Sentences with phrase «contractile characteristics»

Since the middle and lower regions display faster contractile characteristics, they may be comprised of a greater proportion of type II muscle fibers.

Since the upper region appears to display slower contractile characteristics, it may have a greater proportion of type I muscle fibers.

Because the phenotypes were distinct in these knockout mouse models with respect to spontaneous cage activity and fast muscle isometric contractile characteristics, we can conclude that the roles of IL - 15Rα and IL - 15 in vivo are distinct with regard to muscle function.

The observation of reduced calsequestrin in the muscles of IL - 15Rα — KO mice is interesting inasmuch as calsequestrin concentrations are reported to be higher in fast muscles (52) and fast muscles from calsequestrin - 1 — null mice display contractile characteristics similar to those of slow muscles, including longer contraction times and half - relaxation times (ν RTs)(53).

These morphological data highlight a unique feature of fast muscles that are IL - 15Rα deficient, which likely contributes to the slower contractile characteristics we observed in these normally fast muscles.