[Reproducibility and development of pulse wave velocity at rest and during exertion].
OBJECTIVE
to search in which situation the PWV is the most reproducible.


METHODS
PWV is measured with a continuous doppler technique along the subclavial radial arterial segment on the right forearm. 30 normotensive subjects (20-30 years) are studied twice running at 24-hour interval at rest and during stress (ergometric bicycle, stress levels: 50, 75, 100 watts/mn).


METHODS
Student test and correlation when the data are normally distributed.


RESULTS
mean PWV increases progressively with blood pressure during stress. REST: 10.0, 50W: 11.3, 75W: 12.33, 100W: 13.32, 4 mn rest: 10.6. Mean differences (MD) with standard deviations (SD) and correlation (COR) are as following: (Table: see text). If we take into consideration MD, SD and COR between the 2 stress tests, 75W level appears to be the most reproducible.


CONCLUSIONS
these data must be taken into account when using PWV to appreciate the vascular effect of some medications especially in hypertension.
D000328:Adult; D001794:Blood Pressure; D006801:Humans; D008297:Male; D005082:Physical Exertion; D011674:Pulse; D013312:Stress, Physiological / Q000503:physiopathology
Etude de la reproductibilité et de l'évolution de la vitesse de propagation de l'onde de pouls au repos et à l'effort.