The Study
Isonitrogenous low-carbohydrate diet elicits specific changes in metabolic gene expression in the skeletal muscle of exercise-trained mice
This study shows what happened to mice on special diets while they exercised. It can tell us what changed in their muscles and bodies, but it can't prove the diet caused those changes or that the same thing would happen in people.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Mice that exercised and ate very few carbs still had full muscle energy and could run just as far as mice eating normal food. Their muscles switched to burning fat instead of sugar.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 514 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This suggests that trained bodies can keep muscles fueled even without many carbs, which might help human athletes or people on low-carb diets stay active.
- 2Mice on 1% or 10% carb diets had the same muscle glycogen and ran the same distance as normal mice.
- 3Only the 1% carb diet made ketones.
- 4Both low-carb diets made muscles use more fat for fuel.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
PLoS ONE
Year
2022
Authors
Hazuki Saito, N. Wada, K. Iida
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.