Research

Mixed

Short-term exercise training (both sprint interval and moderate-intensity continuous) reduces systemic and intestinal endotoxemia (measured by LBP) and modulates gut microbiota (increasing Bacteroidetes, decreasing Firmicutes/Bacteroidetes ratio) in insulin-resistant subjects.

If you are insulin-resistant or pre-diabetic, engaging in just two weeks of exercise—whether through short, intense sprints or moderate continuous cycling—can significantly improve your gut health by reducing inflammatory markers and shifting your gut bacteria towards a healthier profile. You do not need to exercise for hours; consistency and intensity matter.

GoodSupportsHIGH confidence
Both training modes reduced systematic and intestinal inflammatory markers (tumor necrosis factor-α, lipopolysaccharide binding protein)... Training modified microbiota profile by increasing Bacteroidetes phylum... and decreasing Firmicutes/Bacteroidetes ratio... Exercise training improves gut microbiota profiles and reduces endotoxemia.
Kumail K. Motiani et al. · Medicine & Science in Sports & Exercise · 2019

Why this rating

Randomized controlled trial with a small sample size (n=18 for microbiota analysis) but rigorous metabolic measurements (PET scans).

Source

Exercise Training Modulates Gut Microbiota Profile and Improves Endotoxemia

Kumail K. Motiani et al. · Medicine & Science in Sports & Exercise · 2019

DOI 10.1249/mss.0000000000002112

rct · n=26Cited 324×
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DOI resolved against Crossref · corpus check 2026-06-10

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