HUANG, YU SHUO
National Yilan Senior High School
Email：s810137@gapp.ylsh.ilc.edu.tw
LIN,JUN HAO
National Yilan Senior High School
Email：harrymostmart@gmail.com
CHOU, CHEN CHANG
National Yilan Senior High School
Email：s810296@gapp.ylsh.ilc.edu.tw
Abstract
In recent years, professional baseball pitchers’ arm overload has caused incidents that require rest or even surgery to be heard from time to time. Therefore, we want to use sensors to collect the difference in pressure on the arm when pitching on different courses, and hope to let the pitchers know. The value of the pressure when you throw this kind of ball, so as to plan your throwing volume to avoid sports injuries. The sensor we used in the experiment is MOTUS. This sensor can detect the shoulder of the pitcher when he throws the ball. Rotation angle, shoulder rotation speed, arm pressure and horizontal angle with the ground. We cooperated with our school’s baseball team to collect data. We collected a total of 3 pitchers with 30 balls each, four stitch fastballs, and 2 types of changes that they are good at. 15 ball paths, totaling 60 balls per person, totaling 180 balls data. After the data is graphed and analyzed, our experimental results show that the pressure of throwing a variable ball is basically slightly higher than that of a four-stitch fast ball, so if it is Long-term use of the change ball will cause a greater burden on the arm. If there is an opportunity in the future, more player data will be collected to avoid experimental errors.
Keywords :Sports injuries, sensors, baseball