B-71 Free Communication/Poster - Ergogenic Aids II Wednesday, May 31, 2017, 1: 00 PM - 6: 00 PM Room: Hall F
Combined Carbohydrate and& Caffeine Mouth Rinsing Enhance Anaerobic Power Output in a Reduced Glycogen State
1072 Board #251 May 31 3
30 PM - 5
PURPOSE: The aim of this study was to determine the effects of mouth rinsing with carbohydrate and/or caffeine solutions on peak anaerobic power output during sprint cycling under glycogen reduced conditions.
METHODS: In a counterbalanced, double-blind cross over design, eight trained males (age 21.7 ± 0.7 years, weight 70.8 ± 4.2 kg, height 175.6 ± 7.0 cm, percentage body fat 12.1 ± 3.4 % ) participated in four experimental mouth rinsing trials after signing an IRB-Approved informed consent where they were informed about the risks and benefits associated with the experiment: (1) Mixed carbohydrate and caffeine solution composed of 7.5% sucrose and 2% caffeine (MR-CCAF), (2) Carbohydrate solution (7.5% sucrose) (MR-CHO), (3) Caffeine solution (2% caffeine) (MR-CAF), (4) No rinse (NR). Each trial was performed in the morning, following an overnight fasting, and performed Wingate test (30 seconds, resistance set at 7.5% of body weight). Circulating glucose and lactate levels were measured at the end of each test.
RESULTS: Blood lactate and glucose were not significantly different between trials. Peak Power was significantly higher in MR- CCAF in comparison with NR (11.12 ± 0.57 Wt/Kg versus 9.12 ± 1.01Wt/Kg, p=0.043). MR-CAF and MR-CHO were not significantly different from each other or MR-CCAF. MR-CAF tended to be higher than NR (p=0.053), but lower than MR-CCAF (p=0.182) and MR-CHO (p=0.398).
CONCLUSION: Combining carbohydrate and caffeine in a mouth rinsing solution improves power output under reduced endogenous carbohydrate conditions.© 2017 American College of Sports Medicine