Lynnsey R. Bowling1, Eric M. Scudamore1, James B. Church1, Veronika Pribyslavska1

1Arkansas State University, Jonesboro, Arkansas

Some research suggests that carbohydrate mouth rinse (CMR) has an ergogenic effect on aerobic, anaerobic, and skill-related performance. However, no study has evaluated the effects of a CMR on soccer-specific skills. PURPOSE: To determine if a CMR implemented following an early-morning soccer practice influenced soccer-specific skills in fasted collegiate female soccer players. METHODS: Thirteen NCAA Division I female soccer players completed control (CON) and 2 double-blind counterbalanced experimental sessions. All sessions were identical, except that during the experimental trials, participants rinsed their mouth for 10-15 s with color-and-taste-matched CMR or placebo (PLA) solutions prior to performing the skill tests. Each session began with a 5-min standard team warm-up followed by a 1-min rest period, during which participants rated perceived exertion (RPE) and thirst sensation (TS). Next, participants completed a 30-min high-intensity practice and reported RPE and TS afterwards. Participants then performed the soccer-specific tests to assess passing, agility, juggling, and shooting skills. At the end of the session, RPE and TS were assessed and session average and maximal heart rate (HR) were recorded. RESULTS: Agility times were significantly faster (p = .01) during CON session (10.9 ± 0.4 s) compared to the PLA treatment session (11.2 ± 0.4 s). There was no significant difference in scores for juggling (p = .99), shooting to the left (p = .81) or right (p = .45) side of the goal, left-foot passing(p = .46), or right-foot passing (p = .70) across all sessions. Post-practice RPE was lower (p = .01) for CMR session than CON session. TS was lower during PLA and CMR sessions compared to CON sessions following the warm-up (PLA p = .004; CMR p = .003) and practice (PLA p = .002; CMR p = .001). There was no significant difference in TS following assessment of soccer-specific skills (p = .80) across sessions. Average (p = .094) and maximal HR (p = .334) were not significantly different across sessions. CONCLUSION: While CMR does not appear to hinder soccer skill-related performance, the current study determined the use of CMR not beneficial to enhance soccer skill-related performance in fasted collegiate female soccer players. Further research is needed to better understand the effects of CMR on soccer-specific skills.

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