The Claim
In resistance-trained males undergoing six weeks of moderate caloric restriction at 30 kcal/kg/day with high protein intake at 2.8 g/kg fat-free mass, whole-body lean mass loss is approximately 0.72 kg and is not significantly different between training volumes of 12 and 20 sets per muscle group per week.
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.
When resistance-trained men reduce their calorie intake moderately for six weeks while consuming high protein, they lose about 0.72 kg of lean mass regardless of whether they do 12 or 20 sets per muscle group per week.
See the scientific wording
During six weeks of moderate caloric restriction (30 kcal/kg/day) with high protein intake (2.8 g/kg fat-free mass), resistance-trained males lose approximately 0.72 kg of whole-body lean mass regardless of whether they perform 12 or 20 sets per muscle group per week, indicating that training volume does not significantly alter lean mass loss in this context.
When the body gets fewer calories but plenty of protein, it shifts to using fat for energy instead of breaking down muscle. Muscle tissue stays mostly intact because the body prioritizes preserving protein for essential functions, no matter how much resistance training is done.
What the research says
1 studyWhen men who lift weights cut calories but eat lots of protein, they lose about the same amount of muscle whether they do 12 or 20 sets per muscle group per week — the study found no real difference between the two.
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.