Postural and Phasic muscles
Here you can find very important information about pain and injuries, curvatures and imbalances, also spasms, trapped muscles and how it happens. This is the reason why you don’t have progress.
Today we will talk about muscles but not what is usually written and talked about. Let’s bring up the topic which I’ve read nowhere except books on anatomy, though it’s very strange. This information is very important not only for getting high results but the understanding of it will help you to save your health. You will understand WHY soon.
We will talk about two types of muscles. From a perspective of people who work out it will be reasonable to divide muscles into PHASIC and POSTURAL.
To make a long story short, Phasic muscles are used for A MOVEMENT and Postural are used for SUSTANING your posture.
Muscles that are used for sustaining your posture have more stamina. In terms of evolution they are older, have more capacity for sustained work and blood is better delivered to them, less fatigable but the main disadvantage is that they tend to shorten.
Whereas Phasic muscles are more easily fatigable, blood is delivered less to them and they don’t tend to shorten but these muscles are prone to atrophy more quickly without constant training.
Only now it does make sense to talk about different types of muscle fibers:
- Fast-twitch fibers (type IIb)
- Slow-twitch fibers (type I)