An operation information providing apparatus that provides information regarding a repetitive operation which is synchronously performed by a first user and a second user, includes a processor that detects a deviation of a timing of an operation of the second user based on a timing of an operation of the first user by using an output of a first sensor detecting the operation of the first user and an output of a second sensor detecting the operation of the second user, and an output unit that outputs information indicating the positive or negative of the deviation of a case where the deviation is detected.

An operation information providing apparatus that provides information regarding a repetitive operation which is synchronously performed by a first user and a second user, includes a processor that detects a deviation of a timing of an operation of the second user based on a timing of an operation of the first user by using an output of a first sensor detecting the operation of the first user and an output of a second sensor detecting the operation of the second user, and an output unit that outputs information indicating the positive or negative of the deviation of a case where the deviation is detected.

An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A rowing exercise device comprises a support structure; a movable user support movably associated with the support structure for movement relative to the support structure; a movable foot support movably associated with the support structure for movement relative to the support structure; a handle; and a rowing assembly operatively associated with the handle and at least the movable foot support to cause at least the movable foot support to move relative to the support structure with movement of the handle so that both a user s body and one or both feet move relative to the support structure with movement of the handle.

A training or exercise apparatus may have a base and an adjacent movable armature or frame that carries a riding member, or shuttle, or carrier. The carrier has an engagement interface with an element of sporting or exercise equipment. The sporting or exercise equipment is engaged by the user, typically by being grasped. The apparatus defines a physical or virtual schedule describing an arc for a swing in the particular activity. The apparatus may include a manual or electronic means of imposing resistance to the motion. This resistance may be adjustable, and may be programmable as a function of one or both of position and speed. The apparatus may include an array of sensors such as may be used to determine the pre-existing stroke, and such as may be monitored during training to assess progress. The apparatus may be operated passively, or it may be operated interactively in a manner in which real-time feedback causes the apparatus to adjust resistance to the motion.

A rowing machine includes a frame where the frame includes a first support, a second support, and a beam extending between the first support and the second support. A track is defined by at least a portion of the beam, and a sliding member is movably disposed on the track. A hinge joint is disposed in the beam between the first support and the second support defining a first section of the beam and a second section of the beam.

A rowing machine includes a frame where the frame includes a first support, a second support, and a beam extending between the first support and the second support. A track is defined by at least a portion of the beam, and a sliding member is movably disposed on the track. A hinge joint is disposed in the beam between the first support and the second support defining a first section of the beam and a second section of the beam.

An Internet of Thing (IoT) device includes a sensor coupled to a processor; and a transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A support shirt including a shirt body and a pair of shirt body sleeves positioned adjacent to an upper shirt body is provided. The sleeves are attached to the shirt body at sleeve body holes, with each of the sleeves including sleeve reinforcement regions extending at least a portion of the distance from the sleeve holes to an outer edge of the sleeves. The sleeve reinforcement regions extend substantially along a centerline extending longitudinally across the sleeves and the upper sleeve body to stabilize and provide support to the shoulders of a wearer during an upward lifting motion.