A stabilizing ability, so-called stability, according to a change in body motion of a wearer is to be appropriately evaluated to achieve effective training, coaching, and fitting of athletic equipment.

Provided are a plurality of body motion sensors 40 that is attached to a wearer 1 or an arbitrary part of a barbell 1a to be used by the wearer 1 and is capable of detecting three-dimensional displacement or rotation of each part, a memory that records a detection result by the plurality of body motion sensors 40 as body motion data and stores index data holding a correlation between an amount of deviation from a stable reference value for evaluating reproducibility of body motion and an index for evaluating a stabilizing ability, an index calculation unit 117g that refers to the index data based on a reference value or a threshold acquired from the recorded body motion data and calculates the index for evaluating the stabilizing ability, and an output device that displays or outputs the index calculated by the index calculation unit 117g.

The present disclosure discloses a calibration method for output force of strength-type intelligent fitness equipment, which belongs to the field of intelligent fitness, including: connecting a tension detection device to the strength-type intelligent fitness equipment; obtaining an actual tension of the strength-type intelligent fitness equipment by turning on the tension detection device to perform detection; obtaining a tension deviation based on a target tension of the strength-type intelligent fitness equipment and the actual tension; and calibrating the strength-type intelligent fitness equipment based on the tension deviation.

The disclosure discloses a compensation method for output force of a strength-type intelligent fitness equipment, which relates to the field of intelligent fitness. The method comprises: obtaining the actual output force of the strength-type intelligent fitness equipment; obtaining the friction force of strength-type intelligent fitness equipment; compensating the output force of the strength-type intelligent fitness equipment based on the actual output force and the friction force.

A tennis ball retriever for retrieving a tennis ball on and about a tennis court and for controllably releasing the ball includes a front-end ball collector having two spaced-apart blades defining a ball collection space. The retriever includes a means for gripping and securing a ball positioned at the fore end, and one or more detents for retaining the collected ball in the collection space until a programmed or manually-directed release toward a target location such as a tennis baseline. The retriever includes a processor-controller for controlling and directing the retriever during a retrieval session. The retriever may be remote-controlled such as by voice commands.

A stabilizing ability, so-called stability, according to a change in body motion of a wearer is to be appropriately evaluated to achieve effective training, coaching, and fitting of athletic equipment. Provided are a plurality of body motion sensors 40 that is attached to a wearer 1 or an arbitrary part of a barbell 1a to be used by the wearer 1 and is capable of detecting three-dimensional displacement or rotation of each part, a memory that records a detection result by the plurality of body motion sensors 40 as body motion data and stores index data holding a correlation between an amount of deviation from a stable reference value for evaluating reproducibility of body motion and an index for evaluating a stabilizing ability, an index calculation unit 117g that refers to the index data based on a reference value or a threshold acquired from the recorded body motion data and calculates the index for evaluating the stabilizing ability, and an output device that displays or outputs the index calculated by the index calculation unit 117g.

An athlete wearing footwear measures jump heights with a motion sensor mounted on the footwear over toes of the athlete. By sensing vertical jump start motions the sensor detects jump start and finish times of −4 g start and −4 g landing. The sensor, a body wearable mems sensor developed by JAWKU, L.L.C., has a previously installed generic factory scale calibration factor. The athlete replaces this calibration factor with a new calibration scale factor selecting an “absolute” external reference device which measures jump height. This device measures several jump heights then inputted to an algorithm app in the sensor to calculate the new calibration scale factor customized to the actual athlete. The motion sensor has built in programming apps to periodically receive an upgraded factory scale calibration factor which upgrade is based on an ever increasing data pool of jump heights. The updated factory calibration factor is then again replaced by the athlete personally taking several new measured jumps which jump heights are in turn inputted to the sensor. The progress made in evolving jumping skills based on training and specific conditioning exercises can thus be motion sensor evaluated.

A system (100) for training a subject such that the subject includes an input unit (102) having a number of sensors (112) that are configured to detect a number of physiological parameters of a user. A processing unit (104) is configured to receive the number of physiological parameters for comparing the number of physiological parameters with a set of predefined physiological parameters to generate a baseline signal (116A). An output unit (106) is configured to generate an instruction signal (118A) upon receipt of the baseline signal (116A) and a regulating unit (108) that is configured to regulate a speed of a game associated with a gamification engine (110) and a speed of an exercising apparatus (200) upon receipt of the instruction signal (118A).

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.

Proposed is a swing analysis device which includes a measurement unit which is coupled to a golf club of a user, and is configured to continuously measure motion data during swing motions of the golf club, an analysis unit configured to analyze the motion data continuously measured by the measurement unit to generate a swing analysis value, and a communication unit configured to transmit the swing analysis value generated by the analysis unit to a user terminal. According to the swing analysis device, as a swing analysis value generated based on motion data of the golf club is transmitted to a user terminal, the swing analysis value can be directly output by an application program installed in the user terminal without analyzing the motion data thus to greatly improve the reaction speed of the application program.

Provided is a weight exercise apparatus. The weight exercise apparatus includes an exercise main body in which movement is generated according to a user's weight exercise, a sensor module configured to detect movement of the exercise main body, and a processor configured to control a user interface (UI) unit to display a UI element indicating an exercise state of a user corresponding to the detected movement on a UI screen wherein the sensor module includes a first laser sensor configured to irradiate a first laser beam toward the weight plate or a component moving together with the weight plate to detect a moving distance of the weight plate when the weight plate moves and a second laser sensor configured to irradiate a second laser beam toward a component that does not move in spite of movement of the weight plate when the weight plate moves.