Partial ROM Training for Strength, and Protein Requirements for Muscle Growth
The Stronger By Science Podcast
Getting Rid of the Lines on a Regression Model
Greg, what we're looking at here is a figure that you see on just about every evidence-based article about protein intake. This range of 1.6 to 2.2 grams per kilogram per day comes from a 2018 meta analysis by morton and colleagues. Greg: I don't want it to seem as if I'm being critical of this work I'm rather highlighting this work and saying let's dig in and kind of get some nuance from it here.
Today’s episode begins with a discussion about an ambitious experiment in the world of academic publishing, and the real-world costs of striving for bench press excellence. After that, Greg presents a segment about partial range-of-motion (ROM) training for strength outcomes. Greg digs into the available research about whether or not partial reps can be used to facilitate greater strength gains, and provides practical recommendations about when and how to incorporate this style of training. That’s followed by Eric’s segment that tackles a fairly widespread misconception about protein requirements for muscle growth. Many people believe that 1.6 g/kg/day is a very clear minimum requirement for supporting hypertrophy, and that falling a little bit short of this target severely limits muscle growth. However, the data suggest otherwise. He explores the available research and discusses some protein target recommendations for people who are prioritizing muscle growth or retention.
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TIME STAMPS
Intro/Announcements (0:00)
An innovation in academic publishing (4:53)
- https://www.journals.uchicago.edu/doi/10.1086/700070
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1420798/
- https://scholarlykitchen.sspnet.org/2018/09/26/the-rise-of-peer-review-melinda-baldwin-on-the-history-of-refereeing-at-scientific-journals-and-funding-bodies/
Reviewing Greg’s shitpost (19:39)
Combining ROMs for larger strength gains? (25:12)
The history and tradition of partial-ROM training (29:39)
Study #1 (Bazyler) (38:51)
Study #2 (Gillingham) (40:14)
Study #3 (Pedrosa) (43:14)
Study #4 (Whaley) (45:07)
Summary of findings and mechanisms (46:56)
Conclusions and practical applications (56:20)
How much protein do you actually need for muscle growth? (1:01:38)
What are the most important dietary metrics to track and manipulate for a hypertrophy-oriented diet? (1:01:55)
New meta-analysis by Nunes et al (1:05:18)
The 2018 meta-analysis by Morton and colleagues (1:13:04)
What if we only look at values above 1.2 g/kg/day? (1:19:01)
A note on “leave-one-out” analyses and cherry-picking (1:20:41)
What if we only look at values above 1.24 g/kg/day? (1:27:54)
Summary and conclusions (1:31:07)
Practical applications (1:37:25)
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