A harness belt system for assisting in the performance of exercises includes at least one belt member, an adjustable belt clip on at least one of two opposing ends of the belt member, and a substantially V-shaped tether having at least a top portion coupled to the belt member and a bottom end. In some embodiments, the top end of the substantially V-shaped tether couples to the belt member and forms at least an angle with the belt member ranging from 91 degrees to 158 degrees. In some embodiments, the system is configured when in use to have the bottom end of the tether tethered to a stationary object and to have the belt member in a closed position for placement of the adjustable belt clip and belt on bent legs over a front of a user's thigh or behind the user's thigh or on a user's calves.

An exercise machine rail system for improved exerciser mounting and dismounting, improved functional ergonomics, and reduced risk of exerciser injury when using an exercise machine. The exercise machine rail system generally includes either two rails in close relationship which are linked together via connectors or a singular rail. Bias members are disclosed as either extending along either outer side of the rails, internally to the rail, or underneath the rail. Due to the narrow nature of the rails used by the present invention, an exerciser is able to mount and dismount the exercise machine easily and efficiently.

The invention is embodied in an exercise system that can allow its user to counterbalance the effects associated with a predominantly sedentary lifestyle though a fitness device that comprises a combination of (a) supporting the lower body in a manner that permits a user's upper body to act as a third class lever with the user's hips operating as fulcrum and (b) engaging in resistance exercises with the upper body in a horizontal position, unsupported above the greater trochanter.

An eccentric column structure of a waist twisting exercise machine is provided which includes a base, a cushion, and an eccentric column assembled between the base and the cushion. The cushion is supported above the base through the eccentric column, so that the seat height of the cushion is slightly higher than the height of knees of an average adult, thereby enabling riding in a relatively comfortable and ergonomic posture, and enabling exercising movements of rotating and waist twisting by using two feet landing on the ground as points of force application. In addition, the eccentric column is integrally formed by a bending processing of a metal pipe column, which not only avoids the formation of seams during assembly or structural weaknesses derived from welding, but also greatly enhances the overall strength of the structure, thereby being conducive to prolonging the service life and safety of the exercise machine.

An eccentric column structure of a waist twisting exercise machine is provided which includes a base, a cushion, and an eccentric column assembled between the base and the cushion. The cushion is supported above the base through the eccentric column, so that the seat height of the cushion is slightly higher than the height of knees of an average adult, thereby enabling riding in a relatively comfortable and ergonomic posture, and enabling exercising movements of rotating and waist twisting by using two feet landing on the ground as points of force application. In addition, the eccentric column is integrally formed by a bending processing of a metal pipe column, which not only avoids the formation of seams during assembly or structural weaknesses derived from welding, but also greatly enhances the overall strength of the structure, thereby being conducive to prolonging the service life and safety of the exercise machine.

A leg tuck exercise training and resistance device that can be mounted to stabilized objects to allow a user to improve muscle strength and coordination over time when performing a leg tuck exercise is disclosed.

Apparatus for back improvement and lower-back pain and knees relieving, the apparatus including, for each foot of a user, a pedal shiftable along a linear axis, for allowing a foot of the user to exert force on the pedal, a sensor, for continuously sensing a force exerted on the pedal by the foot, a linear actuator having a longitudinal bore in a piston thereof, the linear actuator being configured to move the piston away from the pedal when the force on the pedal exceeds a first threshold, and a controller for reading a sensing of the sensor, the controller being adapted to instruct the mechanism to move the piston away from the pedal such that the pedal retracts in response to pressure exerted by the foot.

Disclosed herein is a resistance exercise device and methods of using the same. In one embodiment, a resistance exercise device is disclosed comprising a quarter-wheel, a means for attaching resistance to said quarter-wheel, a support means attached to the axis of the quarter-wheel, whereby a user can perform core exercise while moving in a direction parallel to the line of resistance.

An exercise apparatus for strengthening muscles. The exercise apparatus includes a body having a holding portion that extends between a first distal region and second distal region thereof. The holding portion forms a continuous surface that is curved such that a diameter of the holding portion is narrowest at a proximal point of the holding portion and widest at a first radial edge and an opposing second radial edge. The first and second distal regions are each dome shaped and extend from the first radial edge and the second radial edge, respectively. The holding portion can be received between the inner thighs of a user to add resistance when performing various exercises, such as leg lifts, planks, pull-ups, dips, and the like. In some embodiments, the body includes a weight receiving channel extending therethrough, wherein an elongated weight is positioned within the weight receiving channel.

An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; one or more wheels; and an energy storage device applying resistive and restoring force to the wheel. Optionally, a shaft can be present that rotationally locks two or more of the wheels.