The Claim
High protein intake from plant-based sources, ranging from 13.2% to 17.3% of total energy and exceeding 2.3 g/kg/day, can meet the protein requirements of athletes during a 30-day ultra-endurance event without supplementation.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Athletes following a plant-based diet and consuming more than 2.3 grams of protein per kilogram of body weight per day during a 30-day ultra-endurance ride met their protein needs using only plant foods, without any supplements.
See the scientific wording
Two athletes on plant-based diets consumed over 2.3 g/kg/day of protein during a 30-day ultra-endurance ride, with protein intake ranging from 13.2% to 17.3% of total energy, suggesting that high protein needs can be met through plant sources without supplementation.
When athletes eat large amounts of plant-based foods rich in protein, their digestive system breaks down the food into amino acids, which enter the bloodstream and are used by muscles to repair and build tissue, even during long periods of intense exercise.
What the research says
1 studyTwo cyclists rode across Canada for a month eating only plants, and they got more than enough protein from their food—no pills or powders needed. Their bodies stayed strong and kept going, proving plants can fuel even the toughest endurance efforts.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.