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Ppr5.5

Pea Protein Research

Mostly mechanism / observationalHigh safety

5 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most Pea Protein studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from high-quality randomised trials published 2020–2025 with a typical study size of 47 participants.

Based on 5 studies · 5 RCTs · 231 total participants

Confidence

Moderate

By outcome

Lean body mass & muscle growthSupports muscle protein synthesis and strength gains with resistance training · 4-12 weeks
Too few graded studies2 studies
RecoveryAids post-exercise recovery comparably to whey · Acute-days
Too few graded studies2 studies
Muscle strength & powerSupports muscle protein synthesis and strength gains with resistance training · 4-12 weeks
Too few graded studies1 study

Active research area

4 studies in the last 5 years

20202025

1RCTCited 30×n=92 · small study2020

A randomized trial found no significant difference between pea protein and whey for post-exercise recovery, though whey showed the clearer effect on damage markers.

Nieman DC et al. · Nutrients (2020)

No significant pea-vs-whey difference in recovery outcomes
Whey showed the clearer effect on muscle-damage markers
Pea is a viable plant-based option when dosed adequately

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2RCTn=27 · very small study2025

A randomized trial found resistance training with pea protein increased myofibrillar protein synthesis.

Korzepa M et al. · The American journal of clinical nutrition (2025)

Increased muscle protein synthesis with training + pea protein
Supports muscle-building use
Comparable anabolic response when dose adequate

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3RCTn=15 · very small study2022

A randomized study measured the ileal amino-acid digestibility of pea protein vs casein.

Guillin FM et al. · The American journal of clinical nutrition (2022)

Pea protein is well digested, though slightly below casein
Good but not top-tier digestibility
Lysine-rich, lower in methionine

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4RCTn=50 · small study2023

A randomized trial compared amino-acid bioavailability across protein sources (cricket, pea, whey).

Lanng SK et al. · European journal of nutrition (2023)

Pea protein delivered amino acids effectively
Slightly slower/lower than whey
Viable plant protein source

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5RCTn=47 · small study2023

A randomized trial found whey, but not pea protein, reduced a specific marker — highlighting source differences.

Spoelder M et al. · Nutrients (2023)

Some endpoints favored whey over pea
Source-dependent effects
Pea still a useful protein source

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View in Research Library

Pea Protein Research

Mostly mechanism / observational

Effects of Whey and Pea Protein Supplementation on Post-Eccentric Exercise Muscle Damage: A Randomized Trial.

Resistance training increases myofibrillar protein synthesis in middle-to-older aged adults consuming a typical diet with no influence of protein source: a randomized controlled trial.

Real ileal amino acid digestibility of pea protein compared to casein in healthy humans: a randomized trial.

Influence of protein source (cricket, pea, whey) on amino acid bioavailability and activation of the mTORC1 signaling pathway after resistance exercise in healthy young males.

Supplementation with Whey Protein, but Not Pea Protein, Reduces Muscle Damage Following Long-Distance Walking in Older Adults.