The Claim
During a 30-day ultra-endurance cycling event, athletes following plant-based diets maintained a physical activity level of 3.7–4.1 without significant loss of body composition, comparable to professional cyclists in multi-week races.
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 on plant-based diets sustained high levels of physical activity during a 30-day ultra-endurance cycling event without losing significant body mass, matching the energy expenditure levels of professional cyclists in multi-week races.
See the scientific wording
During a 30-day ultra-endurance cycling event, two athletes on plant-based diets sustained a physical activity level (PAL) of 3.7–4.1, comparable to professional cyclists in multi-week races, indicating that extreme energy expenditure can be maintained without significant body composition loss.
The body adjusts to burn massive amounts of energy by using plant-based proteins more efficiently, keeps muscle from breaking down, and shifts fuel use to burn fat instead of muscle tissue, so weight stays stable even while working extremely hard.
What the research says
1 studyTwo regular cyclists ate only plants and rode across Canada for a month, burning energy at the same crazy-high rate as pro racers — and they didn’t lose muscle or get fatter. Their bodies adapted by eating more and getting enough protein.
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.