Dr. Andy Galpin Muscle Fiber Type Training


Coming to you from the Fitness Business Summit in San Diego we have Dr. Andy Galpin. Dr. Galpin is a researcher at Cal State Fullerton who is leading the conversation on muscle fiber type training as well as a cohost of the Barbell Shrugged Podcast. His lab is biopsying and analyzing muscle fibers one at a time. Today on the Muscle Expert Podcast Dr. Galpin gives us a crash course on influencing your muscle fiber type, how muscle fiber nuclei influence your gains, bias in research and MUCH more!

1Time Stamps:

4:00- How Dr. Galpin’s research is changing the way that we think about fiber types.
8:00- Training your muscle fiber types. How you can change your training regimen to influence your dominant fiber type.
12:10- Testosterone use and how it influences your muscle’s nuclei.
14:30- How Dr. Galpin’s research is changing the way we think about muscle building.
17:10- The difference between how muscle fiber types react to stimulus.
21:30- How Dr. Galpin is challenging the paradigm in fiber type research. 24:00- An example of the bias of research. How group findings can be skewed by outliers.
29:00- Dr. Galpin’s philosophy on influencing the fitness industry and coaching.
31:00- A crash course on AMPK and mTOR. How each of those proteins influences muscle growth and fat loss.



  1. The timing of this podcast could not be more ideal for me. Crazy. This is an area of hypertrophy research where good studies are lacking and it seems like there is pretty significant inter-individual variability. Thank you

  2. You’ve fallen so far Ben. from a big time name, to a certified snake oil salesmen. Just because the majority of the population is ignorant doesn’t mean it’s alright to take advantage of them lol


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