Fast twitch?

From another thread: > I have no interest in short distances since I have no fast-twitch fibers to speak of. It's been decades since I was a physiology student, but I have to wonder if fast twitch fibers would be really all that useful to swimming, even to the short sprints. Maybe for 25s. I would think that larger cross sectional area of the swimming musculature (more available power) and the ability to recruit more muscle fibers simultaneously (using a larger fraction of the power on tap) would be more important for sprinting. Are there published studies which demonstrate that drop dead sprinters have a significantly different distribution of fast twitch and slow twitch muscle fibers than the rest of the swimming population?
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  • I'm guessing my fiber composition is 0% slow twitch and 67% percent FT. The remaining percent is just missing Never been tested, but if I were I'd guess they'd find my composition to be 25% fast-twitch, 25% slow-twitch, and 50% no-twitch.
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  • I'm guessing my fiber composition is 0% slow twitch and 67% percent FT. The remaining percent is just missing Never been tested, but if I were I'd guess they'd find my composition to be 25% fast-twitch, 25% slow-twitch, and 50% no-twitch.
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