The Claim
The increase in muscle hypertrophy observed with creatine supplementation combined with resistance training is not attributable to water retention, as direct imaging modalities (MRI, CT, ultrasound) measure changes in muscle tissue independently of total lean mass, which includes fluid.
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.
Creatine supplementation with resistance training increases muscle size, and this increase is not caused by water retention because imaging techniques like MRI and ultrasound measure only muscle tissue, not fluid.
See the scientific wording
The observed increase in muscle hypertrophy from creatine supplementation combined with resistance training is likely not due to water retention, as direct imaging measures (MRI, CT, ultrasound) isolate muscle tissue changes rather than total lean mass, which includes fluid.
Creatine lets muscles produce more energy during intense workouts, allowing for heavier and longer training sessions. This increased effort directly stresses muscle fibers, triggering them to grow bigger. At the same time, creatine pulls water into muscle cells, making them swell, which signals the cells to build more protein and stop breaking down existing protein. Together, these effects cause real muscle tissue to increase, not just fluid.
What the research says
1 studyThe study used special scans to see if muscles actually got bigger with creatine and weight training — and they did, just a little. This means the growth isn’t just water swelling; it’s real muscle tissue.
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.