Naslov
Effects of acute sympathetic activation on the central artery stiffness after strenuous endurance exercise

Autori
Gentilin, Alessandro ; Tarperi, Cantor ; Skroce, Kristina ; Cevese, Antonio ; Schena, Federico

Izvornik
Sport Sciences for Health (1824-7490) 18 (2022), 4; 1439-1447

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Pulse wave velocity · Aortic stiffness · Aerobic exercise · Sympathetic activation · Finger photoplethysmography

Sažetak
Purpose Augmented central arterial stiffness (CAS) increases cardiovascular risk. CAS can be augmented by physical exer-cise and sympathetic activation (SYMP) induced by stressful stimuli. Interestingly, sympathetic vasoconstriction triggered bya sympathetic stimulant is augmented immediately after a strenuous half-marathon compared to at rest. This study assessedwhether CAS also augments more post- than pre-half-marathon in response to SYMP. Such assessment takes on relevanceconsidering the growing popularity of strenuous, long- distance endurance exercises. Methods 13 healthy recreational runners (age 46.1 ± 6.5 years ; VO2 max 54.23 ± 9.31 mlO2/min/kg) provided the follow-ing measurements prior to and within 10 min following a strenuous half-marathon: beat-by-beat aortic pulse wave velocity(aPWV ; index of CAS), mean blood pressure, and heart rate assessment. Measures were performed at rest and during a2 min handgrip-mediated SYMP. The effects of the half-marathon and SYMP were assessed by two-way repeated- measuresANOVA. Results Measurements of the aPWV pre- and post-race were not significantly different (7.5± 0.8 vs 7.8 ± 0.8 m/s, p = 0.34 ; pre- vs post-race). 2 min of SYMP increased the baseline aPWV post-race (7.8 ± 0.8 vs 8.4 ± 0.8, p = 0.003 ; rest vs SYMP)but not pre-race (7.5 ± 0.8 vs 7.9 ± 0.9, p = 0.21). Conclusion The baseline aPWV assessed 7 to 8 min after a strenuous half- marathon is similar to that pre-race in healthyrunners. This agrees with previous studies suggesting CAS being at or below resting values > 5 min following completionof aerobic exercises. The same sympathetic stressor augments CAS to a greater extent 8–10 min post-race than pre-race, suggesting a greater post-exercise stiffening of central artery segments triggered by the same task.

Izvorni jezik
Engleski

POVEZANOST RADA