A method includes the following steps: processing, by a computing device, at least a stretch value per strap of straps of a motion tracking system; comparing, by the computing device, the stretch value of each strap or a length value derived therefrom with a stored baseline value of the respective strap, the stored value being associated with the same person, and the length value being representative of a length of a respective strap at least based on the respective stretch value. The method further includes executing, by the computing device, a corrective action at least when one of the comparisons made exceeds a predetermined threshold. Also, a motion tracking system, a data processing device, a computer program, and a computer-readable medium are related.

An exercise assembly structured to perform different rowing routines characterized different rowing motions. A resistance device is movable within a chamber and is cooperatively structured therewith to resist such movement. A drive assembly includes two drive sections each independently connected in driving relation to said resistance device. A connector structure includes two connector members each attached to a handle and connected in driving relation to a different one of said drive sections. The handle is selectively movable through the plurality of different rowing motions, at least one of which results in the two drive sections concurrently driving the resistance member and being concurrently driven by the two connector members. At least one other rowing motion of the handle is defined by each drive section alternately driving the resistance member and being alternately driven by interconnected ones of said connector members.

A system and method for a mixed or virtual reality-enhanced stationary exercise bicycle, comprising a stationary bicycle device, a belt-like attachment, and a mechanical arm attachment attached to the base of a stationary bike, used for measuring and determining user position for virtual or mixed reality-enhanced software.

An exercise bike includes a frame, a rotor assembly and a drive assembly mounted on the frame, where the drive assembly is configured to drive rotation of the rotor assembly, and a cover configured to at least partially cover the rotor assembly. The components of the drive assembly and the rotor assembly include structures that improve the performance of the exercise bike, including but not limited to a strong and rigid construction and improvements in belt tracking, user feel, effort consistency, synchronization, and rotor performance.

A switchable intelligent fitness handle is disclosed. A processor (11), a movement posture sensor (12) and a touch sensor (13) are built in the handle (7). The movement posture sensor (12) and the touch sensor (13) are connected to the processor (11). Each handheld fitness equipment has a corresponding sensor, and a pin connector (16, 17, 18, 19) that is matched with the bayonet (15) of the handle and provided with a signal line. Thus, the goal of accomplishing a set of exercises with a plurality of handheld fitness equipments by using one same set of handles can be achieved. An intelligent fitness set containing the fitness handle is further disclosed.

A ball flight analysis system includes a strobe device, such as an infrared strobe device, to illuminate a ball in flight. An imaging device captures a plurality of images of the ball in flight, for example, within a single frame. A processor determines from the plurality of captured ball images one or more flight characteristics of the ball, such as the ball's velocity or ball's angular velocity and axis of rotation.

The invention relates to a method to assist with using a pendula seating device, said device comprising a spherical foot, a seating portion, a body being secured at a first end to said foot and at a second end to the seating portion and a position-measurement sensor being secured to said device. The invention also relates to a remote electronic object carrying out said method by the processing unit thereof, the remote electronic object also comprising output means and means ensuring communication with said seating device. Said electrical object also comprises a memory of programs comprising instructions of a computer program product the execution or interpretation of which by the processing unit causes the implementation of the assistance method.

A locking device for an exercise system may include a locking member having a contact portion and configured to move between a first position and a second position. When in the first position, the contact portion of the locking member is not in contact with the resistance mechanism of the exercise system, thereby allowing movement of the at least one moveable assembly. When in the second position, the contact portion of the locking member is in contact with the resistance mechanism of the exercise system, thereby preventing movement of the at least one moveable assembly. The device may also include an electrical actuating device having an actuator for selectively engaging the locking device and moving the locking device between a first position and a second position.

A sports simulator calculates spin of a sports object using image analysis. A velocity vector is also calculated. These are combined to produce a predicted future trajectory of the sports object. In one embodiment, the sports object is a golf ball and the sports simulator simulates golf.

Some disclosed golf club heads include body having at least one raised sole portion and a cantilevered ledge extending down around a perimeter of the club head below the level of the raised sole portion. Some disclosed golf club heads include one or more sole openings in the body and a sole insert that is mounted inside the body over the sole openings. The sole can include weight tracks as well, and a rear weight track can extend between a toe side sole opening and a heel side sole opening. A crown insert can also be included that is mounted over an upper opening in the body.