While at Western in the early 1960s, Hayden researched fitness programs for disabled children. He has a notable interest in sports and fitness activities for children, especially for those who have mental disabilities. His research became known to the
Joseph P. Kennedy Jr. Foundation, and for two years Hayden helped produce and build a fitness program and establish legislation to accommodate persons with disabilities. In 1968, he organized the first Chicago
Special Olympics with the Kennedy Foundation and the
Chicago Park District, and legally incorporated "Special Olympics Inc". Today this program supplies training and friendly rivalry for more than three million athletes with disabilities in over 170 countries. Hayden served as executive director of the Special Olympics from 1968 to 1972, and was a special consultant to the Canadian Special Olympics from 1994 to 2000. == Honours ==