Not very running specific, but see how many reps you can do at 80% of one rep max for a leg exercise (squats? leg presses?). Apparently 8 or less suggests fast twitch, 11 or more suggests slow twitch.
Head down to your local Walmart. Find the sporting goods section. Blast some Pantera and measure your vertical jump to the nearest quarter inch. Apply various conversion factors to determine your precise muscle composition.
The slow-twitch/fast-twitch dichotomy is bro science from 50 years ago. You'll be whatever you train to be.
To be a sprinter, you need the technique. That's all. It doesn't hurt to have explosive power, but this notion that a sprinter gets cadence up to 4 or 5 steps/s because their muscles are contracting faster is nonsense.
Distance runners rarely commit themselves to sprint training enough for it to work.
So if Usain Bolt had just trained to be a marathoner he would have run 2:03?
You cannot be a sprinter with the explosive power and that comes from fast twitch muscle fibers.
Humans cannot change muscle fiber type. We can make fast twitch slower with training, but there is almost no evidence that we can make slow twitch faster. We do have some "in between" but they tend be able to become more oxidative than anaerobic.
Whatabout: Bolt could easily run marathons if he trained long enough and lost weight. He is too tall and naturally heavy to run a 2:03. His PR would happen when most of his muscle was gone. Dogma ad repititio: you're ducking the clue I already gave you about biomechanics. Sprinting is a matter of high cadence, which is a matter of technique, not fiber type. You might as well claim Eddie Van Halen had fast-twitch fingers.
Explosive power can help a sprinter with good technique get even better, so all elite sprinters do it. But scientists studying those sprinters vastly overestimated its importance.
Since you mentioned Bolt, you may recall him being put into intensive weight training, after he set his world records. He never broke them again.
Fiber type not changing is a long-debunked trope. You'll surely refuse to fact-check yourself, but others should take heed.
The unregistered insulter proves nothing but his/her own fragility.
Whatabout: Bolt could easily run marathons if he trained long enough and lost weight. He is too tall and naturally heavy to run a 2:03. His PR would happen when most of his muscle was gone. Dogma ad repititio: you're ducking the clue I already gave you about biomechanics. Sprinting is a matter of high cadence, which is a matter of technique, not fiber type. You might as well claim Eddie Van Halen had fast-twitch fingers.
Explosive power can help a sprinter with good technique get even better, so all elite sprinters do it. But scientists studying those sprinters vastly overestimated its importance.
Since you mentioned Bolt, you may recall him being put into intensive weight training, after he set his world records. He never broke them again.
Fiber type not changing is a long-debunked trope. You'll surely refuse to fact-check yourself, but others should take heed.
The unregistered insulter proves nothing but his/her own fragility.
Good lord, quit while you're behind. Dumbest poster on here consistently.