The Study
Effect of oral creatine supplementation on human muscle GLUT4 protein content after immobilization.
This study is like a fair test where people were randomly given either creatine or a fake pill to see how their muscles changed after being inactive and then exercising again. Because it was fair and controlled, we can say creatine probably helped keep a key sugar-handling protein in muscles from dropping.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
When a leg is kept still, muscles can get weaker. This study looked at whether taking creatine helps keep muscles healthy during rest and recovery.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 553 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This means creatine may help muscles stay ready to use sugar during rest and recover faster when training restarts.
- 2Creatine stopped muscle sugar transporter (GLUT4) from dropping by 20% during 2 weeks of not moving.
- 3After 10 weeks of exercise, creatine helped GLUT4 go up by about 40%.
- 4Glycogen and creatine in muscles were higher with supplements after 3 weeks, but not after 10 weeks.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Diabetes
Year
2001
Authors
B. Eijnde, B. Ursø, E. A. Richter, P. Greenhaff, Peter Hespel
Related Content
Claims (4)
Taking creatine might help your muscles keep using sugar properly when you're not moving much, and help them rebuild faster when you start moving again.
Taking creatine every day while your leg is immobilized might help keep your muscles' ability to handle sugar working better, so they don’t weaken as much.
If you're a healthy young adult getting back into strength training after resting your leg for two weeks, taking creatine might give you more energy in your muscles and boost creatine levels after three weeks — but by ten weeks, that advantage goes away.
Taking creatine while rebuilding leg strength after being inactive might help your muscles improve faster by boosting a key protein that helps with energy use.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.