Presentation at the SFMES-SFTS Congress 2025
Our laboratory was represented at the 18th National Congress of Sports Medicine and Traumatology, jointly organized by SFMES (French Society of Exercise and Sports Medicine) and SFTS (French Society of Sports Traumatology), held in Angers, France from September 17-19, 2025.
Cardiopulmonary Responses to High-Power Eccentric Cycling
Jonathan Tremblay presented Marc-Étienne Villeneuve’s research on cardiopulmonary responses to eccentric cycling, conducted in collaboration with Ruddy Richard (Université Clermont Auvergne).
Summary
This study explores cardiopulmonary responses to high-power eccentric cycling (~1000W) compared to isoenergetic concentric cycling. Nine participants who completed 16 eccentric training sessions performed incremental exercise tests in each modality.
Key findings:
- Maximal eccentric power was 4.2 times higher than concentric mode (756±110 vs. 181±50 W) at similar oxygen consumption
- Arteriovenous oxygen difference was lower in eccentric mode, suggesting reduced peripheral oxygen extraction
- Cardiac output (19.5 vs. 16.2 L/min) and heart rate (173 vs. 148 bpm) were significantly higher
- Systemic vascular resistance decreased significantly, indicating peripheral adaptation
Conclusion
These results highlight the potential of eccentric cycling as an exercise modality enabling high mechanical work at low metabolic cost, particularly for populations with reduced cardiovascular capacity.
This work highlights the excellent research conducted by Marc-Étienne Villeneuve in our laboratory.
The LPEBA Team