Engineering Innovation Podcast and Radio Series

Exercising Arteries

PostedOctober 15, 2006

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Randy Atkins:  Plugged blood vessels cause heart attacks and stroke.  Shu Chien, a University of California bioengineer, says blockages usually happen at worn artery branch points, where blood repeatedly slams into their walls as it changes direction.

Shu Chien:  One of the benefits of exercise is to change the effects of mechanical situations in the artery tree, so that it’s not always hitting the same spot.

Randy Atkins:  Chien says varied blood flow and pressure rates also stimulate growth of stress-resistant fibers in arteries.

Shu Chien:  And that is why the exercise needs to be done for sufficient period of time and also has to be done with sufficient frequency and intensity.

Randy Atkins:  With the National Academy of Engineering, Randy Atkins, WTOP Radio.