Mixed
Higher protein intake (1.6 g/kg/day) modulates gut microbiota composition differently than moderate protein intake (1.0 g/kg/day) during resistance training, specifically affecting the abundance of Veillonellaceae, Akkermansia, and Eggerthellaceae.
While higher protein doesn't build more muscle, it does change your gut bacteria. Specifically, it increases beneficial bacteria like Akkermansia and Veillonellaceae. This may offer metabolic benefits independent of muscle growth, though the clinical significance is still being researched.
In the HIGH protein group, the resistance training intervention increased the abundance of Eggerthellaceae (P < 0.001), Veillonellaceae (P < 0.001), and Akkermansia (P = 0.05).
Why this rating
Exploratory analysis with multiple comparisons; while statistically significant, the clinical relevance of specific taxon changes is not fully established in this single trial.
Source
Higher protein intake during resistance training does not potentiate strength, but modulates gut microbiota, in middle-aged adults: a randomized control trial
Colleen F. McKenna et al. · American Journal of Physiology-Endocrinology and Metabolism · 2021
DOI 10.1152/ajpendo.00574.2020
Related findings · Mixed
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