Illinois State UniversitySchool of Kinesiology and RecreationKNR 352, Quantitative Analysis in BiomechanicsCenter of Pressure ProjectData Collection DescriptorsOne leg stance, 2 conditions: Eyes Open, Eyes ClosedSample Rate: 100 Hz, 16 second durationSubject Mass: 80 kgCPx: in the anteroposterior directionCPy: in the mediolateral directionTwo spreadsheets are provided: Eyes Open, Eyes ClosedReference: Hasan et al, Journal of Biomechanics, 1990 (available on web)The AMTI force platform output 3 orthogonal forces and three moments around the axes of the forceplatform. After processing, output from the ground reaction analysis module of our Vicon-Peak Motus software consists of 10 columns of data: 3 forces (FAP, FML, FV), 3 moments (MML, MAP, MV), 2 center of pressure measures (CofPAP, CofPML), a free vertical moment around the CofP, and the GRFRESULTANT. The CofP is the point of application of the resultant GRF on the top surface of the forceplatform. It is critical when calculating joint torques. It has recently become an important measure clinically to quantifysway/balance.In this project, you will use Excel to create stabilograms (scatter plots of the AP and ML CofPs), and calculate some of the basic measures used to quantify sway (ML and AP ranges, ML-AP area, and CofP velocities).1) When we collect sway measures, our procedure is as follows:a. Set a trigger value on the AD data logger b. Set data collection for 1 second pre-trigger, and 15 seconds post-triggerc. Have subject stand comfortably beside the FPd. Subject steps laterally onto force platform (this will trigger data collection)e. Monitor subject to ensure they are balancedf. Have subject step off force platform2) The raw signals from the force platform are converted to GRF and moments, and the other measures are calculated. 3) Data are exported to an ASCII file for later processing4) The last 10 seconds of the collected data are used in the analysis. This provides the subject with several seconds to become stationary on the force platform.Procedures for each condition1) Open the Excel file2) Remove the first six seconds of the data, leaving only 10 seconds of the trial3) Create a stabilogram of the CP data. To align with the subject standing on the force platform, the vertical axis of the stabilogram should be the CPx and the horizontal axis should be CPy. a. Use the same axis dimensions for both of the stabilograms4) Perform the following calculationsa. Calculate the average weight of the subject over the trial. b. Calculate the range of positions in the X and the Y directionc. Calculate the XY aread. Using the equations provided for the kinematics assignment, calculate the Xvelocity and theYvelocity of the CP.e. Calculate the resultant velocity of the Center of Pressure. Your completed work will consist of 1) The two stabilograms2) A table presenting the values of each of the variables in part 4 from the eyes closed and the eyesopen condition. 3) A description of the similarities/differences in the variables between the two conditions, and an explanation of your