To do this experiment you will need two subjects that have different arm lengths. In this experiment Subject 1 had an arm length of .81 meters and Subject 2 had an arm length of .77 meters. It is crucial that the subjects have different arm lengths because if they don’t your results will be invalid. The first step in this experiment is to set up the camera using the tripod and insert an SD card. Next, position the camera perpendicular to the sagittal plane along the x-axis in regards to the subject. Next, record the subjects holding a meter stick in a horizontal and vertical position. This recording will be used to determine how many pixels are in a meter using the distance formula. Follow this by recording both subjects doing a standard softball
