Hard ride: traffic-related pollution may alter heart function in urban cyclists.

摘要

People who ride bicycles along roadways may incur considerable exposure to traffic-related air pollutants that have been associated with adverse respiratory and cardiovascular effects in epidemiologic studies. A new study examined changes in heart rate variability (HRV) and respiratory factors in cyclists exposed to traffic-related air pollutants and found that ultrafine particles as well as ozone and nitrogen dioxide (NO_2) altered autonomic regulation of the heart [EHP 119(10):1373-1378; Weichenthal et al.].