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. In one embodiment, the number of sand training bags with at least one attachable perimeter removably attached to another sand training bag is unlimited.

A training device, including a frame having an interior opening and a support, a piece of conditioning equipment supported on the frame by the support, a resistance harness coupled to the frame, the resistance harness has a portion attachable to a user, and a cardiovascular exercise machine within the interior opening of the frame.

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 measurement system for evaluating athletes using a weighted resistance towing sled to which an athlete is connected using a harness and tether, is described, the measurement device comprising: a force sensing device located in the connection between the athlete and the sled, the force sensing device having a load cell, the force sensing device measuring the force exerted on the sled by the athlete; a second sensing device, the second sensing device having at least one accelerometer; and a communication device for communicating data from the sensing devices, wherein the second sensing device provides data for the calculation of at least linear velocity, linear acceleration and linear distance travelled.

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.

A resistance force is controlled such that a user's effort against the resistance force results in a first isokinetic seed movement, wherein the user is an exercise machine user using an exercise machine. The resistance force required to effect the first isokinetic seed movement is associated with a predetermined force-velocity profile. A strength determination of the user is made based at least in part on the required resistance force and the associated predetermined force-velocity profile.

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.

A workout apparatus 10 includes base 12. A lifting arm 14 is pivotally connected to base 12 and movable on base 12 between a raised position and a lowered position, the lifting arm 14 including a first end 14a pivotally connected to base 12 and a second end 14b opposite the first end, the second end 14b including a gripping end piece 16. At least one weight post 32 extends outward from lifting arm 14 at a location between first end 14a and second end 14b of lifting arm 14. A braking system 18 is mounted to base 12 and coupled to lifting arm 14. Braking system 18 allows lifting arm 14 to move toward the raised position freely. Braking system 18 is engaged as lifting arm 14 moves towards the lowered position to lower lifting arm 14 toward the lowered position at a controlled rate of speed.

A resistance force is controlled such that a user's effort against the resistance force results in a first isokinetic seed movement, wherein the user is an exercise machine user using an exercise machine. The resistance force required to effect the first isokinetic seed movement is associated with a predetermined force-velocity profile. A strength determination of the user is made based at least in part on the required resistance force and the associated predetermined force-velocity profile.

The present invention relates to an exercise apparatus. The exercise apparatus includes a platform which has an endless belt revolved around it. The endless belt defines an exercising space. A left strap extends from a left front portion to a left rear portion of the exercising space, and a right strap extends from a right front portion to a right rear portion of the exercising space. The left strap and the right strap respectively have a first connecting part and a second connecting part which could be connected or detached with each other. When the two connecting parts are connected with each other, the left strap and the right strap form a retaining portion for resisting forward movement of a user. When the two connecting parts are detached, the left strap and the right strap could be positioned on a left side and a right side of the exercising space.