The Claim
In young men, fat-free mass decreases by approximately 600 grams within 24 hours following exhaustive cycling exercise when muscle glycogen is not replenished, primarily due to the loss of glycogen and its associated bound water, whereas fat-free mass remains stable when glycogen stores are restored through the intake of digestible carbohydrates.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If young guys do really intense cycling and don't eat carbs afterward, they lose about half a kilo of lean weight in a day—mostly from lost muscle fuel and water. But if they eat carbs, their lean weight stays the same.
See the scientific wording
Fat-free mass decreases by approximately 600 grams in young men 24 hours after exhaustive cycling exercise when muscle glycogen is not replenished, primarily due to loss of glycogen and associated bound water, while fat-free mass remains stable when glycogen is restored through digestible carbohydrate intake.
What the research says
1 studyThe study shows that when young men don’t refill their muscle energy after hard cycling, they lose fat-free mass, but not if they eat carbs to recover. This matches the claim.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.