[Relationship between physical activity and hemodynamic parameters in adults]

Area of Science:

• Cardiovascular Health
• Exercise Physiology
• Vascular Biology

Background:

• Arterial stiffness, indicated by augmentation index (AI) and carotid intima-media thickness (IMT), is a predictor of cardiovascular events.
• Physical activity is recognized as a key factor in maintaining cardiovascular health.
• Understanding the specific relationship between different intensities of physical activity and vascular markers is crucial for preventative strategies.

Purpose of the Study:

• To investigate the association between accelerometer-measured physical activity and vascular stiffness markers (central and peripheral augmentation index) and carotid IMT in adults.
• To determine if the intensity of physical activity influences these vascular parameters.

Main Methods:

• A cross-sectional analysis of 263 adults from the EVIDENT study.
• Physical activity quantified over 7 days using ActigraphGT3X accelerometers (counts/min).
• Vascular parameters measured using carotid ultrasound for IMT and Sphygmo Cor system for CAIx and PAIx.

Main Results:

• Physical activity demonstrated an inverse correlation with peripheral augmentation index (PAIx) and carotid intima-media thickness (IMT).
• Higher levels of vigorous activity were inversely associated with CAIx and PAIx.
• These inverse associations, particularly for CAIx, remained significant after adjusting for confounding factors in multiple regression analysis.

Conclusions:

• Physical activity, especially vigorous activity, is associated with improved vascular health markers in adults.
• The findings support the role of regular exercise in reducing arterial stiffness and IMT, contributing to cardiovascular disease prevention.