1. Abstract Results The In Shoe Pressure System project is a research effort to reduce running injuries and prevent FootStrike. Despite the money that has been dispensed into reducing running injuries by designing better shoes, the ideal way to reduce running injuries may be to simply work on foot posture finding a way to see the impact of the force and pressure in different parts of the foot while running. In Shoe Pressure System seems to be the very reasonable solution to prevent FootStrike. Saba Naghipour Department of Electrical and Systems Engineering Overview Procedure Highlights Experiment Setup Biomechanics of Running Heelstrike runners experience more running injuries such as hip injuries, IT band syndrome and hip bursitis. The Heelstrike runners land on their heel first so that the impact force of the heel on the ground causes significant transient force to their body via the skeletal system. Even though the heel is the hardest bone of the body, it does not absorb the impact force but it combines the gravitational forces and compresses them toward the skeleton. Daniel Lieberman, a researcher at Harvard University said: “Heelstrike can cause a direct force of up to three times more than a runner’s body weight on the feet, ankles, knees and hips between 1000-1500 times per time.” Since MidFoot Strike is considered a preferred type of FootStrike and we consider the HeellStrike as the worst case, Mid and Heel are the most important parts of foot that we consider in this research. Effects of running barefoot or with shoes in relation to foot strikes Effects of running barefoot or with shoes in relation to foot strikes Barefoot runners are mostly front foot strikers when running. The heel cushions and arch supports within athletic shoes have made our feet weaker and adapted many people to favor HeelStrike. That is the reason that changing back to barefoot may cause injury to weakened feet. Three basic types of FootStrikes: I.Heelstrike(75%) II.Midfoot strike (24%) III.Toestrike(1%) In Shoe Pressure Measurement and Analysis in relation to Foot Strike References http://barefootrunning.fas.harvard.edu/4BiomechanicsofFootStrike.html http://www.livestrong.com/article/553745-the-impact-of-running-sneakers-on-the- foot/#ixzz1rPBjHyRI http://www.tekscan.com/medical/system-fscan1.html http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=05378500 Future Work 1.Develop a portable technology suitable for outdoor activities. 2.Add additional sensors to reduce the error and be more accurate Acknowledge I would like to thank Professor Morley for all of his help. I am so grateful to Professor Richter, who made this project possible. Many thanks to the Electrical Engineering Department at Washington University for their support. Challenges Using Different Methods  Using accelerometer Advantage: most smart phones have the application and no need to do any additional programing on the phone. Disadvantage: the output is the peak force and there is no way of seeing the comparison pressure range in different parts of the foot.  Using versatile Tekscan sensor Advantage: It gives us a perfect picture of foot pressure Disadvantage: High resolution requiring advance equipment and skill Background Goal: To display the maximum pressure in different parts of foot while running and to inform the person if they run on their heels. Approach: 1.Design a circuits to collect data output from sensors 2.Convert the data to pressure 3.Use the data to calculate peak pressure, mean pressure, center of pressure in both recorded and real time. Application : Footwear research for design Compare, screen, and isolate food function Identify pressure range for medical purposes and personal running regulation. HeelForefoot