CARBOHYDRATE MOUTH RINSE IMPROVES MODERATE INTENSITY TREADMILL RUNNING IN COLLEGIATE ATHLETES

The purpose of this study was to examine the influences of carbohydrate (CHO) mouth rinse on self-selected running speeds, heart rate and psychological response during a 30-min treadmill run. Twelve endurance-collegiate male athletes (N=12) age 22.33 ± 0.63, mean height 169 ± 5.89 m, and mean body weight 62.57 ± 7.69 kg performed two trials that have one-week interval of crossover study. Each trial involved a 10-min warm-up at 60% HRmax followed by a 30-min run. The run was performed on an automated treadmill that allowed the spontaneous selection of speeds without manual input. Participants were asked to mouth rinsing with either a 6% CHO or taste-matched placebo (PLA) solution. Parameters measured include self-selected speed during treadmill running, heart rate and psychological responses (feeling arousal scale, feeling scale, gastrointestinal scale). Significant interaction between groups across experimental sessions were noted on three parameters (p<.05). The CHO mouth rinse group showed improvements of heart rate, feeling scale and feeling arousal scale compare to control group during treadmill running. These findings demonstrated that 6% CHO mouth rinse is effective in improving performance of moderate intensity running physiologically and psychologically.