Abstract: An apparatus for lower back exercise has a support structure, a body support platform and a pendulum pivotably connected to the support structure below the body support platform for engaging the legs of a user. Actuators cause the pendulum to move upwardly or downwardly to either assist the movement of the legs of a user engaging the pendulum, or to resist motions of the pendulum initiated by the user. The body support platform may be tilted by an actuator to provide ease of mounting and dismounting the apparatus. Controls for the actuators are provided to allow a practitioner to monitor and adjust the assistance or resistance provided by the apparatus to the user. The apparatus thus avoids hyperextension of the back while providing strength conditioning with progressive intensity of work outs, especially for users injured or otherwise in poor condition.

Abstract: An apparatus for exercise of the lower back, has a support frame capable of supporting the body of a person exercising. The support frame supports left and right pendulums, for left and right legs, respectively. Each of the left and right pendulums further has an arm that is pivotably connected to the support frame, so that each of the left and right pendulums may pivot about the pivotable connection independently of the other. A resistance transfer apparatus is moveably coupled to the other end of the pendulum arm. The resistance transfer apparatus includes a bar for engaging the lower leg or ankle of a person exercising, and a coupling for moveably coupling the resistance transfer apparatus to the arm of the pendulum, so that the resistance transfer apparatus can pivot in substantially the same plane of movement as that of the pendulum. Use of the exercise apparatus raises the user's legs from the hanging vertical to the horizontal against the resistance of the weighted pendulums.

Abstract: An apparatus for exercise of the lower back, has a support frame capable of supporting the body of a person exercising. The support frame supports left and right pendulums, for left and right legs, respectively. Each of the left and right pendulums further has an arm that is pivotably connected to the support frame, so that each of the left and right pendulums may pivot about the pivotable connection independently of the other. A resistance transfer apparatus is moveably coupled to the other end of the pendulum arm. The resistance transfer apparatus includes a bar for engaging the lower leg or ankle of a person exercising, and a coupling for moveably coupling the resistance transfer apparatus to the arm of the pendulum, so that the resistance transfer apparatus can pivot in substantially the same plane of movement as that of the pendulum. Use of the exercise apparatus raises the user's legs from the hanging vertical to the horizontal against the resistance of the weighted pendulums.

Abstract: An apparatus for lower back exercise comprises a support structure and a body support platform supported by the support structure. A pendulum having three segments is connected to the support structure. The pendulum has a first segment; pivotably connected to the support structure; a second segment that proceeds from the first segment at a first angle; and a third segment that proceeds from the second segment at a second angle, so that the center of mass of the pendulum is offset from the vertical. Weights may be connected to the third segment of the pendulum. There is a means, such as straps, connected to the pendulum, for engaging the legs of a user. The user exerts force with his legs to move the pendulum through a range of motion greater than 90 degrees.

Abstract: An exercise apparatus comprises a frame having a base and an apex. A least one pivot is connected to the frame for supporting a swinging arm. The opposite end of the arm supports a seat for an exercising athlete, and optional weights. The frame supports a force plate opposed to the seat. The seat and the force plate are connected by elastic members, such as bands, that bias the seat toward the force plate. The athlete develops reversal strength by extending his legs to bound from the force plate, then stopping the resulting forward motion at a predetermined joint position before rebounding again.

Abstract: A lower back exercise and apparatus for performing a lower back exercise. The apparatus has a vertical pendulum suspended under the person exercising, who lies prone above the pendulum. The person's legs are retained in a resistance transfer apparatus that pivotably connects to the pendulum. Weights may be added to the pendulum The exercise raises the person's legs from the vertical to the horizontal. The exercise then lowers the legs from the horizontal through and past the vertical rest position, in a total motion substantially greater than 90 degrees, using the same muscle groups to push the legs past the vertical rest position. The body support platform may be adjusted to various angles with respect to the horizontal.

Abstract: A lower back exercise and apparatus for performing a lower back exercise. The apparatus has a vertical pendulum suspended under the person exercising, who lies prone above the pendulum. The person's legs are retained in a resistance transfer apparatus that pivotably connects to the pendulum. Weights may be added to the pendulum The exercise raises the person's legs from the vertical to the horizontal. The exercise then lowers the legs from the horizontal through and past the vertical rest position, in a total motion substantially greater than 90 degrees, using the same muscle groups to push the legs past the vertical rest position. The body support platform may be adjusted to various angles with respect to the horizontal.

Abstract: A lower back exercise and apparatus for correctly performing the exercise. The exercise avoids hyperextension of lower back muscles, tissue and cartilage. The exercise of those areas promotes blood flow to injured muscles and tissue, and encourages healing. The exercise lowers the legs from the horizontal through the vertical rest position, in a total motion substantially greater than 90 degrees, using the same muscle groups to push the legs past the vertical rest position.