Exercise May Induce Strokes for People with Blocked Arteries

Certain conditions can make the increased heart rate associated with exercise dangerous: Researchers found that an elevated heart rate can induce a stroke in patients with highly blocked carotid arteries. Contrastingly, for healthy patients and those with only slightly blocked arteries, exercise is beneficial for maintaining healthy blood flow. In healthy patients, an elevated heart rate increases and stabilizes the drag force blood exerts on the vessel wall, reducing stenosis risk. But for patients already experiencing stenosis, it may not be as beneficial.

Blood Flow-restricted Resistance Exercise Could Help Counteract Age-related Muscle Loss

Low-load blood flow-restricted resistance exercise helped counter age-related muscle decay “with a modest exercise volume and in a very time-efficient manner.” The study is published ahead of print in the Journal of Applied Physiology. It was chosen as an APSselect article for May.

MRI Finds Circadian Variations in Men’s and Women’s Renal Blood Flow

Article title: Circadian variation in renal blood flow and kidney function in healthy volunteers monitored with noninvasive magnetic resonance imaging Authors: Per Eckerbom, Peter Hansell, Eleanor Cox, Charlotte Buchanan, Jan Weis, Fredrik Palm, Susan Francis, Per Liss From the authors: “In…

Quick, Frequent Exercise Breaks Improve Blood Vessel Health in Type 2 Diabetes

Frequent exercise breaks during prolonged sitting may be better for blood vessel health in people with type 2 diabetes than less-frequent activity interruptions. The first-of-its-kind study is published ahead of print in the American Journal of Physiology-Heart and Circulatory Physiology.

Simulations Characterize Turbulence Caused by Common Connection for Dialysis

The complex interplay among the arteriovenous grafts, the vessels they connect, and the blood they transport has been difficult to simulate with computers, but one new method provides a way. Researchers report in Physics of Fluids on a series of simulations that reconstructed the fluid dynamics affected by the insertion of an AVG.