Participate in a research study on running biomechanics conducted by Dr. Jae Kun Shim in the Dept. of Kinesiology at University of Maryland, College Park. What will you get for participating? (1) Under Armour Running Shoes, (2) Running Shorts, and (3) 40% Discount Card Who is eligible? Females (age 18-50 yrs) with size 7 feet The Task: (i) Two 2 hour sessions for running in multiple shoes (ii) Running twice a week for 20 min with a new pair of shoes for 4 weeks (iii) Running in one pair of shoes at the end of 4 weeks We will track your running action and energy expenditure using 3D motion capturing and a metabolic unit. The purpose of this study is to investigate the changes in running biomechanics and physiology by changing the shoe structure. It is the first step towards developing a shoe design that minimizes injuries. If you are interested in, or have any questions about, the research project, please contact us Project Coordinator: Arick Auyang, PhD Email: [log in to unmask]