Glenn A Gaesser, professor1, David C Poole, professor2, Siddhartha S Angadi, assistant professor3 1College of Health Solutions, Arizona State University, Phoenix, AZ, USA 2Departments of Kinesiology and Anatomy and Physiology, Kansas State University, Manhattan, KS, USA 3Department of Kinesiology, School of Education and Human Development, University of Virginia, Charlottesville, VA, USA Correspondence to: G A Gaesser Glenn.gaesser{at}asu.edu Accepted 29 November 2022 Abstract Objective To compare the rate of energy expenditure of low efficiency walking with high efficiency walking. Design Laboratory based experimental study. Participants 13 healthy adults (six women, seven men) with no known gait disorder, mean (±standard deviation) age 34.2±16.1 years, height 174.2±12.6 cm, weight 78.2±22.5 kg, and body…