Pitching is one of the most important elements of baseball. Therefore, both professional and amateur players are interested in measuring their pitching performance, particularly their pitch speed. Conventional equipment such as radar speed guns can be used to measure pitch speed; however this approach is unpopular among amateur players because of its cost. Therefore, we proposed a vision-based ...

BACKGROUND Humeral retrotorsion has been investigated in relation to shoulder range of motion (ROM) in healthy baseball players. Currently, there is limited information on the osseous anatomy and development of ulnar collateral ligament (UCL) tears. PURPOSE To determine the relationship between humeral retrotorsion and shoulder ROM in baseball players with a UCL tear. STUDY DESIGN Cross-sec...

Baseball is a popular and very lucrative bat-and-ball sport that uses wooden bat to score runs. We hypothesize new design features for baseball bats will emerge from their shape optimization using parametric modeling genetic algorithms. converge the location of two points on made maple (Acer sp.) ash (Fraxinus wood are associated with increased velocity ball rebounding off bat: vibrational noda...

The purpose of this study was to clarify differences in the kinematic and kinetic profiles of the trunk and lower extremities during baseball pitching in collegiate baseball pitchers, in relation to differences in the pitched ball velocity. The subjects were 30 collegiate baseball pitchers aged 18 to 22 yrs, who were assigned to high- (HG, 37.4 ± 0.8 m·s(-1)) and low-pitched-ball-velocity group...

Baseball is one of the most popular sports in the United States, with estimates of 4.8 million children 5 to 14 years of age participating annually in organized and recreational baseball and softball. Interest in and fascination with the sport have grown since the beginning of the 20th century, but it was not until 1965 that the issue of “Little League elbow” raised concern about the safety of ...