Macro partitioning
Animal-based proteins stimulate muscle protein synthesis and support muscle mass more effectively than plant-based proteins due to higher digestibility, superior essential amino acid profiles (particularly leucine), and lower amino acid oxidation.
If your goal is maximizing muscle growth, prioritize animal proteins (whey, casein, meat, eggs) because they are digested faster and contain more leucine, which triggers muscle building more efficiently. If you rely on plant proteins, you must consume larger quantities (e.g., >30g per meal) or blend sources (like rice and pea) to ensure you get enough of all essential amino acids, particularly leucine, to overcome their lower digestibility.
The majority of these studies have reported that good-quality animal proteins have a greater ability to enhance muscle protein synthesis rate and support muscle mass than plant-based proteins
Why this rating
Based on a critical review of multiple clinical and animal studies showing consistent trends, though individual study results vary.
Source
The Role of the Anabolic Properties of Plant- versus Animal-Based Protein Sources in Supporting Muscle Mass Maintenance: A Critical Review
Insaf Berrazaga et al. · Nutrients · 2019
DOI 10.3390/nu11081825
More from this paper
- Increasing the quantity of plant-based protein intake (specifically >30g per meal) can compensate for its lower anabolic quality and stimulate muscle protein synthesis rates comparable to lower doses of animal proteins.Good
- Blending multiple plant protein sources or fortifying them with essential amino acids (specifically leucine) can improve their anabolic quality to match animal proteins.Good
Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →