Abstract: An improved anti-fatigue mat is provided. The anti-fatigue mat includes a base member constructed from an elastomeric material configured to receive a foot or shoe of a user. A disk configured to rotate is provided, the disk having a disk top surface, wherein the disk top surface is flush or approximately flush with at least a portion of the base top surface. A substantial portion of the disk is embedded into the base member. The rotating disk is configured to rotate 360 degrees in both a clockwise and a counterclockwise direction enabling a user to rotate the disk in either direction via leg movements. A plurality of raised elements protruding from the top surface of the base member may be optionally provided.

Abstract: The present disclosure relates generally to a method for providing motion biofeedback to a user while the user performs an activity, where the biofeedback can occur in real time or after discrete points in time (e.g., after a drive phase or maximum velocity phase). The method includes determining an activity type performed by the user; determining a target value for one or more motion characteristics associated with the activity, wherein the target value is determined by historical collected motion data; receiving motion data related to the activity as the user performs the activity; comparing the motion data to the target value; and transmitting feedback to a feedback device based on the comparison to the target value, wherein the feedback corresponds to a motion adjustment proportional to a deviation of the motion data relative to the target value.

Abstract: A virtual or augmented reality based tracking system for assessment of postural sway is provided. In various embodiments, positional data are collected from a user from a headset and/or one or more hand sensors. The positional data is processed to determine the center of mass of the user. In determining of the center of mass, positional data may be given a higher or lower weight compared to other positional data. A virtual reality environment is presented to the user through the headset and may be altered to simulate unbalancing of the user. The raw position data and center of mass are sent to a remote server. A report of user sway is generated from the center of mass. Nausea reduction may be implemented by narrowing a field of vision of the user.

Abstract: An exercise device including a base plate having a generally circular wall extending upwardly therefrom to define a base body having an interior cavity. Spaced apart roller assemblies are disposed within an interior of the base body. A generally convex dome of a motion platform assembly is at least partially disposable within the base body so as to contact the roller assemblies. The motion platform assembly slides, tilts or rotates as force is applied to an upper support platform. A lip of the motion platform assembly may contact a rim of the wall to limit a range of motion of the motion platform assembly. One or more elastic cords extending between the base body and the motion platform assembly provide resistance to motion of the platform assembly.

Abstract: An exercise device that allows users to exercise in a manner that strengthens their core and improve their balance with respect to rotation. The device includes a base for placing on the ground and a board on which the user stands, and includes a pivot between the base and board. The exercise device has a neutral position and also provides a restoring force when the user rotates the board. The restoring force is determined by the shape of the pivot and the supporting elements on the board and/or base.

Abstract: Systems and methods are described for providing coaching, training, or equipment specification information to individual golfers based on data generated during their individual golf swings. Additionally, data hubs are described that provide information and services to individuals based on data collected for a community of multiple golfers. Such community data hub systems and methods may provide one or more of the following: (a) storage of scoring data, swing data, ball flight data, and/or equipment data for multiple golfers; (b) at least some level of individual access to the stored data for the community; and/or (c) electronic interaction between golfers within the community.

Abstract: A body motion analysis system is provided. The body motion analysis system includes a pressure sensing plate, a data transmission device, and a data processing device. Two of the user's body parts exert pressure on the pressure sensing plate and the pressure sensing plate senses the pressure to output pressure distribution data. The pressure sensing plate transmits pressure-distribution stream data to the data processing device according to the pressure distribution data. The data processing device processes the pressure-distribution stream data to obtain sports performance of the user.

Abstract: A golf aid including a practice mode for use while hitting a plurality of golf balls with a golf club includes a golf ball tracking system, a heads up display, and a processor. The golf ball tracking system tracks a plurality of golf ball trajectories, each corresponding to a respective golf ball being hit by the golf club. The heads up display is configured to be worn on the user's head and display an image within a field of view of the user. The processor is configured to compute one or more shot statistics for each one of the plurality of trajectories, display the one or more computed shot statistics and a plurality of trajectory traces within the field of view of the user.

Abstract: A motion analysis device includes two posture angle sensors attached to a measurement object at locations distant from each other, a data acquisition section, a posture angle correction section, and a deformation amount calculation section. The data acquisition section acquires data of a first posture angle and a second posture angle respectively detected by the posture angle sensors. The posture angle correction section corrects a difference between the first posture angle and the second posture angle after starting a motion of the measurement object in accordance with a difference between the first posture angle and the second posture angle before starting the motion of the measurement object. The deformation amount calculation section calculates a deformation amount of the measurement object based on a difference between the first posture angle and the second posture angle corrected by the posture angle correction section.

Abstract: The present disclosure is directed to a body-worn sensor-based system for evaluating the biomechanics and the motor adaptation characteristics of postural control during a sport activity such as a golf swing. Various embodiments use sensors such as accelerometers, gyroscopes, and magnetometers to measure the three-dimensional motion of ankle and hip joints. In several embodiments, additional sensors attached to other body segments are used to improve the accuracy of the data or detect particular instants during the swing (e.g., top of back swing, instant of the maximum speed of arm, and instant of ball impact). In a golf embodiment, the system combines the measured data in conjunction with a biomechanical model of the human body to: (1) estimate the two-dimensional sway of the golfer's center of mass; (2) quantify and evaluate the golfer's balance via his/her postural compensatory strategy; and (3) provide visual feedback to the golfer for improving dynamic postural control.

Abstract: A weight shift feedback apparatus senses a weight shift in a golf swing motion of the user, collects, synchronizes and stores the sensed weight shift information, analyzes a weight value applied to each foot of the user with respect to time based on the stored data, and extracts important points of a swing. The weight shift of the user may be evaluated based on an address point, a backswing top point, an impact point, and a point where the weight value applied to each foot has a maximum value, and the feedback information for the evaluation may be provided to the user.

Abstract: This invention is an apparatus and method for measuring or analyzing a golf swing. Measurement or analysis is made relative to energy generation and transfer through a player's body and club. The measurement or analysis data is principally obtained from the player's ground-reaction forces. Processed signals are analyzed with an artificial intelligence system. Ground-reaction forces relate to reaction forces which occur between a standing surface and the player's feet. The apparatus and method measures or analyses a golf swing in an automatic manner or in an automatic and interactive manner.

Abstract: A weight shift feedback apparatus senses a weight shift in a golf swing motion of the user, collects, synchronizes and stores the sensed weight shift information, analyzes a weight value applied to each foot of the user with respect to time based on the stored data, and extracts important points of a swing. The weight shift of the user may be evaluated based on an address point, a backswing top point, an impact point, and a point where the weight value applied to each foot has a maximum value, and the feedback information for the evaluation may be provided to the user.

Abstract: An apparatus for analyzing a golf swing or other biomechanical movement includes first and second rectangular force plate mounted within a respective first and second rigid rectangular frame by means of at least one load cell proximate each corner of each rectangular force plate. The second rigid rectangular frame being secured to the first rigid rectangular frame so as to prevent relative lateral movement therebetween, and each of the load cells is operably connected to one or more microprocessor devices for receiving a signal generated by each of the load cells indicative of a force applied thereto.

Abstract: This invention is an apparatus and method for measuring or analyzing a golf swing. Measurement or analysis is made relative to energy generation and transfer through a player's body and club. The measurement or analysis data is principally obtained from the player's ground-reaction forces. Processed signals are analyzed with an artificial intelligence system. Ground-reaction forces relate to reaction forces which occur between a standing surface and the player's feet. The apparatus and method measures or analyses a golf swing in an automatic manner or in an automatic and interactive manner.

Abstract: An apparatus and method is provided for analyzing a golfer's individual swing attributes and determining, based on that analysis, a suitable golf club configuration for that golfer. The swing analysis apparatus include video cameras for obtaining video images of a golfer swinging a golf club, such as a putter, at a golf ball. Images obtained from the video cameras may then be analyzed to determine what golf club dimensions will provide improved results in combination with the golfer's individual swing characteristics. The apparatus may additionally include a golf club having predetermined dimensions. When such a golf club is included, images from the video cameras may be analyzed to determine how the golf club of known dimensions must be adjusted to provide the golfer with desirable swing results. The apparatus may also include a method for confirming the dimensions that it is believed will provide a golfer with improve swing results.

Abstract: A golf training system includes a stationary front foot support, a pivotable rear foot support and a raised ball support. The pivotable rear foot support includes a rectangular mounting bracket transversely disposed across an enlarged base and a flat balance plate that directly teeters on the mounting bracket. In use, the golf training system can be used to promote proper weight distribution throughout a golf swing using sensory and auditory feedback. Specifically, the golfer disposes the rear foot on top of the balance plate and the front foot across the stationary front foot support with body weight maintained on the inner portion of the rear leg throughout the backswing. The golfer initiates the downswing by firing the hips open and driving the lower body forward until the balance plate pivots and strikes the base, thereby providing the user with immediate audible and tactile response of proper execution.

Abstract: A method of evaluating a golf club is disclosed. The method includes a step (St1) of determining motions of the golf club during a swinging motion of a golf player including a period ranging from a time (Ts) to a time (Tf); a step (St2) of obtaining in a time series power index values (Pw) during the period ranging from the time (Ts) to the time (Tf), based on the result of the determination; a step (St3) of obtaining a power integration value (Sp) by integrating the power index values (Pw) during the period ranging from the time (Ts) to the time (Tf); a step (St4) of calculating club energy (Eg) of the golf club at the time (Tf); and a step (St5) of quantitatively evaluating club suitability based on the power integration value (Sp) and the club energy (Eg). Each of the power index values (Pw) is a value which is correlated to a power of a work provided from the golf player to the golf club.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: A golf training system includes a stationary front foot support, a pivotable rear foot support and a raised ball support. The pivotable rear foot support includes a rectangular mounting bracket transversely disposed across an enlarged base and a flat balance plate that directly teeters on the mounting bracket. In use, the golf training system can be used to promote proper weight distribution throughout a golf swing using sensory and auditory feedback. Specifically, the golfer disposes the rear foot on top of the balance plate and the front foot across the stationary front foot support with body weight maintained on the inner portion of the rear leg throughout the backswing. The golfer initiates the downswing by firing the hips open and driving the lower body forward until the balance plate pivots and strikes the base, thereby providing the user with immediate audible and tactile response of proper execution.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: A golf swing aid apparatus includes a base forming a sound chamber, a cover pivoted to the base, and a noisemaker configured to actuate a clicker in the base when the cover is released. The present apparatus provides a click noise immediately prior to ball impact during a golfer's swing, thus providing feedback on synchronized timing of the swing. The feedback is real time, and is of a nature whereby a golfer can recognize its feedback without disrupting the golf swing itself. The apparatus can be anchored using golf ball tees, and an accessory used that helps alignment of the golfer's stance. Notably, the present apparatus can be used in a variety of sports with a swing where weight transfer is important, such as softball and baseball.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: A sports training device is provided that conveys a perceptible cue to a user indicative of a weight transfer event for evaluating timing correctness of such weight transfer event. The device includes an enclosure having a base chamber defined therein and top wall upon which a user stands or places a foot during use. The enclosure flexes or deforms during use, while an amount of user weight supported by the enclosure changes. As the enclosure flexes or deforms, the device conveys the perceptible cue as an audible and/or visual indication of, e.g., the initiate of the weight transfer event.

Abstract: Systems and methods are described for providing coaching, training, or equipment specification information to individual golfers based on data generated during their individual golf swings. Additionally, data hubs are described that provide information and services to individuals based on data collected for a community of multiple golfers. Such community data hub systems and methods may provide one or more of the following: (a) storage of scoring data, swing data, ball flight data, and/or equipment data for multiple golfers; (b) at least some level of individual access to the stored data for the community; and/or (c) electronic interaction between golfers within the community.

Abstract: Described is a swing training device comprising a first foot plate, a second of foot plate, a connector connecting the first foot plate to the second foot plate, a first foot pad pivotably mounted on the first foot plate, and a second foot pad pivotably mounted on the second foot plate. The swing training device may be useful for teaching balance and developing core muscles used while swinging a sporting device.

Abstract: Apparatus (1) comprises a standing surface (2) for the player; a communication means (27); and a plurality of sensors (11) which are operable to measure force. The standing surface (2) comprises two separate foot platforms (3, 4) for the player's feet. Each foot platform (3, 4) comprises a supporting structure or supporting members where vertical forces are distributed to a plurality of discrete positions (5). The sensors (11) are located at the discrete positions (5) to which the vertical forces are distributed. The sensors (11) are operable to measure vertical forces.

Abstract: A golf swing aid apparatus includes a base forming a sound chamber, a cover pivoted to the base, and a noisemaker configured to actuate a clicker in the base when the cover is released. The present apparatus provides a click noise immediately prior to ball impact during a golfer's swing, thus providing feedback on synchronized timing of the swing. The feedback is real time, and is of a nature whereby a golfer can recognize its feedback without disrupting the golf swing itself. The apparatus can be anchored using golf ball tees, and an accessory used that helps alignment of the golfer's stance. Notably, the present apparatus can be used in a variety of sports with a swing where weight transfer is important, such as softball and baseball.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: An interactive sports training device has a plurality of light sources, multiple sensor means and a processor to facilitate the manoeuvring, passing and shooting of an object. Each sensor means is associated with one of the plurality of light sources, the sensor means being adapted to be triggered when an object is brought into close proximity with an activated light source. A processor means is coupled to the light sources and sensor means and is provided with at least one training program, and the processor means controls activation of the light sources according to at least one training program. When an object is placed in close proximity to an activated light source, the sensor communicates with the processor to deactivate the activated light source and to activate another light source in accordance with a training program. In use, it provides a system for simulating the unpredictable and competitive nature of multi-player sports by allowing a user to practice on his own in a ‘real life’ environment.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: This invention is an apparatus and method for measuring or analysing a golf swing. Measurement or analysis is made relative to energy generation and transfer through a player's body and club. The measurement or analysis data is principally obtained from the player's ground-reaction forces. Processed signals are analysed with an artificial intelligence system. Ground-reaction forces relate to reaction forces which occur between a standing surface and the player's feet. The apparatus and method measures or analyses a golf swing in an automatic manner or in an automatic and interactive manner.

Abstract: An efficient, low cost and versatile golf practice device, which stimulates the angular stances frequently found during play on a course. The practicing golfer stands on top of a turf practice platform. This platform sits flat on top a region comprising a plane. The plane cuts off a slice of the area of a sphere. The plane faces north towards the sky while the opposite side is comprised of a curved arc portion that faces south, towards the earth. The spherical slice, (containing the flat platform), fits as a male portion into and on top of a female inverted dome region. The female spherical slice itself encompasses a space less than a full hemisphere. The female spherical slice is set inside the top surface of a rectangular box of length and width proportions roughly similar to an average driving range mat. The golfer stands on the platform and is capable of simulating a plurality of hitting conditions using the simple process of manual adjustment.

Abstract: Described is a portable and intuitive golf swing improvement device for indicating the proper shift of a golfer's body weight to the front foot during a down swing. More specifically, the swing improvement device measures the shift of the golfer's body weight during a golf swing and indicates when such shift is in accordance with a technically sound swing. Additionally, the swing improvement device is self-sufficient and portable such that the device is deployable almost anywhere. The swing improvement device also provides swing analysis in a manner that is immediately understandable to the golfer.

Abstract: A sports training device is provided that conveys a perceptible cue to a user indicative of a weight transfer event for evaluating timing correctness of such weight transfer event. The device includes an enclosure having a base chamber defined therein and top wall upon which a user stands or places a foot during use. The enclosure flexes or deforms during use, while an amount of user weight supported by the enclosure changes. As the enclosure flexes or deforms, the device conveys the perceptible cue as an audible and/or visual indication of, e.g., the initiate of the weight transfer event.

Abstract: The present invention is a golf swing power shift board that has various positioning markers within the bottom surface of the board to receive height adjustment risers in various orientations so that different types of golf swings can be practiced in order to improve the golfer's golf swing and balance.

Abstract: A golf swing training device. A warning device is connected to a foot actuated switch and a sound actuated switch. A power source provides power to the warning device via the sound actuated switch and the foot actuated switch. The warning device emits a warning when it senses the sound of a golf club hitting a golf ball while simultaneously the foot actuated switch senses the pressure of the golfer's back foot heel. In a preferred embodiment, the power source is a battery. In a preferred embodiment the golf swing training device also includes a toggle switch that allows the golfer to bypass the sound actuated switch so that when the golfer lifts his heel the foot actuated switch allows power to flow to the warning device so that the golfer knows more precisely when he is lifting his heel. In another preferred embodiment a pneumatic bulb is connected to the foot actuated switch via tubing and the golfer activates the foot actuated switch by stepping on the pneumatic bulb with his heel.

Abstract: An apparatus and method is provided for analyzing a golfer's individual swing attributes and determining, based on that analysis, a suitable golf club configuration for that golfer. The swing analysis apparatus include video cameras for obtaining video images of a golfer swinging a golf club, such as a putter, at a golf ball. Images obtained from the video cameras may then be analyzed to determine what golf club dimensions will provide improved results in combination with the golfer's individual swing characteristics. The apparatus may additionally include a golf club having predetermined dimensions. When such a golf club is included, images from the video cameras may be analyzed to determine how the golf club of known dimensions must be adjusted to provide the golfer with desirable swing results. The apparatus may also include a method for confirming the dimensions that it is believed will provide a golfer with improve swing results.

Abstract: A golf swing aid for assisting a golf player in properly maintaining alignment, balance, and lower body biomechanics during a golf swing comprising a base having a bottom surface and a top surface; a vertical support post having a first end, a second end, a longitudinal axis, a first region proximate to the vertical post first end, a second region proximate to the second end, and a plurality of adjustment holes defined through the second region; a first adjustment rod having a first end, and a second end; and a second adjustment rod having a first end, a second end, and a flange extending from the second adjustment rod first end; wherein the first and second adjustment rod first ends each engage one of the vertical post adjustment holes to releasably mount the adjustment rods to the vertical support post second region.

Abstract: The present invention relates to a system and method for correcting a golf swing using the Internet, which allows a golf to correct his golf swing through the use of the Internet, thus improving the golfing ability of the golfer. The system of the present invention includes photographing means, image processing means, weight center detecting means, club head detecting means, signal processing means, control means, display means, practice center communication means, personal communication means, a Web server, a three-dimensional data generating server, a golf swing managing server, and a mail server. The system of the present invention can provide moving pictures of golf swing practice and golf swing correcting data via the Internet, so a user's golf swing can be easily corrected at a golf practice center, home or office.

Abstract: Apparatus (1) comprises a standing surface (2) for the player; a communication means (27); and a plurality of sensors (11) which are operable to measure force. The standing surface (2) comprises two separate foot platforms (3, 4) for the player's feet. Each foot platform (3, 4) comprises a supporting structure or supporting members where vertical forces are distributed to a plurality of discrete positions (5). The sensors (11) are located at the discrete positions (5) to which the vertical forces are distributed. The sensors (11) are operable to measure vertical forces.

Abstract: Disclosed herein is a device for correcting golf swing posture. The device includes a footboard which is formed so that a foot is seated and supported thereon, and has a pair of facing locking brackets and a foot support part for supporting a foot. A support cuff is provided at an end of the footboard to support a leg, a lower surface of the support cuff, which contacts the footboard, being formed to be convex such that the support cuff rotates within a range of swing motion, the support cuff having locking recesses which are coupled to the locking brackets and a leg support part for supporting the leg. A fastening means detachably fastens the locking brackets of the footboard to the locking recesses of the support cuff. Thereby, the support cuff rotates about the fastening means at a predetermined angle as swing motion is conducted.

Abstract: A golf training device comprises an input portion (10) for inputting influence data comprising information that might affect how the user should address the ball, a calculation portion (13) for calculating address data, based on the input influence data, a playing surface (9). and an indication portion (14) for indicating address information from beneath the playing surface to the user, based on the calculated address data, relating to how the user should address the ball. In another aspect, a golf training device is provided for improving a user's bodyweight distribution during a golf stroke, comprising measurement means for providing a time series of bodyweight distribution measurements storage means for storing the time series of measurements and indication means for providing a comparison against a corresponding ideal.

Abstract: In one embodiment, a method for a user to practice a golf swing. The method includes: (a) standing on a balance board; and (b) performing at least a portion of the golf swing while standing on the balance board. If the user performs the portion of the golf swing while maintaining the user's front-to-rear weight distribution within a threshold range, then the balance board maintains a balanced orientation. If the user performs the portion of the golf swing without maintaining the user's front-to-rear weight distribution within the threshold range, then the balance board tilts either forward or rearward to indicate to the user that the user's front-to-rear weight distribution is outside the threshold range. Other embodiments include balance boards for golf training.

Abstract: A novel system and method for controlling and stabilizing the swing mechanics of a golfer is disclosed. More specifically, a system for and method of stabilizing the right knee (the left knee for left handed golfers) of a golfer such that a critical knee flexion angle is maintained throughout the golf swing, the weight of the golfer is properly transferred, and the right hand side (left hand side for left handed golfers) is properly loaded for a reliable, consistent, controlled, and safe golf swing. The system and method further comprise use of a putting attachment that can be removably secured to a primary apparatus for controlling a golfer's stance through all phases of a putting stroke.

Abstract: An aid for visual detection of a golfer's head movement, constructed of card or plastics sheet includes a black-faced sighting member that has a circular aperture there through and is hinged to a base member Adjustment of the inclination of the sighting member to the base member brings a black disc-marking line sight through the aperture. Lugs of a stay member which is hinged to the sighting member for setting the sighting-member inclination are held engaged in selected notches of the base member by a sprung-up tongue; in an alternative form of aid a stay member engages in transverse slots. Head movement is observed as apparent movement of the disc-marking within the aperture.

Abstract: A rocking footplate alerts an athlete such as a golfer or a baseball player to the occurrence of improper rear foot weight placement. The footplate is placed under the athlete's rear foot and includes upper and lower plates which are joined by a hinge having an axis of rotation which is aligned with the center of the foot. The bottom of the device includes spikes which engage the ground to provide a stable base for the hinged top plate. The top plate is in the anatomical shape of a foot to aid proper foot placement on the device.

Abstract: A system and method for assisting an individual to perform a correct and accurate golf swing indicating to the individual if he has improperly rotated about his center line axis, the device being located on the top of or the crown of the individual's head so that it may be substantially aligned with the center line axis of the individual.