Fast twitch muscle fibers

DO YOU HAVE THE RIGHT BODY TO BE FAST?

Dec 11, 2025

Biomechanics, Exercise physiology, Track and field

100 meter dash, ACTN3, Fast twitch muscle fibers, Improve your speed, right leg length to sprint fast, Speed, Speed gene, Speed races, Sprint faster, Sprinting, The right body to be fast

Hugo Noya Enríquez

Do you have the right body to be fast? The hard truth is your parents set your speed potential. We know that’s not some hot take. Everyone points it out all the time. But what are the specific physical traits that are supposed to make you fast? Scientists have measured it all: leg length, muscle fibers, bone structure, and even…
HOW MUCH FAST TWITCH FIBERS DO ELITE SPRINTERS HAVE?

Sep 5, 2025

Exercise physiology, Kinesiology, Track and field

Fast twitch fibers, Fast twitch muscle fibers, How much fast twitch fibers do elite sprinters have, Slow twitch fibers, Slow twitch muscle fibers, Speed, Speed Training, Sprinting

Hugo Noya Enríquez

We can look at muscle fibers as being on a spectrum with slow twitch on one side and fast twitch on the other side. Type 1, which are slow twitch, uses oxygen to create energy. The upside is they can work for a longer period of time before fatiguing. The downside is they contract the…