The Claim
In elderly men over 70, a protein intake of 1.6 g/kg/day increases lean mass and leg power independently of energy balance, as both groups in the study experienced moderate negative energy balance.
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 men over 70, consuming 1.6 grams of protein per kilogram of body weight daily leads to greater increases in lean mass and leg power compared to lower intake, even when both groups are in the same state of moderate energy deficit.
See the scientific wording
In elderly men over 70, the beneficial effects of 1.6 g/kg/day protein on lean mass and leg power are not explained by differences in energy balance, as both groups experienced moderate negative energy balance.
Eating more protein raises amino acid levels in the blood, which turns on a cellular switch that tells muscles to build more protein. Over time, this makes muscles bigger and stronger. The extra protein also helps nerves communicate better with muscles, allowing them to generate more power when moving.
What the research says
1 studyEven though both groups ate fewer calories than they needed, the older men who ate more protein gained muscle and got stronger, while those who ate less protein lost muscle. This shows that eating more protein, not just eating more calories, is what helped them.
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.