York adjustable sit up board uses a simple approach to abdominal development by allowing the user to vary the angle at which they train ranging from 20 degree decline up to 45 degree decline to target the abdominal region fully you need to include variation when training this can be either by using weights different planes of movement or with incline the york fts range has been introduced to the fitness market for training studios and gyms where the best light commercial equipment is a mus