Article

Chronic aerobic exercise training is associated with improved
endothelial function and arterial stiffness and favourable long-term
cardiovascular effects. DESIGN: We investigated the acute effects of continuous
moderate intensity aerobic exercise (CAE) and high intensity interval aerobic
exercise (hIAE) on endothelial function and arterial stiffness in healthy
participants. METHODS: Twenty healthy men were recruited to this cross-over study. They participated in two exercise sessions: (a) CAE, volume at 50% of
maximum aerobic work for 30 minutes; and (b) hIAE, interval maximum aerobic work
for 30 minutes. Endothelial function was evaluated by flow-mediated dilation in
the brachial artery. The carotid femoral pulse wave velocity and the femoral
dorsalis pedis pulse wave velocity were measured as indices of central aortic and
peripheral arterial stiffness. Measurements were carried out before and
immediately after each exercise session. RESULTS: There was no statistically
significant difference in the baseline measurements before CAE and hIAE with
respect to flow-mediated dilation, the carotid femoral pulse wave velocity and
the femoral dorsalis pedis pulse wave velocity (p = NS). Both CAE and hIAE
significantly improved the flow-mediated dilation compared with baseline (p <
0.001). Similarly, the femoral dorsalis pedis pulse wave velocity was improved
after CAE and hIAE (p < 0.005), whereas the carotid femoral pulse wave velocity
was not significantly affected (p = NS). CONCLUSION: Both CAE and hIAE can
favourably affect endothelial function, suggesting another cardioprotective
effect of acute exercise. These types of aerobic exercise have a different impact
on the central and peripheral arterial stiffness.
CI - (c) The European Society of Cardiology 2016.

Langue : ANGLAIS