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Chocolate milk as a post-exercise recovery aid.
Jason R Karp1, Jeanne D Johnston, Sandra Tecklenburg
1Dept of Kinesiology and Applied Health Science, Human Performance Laboratory, Indiana University, Bloomington 47405, USA.
Summary
Chocolate milk effectively aids recovery between intense exercise sessions. Endurance athletes experienced greater time to exhaustion and total work after consuming chocolate milk compared to a carbohydrate replacement drink.
Area of Science:
- Sports Science
- Exercise Physiology
- Nutritional Biochemistry
Background:
- Optimal recovery is crucial for athletes performing multiple high-intensity exercise bouts.
- Nutritional strategies, particularly post-exercise rehydration and refueling, significantly impact subsequent exercise performance.
- Chocolate milk is a popular recovery beverage, but its efficacy compared to specialized drinks requires further investigation.
Purpose of the Study:
- To compare the efficacy of chocolate milk, a fluid replacement (FR) drink, and a carbohydrate replacement (CR) drink as recovery aids in endurance-trained cyclists.
- To assess the impact of these recovery beverages on time to exhaustion (TTE), heart rate (HR), rating of perceived exertion (RPE), and total work (WT) during a subsequent endurance trial.
Main Methods:
- Nine male, endurance-trained cyclists completed three trials in a single-blind, randomized design.
- Each trial involved an initial interval workout, 4 hours of recovery with beverage consumption (chocolate milk, FR, or CR), and a subsequent endurance trial to exhaustion at 70% VO2max.
- Beverage carbohydrate content was matched between chocolate milk and CR trials.
Main Results:
- Time to exhaustion (TTE) and total work (WT) were significantly greater in the chocolate milk and FR trials compared to the CR trial.
- No significant differences were observed in average heart rate (HR) or rating of perceived exertion (RPE) between the trials.
- These findings indicate enhanced endurance capacity following recovery with chocolate milk or FR.
Conclusions:
- Chocolate milk serves as an effective recovery beverage for endurance athletes performing repeated exercise bouts.
- The nutritional composition of chocolate milk supports better recovery and subsequent performance compared to a standard carbohydrate replacement drink.
- Athletes can consider chocolate milk as a viable and effective option for post-exercise recovery.