Richard Troiano, Ph.D.
Program Director, Risk Factor Assessment Branch

Epidemiology and Genomics Research Program
Division of Cancer Control and Population Sciences
National Cancer Institute
National Institutes of Health
9609 Medical Center Drive, Rm. 4E138, MSC 9762
Bethesda, MD 20892
(For express delivery, use Rockville, MD 20850)

Interest Areas

  • Physical activity assessment/monitoring
  • Body weight assessment/monitoring


  • Ph.D. – Human Nutrition
    Cornell University
  • M.N.S. – Clinical Nutrition
    Cornell University


Dr. Richard (Rick) Troiano is a Program Director in the Risk Factor Assessment Branch of the Epidemiology and Genomics Research Program in NCI's Division of Cancer Control and Population Sciences (DCCPS). Dr. Troiano promotes the validation and use of accelerometer-based devices in the assessment of physical activity in research and population surveillance. He is interested in promoting improved understanding of the information obtained from devices and self-reports and the analytic implications of different data sources. Dr. Troiano also supports federal efforts to promote health-enhancing physical activity, as evidenced by his recent detail to the Office of the Surgeon General to support development of Step it Up! The Surgeon General's Call to Action to Promote Walking and Walkable CommunitiesExternal Web Site Policy and his service as Coordinator for the development of 2008 Physical Activity Guidelines for AmericansExternal Web Site Policy and co-executive secretary for the 2018 Physical Activity Guidelines for Americans.

Prior to joining EGRP, Dr. Troiano was an Epidemiologist in the Risk Factor Monitoring and Methods Branch in the Applied Research Program (now the Health Care Delivery Research Program), DCCPS. In this capacity, he worked with the National Health and Nutrition Examination Survey (NHANES)External Web Site Policy to implement the use of devices in the survey to obtain objective measures of participants' physical activity-related movement and sleep, as well as body strength.

In 1993, Dr. Troiano entered government service and the Commissioned Corps of the U.S. Public Health Service as an Epidemic Intelligence Service Officer with the Centers for Disease Control and Prevention (CDC). He joined the Division of Health Examination Statistics of CDC's National Center for Health Statistics (NCHS), where he helped design the body composition, physical activity, and physical fitness components of NHANES. These components include dual X-ray absorptiometry (DXA) to measure body composition; an expanded physical activity questionnaire to capture activity from transportation, occupation, and household tasks in addition to recreation; and a submaximal treadmill test for cardiovascular fitness. While at NCHS, Dr. Troiano published pivotal papers documenting the dramatic increase in overweight among children and adolescents in the United States.


Piercy KL, Dorn JM, Fulton JK, Janz KF, Lee SM, McKinnon RA, Pate RR, Pfeiffer KA, Young DR, Troiano RP, Lavizzo-Mourey R. Opportunities for public health to increase physical activity among youthsExternal Web Site Policy. Am J Public Health. 2015 Mar;105 (3):421-6.

Bassett DR, Troiano RP, McClain JJ, Wolff DL. Accelerometer-based physical activity: total volume per day and standardized measuresExternal Web Site Policy. Med Sci Sports Exerc. 2014 Aug 6. [Epub ahead of print]

Troiano RP, McClain JJ, Brychta RJ, Chen KY. Evolution of accelerometer methods for physical activity researchExternal Web Site Policy. Br J Sports Med. 2014 July:48 (13):1019-23.

Tooze JA, Troiano RP, Carroll RJ, Moshfegh AJ, Freedman LS. A measurement error model for physical activity level as measured by a questionnaire with application to the 1999-2006 NHANES questionnaireExternal Web Site Policy. Am J Epidemiol. 2013 Jun 1;177 (11):1199-208.

Smith AW, Cronin KA, Bowles H, Willis G, Jacobs DR Jr, Ballard-Barbash R, Troiano RP. Reproducibility of physical activity recall over fifteen years: longitudinal evidence from the CARDIA studyExternal Web Site Policy. BMC Public Health. 2013 Feb 28;13:180.

Tudor-Locke C, Camhi SM, Troiano RP. A catalog of rules, variables, and definitions applied to accelerometer data in the National Health and Nutrition Examination Survey, 2003-2006External Web Site Policy. Prev Chronic Dis. 2012;9:E113.

Pronk NP, Krebs-Smith SM, Galuska DA, Liu B, Kushner RF, Troiano RP, Clauser SB, Ballard-Barbash R, Smith AW. Knowledge of energy balance guidelines and associated clinical care practices: The U.S. National Survey of Energy Balance Related Care among Primary Care PhysiciansExternal Web Site Policy. Prev Med. 2012 Jul;55 (1):28-33.

Haskell WL, Troiano RP, Hammond JA, Phillips MJ, Strader LC, Marquez DX, Grant SF, Ramos E. Physical activity and physical fitness: standardizing assessment with the PhenX ToolkitExternal Web Site Policy. Am J Prev Med. 2012 May;42 (5):486-92.

Cook CM, Subar AF, Troiano RP, Schoeller DA. Relation between holiday weight gain and total energy expenditure among 40- to 69-y-old men and women (OPEN study)External Web Site Policy. Am J Clin Nutr. 2012 Mar;95 (3):726-31.

Matthews CE, George SM, Moore SC, Bowles HR, Blair A, Park Y, Troiano RP, Hollenbeck A, Schatzkin A. Amount of time spent in sedentary behaviors and cause-specific mortality in US adultsExternal Web Site Policy. Am J Clin Nutr. 2012 Feb;95 (2):437-45.

Freedson P, Bowles HR, Troiano R, Haskell, W. Assessment of physical activity using wearable monitors: Recommendations for monitor calibration and use in the fieldExternal Web Site Policy. Med Sci Sports Exerc. 2012 Jan; 44(1 Suppl 1): S1-4.

Troiano RP, Pettee Gabriel KK, Welk GJ, Owen N, Sternfeld B. Reported physical activity and sedentary behavior: why do you ask?External Web Site Policy J Phys Act Health. 2012 Jan;9 Suppl 1:S68-75.

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