Luke W. Knoche1, Colton E. Belitz1,Brian S. Snyder1. 1Truman State University, Kirksville, Missouri; e-mail: lwk1234@truman.edu

Recent literature has suggested that carbohydrate mouth rinsing may benefit endurance performances but produces less ergogenic effects in power sports such as hockey and sprinting. It has been suggested that the nutritional state and hydration status may affect the ergogenic ability of carbohydrate mouth rinsing on improving performance. A commonality among wrestlers in competition is reduced performance due to the glycogen and fluid depleted state resulting from the rigors of dietary restriction and dehydration required to make weight. PURPOSE: The purpose of this study was to compare the effects of carbohydrate mouth rinsing in wrestlers in a depleted-state performing YO-YO IR testing compared to an indistinguishable placebo condition. METHODS: Twelve male wrestlers (age 18-22) volunteered for this study which took place over four weeks with each collection period approximately 1 week apart. Participants initially completed a familiarization trial of the YO-YO IR test and one week later completed a self-selected, repeated weight cut within 2 lbs. of their weight category and baseline YO-YO IR test. Participants then completed two trials of mouth rinse or placebo using a randomized, double-blinded, counterbalanced design. After weigh-in, wrestlers mouth rinsed with an artificially sweetened 6.4% maltodextrin carbohydrate solution or indistinguishable placebo for 10 seconds (expectorating solution). After a standardized warm up, another mouth rinse was provided and YO-YO IR testing commenced. Final distances were recorded once test subjects were no longer able to complete the pacer run in the given time. RESULTS: There was no significant difference in distance covered between treatments (Placebo 1261.8 ± 424 / CHO 1221.8 ± 285 meters). There appears to be a learning/training effect as baseline distance (1127.3 ± 370) was significantly different from visit 4 (1276.4 ± 326) independent of treatment condition (p < 0.05). CONCLUSION: Carbohydrate mouth rinsing was not ergogenic compared to placebo in wrestlers making weight for a YOYO IR-2 test. However, there was a learning effect between baseline shuttle run verses last trial run. The YOYO IR in the depleted state might require more familiarization to see if distance covered balances out and has no effect.

Funding provided by Truman State University Grant in Aide of Student Research (GIASR).

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