If you can train your muscle endurance with longer and lighter sessions and maximum strenght with high intensity, whats the (physical) difference in our muscles?
In: 6
Fast twitch versus slow twitch muscle fibers.
I can’t explain in detail on the phone, but…
Skeletal muscles are attached to bones. You control them, unlike other muscles such as the heart that you don’t actively control.
All muscles have both fast and slow twitch fibers, but the ratio optimizes what they are for.
Slow twitch are all about aerobic energy generation– they use oxygen to get energy. They are good for cardio. They generate energy over a long period of time.
Fast twitch is about applying more force quickly– it’s more anaerobic, generating energy without oxygen. I think they are denser. These get tired easier but generate force for things like weight lifting.
I think there are subcategories too but I don’t recall.
Cheers
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