Uploaded June 2022 | Updated September 2026, 1 day ago
CORRECTION: In the video, I claimed that there was no acute effect of supplementation and that the supplements were not given prior to exercise. This was false. 20 grams of the supplement (soy, whey, or carbohydrate) were given immediately prior to the administration of exercise.
In this episode, I dissect a 2013 study showing that soy protein blunts increases in post-resistance training testosterone in men (PMID 24015701). I discuss the implications of this finding in the context of a meta-analysis that suggests that soy does not affect testosterone in men (PMID 33383165), as well as the debate about the role of post-exercise hormonal changes in exercise adaptation to resistance exercise (PMID 24136137). Finally, I discuss a recent study showing no difference between plant and animal protein in exercise-induced muscle hypertrophy (PMID 33599941), namely its having been conducted in untrained individuals in whom the magnitude of "newbie gains" will tend to overwhelm and negate small effects that might the differences in protein quality (i.e. whey versus soy) may have on muscle hypertrophy. I argue that for intermediate and advanced trainees, an evidence gap continues to exist that requires mechanistic considerations to "fill" until appropriate randomized controlled trial data becomes available to better inform our decisions.
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PODCAST The Kevin Bass Show
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TWITTER twitter.com/kevinnbass
twitter.com/healthmisinfo
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And above all, please donate to support what I do:
PATREON patreon.com/kevinnbass
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CORRECTION: In the video, I claimed that there was no acute effect of supplementation and that the supplements were not given prior to exercise. This was false. 20 grams of the supplement (soy, whey, or carbohydrate) were given immediately prior to the administration of exercise.
In this episode, I dissect a 2013 study showing that soy protein blunts increases in post-resistance training testosterone in men (PMID 24015701). I discuss the implications of this finding in the context of a meta-analysis that suggests that soy does not affect testosterone in men (PMID 33383165), as well as the debate about the role of post-exercise hormonal changes in exercise adaptation to resistance exercise (PMID 24136137). Finally, I discuss a recent study showing no difference between plant and animal protein in exercise-induced muscle hypertrophy (PMID 33599941), namely its having been conducted in untrained individuals in whom the magnitude of "newbie gains" will tend to overwhelm and negate small effects that might the differences in protein quality (i.e. whey versus soy) may have on muscle hypertrophy. I argue that for intermediate and advanced trainees, an evidence gap continues to exist that requires mechanistic considerations to "fill" until appropriate randomized controlled trial data becomes available to better inform our decisions.
===
Like, comment, subscribe.
For more, find me at:
PODCAST The Kevin Bass Show
YOUTUBE youtube.com/user/kbassphiladelphia
WEBSITE thedietwars.com
TWITTER twitter.com/kevinnbass
twitter.com/healthmisinfo
INSTAGRAM instagram.com/kevinnbass
TIKTOK tiktok.com/@kevinnbass
And above all, please donate to support what I do:
PATREON patreon.com/kevinnbass
DONATE thedietwars.com/support-me
