BUFFALO, N.Y., Aug. 12 (UPI) — A morning walk or bike ride to school could reduce stress reactivity in children, which is linked to later heart risk, U.S. researchers say.
Senior investigator James Roemmich, a University at Buffalo associate professor, and graduate students Maya Lambiase and Heather Barry say cardiovascular reactivity — changes in heart rate and blood pressure due to stress — is associated with the beginnings of cardiovascular disease in children and atherosclerosis. Atherosclerosis, in adults, is the build-up of cholesterol, calcium, fat and other substances in artery walls.
The research team had 20 boys and 20 girls — all Caucasian, ages10-14 — visit the Behavioral Medicine Research Laboratory.
Half of the children sat in a comfortable chair and watched a 10-minute slide show of images of a suburban neighborhood to simulate a ride to school. The other half walked on a treadmill — while images of a suburban neighborhood were projected onto a screen — at a self-selected pace for 1 mile, wearing a book bag containing 10 percent of their body weight.
The study, published in Medicine & Science in Sports & Exercise, finds, on average, during this activity, heart rate increased by about three beats per minute in children who walked, compared with about 11 beats per minute in children who “rode” to school.
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