PMID- 24504430 OWN - NLM STAT- MEDLINE DCOM- 20150221 LR - 20140716 IS - 1530-0315 (Electronic) IS - 0195-9131 (Linking) VI - 46 IP - 8 DP - 2014 Aug TI - Mouth rinsing and ingesting a bitter solution improves sprint cycling performance. PG - 1648-57 LID - 10.1249/MSS.0000000000000271 [doi] AB - PURPOSE: There is evidence that carbohydrate (CHO) mouth rinsing can improve endurance exercise performance as well as muscle force production and sprint performance. Whether the oral administration of non-CHO tastants also affects exercise performance is not known. The purpose of this study was to investigate whether mouth rinsing and ingesting a bitter-tasting solution of quinine improves maximal sprint cycling performance. METHODS: Fourteen competitive male cyclists performed a 30-s maximal cycling sprint immediately after rinsing their mouth for 10 s and then ingesting a 2-mM bitter quinine solution, plain water, a 0.05% (w/v) sweet aspartame solution, or no solution at all (control). Cycling power output was recorded during the sprint. Heart rate, perceived exertion, blood lactate, and blood glucose were measured preexercise, immediately postexercise, and 7 min postexercise. RESULTS: Quinine significantly improved mean power output by 2.4%-3.9% compared with the three other conditions [P