* Using a self-reported measure of physical activity, for which respondents considered physical activity they did for at least 10 minutes in the past 7 days, participants were classified into four different activity levels: vigorous, moderate, light and no activity. In this self-report measure, vigorous was defined as activities which require hard physical effort such as: running, cycling, swimming or competitive sports. The next level, moderate, was defined as activities which require more effort than normal such as: yoga, tai chi and weight lifting. Light activity was defined as walking, while those who do not do any activity classified themselves into the no activity level. Segments are often referred to as vigorous exercisers, moderate exercisers, light exercisers and non-exercisers based on this measure of self-categorization.
2013 Sleep in America®Poll Task Force Max Hirshkowitz, PhD (Chair) Baylor College of Medicine and VAMC Sleep Center
Matthew Buman, PhD Arizona State University
Christopher Kline, PhD University of Pittsburgh School of MedicineBarbara A. Phillips, MD, MSPH, FCCP University of Kentucky College of Medicine Prof. Dr. Marco Tulio de Mello Universidade Federal de Sao Paulo Shawn D. Youngstedt, PhD University of South Carolina and Dorn VA Medical Center The National Sleep Foundation began surveying American sleep health and behaviors in 1991. NSF releases the poll findings as part of its 16th annual National Sleep Awareness Week® campaign, held March 3-10, 2013, that culminates with the change to Daylight Saving Time on March 10th. With the change of clocks, NSF wishes to remind Americans not to lose an hour of sleep. Follow events on facebook and twitter @sleepfoundation. The National Sleep Foundation hosts the Sleep Health and Safety conference March 1-2, 2013 in Washington, DC to advance sleep health education for health professionals and public policy leaders. NSF Background The National Sleep Foundation is dedicated to improving sleep health and safety through education, public awareness, and advocacy. It is well-known for its annual Sleep in America® poll. The Foundation is a charitable, educational and scientific not-for-profit organization located in Arlington, VA. Its membership includes researchers and clinicians focused on sleep medicine, professionals in the health, medical and science fields, individuals, patients, families affected by drowsy driving and more than 900 healthcare facilities throughout North America. The National Sleep Foundation does not solicit nor accept corporate support for its annual Sleep in America® polls; its polls are developed by an independent task force of sleep scientists and government representatives who provide expertise in developing the survey instrument, analysis and final report. Information about the NSF, the current and former polls and a database of sleep professionals and sleep centers with media contacts can be found at www.sleepfoundation.org