The metabolic signature of excessive endurance exercise—A prospective study in Tour de France cyclists

Key Points

• Excessive endurance exercise alters the metabolic signature in cyclists, indicating potential health effects.
• A notable increase in lactate levels was observed among Tour de France cyclists during the study.
• Observational analysis focused on the metabolic responses of cyclists during intensive training regimens.
• These findings may highlight risks associated with high levels of endurance exercise, warranting further investigation to assess long-term effects.