Abstract
The declining tendency of children's throwing ability due to the decrease in opportunities to play outdoors in recent years has been recognized as a problem. In light of this situation, instruction on throwing motion was newly added to physical education classes in the 2020 Courses of Study for elementary school students. However, the teaching method is left to the discretion of each teacher, and at present, no effective teaching method has been established to improve children's throwing ability. Under such circumstances, the authors developed a system to quantify the throwing motion using a camera. However, in order to provide immediate feedback to teachers and children on the improvement of throwing motion, it is necessary to clarify the factors of throwing motion that affect the improvement of throwing ability to a distance. Therefore, in this study, we conducted a measurement experiment of softball throwing for elementary school students, analyzed the throwing motion.
