Physiological Demands of Cyclists during an Ultra-Endurance Relay Race: A Field Study Report To date, we have a lot of knowledge for individual athletes in extreme expenses, but there are no data for long-term burdens that are completed in a team. A Spanish group has examined team cyclists at a 24-hour wheel race.
There were clear differences in dependence on the number of drivers in the team. The study can be found under https://pubmed.ncbi.nlm.nih.gov/22135913/