The Ineos Grenadiers cycling team has faced scrutiny over their use of carbon monoxide rebreathing tests, a technique that has sparked controversy and raised questions about its safety and ethical implications. According to a recent report, the team introduced this controversial method just days before new UCI rules came into effect, putting them in direct violation of the regulations. The team's use of carbon monoxide rebreathing, which involves inhaling carbon monoxide to optimize altitude training, was first revealed during the 2024 Tour de France. While the UCI had issued non-enforceable guidelines on the practice months earlier, the team's timing and frequency of testing were deemed problematic. The technique, established in the 1980s, allows for precise dosing of carbon monoxide into the lungs, tracking key blood values, and optimizing heat and altitude training. However, the potential lethality of carbon monoxide has raised concerns. The Ineos Grenadiers defend their actions, claiming they have always adhered to UCI rules. The controversy highlights the delicate balance between pushing the boundaries of performance enhancement and ensuring the safety and fairness of the sport. As the debate continues, it prompts discussions on the ethical use of experimental techniques in professional cycling.
