Fats. These build on themselves, and contain more energy. Brainliest please and I could explain more.
The rate of speed determined by distance and performance of an athlete is known as speed endurance. Speed endurance training is conducted to ensure the maintainence of an optimal speed during a prolonged desired time of the run. It is beneficial for both sprinters, and long distance runners.
SORRY I DON'T KNOW
MAYBE I CAN HELP YOU OTHER WAY OUT
I don't understand the question fully hold on