type i muscle fibers การใช้

• The first observation reflects changes in fiber type ratio; with aging the proportion of type I muscle fibers which are adapted to long effort becomes greater.
• Type I muscle fiber characteristics ( area, number of capillary contacts, fiber area / capillary contacts ) of the vastus lateralis are unaffected by age.
• The largest difference in muscle fiber size between AAS users and non-users was observed in type I muscle fibers of the vastus lateralis and the trapezius muscle as a result of long-term AAS self-administration.