Carbohydrate Mouth Rinsing Procedure During Repeated-sprints Exercise inFasted State: Effects on Physical and Cognitive Performance.

Karim Chamari, Anissa Cherif, Romain Meeusen, Joong Ryu, L Taylor, Karim Kammoun, M Fenneni, A Farooq, Abdul Rashid Aziz, Romain Meeusen

Research output: Contribution to journalMeeting abstract (Journal)

Abstract

This study examined the effect of mouth rinsing during endurance cycling in a hot humid environment (32 °C and 75% relative humidity) on athletes in the Ramadan fasted state. Nine trained adolescent male cyclists completed 3 trials that consisted of a carbohydrate mouth-rinse (CMR), a placebo mouth-rinse (PMR), and a no-rinse (NOR) trial during the last 2 weeks of Ramadan. Each trial consisted of a preloading cycle at 65% peak rate of oxygen consumption for 30 min followed by a 10-km time trial (TT10 km) under hot humid condition. During the CMR and PMR trials, each cyclist rinsed his mouth with 25 mL of the solution for 5 s before expectorating the solution pre-exercise, after 5, 15, and 25 min of the preloading cycle, and 15 s prior to the start of TT10 km. Time to complete the TT10 km was significantly faster in the CMR and PMR trials compared with the NOR trial (12.9 ± 1.7 and 12.6 ± 1.7 vs. 16.8 ± 1.6 min, respectively; p < 0.017). Ratings of perceived exertion taken at the end of the TT10 km was lower in both CMR and PMR trials compared with the NOR trial, although the difference was significant only between CMR and NOR (p < 0.05). In conclusion, mouth rinsing with either carbohydrate or placebo solution provided ergogenic benefits compared with a no-rinse condition on TT10 km performance in acute Ramadan fasted subjects during endurance cycling in a heat stress environment.
Original languageEnglish
Pages (from-to)961
Number of pages1
JournalMedicine and Science in Sports and Exercise
Volume49
Issue number5
Publication statusPublished - 2017
EventACSM 64th annual congres - Denver, Denver, United States
Duration: 31 May 20174 Jun 2017

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