Cited by 64Muscle metabolism and nutritionMuscle Physiology and DisordersSports Performance and Training

Vegan and omnivorous high protein diets support comparable daily myofibrillar protein synthesis rates and skeletal muscle hypertrophy in young adults

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Monteyne, Alistair J., Coelho, Mariana O.C., Murton, Andrew J., Abdelrahman, Doaa R., Blackwell, Jamie R., Koscien, Christopher P., Knapp, Karen M., Fulford, Jonathan +4 more·2023·The Journal of Nutrition

Abstract

It remains unclear whether non–animal-derived dietary protein sources (and therefore vegan diets) can support resistance training-induced skeletal muscle remodeling to the same extent as animal-derived protein sources. In Phase 1, 16 healthy young adults (m = 8, f = 8; age: 23 ± 1 y; BMI: 23 ± 1 kg/m2) completed a 3-d dietary intervention (high protein, 1.8 g·kg bm−1·d−1) where protein was derived from omnivorous (OMNI1; n = 8) or exclusively non-animal (VEG1; n = 8) sources, alongside daily unilateral leg resistance exercise. Resting and exercised daily myofibrillar protein synthesis (MyoPS) rates were assessed using deuterium oxide. In Phase 2, 22 healthy young adults (m = 11, f = 11; age: 24 ± 1 y; BMI: 23 ± 0 kg/m2) completed a 10 wk, high-volume (5 d/wk), progressive resistance exercise program while consuming an omnivorous (OMNI2; n = 12) or non–animal-derived (VEG2; n = 10) high-protein diet (∼2 g·kg bm−1·d−1). Muscle fiber cross-sectional area (CSA), whole-body lean mass (via DXA), thigh muscle volume (via MRI), muscle strength, and muscle function were determined pre, after 2 and 5 wk, and postintervention. To investigate whether a high-protein, mycoprotein-rich, non-animal-derived diet can support resistance training-induced skeletal muscle remodeling to the same extent as an isonitrogenous omnivorous diet. Daily MyoPS rates were ∼12% higher in the exercised than in the rested leg (2.46 ± 0.27%·d−1 compared with 2.20 ± 0.33%·d−1 and 2.62 ± 0.56%·d−1 compared with 2.36 ± 0.53%·d−1 in OMNI1 and VEG1, respectively; P < 0.001) and not different between groups (P > 0.05). Resistance training increased lean mass in both groups by a similar magnitude (OMNI2 2.6 ± 1.1 kg, VEG2 3.1 ± 2.5 kg; P > 0.05). Likewise, training comparably increased thigh muscle volume (OMNI2 8.3 ± 3.6%, VEG2 8.3 ± 4.1%; P > 0.05), and muscle fiber CSA (OMNI2 33 ± 24%, VEG2 32 ± 48%; P > 0.05). Both groups increased strength (1 repetition maximum) of multiple muscle groups, to comparable degrees. Omnivorous and vegan diets can support comparable rested and exercised daily MyoPS rates in healthy young adults consuming a high-protein diet. This translates to similar skeletal muscle adaptive responses during prolonged high-volume resistance training, irrespective of dietary protein provenance. This trial was registered at clinicaltrials.gov as NCT03572127.

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  • Planning and adhering to a higher protein vegan/vegetarian diet is eminently achievable, and consideration to food choices can achieve protein intakes in line with current recommendations.

    “However, multiple studies [[62], [63], [64]] have shown that planning and adhering to a high(er) protein vegan/vegetarian diet is eminently achievable, which we illustrate in sample diets where consideration to food choices can achieve protein intakes in line with current recommendations (Supplementary Table 1 and Supplementary Table 2).”

    From Nutritional Considerations for the Vegan Athlete (2023) · cites this paper as [64]

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Authors
Monteyne, A. J., Coelho, M. O. C., Murton, A. J., Abdelrahman, D. R., Blackwell, J. R., Koscien, C. P., Knapp, K. M., Fulford, J., Finnigan, T. J. A., Dirks, M. L., Stephens, F. B., & Wall, B. T.
Affiliations
  • University of Exeter (GB)
  • The University of Texas Medical Branch at Galveston (US)
  • Quorn (United Kingdom) (GB)
Corresponding author
Wall, Benjamin T.
Venue
The Journal of Nutrition
Publisher
Elsevier BV
Published
2023-06
Volume
153
Issue
6
Pages
1680-1695
ISSN
0022-3166 (ISSN-L)
OpenAlex
W4321498235
Cited by
64
References
75
Citations by year
2026: 11 · 2025: 24 · 2024: 20 · 2023: 9
FWCI
9.26
Type
journal article
Language
en
Open access
Locations
  • Journal of Nutrition (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
  • Socio-Environmental Systems Modeling (submittedVersion, cc-by)
  • Open Research Exeter (University of Exeter) (submittedVersion, cc-by)
Funders
  • University of Exeter
  • National Institute on Aging (P30AG024832)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
vegan diet, high-protein diet, myofibrillar protein synthesis, skeletal muscle hypertrophy, resistance training, mycoprotein, muscle fiber cross-sectional area, lean body mass, muscle strength, muscle function, young adults, deuterium oxide tracer, thigh muscle volume
MeSH terms
Vegans, Diet, Vegan, Diet, High-Protein, Dietary Proteins, Humans, Hypertrophy, Muscle, Skeletal, Muscle Strength, Resistance Training

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