Rep range(s) and type of muscle fibre(s)?

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Daari -> Rep range(s) and type of muscle fibre(s)? (May 7 2008 19:42:09)
Could someone please break down the type of muscle fibres, and what rep range they are 'stimulated' at. There must be some major differences between people, as I know plenty of chaps who can grow impressive biceps when keeping reps between 4-6, say there is someone who sees the most improvements at 4-5 reps (person A), whereas I find higher reps for biceps more beneficial. Does this mean that I have a different proportion of muscle fibres to person A? Just wondering....apologies if it sounds a little stupid

iaink -> RE: Rep range(s) and type of muscle fibre(s)? (May 8 2008 10:20:35)
quote: Could someone please break down the type of muscle fibres, and what rep range they are 'stimulated' at. Lift hard and there's no need to worry about what fibres are doing what.

Daari -> RE: Rep range(s) and type of muscle fibre(s)? (May 8 2008 11:01:36)
It's just curiosity really. Over the years I have found what work best for me personally

iaink -> RE: Rep range(s) and type of muscle fibre(s)? (May 8 2008 11:13:21)
Your motor units are recruited by the 'size principale'. The largest units (fast twitch) are recruited last and need the largest firing frequencies to be inervated. This is one reason for are degree of motor control. The smallest units responsible for 'fine' movement are recuited 1st. Generally speaking this results in slow twitch moror units being recruited 1st, then fast twitch oxidative, then fast twitch non-oxidative species (IIx). In this way we don't automatically 'punch ourselves out' whilst trying to itch our face [:D]

stephen77 -> RE: Rep range(s) and type of muscle fibre(s)? (May 9 2008 13:12:35)
there is more to getting big than just rep range. Speed of movement, number of sets, intensity make a difference. plus genetics. so you may do 2 sets of 8-10 reps. they may do 5 sets of 4-5 reps. So the extra volume may have helped them grow more than the actual rep range etc. but you will have different ratio of muscle fibre to other people. as for the amount of variation. there is probably some biospay of 100 metre runner, weight lifter, body builders versus that of marathon runner, long distance swimmers etc.

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