Standing trunk rotations without a medicine ball. To make a standing trunk rotation easier, you don’t have to use a medicine ball at all. In this variation, ...

Young baseball pitchers who do not have proper trunk rotation sequence while pitching may have an elevated risk of shoulder injury due to greater forces and angles placed on the joint, according ...

"I don't know too many amateurs who turn too far off the ball," Shear says. "It's a lot more common to see very little trunk rotation. They're basically all arms when they swing." ...