Table for Exercise 11.32 Time to Exhaustion (minutes) 3. Cyclist Chocolate Milk 9. 24.85 50.09 38.30 26.11 36.54 26.14 36.13 47.35 35.08 Carbohydrate Replacement 10.02 29.96 37,40 15.52 9.11 21.58 31.23 22.04 17.02
To determine if chocolate milk was as effective as other carbohydrate replacement
drinks, nine male cyclists performed an intense workout followed by a drink and a
rest period. At the end of the rest period, each cyclist performed an endurance trial in
which he exercised until exhausted and time to exhaustion was measured. Each cyclist
completed the entire regimen on two different days. On one day the drink provided
was chocolate milk and on the other day the drink provided was a carbohydrate
replacement drink.
Data consistent with summary quantities appearing in the paper “The Efficacy of
Chocolate Milk as a Recovery Aid” (Medicine and Science in Sports and Exercise
[2004]: S126) appear in the table below. Is there evidence that the
exhaustion is greater after chocolate milk than after carbohydrate replacement drink?
Use a significance level of 0.05.
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