A fitness slider is provided that is capable of holding a weight plate during use, to be manipulated by one or more extremities using the weight plate as the engagement surface for the user's hand or foot. Another fitness slider is configured to mate with different sizes of weight plates. Yet another fitness slider is provided that includes a handle on top of the weight plate as the engagement surface.

Disclosed herein is a stair climber that includes a frame having a base, an upper axle and a lower axle, and steps revolvably coupled to the upper axle and the lower axle. The stair climber also includes an electric brake mechanism operating in generative mode and coupled with the steps and configured to provide a variable resistive force. Also included is a controller that receives an indication of a selected exercise mode from a user that includes a first speed, a second speed, and a difficulty level. The controller also balances a load, in a learning mode, on the steps based a user's weight at the first speed, and controls, in response to the user applying an additional load to the steps via a rail system, the electric brake mechanism to apply the difficulty level of the selected exercise mode and prevent the steps from exceeding the second speed.

A flexible weight sled includes a main body member made from a flexible material, such as a nylon webbing, canvas, or the like. The main body member includes a weight strap that is used to attach one or more weights to the main body member in a removable manner. A upper body pulling strap is attached to the front portion of the main body member, and in a preferred embodiment, the upper body pulling strap includes a pair of handles on a distal end thereof. The weight sled may be folded or rolled up for purposes of storage and/or transport.

A muscle-building apparatus for building the muscles of a user performing a physical exercise, comprising a frame on which are assembled a treadmill which is displaceable in a longitudinal direction and in opposite senses, a force generator that supplies an adjustable pushing or dragging force, and a swivelling support mechanically coupled to the force generator for the user to perform a pushing or dragging exercise on the swivelling support.

A resistance force is controlled such that a user's effort against the resistance force results in a first isokinetic seed movement. The resistance force required to effect the first isokinetic seed movement is associated with a force-velocity profile. It is determined whether a sufficient number of isokinetic seed movements have been performed by the user. In response to a determination that the sufficient number of isokinetic seed movements have been performed by the user, a strength determination of the user is made based on the isokinetic seed movements performed by the user.

A tire exercise system has a tire having an interior portion covered with an inner tire cover. At least four shoulder strap attachment points are attached to the tire and configured to secure a right and left shoulder strap. At least two handles are attached to the tire and configured to accommodate human hands. At least two anchors are attached to the tire and configured to accommodate a rope system. A waist harness includes a waist belt. An anchor is attached to the waist belt. A rope system is attached to the tire and the waist harness. The rope system includes a first carabiner attached to a bungee cord, which can then be attached to the tire. A ring is attached to the bungee cord. A rope is attached to the ring. A second carabiner is attached to the rope, which can then be attached to the waist harness.

A sand training bag for sand and/or mineral training in an open and closed configuration. The sand pit training bags includes a sand pit training bag configuration comprising at least one fastener and at least one overlaying fabric around the perimeter to open flat on a surface. The sand training bag includes attachable wall structure, wherein the surface attachable wall structure is configured with a sand pit training bag in an open configuration visible relative to a sand or mineral pit held by one or more fasteners. The sand training bag includes a single sand pit training bag, wherein the single sand pit training bag is convertible to a single sand pit with at least one attachable perimeter wall around the perimeter of the open sand or mineral receiving surface configuration, wherein a top cover is configured to be viewed as a sand or mineral pit closed configuration.

An exercise machine support system for providing increased versatility including inclination or declination of an exercise surface, a reduction in the overall length and width of the exercise machine, and an enhanced user interface which reduces the risk of injury. The exercise machine support system generally includes a cantilevered exercise machine which is adapted to have a variable angle of incline or decline with respect to a horizontal ground surface. The exercise machine will generally include a base and a support which extends between the base and the exercise machine. The upper end of the support is connected to the exercise machine by a first pivot such that the exercise machine pivots about the support. An adjustment device may be utilized to pivot the exercise machine and thus adjust its angle of incline. Various types of adjustment devices are disclosed, including an actuator, ratchet-and-pawl, gears, and cam.

An aspect of the invention provides an annular exercise apparatus comprising an annular body having axially spaced annular faces and inner and outer side walls, the body section having a core and a flexible cover layer and defining an aperture inward of the inner side wall and extending axially through the end faces, wherein the aperture defines an annular lip having a diameter greater than a diameter of the aperture and less than a diameter of the inner side wall.

A fitness activity apparatus has a frame having four vertical posts, the vertical posts comprising a left rear post, a right rear post, a left front post, and a right front post, the left rear post and right rear post being connected by a rear lateral bar, the left front post and right front post being connected by a front lateral bar, the left rear post and left front post being connected by a left side bar, the right rear post and right front post being connected by a right side bar, the left side bar and right side bar being at a common level to provide a support platform configured to support a circular weight plate having a selected plate diameter, and the rear lateral bar positioned at a first vertical level and front lateral bar being positioned at a different second vertical level.