drtbear1967
Musclechemistry Board Certified Member
The lats appear to be a pretty even fiber type split, with around 50% fast and 50% slow twitch fibers. This means a wide range of repetitions and rest periods should be used and you should also (occasionally) utilize aids like lifting straps to ensure that your grip is not failing before your lats – whether it be due to super heavy weights or high reps and fatigue.
-
Source: Srinivasan, R. C., Lungren, M. P., Langenderfer, J. E., & Hughes, R. E. (2007). Fiber type composition and maximum shortening velocity of muscles crossing the human shoulder. Clinical Anatomy: The Official Journal of the American Association of Clinical Anatomists and the British Association of Clinical Anatomists, 20(2), 144-149.
-
Source: Srinivasan, R. C., Lungren, M. P., Langenderfer, J. E., & Hughes, R. E. (2007). Fiber type composition and maximum shortening velocity of muscles crossing the human shoulder. Clinical Anatomy: The Official Journal of the American Association of Clinical Anatomists and the British Association of Clinical Anatomists, 20(2), 144-149.
