Customizable golf putters are disclosed. The putters include a putter face; a putter head that is configured to be reversibly connected to the putter face (with the putter head being selected from a plurality of different putter head styles); and a hosel that is configured to be reversibly connected to any of a plurality of hosel receiving channels that are accessible on a top surface of the putter head (the hosel is also selected from a plurality of different hosel styles). The golf putters further include a threaded shaft connector that is configured to reversibly connect the hosel to a putter shaft. In addition, the golf putters include one or more peg fillers, which are configured to be inserted into empty hosel receiving channels.

Hand held weight units of light weight manufactured as a solid unit, a shell unit with core insert combinations or modular units with interlocking ends. Shell units with core inserts and modular interlocking units allow for the changing of held weight by inserting or removing inserts or by locking or unlocking of modular weight unit sets creating varying held weight. The weight units are primarily used with upper body exercises during aerobic exercises in the home, outdoors, or in a gym setting such as walking or running to vary the intensity of workout during use.

Fight training equipment includes a training equipment body; a liner fixed inside the training equipment body; at least one telescopic arm fixed in the liner through a first elastic member; a pop-up device or a winding device arranged in the liner, a pop-up channel matched with each arm in a one-to-one correspondence manner being arranged between the liner and the training equipment body so that the arm extends from the liner to the outside of the training equipment body through the pop-up channel under the action of the pop-up device and is withdrawn to the middle part of the liner through the pop-up channel under the action of the first elastic member, or the arm is withdrawn from the outside of the equipment body to the middle part of a liner body through the pop-up channel under the action of the winding device and extends to the outside of the equipment body through the pop-up channel under the action of the first elastic member; an arm control assembly arranged on the training equipment body; and a drive device connected with the pop-up device or the winding device, the arm control assembly being connected with the pop-up device or the winding device through the drive device.

A waterproof audio earphone device with at least one brace with a curved shape, is configured in a necklace-like manner, with an adjustable securing mechanism coupled to a portion of the brace, to tighten the brace about the prospective user's neck. A smartwatch or music device holder (optionally removable) is disposed in the brace near chest level and a waterproof wireless communication module is coupled to the brace and configured to communicate to a prospective smartwatch/music device disposed in the holder. Audio volume control buttons are disposed on the wireless communication module or the brace or along the earphone wire(s). A pair of earphones are coupled via wires to at least one of the wireless communication module(s) and the brace. And water sealing tips disposed interior of the earphones, the tips preserving the audio quality of the earphones when worn in an aquatic or semi-aquatic setting by a prospective user.

A resistance selectable exercise device for performing upper body, leg, and arm exercises includes a pair of posts, each of which has an upper end and a lower end. A rod, which is engaged to and extends between the upper ends, is configured to be grasped in one or both hands of a user. Each of a pair of wheels is engaged to the lower end of a respective post so that the wheel is perpendicular to a plane defined by the pair of posts. The wheels allow locomotion of the posts across a surface. A bracket is engaged to and extends between the posts and is positioned between the upper ends and the lower ends of the posts. Each of a set of weights is selectively engageable to the bracket. The weights provide resistance to the user in moving the rod relative to the user and the surface.

An upper and lower body push and pull exercise machine with a rotatable one directional resistance mechanism and adjustable angle having a movable user support frame having a forward end and a rearward end and the rearward end is pivotable relative to the floor, an angle adjusting mechanism, movable lower body user supports having a foot support platform and a shin support pad operatively connected to the movable user support frame; movable upper body user supports having a gripping handle operatively connected to the movable user support frame, a linkage assembly operatively connected to all of the user supports, a rotatable one direction resistance mechanism operatively connected to the upper and lower body user supports for creating resistance to the exercise motion of the user supports, and a resistance mechanism drive assembly operatively connecting all of the user supports to the rotatable one direction resistance mechanism.

A hex flex apparatus for improving resistance training is presented. The hex flex apparatus is useful for providing more than the standard two-dimension experience, in that a standard apparatus requires large jumps in band size and resistance to move up to the next level. The hex flex apparatus further adds a third dimension by allowing for smaller, more gradual increments to resistance, which leads to more and steadier strength progress before reaching a plateau or sticking point. A platform with two handles is described as is the band which is used to provide tension for resistance training. Further adjustable rods are shown which can be placed into various holes to control the tension and the rods have a ring magnet which provides for the rods being secured in the holes. The bands are further around the rods to access the value of the rods.

System for mechanically assisting rehabilitation of a patient. The system includes: a manipulator having at least five degrees of freedom and defining a free end; a limb support for supporting a limb of the patient, and secured relative to the free end of the manipulator; a force sensor operatively connected to the limb support to allow measuring input forces applied by the patient; and a processor communicatively connected to the force sensor, the manipulator, and a memory store which defines a scale factor. The processor is configured to control operation of the manipulator to move the limb support, and further configured so that responsive to receiving an input force measurement from the force sensor, the processor determines an applied force as a function of the input force and the scale factor.

A method for tracking performance of player including determining global direction of magnetic field at first court and computing first court specific data; providing rotation for rotating apparatus about spin axis via player, wherein rotating apparatus comprising XYZ-magnetic field sensor; measuring plurality of magnetic field values as function of time when rotating apparatus is rotating about spin axis; computing magnetic field component of magnetic field in direction of local body co-ordinate of spin axis of rotating apparatus; determining direction of spin axis using computed magnetic field component of magnetic field and determined global direction of magnetic field; determining player specific data comprising angle of spin axis with respect to horizontal ground plane and angle of shot direction with respect to horizontal component of spin axis; and calibrating and storing first court specific data and player specific data to track performance of player at first court.

A pegboard of the present disclosure includes: a main device including multiple unit modules; a board plate including multiple receiving portions; and multiple pegs to be inserted into the multiple receiving portions, and the multiple unit modules include multiple sensor modules configured to sense whether the multiple pegs are inserted into the multiple receiving portions and multiple light source modules configured to output light to the multiple receiving portions.