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Short Strolls After Meals May Lower Diabetes Risk

Walking 15 minutes three times a day was better for blood sugar levels than one 45-minute walk, small study found

WebMD News from HealthDay

By Kathleen Doheny

HealthDay Reporter

WEDNESDAY, June 12 (HealthDay News) -- Older adults at risk for getting diabetes who took a 15-minute walk after every meal improved their blood sugar levels, a new study shows.

Three short walks after eating worked better to control blood sugar levels than one 45-minute walk in the morning or evening, said lead researcher Loretta DiPietro, chairwoman of the George Washington University School of Public Health and Health Services in Washington, D.C.

"More importantly, the post-meal walking was significantly better than the other two exercise prescriptions at lowering the post-dinner glucose level," DiPietro added.

The after-dinner period is an especially vulnerable time for older people at risk of diabetes, DiPietro said. Insulin production decreases, and they may go to bed with extremely high blood glucose levels, increasing their chances of diabetes.

About 79 million Americans are at risk for type 2 diabetes, in which the body doesn't make enough insulin or doesn't use it effectively. Being overweight and sedentary increases the risk. DiPietro's new research, although tested in only 10 people, suggests that brief walks can lower that risk if they are taken at the right times.

The study did not, however, prove that it was the walks causing the improved blood sugar levels.

"This is among the first studies to really address the timing of the exercise with regard to its benefit for blood sugar control," she said. In the study, the walks began a half hour after finishing each meal.

The research is published June 12 in the journal Diabetes Care.

For the study, DiPietro and her colleagues asked the 10 older adults, who were 70 years old on average, to complete three different exercise routines spaced four weeks apart. At the study's start, the men and women had fasting blood sugar levels of between 105 and 125 milligrams per deciliter. A fasting blood glucose level of 70 to 100 is considered normal, according to the U.S. National Institutes of Health.

The men and women stayed at the research facility and were supervised closely. Their blood sugar levels were monitored the entire 48 hours.

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