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The researchers also looked at the data according to gender. After the researchers accounted for age, race, socioeconomic factors (education and income) and stroke risk factors, the results revealed that men who exercised at least four times a week still had a lower risk of stroke than men who exercised one to three times per week. In contrast, there was no association between frequency of exercise and stroke risk among women in the study. However, there was a trend towards a similar reduction in stroke risk for those who exercised one to three times a week and four or more times a week compared to those who were inactive.
“This could be related to differences in the type, duration, and intensity of physical activity between men and women,” said Dr. Howard. “This could also be due to differences in the perception of what is intense physical activity enough to work up a sweat.”
The results should encourage doctors to stress the importance of exercise when speaking with their patients, Dr. Howard said.
“Physical inactivity is a major modifiable risk factor for stroke. This should be emphasized in routine physician check-ups along with general education about the benefits of exercise on stroke risk factors including high blood pressure, diabetes and being overweight or obese,” she said.
The study suggests that men should consider exercising at least four times a week.
REGARDS will continue to assess stroke risk factors to look for long-term patterns in the study population. “Findings from this study, including the current physical activity results, will ultimately help us to identify potential targets for immediate intervention as well as for future clinical trials aimed at preventing stroke and its consequences,” said Dr. Moy.
