Endurance athletes had significantly lower characteristic aortic impedance than sedentary adults, which was the strongest predictor of stroke volume and inversely associated with aortic compliance.
Observational
Does long-term endurance training alter aortic characteristic impedance compared to a sedentary lifestyle in young adults?
Aortic impedance is significantly lower in young endurance athletes compared to sedentary adults, suggesting it is a key determinant of ventricular-vascular coupling adapted to long-term training.
This is the first study to investigate aortic impedance with the noninvasive, simultaneous recordings of aortic pressure using SphygmoCor XCEL and flow using phase-contrast MRI. We found that the characteristic impedance (Zc) is significantly lower in endurance athletes than sedentary adults, is the strongest predictor of stroke volume (SV), and is inversely associated with aortic compliance. These findings suggest that aortic impedance is a key determinant of the ventricular-vascular coupling adapted to long-term training in endurance athletes.
Fukuie et al. (Thu,) conducted a observational in Healthy (endurance athletes vs sedentary adults). Endurance training (endurance athletes) vs. Sedentary adults was evaluated on Characteristic impedance (Zc). Endurance athletes had significantly lower characteristic aortic impedance than sedentary adults, which was the strongest predictor of stroke volume and inversely associated with aortic compliance.