Disclosed is an exercise device for mounting in a door frame, including an elongated body having a top surface for attaching to a doorframe, a bottom surface, a left side, and a right side, a T-slot formed length-wise in the bottom surface of the body and opening to the left side and the right side of the body, the T-slot having a first and second undercut portions of the T-slot, a bottom wall of the T-slot connecting the first and second undercut portions, a plurality of holes in the bottom wall of the T-slot and extending to the top surface of the body, an exercise accessory having a connecting member, a cutout in the T-slot on the bottom surface of the body for receiving a head of the connecting member, the cutout sized in relative proportions to allow the head of the connecting member to pass therethrough and the head of the connecting member sized to be received in the T-slot of the body and configured to be slidably retained in the T-slot.

Implementations of a training rig are provided. In some implementations, the training rig comprises a first strip of material having a first loop on a first end of the first strip of material and a plurality of openings positioned along the length of the first strip of material. In some implementations, the first strip of material is used with a tie-down ratchet system to secure the first strip of material between a pair of trees sufficiently high enough so that a user can swing from hanging objects secured to the first strip of material. Hanging objects are attached to the first strip of material using the openings in the first strip of material. In another implementation, a wire having formed along its length loops using the wire are secured between a pair of trees using chains, a turnbuckle, and a carabiner. Hanging objects are attached to the wire using the openings formed by the loops.

Implementations of a training rig are provided. In some implementations, the training rig comprises a first strip of material having a first loop on a first end of the first strip of material and a plurality of openings positioned along the length of the first strip of material. In some implementations, the first strip of material is used with a tie-down ratchet system to secure the first strip of material between a pair of trees sufficiently high enough so that a user can swing from hanging objects secured to the first strip of material. Hanging objects are attached to the first strip of material using the openings in the first strip of material. In another implementation, a wire having formed along its length loops using the wire are secured between a pair of trees using chains, a turnbuckle, and a carabiner. Hanging objects are attached to the wire using the openings formed by the loops.

Disclosed is an exercise device having an elongated body, a slot formed length-wise in the body, the slot having an undercut portion on each side, a plurality of holes in slot for receiving one of a plurality of fasteners, an exercise accessory having a connecting member, and a head of the connecting member, the head sized to be received in the slot of the body and configured to be slidably retained in the slot. The slot can have undercut portions. The undercut portions can have locking features. The head of the connecting member can have complimentary locking features. A tightening member can fix the connecting member in a position in the slot. The elongated body can have a cutout for receiving the head of the connecting member.

A jungle gym joint has a joint main body including joint shafts to which pipes are connected and rotary members. The pipe is connected to one end and a folding portion is formed at the other end of the rotary member, the folding member being formed by a flat plate portion being held in a bifurcate portion together with the joint main body. A cover member including engaging projections on an inner circumferential surface is provided on an outer circumference of the folding portion. The cover member is guided to move back and forth in an axial direction by the engaging projections being brought into engagement with guide grooves. The folding portion is restricted from being folded with the cover member staying in an advanced end position while the restriction of folding thereof can be released with the cover member staying in a withdrawal end position.

A jungle gym joint has a joint main body including joint shafts to which pipes are connected and rotary members. The pipe is connected to one end and a folding portion is formed at the other end of the rotary member, the folding member being formed by a flat plate portion being held in a bifurcate portion together with the joint main body. A cover member including engaging projections on an inner circumferential surface is provided on an outer circumference of the folding portion. The cover member is guided to move back and forth in an axial direction by the engaging projections being brought into engagement with guide grooves. The folding portion is restricted from being folded with the cover member staying in an advanced end position while the restriction of folding thereof can be released with the cover member staying in a withdrawal end position.

A workout system 10 as well as playground systems 12 are disclosed. The system 10 and 12 are particularly advantageous because each system 10 or 12 may be secured to a particular terrain via adjustable support members 14 to permit the systems 10 and 12 to support themselves on the terrain without the need of installing cumbersome construction footings to support the systems 10 and 12 onto the ground. Furthermore, the systems 10 and 12 are adapted to adjust the height of the accessories such as horizontal lift up bars 16, parallel lift up bars 18, or monkey bars 20.

A training device for a board sport involving the use of a board, including at least a first (2c) and a second (3c) main support line of the board (6) extending from at least one upper attachment point (4, 5; 51, 75, 77, 81, 83) located above and at a distance of the board (6) as far as a first (13) and a second (14) support element of the board (6) respectively, each extending transversally under the board (6) and each comprising a bearing part (15, 16) on which the lower face (15) of said board (6) is supported. The device according to the invention is particularly applicable to surf training, the board then being a surf board.

A training device for a board sport involving the use of a board, including at least a first (2c) and a second (3c) main support line of the board (6) extending from at least one upper attachment point (4, 5; 51, 75, 77, 81, 83) located above and at a distance of the board (6) as far as a first (13) and a second (14) support element of the board (6) respectively, each extending transversally under the board (6) and each comprising a bearing part (15, 16) on which the lower face (15) of said board (6) is supported. The device according to the invention is particularly applicable to surf training, the board then being a surf board.

An exercise weight support device includes a retractable belt with an upper end for attachment to a ceiling or other overhanging support structure to enable suspension therefrom of the exercise weight support device, a cradle and/or one or more hooks to enable the weight support device to be used to suspend a free weight from the ceiling or other overhanging support structure, a retracting reel mechanism attached to the lower end of the belt to selectively retract or pay out the belt to selectively enable vertical movement of the free weight to a desired height, and a trigger handle co-located with the retracting reel mechanism and operable to selectively disallow lowering of the free weight when the trigger handle is not continuously operated by a lifter performing a lifting exercise.