This study found that cyclists in Iowa, including those who ride for recreation and to commute to work, contribute substantial spending associated with commuting and cycling trips within the state. The physical activity from cycling is associated with as much as $354 million lower annual health care costs due to fewer cases of heart and lung disease, and other diseases associated with less physical activity.
Lankford, J., S. Lankford, O. Grybovych, B. Bowles, K. Fleming, K. Fuller, J. Lankford, and J. Printz. 2011. Economic and Health Benefits of Bicycling in Iowa. Sustainable Tourism and Environmental Program, University of Northern Iowa. Cedar Falls, IA.