A 14-year-old swimmer notices that her muscles feel warm after a long swim. Which type of muscle fiber is responsible for her increased muscle temperature?
Q1. A 14-year-old swimmer notices that her muscles feel warm after a long swim. Which type of muscle fiber is responsible for her increased muscle temperature?
Answer: Type I muscle fibers
Explanation: Type I muscle fibers are responsible for increased muscle temperature, as they have a high mitochondrial density and can utilize fatty acids for energy.