You don't. The bicep is not the primary muscle for a powerful break shot. A powerful breakshot relies on bringing the entire body into play, in the proper order from the feet to the wrist. The most powerful break accelerates a lightweight cue (the record is held using a 17 ounce cue) using the entire body and maintaining the cue in the same attitude to the cue ball during the stroke.
The power is from additives of acceleration and not from brute force.
Fast twitch fibers
I think you are thinking of fast twitch muscles. There are two kinds fast twitch and slow twitch.
Slow twitch
Fast-twitch fibers can deliver a quick burst of power.Slow-twitch fibers can maintain a contraction for a longer time! -Apex :]
There are fast twitch muscles fibers in all of your muscles, especially in your legs.
fast-twitch NOT slow-twitch
They are different type of muscle fibres (US spelling Fibers). Fast twitch are good at contracting fast but fatigue quickly. Slow twitch contract more slowly but do not fatigue as fast. In athletes, sprinters tend to have a dominance of slow twitch fibres while insurance competitors have a dominance of slow twitch.
Slow twitch and fast twitch A muscle fibers.
slow twitch and fast twitch
Sprints like 100- 400 meters use the most fast twitch fibers.
They tend to have more fast-twitch or slow-twitch fibers, depending on what kind of athlete they are.
People who possess a high percentage of fast twitch muscles will generally be quicker, faster, and able to jump higher than people with a lower percentage of fast twitch muscles.