A training device for the human or animal body includes a balance body with a movable centre of mass and a holder with which the balance body can be carried. The holder includes a harness with connectors for connecting to a torso of the body and with a cavity in which the balance body is at least partially received and fixed. The harness particularly includes a first part with connector for attaching to a back of the user and a second part connected releasably to the first part. The first part and the second part adjoin each other so as to form a cavity which is open on both sides and in which the balance part is at least partially received in substantially fitting manner.

A low friction rehabilitation board having an integral band retaining feature is described. The rehabilitation board may have a coefficient of static friction of no more than about 0.5 and in some embodiments no more than about 0.06. The rehabilitation board has a plurality of band retaining feature configured along one or both ends and may be an integral band retaining features being formed in the board. Additionally, the rehabilitation may include one or more band retaining features on one or both sides of the board. The unique configuration of the band retaining features enables rehabilitation method heretofore not possible with a single board. Resistance bands may be retained in the band retaining features and coupled to a user's limb, such as a foot or ankle, to resist motion, such as sliding or extending the foot along the low friction surface of the rehabilitation board.

An exercise rod for supporting an exercise elastic rope includes a supporting member rotatably sleeved on the exercise rod. The periphery of the supporting member is provided with an annular positioning groove for cooperating with a hook. An end of the exercise rod is detachably provided with a blocking member configured to prevent the supporting member from separation, a retractable blocking button is arranged adjacent to the end of the exercise rod, and the supporting member is limited between the blocking button and the blocking member. The supporting member is rotatably sleeved on the exercise rod, and the supporting member is provided with a positioning groove matched with the hook. When the hook is subjected to force, the relative movement between the hook and the supporting member is transformed into the rotation of the supporting member, thereby eliminating the sound caused by friction and collision between parts.

Provided is an exercise device including a planar support surface and a rolling joint which is configured to enable a 360° range of motion for the exercise device. In this regard, the user may roll the exercise device along a planar surface in a forward-and-backward motion, a side-to-side motion, or in an arcuate or circular motion.

An exercise device having a first handle, a second handle, and a cylindrical chamber. The cylindrical chamber is oriented in that the first handle is attached at one end of the cylindrical chamber and the second handle is attached at the other end of the cylindrical chamber. The cylindrical chamber contains a system that facilitates magnetic, tension resistance. Bisecting the surface of the cylindrical chamber, is a knob connected to a fixed component that adjusts the magnetic, tension resistance within the cylindrical chamber.

An aquatic exercise device is disclosed, able to exert omnidirectional uniform water resistance while exercising, so that equal force is required to move it in any direction. The water resistance of the device according to the invention can be adjusted in a quick and measured way. This device can be operated with one hand and can be brought close to the body of exerciser.

A portable exercise apparatus in the shape of a square having a handle at either side, which handles are arranged rotatable on spindles such that the user can impart movement on said apparatus without changing his/her grip.

An adjustable kettlebell device comprising a solid right circular frustum as a base, a post, a sleeve, one or more weight plates, one or more quick release clamps, and a removable handle. The post has an outer diameter compatible with standard weights, and a sleeve that slides over the post has an outer diameter compatible with Olympic weights. The handle is configured to facilitate an addition/removal of the weight plates, and may be swapped with different sized handles for use with different sized hands.

Systems and methods for evaluating the performance of an athlete using a strain gauge is described. In some embodiments, the measurement system comprises a strain gauge and a central processing device. The strain gauge can include a power source, an inertial measurement unit (“IMU”) comprising a load cell, a microcontroller, and a wireless communication module. The strain gauge can be configured to output strain data at a rate of at least 1 kHz and the central processing device can be configured to receive the strain data transmitted from the wireless communication module.

A motion assistance apparatus including a first support configured to support a waist of a user, a side frame connected to the first support and configured to cover at least a portion of a side of the waist, and a joint assembly connected to the side frame such that a location of the joint assembly is adjustable in a longitudinal direction of the side frame, and configured to be located at a part of a hip joint of the user is disclosed.