Perception of Pressure on Foot Asanka S. Rodrigo 1 , Ravindra S. Goonetilleke 1 , Shuping Xiong 2 1 Human Performance Laboratory, Department of Industrial Engineering and Logistics Management, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 2 Department of Industrial Engineering and Management, Shanghai Jiao Tong University, Shanghai, China ABSTRACT This study attempted to identify the factors that affect the pressure pain threshold (PPT) on the heel region of the foot. Using dimensional analysis, it was found that probe area (A), indentation speed (V) and their interaction contribute towards PPT. A power form of these factors can be used to model PPT with an exponent of 0.63. Keywords: Perception, Power Law, Foot, Pressure Pain Threshold, Dimensional Analysis, Modeling. INTRODUCTION Human interaction with different types of equipment always involves various types of forces. When the force per unit area commonly known as pressure is excessive, people will experience pain or discomfort (Gonzalez et al., 1999). In this respect,