The TrueForm Trainer is a curved manual treadmill with a rubberized slat belt. TrueForm’s treadmill design is suitable for sprinting, running, and walking. The unique curvature of the belt aims to improve your running form. We tested this treadmill extensively. This review of the TrueForm Trainer follows our biomechanics expert’s experience with this machine. Read more for her full thoughts on the effectiveness of the TrueForm Trainer.