Textbook Question
In 2023, Tigist Assefa of Ethiopia set a new record with a time of 2 hours, 11 minutes, and 53 seconds. Scientists, trainers, and athletes alike have wondered about the extent to which muscle structure and function contribute to success in athletes such as Assefa. What makes elite distance runners so good? Are their muscles somehow different from those of less successful athletes and non-athletes? Imagine that Tigist Assefa is racing against a bird and a fish, each with the same mass as Assefa. Which organism would have the highest cost of locomotion during the race?
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