Effectiveness of Behavioral Interventions to Modify Physical Activity Effectiveness of Behavioral Interventions to Modify Physical Activity Behaviors in General Populations and Cancer Patients and Survivors This outdated information has been archived and is available for reference purposes only. To access the archived document, please go to: http://archive.ahrq.gov/clinic/epcarch.htm. Current as of June 2004 Internet Citation: Effectiveness of Behavioral Interventions to Modify Physical Activity . June 2004. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/redirects/pacan.html