- Animal proteins have a good balance of essential amino acids and a high amino acid score (eggs, dairy, meat are 100).
- Animal sources are often superior in leucine content and absorption rate, which are crucial for muscle synthesis.
- Even with plant-based proteins, deficiencies can be compensated for by combining and increasing intake, but conscious effort is required.
- In practice, incorporating animal protein immediately after training or at breakfast significantly improved recovery and satisfaction.
Introduction: Not All Proteins Are Created Equal
Protein makes up approximately 20% of our body weight and a large part of our muscles, making it a vital nutrient. However, even though we broadly categorize it as "protein," the content varies significantly depending on the food source. Particularly, animal and plant proteins differ in their essential amino acid ratios and absorption rates, and the choice can impact results, especially from the perspective of exercise performance and muscle maintenance/growth.
Fundamental Differences Between Animal and Plant Proteins
Content and Amino Acid Balance
Animal foods (meat, fish, eggs, dairy products) tend to have a higher protein content per equal amount and a better balance of essential amino acids. Eggs, milk, beef, and chicken are often rated with an amino acid score of 100, allowing for efficient replenishment of essential amino acids in food. Soybeans are excellent among plant-based proteins with a high score, but grains and potatoes tend to be deficient in some essential amino acids (similar data can be found in the Ministry of Health, Labour and Welfare's nutritional guidance materials).
Bioavailability and Absorption Rate
Proteins are digested and absorbed into the bloodstream as amino acids. Animal-derived proteins like whey are absorbed quickly, which is particularly advantageous for recovery immediately after training. Casein, on the other hand, is absorbed slowly, making it suitable for consumption before bedtime. Plant-based proteins may have slightly lower absorption and utilization efficiency, requiring adjustments in intake and combinations.
Why We Recommend Animal Protein from a Performance and Muscle-Building Perspective
Leucine and Muscle Protein Synthesis (MPS)
Leucine is a crucial amino acid for switching on muscle protein synthesis. It is said that consuming approximately 2-3g of leucine per meal promotes muscle synthesis. Generally, when comparing the same amount of food, animal foods contain more leucine, which is advantageous for individuals who engage in strength training and for maintaining muscle in the elderly.
What We Actually Experienced
When the geefee team tried it, we felt faster recovery after training when using whey, and our satiety and satisfaction also increased. Just by incorporating a small amount of animal protein on busy mornings or after exercise, the satisfaction of our meals and our performance often changed.
Practical Intake Methods and Tips for Those Primarily Plant-Based
Guidelines and Timing
While it depends on activity level and goals, people who exercise generally aim for 1.2-2.0g/day per kg of body weight. Especially, consuming easily absorbed protein within 30-60 minutes immediately after training promotes recovery.
Tips for Vegetarians and Those Primarily Plant-Based
Even with a completely vegetarian (vegan) diet, the balance of essential amino acids can be maintained by combining legumes, grains, and nuts. The key is to be mindful of soy products (tofu, natto, tempeh) and combinations (rice + beans, bread + bean paste), and to consume slightly larger quantities. Additionally, utilizing supplements like whey or soy protein can make intake easier if necessary.
Summary
In conclusion, animal proteins are often advantageous for muscle building and performance improvement in terms of essential amino acid balance, leucine content, and absorption rate. However, even with plant-based proteins, the necessary amount can be met with ingenuity, and consideration for environmental and ethical aspects is also important. We recommend a balanced diet that skillfully incorporates animal protein according to your goals, while also utilizing the benefits of plant-based foods.
Disclaimer: The information in this article is for general informational purposes only and does not constitute medical advice. Please consult a qualified healthcare professional before making any health-related decisions.