Intermediate section for exercise bar
Invalid gravity force rebound exerciser
Isoinertial lifting device
Isokinetic exercise apparatus for the lower body
Isokinetic exercise hoop
Isokinetic oscillating exercise apparatus
Isolated curl machine and method of training therefor
Isolation exercise machine with leverage arm
Isotonic exercise device attachable to chair
Isotonic or isometric exercise and therapy system
Isotonic-isometric device for exercise and physical therapy
Isotonic/isometric exercise and therapy system
Jaw exerciser
Jogging weight with repellent chemical
Jointed bar for an exercise machine
Kettlebell
Kettlebell apparatus
Keyed handgrip assembly
Kick training belt
Knee bending machine