Does creatine help muscles grow right after exercise?
No effect of creatine supplementation on human myofibrillar and sarcoplasmic protein synthesis after resistance exercise.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Creatine increased muscle creatine by ~21% but had no additional effect on muscle protein synthesis after resistance exercise.
Most people assume creatine helps build muscle by boosting protein synthesis right after workouts — a key mechanism for growth. This study directly contradicts that idea in the short term.
Practical Takeaways
Continue using creatine if it helps with workout performance, but don’t expect it to directly accelerate muscle protein synthesis immediately after a single session.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Creatine increased muscle creatine by ~21% but had no additional effect on muscle protein synthesis after resistance exercise.
Most people assume creatine helps build muscle by boosting protein synthesis right after workouts — a key mechanism for growth. This study directly contradicts that idea in the short term.
Practical Takeaways
Continue using creatine if it helps with workout performance, but don’t expect it to directly accelerate muscle protein synthesis immediately after a single session.
Publication
Journal
American journal of physiology. Endocrinology and metabolism
Year
2003
Authors
Magali Louis, J. Poortmans, M. Francaux, J. Berré, N. Boisseau, E. Brassine, D. Cuthbertson, Kenneth Smith, J. Babraj, T. Waddell, M. Rennie
Related Content
Claims (4)
Creatine helps build muscle mostly by keeping muscle cells hydrated and reducing breakdown, not by making your body produce more muscle protein.
Taking a lot of creatine for 5 days doesn’t seem to boost muscle repair or growth right after a workout in young, healthy guys—even though it does increase creatine levels in their muscles. So, creatine might help muscles grow in other ways, not by speeding up protein building right after exercise.
Doing a tough leg workout with lots of sets makes your leg muscles start building new proteins much faster—2 to 3 times more than usual—right after the workout.
If young, healthy guys take a lot of creatine for 5 days straight, their muscles soak it up and end up with about 21% more creatine inside them.