Comparison of chocolate milk and plain-milk isotonic drink as a post-exercise recovery drink

• Main Author: Tan, Elizabeth Pei Shyuan.
• Other Authors: Yang Yifan
• Format: Final Year Project
• Language: English
• Published: 2013
• Subjects: DRNTU::Science
• Online Access: http://hdl.handle.net/10356/52152
• Institution: Nanyang Technological University

Background: Studies have shown that consuming a carbohydrate-protein beverage after a bout of aerobic exercise can increase the rate of muscle glycogen storage. There have been recent researches looking at chocolate milk and plain milk as a potential post-exercise recovery drink, as it contains both carbohydrate and protein. Purpose: To see if there will be any difference in performance timing between 2 different conditions: chocolate milk (CM) and plain milk with an isotonic drink (IM), when the caloric content is similar. Hypothesis: There would be no difference in timings between CM and IM for the post-exercise 5km time-trial. Methods: 8 male participants performed a total of 3 sessions. Session 1 was the VO2max determination trial, and sessions 2 and 3 were the experimental trials with randomised nutritional conditions (CM or IM). A 5 km performance time-trial was taken at the end of the 4 hours recovery period to determine the effects of CM and IM. Results: The average total calories burnt during the 75% VO2max run were similar for both CM and IM (CM: 594.88 kcal ± 113.78; IM: 595 kcal ± 113.55). The average 5 km performance time-trial were also similar for both CM and IM (CM: 26.95mins ± 3.81; IM: 27mins ± 3.54) Conclusions: There were no significant differences in average performance times between CM and IM for the 5km time-trial. This could be due to the fact that the amount of calories burnt was similar during the 75% VO2max run.