Catrine Tudor-Locke

Professor and Associate Dean for Research
160A Totman Building

Physical Activity and Health Lab


B.A., the University of Lethbridge, 1985; M.Sc., Dalhousie University, 1992; Certificate in Adult Education, St. Francis Xavier University, 1995; Ph.D., the University of Waterloo, 2000; Postdoctoral fellowship, Prevention Research Center, School of Public Health at the University of South Carolina.

Area(s) of Specialization: 

walking, gait speed, personal monitoring, step counting, ambulation

Research Description: 

I am a walking behavior researcher and am a recognized world leader in objective physical activity assessment and promotion, specifically focused on pedometer or accelerometer-determined ambulatory activity captured as steps/day across the lifespan. I am a trained program evaluator and adult educator focused on practical applications in objective monitoring measurement and intervention. I have also published on clinical vs. free-living gait analysis, including interpretation of cadence as a simple indicator of ambulatory patterns. I have also published work documenting the relationship between time spent in sedentary behavior and relatively low ambulatory activity, measured as steps/day.

Publication List: 

PubMed Search Link

Key Publications: 

I have led the field in elevating the acceptance of step counting using a variety of body worn motion sensors for researchers, practitioners, and lay audiences. I have set benchmark values for interpretation, standardized measurement protocols, and developed program templates centered around step counting. I have recently pushed the field into using free-living indices of cadence to further describe ambulatory behavior in terms of “natural effort.” I have established a step-defined index for sedentary behavior that has been applied by many researchers and practitioners. Examples of this work include:

Tudor-Locke, C., Craig, C.L., Thyfault, J.P., & Spence, J.C. A step-defined sedentary lifestyle index: < 5,000 steps/day. Applied Physiology Nutrition, and Metabolism. 2013 Feb;38(2):100-14.

Tudor-Locke, C., & Rowe, D.A. Using cadence to study free-living ambulatory behavior. Sports Medicine, 2012; 42(5):381-398.

Tudor-Locke, C. & Lutes, L. Why do pedometers work? A reflection upon the factors related to successfully increasing physical activity. Sports Medicine, 2009, 39(12):981-993

Tudor-Locke, C. & Bassett Jr., D.R. How many steps/day are enough? Preliminary pedometer indices for public health. Sports Medicine, 2004, 34(1): 1-8.

Tudor-Locke, C., & Myers, A.M. Methodological considerations for researchers and practitioners using pedometers to measure physical (ambulatory) activity. Research Quarterly for Exercise and Sport 2001; 72(1):1-12.