NEW YORK (Reuters Health) Mar 15 – In the US, non-Hispanic black race and low levels of leisure-time physical activity (LTPA) are independently associated with an increased risk of hypertension, according to a report published in the February issue of Preventive Medicine.
While hypertension is known to be more prevalent among blacks than among other ethnic groups, the racial contribution to risk was unclear as blacks also have higher rates of physical inactivity, another risk factor for hypertension.
To sort out these factors, Dr. David R. Bassett, Jr., from the University of Tennessee at Knoxville, and colleagues analyzed data from 14,899 adults who participated in the third National Health and Nutrition Examination Survey (NHANES III).
Non-Hispanic blacks and whites who engaged in moderate to vigorous LTPA were 27% less likely to have hypertension than their sedentary peers, the investigators note. However, as shown previously, blacks were more likely to report sedentary lifestyles than whites.
After controlling for several factors including LPTA, blacks were 77% more likely to have hypertension than whites. In contrast, Mexican Americans were 25% less likely than whites to have hypertension.
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