A guide to stretching and training to understand joint movement and improve performance. It's relatively new. There are many books on the subject, but this one has been very helpful for my son's baseball training. - Title: Range of Motion Stretching & Training Encyclopedia - Description: Stretching and training methods for understanding joint movement - Supervised by: Rie Nakamura - Publisher: Seitosha - Price: 1600 yen Thank you for looking.