"Case study to examine factors related to elbow pitching disorders in high school baseball clubs"

I investigated the presence or absence of elbow joint pitching disorders in the high school baseball club by questionnaire and medical check. Of the 36 members, 22% of 8 had elbow joint throwing disorders. He often participated in games in the regular class, had many wrist dorsiflexion restrictions, and tended to have experienced catchers when he was in elementary school.

Waseda University Graduate school of sport sciences research paper