The Claim
In healthy older men performing resistance training, a daily protein intake of 1.6 g/kg/d has no significant effect on muscular power or muscular endurance compared to a daily protein intake of 0.8 g/kg/d.
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.
For healthy older men doing strength training, eating 1.6 grams of protein per kilogram of body weight per day does not result in greater gains in muscular power or endurance than eating 0.8 grams per kilogram per day.
See the scientific wording
In healthy older men performing resistance training, a daily protein intake of 1.6 g/kg/d does not significantly improve muscular power or muscular endurance compared to 0.8 g/kg/d, suggesting these adaptations are primarily driven by training volume rather than protein intake.
Eating more protein increases amino acids in the blood, which turn on a cellular switch that tells muscle cells to build more protein. This leads to bigger muscle fibers over time. However, the ability to generate force quickly or sustain repeated efforts does not improve because those traits depend on how often and how intensely the muscles are trained, not on how much protein is available.
What the research says
1 studyThe study found no statistically significant differences between the high and low protein groups for muscular power or endurance, despite identical training protocols. This indicates protein intake above 0.8 g/kg/d does not enhance these specific adaptations in this population.
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.