Physical activity and the risk of Parkinson disease

To investigate whether greater physical activity is associated with a lower risk of Parkinson disease (PD).The authors prospectively followed 48,574 men and 77,254 women who provided information on physical activity in 1986 or in early adulthood. During the follow-up, a total of 252 (male) and 135 (female) incident PD cases were identified.In men, greater baseline physical activity was associated with a lower PD risk; compared with the lowest...