G-17 Free Communication/Poster - Exercise and Muscle Damage: MAY 30, 2009 7:30 AM - 11:00 AM ROOM: Hall 4F
PURPOSE: This study compared chocolate milk (CHOC) vs. a commercial recovery beverage (CRB) as a recovery aid after intense exercise regarding performance and muscle damage in trained cyclists.
METHODS: Ten, competitive cyclists (VO2peak 55.2 + 7.3 ml/kg/min.) completed a high-intensity intermittent exercise protocol, then 15 to 18 h later performed a performance trial @ 85% of VO2peak to exhaustion. Participants consumed 1.0g carbohydrate (CHO)/kg/h of a randomly assigned isocaloric beverage (CHOC, or CRB) following the first high intensity intermittent exercise session. The same protocol was repeated one week later with the other beverage.
RESULTS: A one-way ANOVA revealed no significant difference (p =.91) between trials for cycling time to exhaustion at 85% of VO2peak(CHOC 13 + 10.2 min., CRB 13.5 + 8.9 min.) A significantly higher increase (p <0.05) was observed from CKpre-to-post in the CRB trial compared to the CHOC trial (increase CHOC 27.9 + 134.8 U/L-1, CRB 211.9 + 192.5 U/L-1); with differences not significant (p =.35) for CKpost (CHOC 394.8 + 166.1 U/L-1, CRB 489.1 + 264.4 U/L-1) between the two trials.
CONCLUSIONS: These findings indicate no difference between chocolate milk and this commercial beverage as potential recovery aids for cyclists between intense workouts. Comparatively, CHOC is more economical per serving while providing similar benefits in recovery.