The U.S. Department of Health and Human Services (HHS) would like to recognize the efforts of the Physical Activity Guidelines Steering Committee that oversaw the work of the Physical Activity Guidelines Advisory Committee and the Physical Activity Guidelines writing group: Rear Admiral Penelope Slade Royall, PT, MSW (Office of Disease Prevention and Health Promotion; Director, Secretary's Prevention Priority); Captain Richard P. Troiano, PhD (National Institutes of Health; Physical Activity Guidelines Coordinator and Advisory Committee Executive Secretary); Melissa A. Johnson, MS (President's Council on Physical Fitness and Sports; Physical Activity Outreach Coordinator); Harold W. (Bill) Kohl III, PhD (Centers for Disease Control and Prevention (CDC); Physical Activity Science Coordinator until October 2007); and Janet E. Fulton, PhD (CDC; Physical Activity Science Coordinator beginning October 2007).

The Department is grateful for the contributions of the HHS scientists and staff who participated in the Physical Activity Guidelines writing group that developed and created this document: David M. Buchner, MD, MPH (chair); Jennifer Bishop, MPH; David R. Brown, PhD; Janet E. Fulton, PhD; Deborah A. Galuska, PhD, MPH; Commander Julie Gilchrist, MD; Jack M. Guralnik, MD, PhD; Jennifer M. Hootman, PhD, ATC; Melissa A. Johnson, MS; Harold W. (Bill) Kohl III, PhD; Sarah M. Lee, PhD; Kathleen A. (Kay) Loughrey, MPH, MSM; Judith A. McDivitt, PhD; Denise G. Simons-Morton, MD, PhD; Ashley Wilder Smith, PhD, MPH; Wilma M. Tilson, MPH; Captain Richard P. Troiano, PhD; Jane D. Wargo, MA; Gordon B. Willis, PhD; and the scientific writer/editor, Anne Brown Rodgers.

The Department also gratefully acknowledges the work conducted by the 2008 Physical Activity Guidelines Advisory Committee. Their extensive review of the scientific literature on physical activity and health and their committee deliberations are summarized in the Physical Activity Guidelines Advisory Committee Report, 2008. The Committee’s report provided the basis for the 2008 Physical Activity Guidelines for Americans. The Advisory Committee consisted of William L. Haskell, PhD (chair); Miriam E. Nelson, PhD (vice-chair); Rod K. Dishman, PhD; Edward T. Howley, PhD; Wendy M. Kohrt, PhD; William E. Kraus, MD; I-Min Lee, MBBS, ScD; Anne McTiernan, MD, PhD; Russell R. Pate, PhD; Kenneth E. Powell, MD, MPH; Judith G. Regensteiner, PhD; James H. Rimmer, PhD; and Antronette K. (Toni) Yancey, MD, MPH.

The Department also acknowledges the important role of those who provided comments throughout the Physical Activity Guidelines development process. Finally, the Department appreciates the contributions of numerous other departmental scientists, staff, policy officials, and the external peer reviewers who reviewed the 2008 Physical Activity Guidelines for Americans and provided helpful suggestions.

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