The Claim
Creatine supplementation combined with resistance training produces region-specific effects on muscle strength and lean mass in older adults, with consistent benefits in the lower limbs and transient benefits in the upper limbs within a 32-week period.
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 older adults, taking creatine with resistance training increases muscle strength and lean mass in the legs consistently over 32 weeks, but the same effect in the arms is temporary and fades within that time.
See the scientific wording
The benefits of creatine supplementation with resistance training on muscle strength and lean mass in older adults are not uniform across body regions, with lower limb outcomes showing consistent benefit and upper limb outcomes showing only transient benefit within 32 weeks.
Creatine helps muscle cells store more energy, allowing the legs to work harder and longer during strength training. This extra effort makes leg muscles grow stronger and bigger over time. Arms also get a boost at first, but they don't sustain the same level of effort during training, so their muscles don't keep growing after a few months.
What the research says
1 studyThis study found that for older adults, taking creatine with leg workouts reliably builds leg strength and muscle, even over time. But for arms, the benefit only lasts about 8 months — after that, it disappears. So yes, legs benefit more consistently than arms.
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.