High-Intensity Exercise Enhances Conduit Artery Vascular Function in Older Adults

This study aimed to investigate the potential intensity–dependent effects of an acute bout of exercise on conduit and resistance artery function in healthy older adults.MethodsEleven healthy older adults (five males/six females, 66 ± 1 yr) completed 30 min of recumbent cycling at 50%–55% (low intensity) and 75%–80% (high intensity) of their age-predicted HRmax on two separate study visits. Doppler ultrasound measures of brachial artery flow-mediated dilation (FMD) and reactive hyperemia were taken at baseline, 10 min postexercise, and 1 h postexercise. In addition, cardiovascular hemodynamics and brachial shear rate were measured every 5 min during exercise.ResultsBrachial artery FMD was enhanced 10 min after high-intensity exercise (4.8% ± 0.2% to 9.1% ± 0.3%, P
Source: Medicine and Science in Sports and Exercise - Category: Sports Medicine Tags: Applied Sciences Source Type: research