Parkinson's disease has afflicted Davis Phinney.
Davis Phinney . Davis was diagnosed with Parkinson 's disease at the age of 40 , and established the Davis Phinney Foundation in 2004 , a registered 501 ( c ) ( 3 ) nonprofit organization . The Boulder , Colorado-based foundation is dedicated to improving the lives of people with Parkinson 's disease -- today and in the future . Parkinson's disease . People with parkinsonism who have increased the public 's awareness of the condition include actor Michael J. Fox , Olympic cyclist Davis Phinney , and late professional boxer Muhammad Ali .