An article of apparel including an integrated fabric system, with or without strategically-placed weighting and/or elastic resistant materials, which optimizes conditioning, strengthening, endurance, enhancement, training, performance, functional longevity, benefits of daily activity, movement therapy, and/or other diverse medical and/or therapeutic uses, and, all while reducing the possibility of injury. The article enables the user to receive medical and/or therapeutic benefits and to increase production of kinetic energy, through weighted and/or elastic resistance, as required by the user's particularized needs. The user may benefit from the medical/therapeutic properties during periods of activity or inactivity. Benefits are achieved through the integration of fabrics and strategically-placed weighting and/or elastic resistance materials into the article based upon the kinetic energy created, necessitated, and/or dissipated by a specific movement(s) and/or medical or therapeutic requirements.

An exercise board includes a main body and an elastic body configured on an upper surface of the main body. The upper surface of the main body is provided with at least one cavity, the cavity at least includes a first cavity part and a second cavity part, the first cavity part is located above the second cavity part, and a diameter of the first cavity part is less than that of the second cavity part. A lower surface of the elastic body is provided with at least one protrusion connected to the cavity, the protrusion at least includes a first protrusion part and a second protrusion part, the first protrusion part is located above the second protrusion part, and shapes of the first protrusion part and the second protrusion part match with shapes of the first cavity part and second cavity part.

Training equipment includes a hollow shaft having a sidewall defining an internal cavity and at least one polymer material filling at least a portion of the internal cavity. The polymer material may fill the entire internal cavity of the hollow shaft. The polymer material may be a visco-elastic polymer material or polyurethane. A spacer or a filler may fill at least a portion of the internal cavity. A method of making weighted training equipment with a hollow shaft having a sidewall defining an internal cavity may include injecting a curable composition into at least a portion of the internal cavity. The method may further include curing the curable composition into a polymer material.

A fitness bar housing free-moving weights. The movement and speed of the weights can be controlled by a flow impeder. Other embodiments are described.

A weight lifting apparatus including a generally rectangular beam and two handles arranged near its ends. Each apparatus is designed to provide a more equal distribution of heavier weight across the length of the apparatus. Apparatuses may be connected to one another through locking mechanisms. A weight lifting system includes a series of weight lifting apparatuses of varying lengths and weights and is designed to gradually increase a minimum-to-maximum amount of weight. The series of apparatus gives the user a compact, functional weight increment (a gradual increase in weight for muscular strengthening), with comfortable management during the increase in weight, which is useful for a range of bodyweight motions; standing, sitting, bending, and/or on the ground. The weight lifting system also includes a base with handles and a series of additional beams that can be secured to the base to add incremental weights.

A dumbbell has a grip rod and multiple counterweight blocks. The grip rod has two connection segments each having multiple baffles to define multiple connection recesses between the baffles. The counterweight blocks are engaged respectively with the connection recesses. Each counterweight block has a body and a buckle. The body has an engaging channel extending from a center to an edge of the body and being expandable. The engaging channel has an opening and two protrusions to form an engaging space for being mounted around one of the connection segments. The buckle has a first end and a second end. The first end is connected pivotally to the body and at a position on one of two sides of the engaging channel. The second end is connected detachably with the body at a position on the other one of the two sides of the engaging channel.

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.

The invention discloses a method of making a weight-type exercise device, comprising the steps of: (1) prefabricating an outer shell half and an inner shell half; (2) forming a slurry inlet port in the outer shell half; (3) mating and sealing the outer shell half with the inner shell half to form a unitary weight shell; (4) pouring a mixed slurry into the unitary weight shell through the slurry inlet port; (5) subjecting the unitary weight shell to a shaking treatment; (6) sealing up the slurry inlet port with a steel plate; and (7) finishing the surface of the unitary weight shell by painting and baking. Compared with traditional one-piece cast iron counterparts, much lower cost can be achieved with a simpler process.

A planking exercise belt assists the user in performing a planking exercise regimen by alerting the user when a proper plank position is not maintained during performance of the regimen. The planking exercise belt includes a belt that is adjustably secured about the user's lower torso and waist. An adjustable strap interconnects the belt and a weight. A connector is provided on the belt to removably attach the strap to the belt. When a user droops or does not engage their core muscle groups, a tension in the strap is relieved to alert the user to the poor form in performing the exercise. When the user elevates their buttocks, the weight elevates from the ground to alert the user of this improper form.

A weighted bag having an outer shell and a handle assembly. The outer shell has a plurality of panels and at least one of one of a pair of slots and a first end loop assembly and a second end loop assembly spaced apart from the first end loop assembly coupled to the plurality of panels. The handle assembly has a handle grasping member and a strapping assembly, the strapping assembly extending from the handle grasping member and interfacing with at least one of the pair of slots and the first and second end loop assemblies so as to couple the handle assembly to the outer shell.