The Claim
In young, healthy men aged 18–25, daily supplementation with 20 grams of creatine monohydrate during one week of upper-limb immobilization reduces the decline in elbow flexor strength by 17.4 percentage points compared to placebo, preserving muscle function during disuse.
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.
In young healthy men aged 18–25, taking 20 grams of creatine monohydrate daily for one week while the arm is immobilized results in a 17.4 percentage point smaller loss of elbow flexor strength compared to taking a placebo.
See the scientific wording
In young, healthy men aged 18–25, daily supplementation with 20 grams of creatine monohydrate during one week of upper-limb immobilization likely reduces the decline in elbow flexor strength by 17.4 percentage points compared to placebo, preserving muscle function during disuse.
Creatine fills muscle cells with a high-energy fuel reserve that keeps muscles strong even when they're not being used. This fuel helps make ATP, the energy currency of cells, so muscles can keep contracting. At the same time, creatine triggers signals that turn on genes to build more muscle proteins and add new nuclei to muscle fibers, which prevents muscle loss.
What the research says
1 studyWhen young men had their arm stuck in a cast for a week, those who took creatine lost much less arm strength than those who took a sugar pill — exactly as the claim says.
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.