The Claim
In young, healthy men undergoing 10 days of 40% energy restriction, consuming 2.4 g/kg/day of protein combined with unilateral resistance exercise results in a 14% increase or preservation of fasted muscle protein synthesis rates in the exercised muscle, whereas consuming 1.2 g/kg/day of protein without resistance exercise results in a 27% reduction in fasted muscle protein synthesis rates.
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 young, healthy men losing weight through a 40% calorie reduction over 10 days, consuming 2.4 grams of protein per kilogram of body weight with resistance exercise maintains or increases muscle protein synthesis by 14% in the trained muscle, while consuming 1.2 grams of protein per kilogram without exercise reduces muscle protein synthesis by 27%.
See the scientific wording
In young, healthy men undergoing 10 days of 40% energy restriction, consuming 2.4 g/kg/day of protein combined with unilateral resistance exercise preserves or increases fasted muscle protein synthesis rates by up to 14% in the exercised muscle, compared to a 27% reduction in those consuming 1.2 g/kg/day without exercise, suggesting higher protein intake and resistance training mitigate muscle loss during short-term weight loss.
When a person eats less food, their muscles normally make less protein, but eating more protein and lifting weights together prevent this drop. The extra protein provides more leucine, which turns on a key signal that tells muscle cells to build protein. At the same time, lifting weights pulls on the muscle fibers, which also turns on that same signal. Together, they keep the protein-building machine running even when energy is low.
What the research says
1 studyWhen young men ate less food for 10 days, those who ate more protein and lifted weights kept their muscle-making rates almost the same — even slightly better — while those who ate less protein and didn’t lift weights lost a lot of muscle-making ability.
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.