Plant vs Animal Protein: Why Does This Choice Matter?
In recent years, plant-based proteins have surged in popularity in sports nutrition markets — driven by environmental awareness, ethical choices, and health trends. Meanwhile, animal proteins remain the gold standard for muscle growth and athletic performance. So which should you choose?
Advantages of Animal Protein
Animal proteins (whey, casein, egg, meat, fish) are complete proteins — they contain all 9 essential amino acids in adequate quantities. Their DIAAS score (Digestible Indispensable Amino Acid Score) is often 1.0 or above.
Key properties of animal protein:
- High biological value and DIAAS
- High leucine content — important for mTOR activation (Norton & Layman, 2006)
- Better digestibility — averaging 90–95%
- Optimally supports muscle mass gain
Whey protein is the flagship animal protein in sports supplementation. MyProtein Impact Whey Protein 1 kg Strawberry Cream and Scitec 100% Whey Protein Professional 2350g Coconut are excellent examples of quality animal-based protein products available at maxfit.ee.
Advantages of Plant Protein
Plant proteins (pea, rice, soy, hemp) have become increasingly competitive thanks to combination strategies and manufacturing advances.
Key properties of plant protein:
- Lower environmental footprint
- Often contain additional nutrients (fibre, phytonutrients)
- Suitable for vegan and vegetarian lifestyles
- Some variants (especially soy) offer complete amino acid profiles
- Pea-rice combinations approach animal protein amino acid profiles
BioTechUSA Vegan Protein 500g Banana is one of the most popular plant-based protein products in Estonia. Browse our plant protein range.
Comparison Table: Plant vs Animal Protein
| Feature | Animal Protein | Plant Protein |
|---|---|---|
| Complete protein | Yes (all 9 EAAs) | Often no (except soy) |
| DIAAS score | High (1.0–1.2) | Lower (0.5–0.8) |
| Digestibility | 90–95% | 70–90% |
| Leucine content | High | Lower |
| Fibre content | Virtually none | Contains fibre |
| Cholesterol | Contains | None |
| Allergenicity | Milk, eggs | Soy, nuts |
| Environmental footprint | Higher | Lower |
| Price | Low–medium | Medium–higher |
Can Plant Proteins Support Muscle Growth as Effectively?
This is a hotly debated question. Several studies show that with sufficient quantity and correctly combined plant proteins, similar muscle growth to animal proteins is achievable (Messina et al., 2018).
Key conditions for successful plant protein consumption:
- Sufficient quantity — plant protein digestibility is lower, so you need more (up to 10–20% more)
- Combination — pea + rice = complete amino acid profile
- Leucine supplementation — consider additional leucine supplementation
- Focus on total daily protein — not just a single serving
A meta-analysis by van Vliet et al. (2015) showed that the difference between plant and animal proteins in muscle gain decreases significantly when total protein intake is adequate (≥ 1.6 g/kg/day).
Who Should Choose Which?
Animal protein suits:
- Those seeking maximum muscle mass gain
- Athletes not following dietary ethics
- Those wanting a simpler amino acid profile
Plant protein suits:
- Vegans and vegetarians
- Those with dairy or egg intolerances
- Environmentally conscious consumers
- Those wanting to diversify their protein sources
Summary
The choice between proteins depends on personal values, nutritional needs, and goals. Science confirms that excellent athletic results are achievable with both — the question is quantity and combination. Maxfit.ee offers a wide range of both animal-based and plant-based proteins.
FAQ
Is plant protein as effective for building muscle?
Yes, if you consume enough (1.6–2.2 g/kg/day) and combine different plant protein sources (e.g. pea + rice), muscle growth is comparable to animal proteins. The difference diminishes with sufficient total intake.
Which plant protein has the highest amino acid profile?
Soy protein is the only complete plant protein containing all 9 essential amino acids in adequate quantities. A pea-rice combination is the next best option.
Do vegan athletes need more protein?
Yes, in general, athletes on a plant-based diet are advised to consume about 10–20% more protein than those on an animal-based diet, as plant protein digestibility is lower.
References
- Norton, L. E., & Layman, D. K. (2006). Leucine regulates translation initiation of protein synthesis in skeletal muscle after exercise. Journal of Nutrition, 136(2), 533S–537S.
- Messina, M., Lynch, H., Jackman, J. A., & Kendall, C. W. (2018). No difference between the effects of supplementing with soy protein versus animal protein on gains in muscle mass and strength in response to resistance exercise. International Journal of Sport Nutrition and Exercise Metabolism, 28(6), 674–685.
- van Vliet, S., Burd, N. A., & van Loon, L. J. (2015). The skeletal muscle anabolic response to plant- versus animal-based protein consumption. Journal of Nutrition, 145(9), 1981–1991.
- Gorissen, S. H., & Witard, O. C. (2018). Characterising the muscle anabolic potential of dairy, meat and plant-based protein sources in older adults. Proceedings of the Nutrition Society, 77(1), 20–31.
- Pinckaers, P. J., Churchward-Venne, T. A., Bailey, D., & van Loon, L. J. (2021). Leucine-enriched essential amino acid supplementation during moderate steady state exercise enhances postexercise muscle protein synthesis. American Journal of Clinical Nutrition, 114(2), 604–616.
