The Claim

In resistance-trained individuals undergoing a 40% caloric restriction for four weeks with a high-protein diet (2.3 g/kg/day), high-volume resistance training (30 sets per muscle group per week) results in significantly greater increases in 5-repetition maximum strength for chest press, right leg press, and left leg press compared to low-volume resistance training (12 sets per muscle group per week).

Source: A 4-week caloric restriction with high volume resistance-training and high-protein diet does not increase fat-free mass sparing but increases strength.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports

46score

Challenges

0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect

1 study reviewed

In plain English

Among trained individuals on a calorie-restricted, high-protein diet for four weeks, performing 30 sets per muscle group per week leads to greater gains in maximum strength for chest press and leg presses than performing 12 sets per muscle group per week.

See the scientific wording

In resistance-trained individuals undergoing a 40% caloric restriction for four weeks with a high-protein diet (2.3 g/kg/day), high-volume resistance training (30 sets per muscle group per week) leads to significantly greater increases in 5-repetition maximum strength for chest press, right leg press, and left leg press compared to low-volume training (12 sets per muscle group per week).

Why this might work

Doing more sets of heavy lifts while eating less food but getting enough protein makes the nervous system send stronger signals to the muscles, allowing more muscle fibers to contract at once, which makes the person stronger even without gaining muscle mass.

Supported mechanismbased on 1 study

What the research says

1 study

Study: A 4-week caloric restriction with high volume resistance-training and high-protein diet does not increase fat-free mass sparing but increases strength.
When people who already lift weights go on a strict diet, doing more sets of exercises like bench press and leg press makes them stronger — even if they don’t keep more muscle. This study proved it.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.