Effects of exercise intensity and cardiorespiratory fitness on the acute response of arterial stiffness to exercise in older adults.

European Journal of Applied Physiology
Maria PerissiouChristopher D Askew

Abstract

Increased arterial stiffness is observed with ageing and in individuals with low cardiorespiratory fitness ([Formula: see text]O2peak), and associated with cardiovascular risk. Following an exercise bout, transient arterial stiffness reductions offer short-term benefit, but may depend on exercise intensity. This study assessed the effects of exercise intensity on post-exercise arterial stiffness in older adults with varying fitness levels. Fifty-one older adults (72 ± 5 years) were stratified into fitness tertiles ([Formula: see text]O2peak: low-, 22.3 ± 3.1; mid-, 27.5 ± 2.4 and high-fit 36.3 ± 6.5 mL kg-1 min-1). In a randomised order, participants underwent control (no-exercise), moderate-intensity continuous exercise (40% of peak power output; PPO), and higher-intensity interval exercise (70% of PPO) protocols. Pulse wave velocity (PWV), augmentation index (AIx75) and reflection magnitude (RM) were assessed at rest and during 90 min of recovery following each protocol. After control, delta PWV increased over time (P < 0.001) and delta RM was unchanged. After higher-intensity interval exercise, delta PWV (P < 0.001) and delta RM (P < 0.001) were lower to control in all fitness groups. After moderate-intensity continuous exer...Continue Reading

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Citations

Feb 13, 2019·Journal of Aging and Physical Activity·Guy El Hajj BoutrosAntony D Karelis
Mar 11, 2020·Journal of Sports Sciences·Kym Joanne PriceAmanda Clare Benson
Oct 22, 2019·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·Maria PerissiouChristopher D Askew

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Statistical Package for Social Sciences
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