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The impact of different types of aerobic exercise on vascular function

Session Poster session 3

Speaker Evangelos Oikonomou

Event : ESC Congress 2015

  • Topic : preventive cardiology
  • Sub-topic : Exercise Testing
  • Session type : Poster Session

Authors : D Athanasiou (Athens,GR), G Siasos (Athens,GR), G Terzis (Athens,GR), A Stasinaki (Athens,GR), E Dimitropoulos (Athens,GR), E Oikonomou (Athens,GR), M Zaromytidou (Athens,GR), K Mourouzis (Athens,GR), S Tsalamandris (Athens,GR), D Tousoulis (Athens,GR)

Authors:
D. Athanasiou1 , G. Siasos1 , G. Terzis2 , A. Stasinaki2 , E. Dimitropoulos1 , E. Oikonomou1 , M. Zaromytidou1 , K. Mourouzis1 , S. Tsalamandris1 , D. Tousoulis1 , 1University of Athens Medical School, 1st Cardiology Department, “Hippokration” Hospital - Athens - Greece , 2University of Athens, Faculty of Physical Education and Sports Science - Athens - Greece ,

Citation:
European Heart Journal ( 2015 ) 36 ( Abstract Supplement ), 466

Background: Chronic exercise training improves endothelial function in individuals with cardiovascular diseases. Endothelial function and arterial stiffness are key players in the pathophysiology of atherosclerotic disease.

Purpose: To investigate the acute effects of continuous moderate-intensity aerobic exercise (CAE) and high intensity interval aerobic exercise (hIAE) on endothelial function, central and peripheral arterial stiffness in healthy subjects.

Methods: Twenty healthy men (mean aged 23±3 yr) were recruited in this cross over study. They participated in two exercise sessions: a) CAE: volume at 50% of maximum aerobic work on a cycle ergometer for 30 min and b) hIAE: interval maximum aerobic work on a cycle ergometer for 30 min. Endothelial function was evaluated by flow-mediated dilation (FMD) in the brachial artery. Carotid femoral pulse wave velocity (cfPWV) was measured as an index of the central aortic stiffness, while femoral tibial PWV (ftPWV) was measured as an index of peripheral arterial stiffness. Measurements were carried out before and immediately after each exercise session.

Results: There was no statistically significant difference in baseline measurements of the participants before CAE and hIAE, concerning FMD, cfPWV and ftPWV (p=NS for all). Importantly, both CAE (8.57±2.53% vs. 6.37±1.48%, p<0.001) and hIAE (8.48±2.59% vs. 5.95±1.77%, p<0.001) caused a significant improvement in FMD compared to baseline measurements. Moreover, CAE and hIAE had no impact in cfPWV, compared to baseline measurements (p=NS for both). Interestingly, compared to baseline measurements, CAE (8.17±1.48m/sec vs. 9.26±1.11m/sec, p<0.003) and hIAE (8.25±.80m/sec vs. 9.14±1.07m/sec vs., p<0.002) significantly improved ftPWV.

Conclusion: Endothelial function is favorably affected by both continuous moderate-intensity aerobic exercise and high intensity interval aerobic exercise which may explain the cardioprotective effects of exercise on atherosclerosis progression. Interestingly, only peripheral arterial stiffness improved by both types of aerobic exercise. Further studies are needed to elucidate how different patterns of aerobic training can affect cardiovascular health

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