no ergogenic advantage over that of an acaloric placebo (0%), and that there is no
dose-response relationship between carbohydrate solution concentration and 5 km
track running performance.
Original language | English |
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Pages (from-to) | 715-720 |
Number of pages | 6 |
Journal | The Journal of Strength & Conditioning Research |
Volume | 31 |
Issue number | 3 |
Early online date | 30 Jun 2016 |
DOIs | |
Publication status | Published - 1 Mar 2017 |
Bibliographical note
This article is currently in press. Full citation details will be uploaded when available.Due to publisher policy, the full text is not available on the repository until the 30th of June 2017
Keywords
- Maltodextrin
- Oral receptors
- Field-based