The study explored whether reducing sedentary time alone can improve vascular endothelial function in older adults, a key factor in cardiovascular health.
Overall, participants decreased their sedentary time significantly, but improvements in vascular function (measured by FMD%) were not directly correlated to those reductions in sedentary behavior.
Notably, a specific group that engaged in at least 20 minutes of moderate-intensity physical activity each day showed better vascular health, highlighting the importance of combining reduced sedentary time with increased physical activity.
Sedentary aging negatively impacts vascular and cardiac function, and the study investigates whether moderate-intensity physical activity (PA) can improve these aspects in older adults.
A 12-week randomized controlled trial with 102 older adults examined the effects of different PA interventions, including a control group, a pedometer-only group, and a group with an interactive website to promote physical activity.
Results showed no significant changes in left ventricular (LV) structure or performance despite increased PA levels, suggesting that longer durations, higher intensities, or earlier initiation of exercise may be needed for observed benefits.