Answer:
Step-by-step explanation:
it requires power or strength to run and a lot of strength to run fast.
Speed is the combination of stride length and how many strides you can take in a given time or distance.
Mass is necessary for power, but the runner must carry that mass down the track, which means you will reach a point of diminishing returns. You can get too large to benefit your performance, which is why sprinters look muscular but they do not look like linemen on a football team.
Sprinters do not lift to weigh more they lift to be stronger without gaining unnecessary mass or weight.
They are extremely lean, which also makes them look more muscular, since their body fat percentage is very low.
