Fast and slow twitch fibres - UK-Muscle Body Building Community

Nick B · 21-11-2006, 07:54 PM

Just a quick question, to build fast twitch muscle fibres, would you train low reps heavy weights or high reps low weights?

Cheers, its just to clarify an argument with a mate, and now his confused me lol.

Toregar · 22-11-2006, 06:00 AM

Slow-Twitch fibers are your aerobic (Think prolonged activity) fibers. They're highly resistant to fatigue. Long distance runners and whatnot, have a lot of slow-twitch fibers in their physiques.

Fast-Twitch A fibers are anaerobic (Think more along the lines of explosive activities) fibers. These fibers are more susceptible to fatigue. They are for more prolonged anaerobic activities, such as sprinting.

Fast-Twitch B fibers are anaerobic fibers. These guys are the most susceptible to fatigue. They are used for very short anaerobic activities, like weightlifting. Your big powerlifters use a lot of these fibers.

Snagged this from an older post I made. If you couldn't ascertain which was which from reading it, Fast-Twitch are better trained through lower reps, where slow-twitch are more aerobic, i.e. higher reps.

Nick B · 22-11-2006, 10:14 PM

Thanks for that, I was right all along!! lol

21-11-2006, 07:54 PM	#1 (permalink)
Nick B Why so serious? Join Date: Aug 2006 Location: Essex Posts: 648	Fast and slow twitch fibres Just a quick question, to build fast twitch muscle fibres, would you train low reps heavy weights or high reps low weights? Cheers, its just to clarify an argument with a mate, and now his confused me lol.

22-11-2006, 06:00 AM	#2 (permalink)
Toregar Progressing Join Date: Apr 2006 Location: Ohio Posts: 184	Re: Fast and slow twitch fibres Slow-Twitch fibers are your aerobic (Think prolonged activity) fibers. They're highly resistant to fatigue. Long distance runners and whatnot, have a lot of slow-twitch fibers in their physiques. Fast-Twitch A fibers are anaerobic (Think more along the lines of explosive activities) fibers. These fibers are more susceptible to fatigue. They are for more prolonged anaerobic activities, such as sprinting. Fast-Twitch B fibers are anaerobic fibers. These guys are the most susceptible to fatigue. They are used for very short anaerobic activities, like weightlifting. Your big powerlifters use a lot of these fibers. Snagged this from an older post I made. If you couldn't ascertain which was which from reading it, Fast-Twitch are better trained through lower reps, where slow-twitch are more aerobic, i.e. higher reps. Last edited by Toregar; 22-11-2006 at 06:02 AM.

22-11-2006, 10:14 PM	#3 (permalink)
Nick B Why so serious? Join Date: Aug 2006 Location: Essex Posts: 648	Re: Fast and slow twitch fibres Thanks for that, I was right all along!! lol

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