The Claim

In healthy young untrained men who consume 1.6 grams of protein per kilogram of body weight daily and undergo resistance training, a high-protein plant-based diet leads to similar gains in leg lean mass, muscle fiber cross-sectional area, and leg-press strength compared to a protein-matched omnivorous diet, with no statistically significant differences observed after 12 weeks.

Source: High-Protein Plant-Based Diet Versus a Protein-Matched Omnivorous Diet to Support Resistance Training Adaptations: A Comparison Between Habitual Vegans and Omnivores

What the research says

Supports is higher

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

Supports
60score
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.

Correlation
1 study reviewed
In plain English

If young guys who don’t work out much eat a plant-based or meat-based diet with the same amount of protein and lift weights for 12 weeks, they’ll gain about the same amount of leg muscle and strength.

See the scientific wording

In healthy young untrained men consuming 1.6 grams of protein per kilogram of body weight daily and undergoing resistance training, a high-protein plant-based diet is associated with similar gains in leg lean mass, muscle fiber cross-sectional area, and leg-press strength compared to a protein-matched omnivorous diet, with no statistically significant differences observed after 12 weeks of training.

What the research says

1 study
  1. Study: High-Protein Plant-Based Diet Versus a Protein-Matched Omnivorous Diet to Support Resistance Training Adaptations: A Comparison Between Habitual Vegans and Omnivores

    The study found that young men who ate only plant-based protein gained just as much muscle and strength as those who ate animal protein, as long as they got the same amount of protein and did the same workouts.

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.