11min chapter

The Peter Attia Drive cover image

#239 ‒ The science of strength, muscle, and training for longevity | Andy Galpin, Ph.D. (PART I)

The Peter Attia Drive

CHAPTER

Muscle Fiber Structure and Function

This chapter explores the anatomy and physiology of muscle fibers, including the difference between fast and slow twitch fibers and how they contribute to force production and contraction speed. It delves into the micro anatomy of muscles, explaining the interaction between myosin and actin, the role of ATP and calcium in muscle contraction, and the influence of muscle fiber type on twitch velocity.

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