Abstract: A force measurement system includes an instrumented treadmill with one or more displaceable components having one or more respective surfaces for receiving one or more respective limbs of the subject, and at least one force transducer. The force measurement system further includes a data processing device configured to receive one or more load signals from the at least one force transducer, to convert the one or more load signals into one or more output load components, and to determine one or more gait parameters for the subject from the one or more output load components; and a sensory output device configured to receive at least one sensory output signal from the data processing device, and to generate at least one of a visual indicator, an audible indicator, and a tactile indicator that is based upon the at least one sensory output signal and provides biofeedback to the subject.

Abstract: A system for testing the vision of a subject incorporating eye movement tracking is disclosed herein. The system includes a head motion sensing device configured to measure a velocity or speed of a head of a subject, an eye movement tracking device configured to measure an eye movement of the subject, a visual display device configured to display one or more visual objects so that the one or more visual objects are visible to the subject; and a data processing device operatively coupled to the head motion sensing device, the eye movement tracking device, and the visual display device, the data processing device being specially programmed to carry out the steps of the vision tests. A method for the testing the vision of a subject incorporating eye movement tracking is also disclosed herein.

Abstract: An instrument for measuring near point of convergence (NPC) and/or near point of accommodation (NPA) is disclosed herein. The instrument includes at least one visual target disposed on or in the instrument, the at least one visual target viewable by a subject that is facing the instrument; a distance measuring device configured to emit one or more output signals that are representative of a distance between a surface of the instrument and a body surface of the subject spaced apart from the surface of the instrument; and a processing device operatively coupled to the distance measuring device, the processing device configured to receive the one or more output signals that are output by the distance measuring device and to calculate the distance between the surface of the instrument and the body surface of the subject spaced apart from the surface of the instrument using the one or more output signals.

Abstract: A system for testing the vision of a subject and/or training head-eye coordination associated with the vision of a subject is disclosed herein. The system includes a visual display device having an output screen, the visual display device configured to display one or more visual objects on the output screen so that the one or more visual objects are visible to the subject; and a data processing device, the data processing device operatively coupled to the visual display device, the data processing device being specially programmed to carry out the steps of the vision tests and training procedures. In one or more embodiments, the system may further include a motion sensing device, the motion sensing device configured to measure a velocity or speed of a head of a subject, and the motion sensing device being operatively coupled to the data processing device.

Abstract: A measurement and testing system comprising a plurality of measurement assemblies and a data acquisition and processing device is disclosed. Each of the plurality of measurement assemblies includes a measurement surface for receiving at least one portion of a body of a subject; and at least one measurement device configured to sense one or more measured quantities and output one or more signals that are representative of the one or more measured quantities. In one embodiment, the data acquisition and processing device is configured to determine whether a load is being applied to a particular one of the plurality of measurement assemblies by a first or second body portion of the subject. In another embodiment, the data acquisition and processing device is configured to construct a first virtual measurement assembly from a first subset of measurement assemblies and a second virtual measurement assembly from a second subset of measurement assemblies.

Abstract: A force measurement system includes an instrumented treadmill with one or more treadmill belts configured to rotate at a plurality of different speeds, one or more speed adjustment mechanisms coupled to the one or more treadmill belts, and at least one force transducer. The force measurement system further includes a data processing device configured to receive one or more signals that are representative of one or more loads being applied to one or more respective surfaces of the one or more treadmill belts by a subject, and to convert the one or more signals into one or more output load components, the data processing device further configured to determine a position of a body portion of the subject and to control the speed of the one or more treadmill belts using the position determined for the body portion of the subject.

Abstract: A force measurement system includes a force measurement assembly configured to receive a subject thereon, at least one visual display device having an output screen, and one or more data processing devices configured to generate a screen image comprising a plurality of substantially concentric bands on the output screen of the at least one visual display device that is configured to create a visual stimuli for the subject disposed on the force measurement assembly. A plurality of methods for testing a subject is also disclosed herein. The methods for testing a subject utilize a force measurement assembly and/or augmented reality glasses. A measurement system including a motion detection system, an object position detection system, and/or an eye movement tracking device is additionally disclosed herein.

Abstract: A system for testing the vision of a subject is disclosed herein. The system includes a motion sensing device, the motion sensing device configured to measure a velocity or speed of a head of a subject; a visual display device having an output screen, the visual display device configured to display one or more visual objects on the output screen so that the one or more visual objects are visible to the subject; and a data processing device, the data processing device operatively coupled to the motion sensing device and the visual display device, the data processing device being specially programmed to carry out the steps of the vision tests. A method for the testing the vision of a subject is also disclosed herein. The vision tests may assess the dynamic visual acuity and/or the gaze stabilization of the subject.

Abstract: A system and method for merging a first database with a second database (one-way merge), and a system and method for merging two databases with one another (two-way merge) is described herein. During the one-way merge, new or updated records are transferred from a copy of a client database to a server database after it is determined that the server database either does not contain one or more records in the copy of the client database or contains an older version of one or more records in the copy of the client database. During the two-way merge, new or updated records are transferred between a client database and a server database after it is determined that either the client database or the server database does not contain one or more records in the other database or contains an older version of one or more records in the other database.

Abstract: A dual force plate system having two independent measurement surfaces is disclosed herein. The dual force plate system includes a first plate component having a first measurement surface for receiving a first portion of a body of a subject, a second plate component having a second measurement surface for receiving a second portion of the body of the subject, a first force transducer element operatively coupled to the first plate component, a second force transducer element operatively coupled to the second plate component, and a third force transducer element operatively coupled to both the first plate component and the second plate component. A force plate system for computing a center of gravity of a subject is also disclosed herein. In addition, a method for determining the center of gravity for a subject disposed on a force measurement assembly is described herein.

Abstract: A measurement and testing system includes a measurement assembly having at least one measurement device, at least one visual display device, and a data acquisition and processing device operatively coupled to the at least one measurement device of the measurement assembly and the visual display device. In one embodiment, the data acquisition and processing device is configured to generate one or more global reports utilizing the output of the measurement assembly, generate an information icon on the output screen of the visual display device, and assign the one or more global reports to the information icon. In other embodiments, the data acquisition and processing device is configured to automatically regulate the availability of tests based upon a requisite measurement assembly or a predetermined condition, and/or determine whether the output data from a plurality of measurement assemblies is to be combined so as to create a single virtual measurement assembly.

Abstract: A force measurement system includes a force measurement assembly configured to receive a subject thereon; at least one visual display device having an output screen, the output screen of the visual display device configured to at least partially surround the subject disposed on the force measurement assembly, the visual display device configured to display at least one target or marker and at least one displaceable visual indicator, and/or one or more virtual reality scenes, on the output screen thereof; and one or more data processing devices operatively coupled to the force measurement assembly and the visual display device. A method for training a subject disposed on a force measurement assembly is also disclosed herein. A force and motion measurement system including a force measurement assembly, a motion detection system, at least one visual display device, and one or more data processing devices is additionally disclosed herein.

Abstract: A fall and/or concussion prediction system includes: (i) a measurement assembly configured to receive a subject having a surface for receiving at least one portion of a body of a subject and at least one measurement device, the at least one measurement device configured to sense one or more measured quantities and output one or more signals that are generated based upon the subject's contact with the surface; (ii) a visual display device, the visual display device configured to display a task, an interactive game, a virtual reality scenario, and/or an immersive graphic environment that is visible to the subject; and (iii) a data processing device operatively coupled to the at least one measurement device of the measurement assembly and the visual display device. In one embodiment, a dual-task protocol is used to assess a person's risk for falling and/or predict whether or not a person has sustained a concussion.

Abstract: A force measurement system having a displaceable force measurement assembly includes: a force measurement assembly with a surface configured to receive a subject, and having at least one force transducer; at least one actuator operatively coupled to the force measurement assembly, the at least one actuator configured to displace the force measurement assembly; at least one visual display device having an output screen, the at least one visual display device configured to display one or more virtual reality scenes on the output screen so as to create a simulated environment for the subject; and one or more data processing devices operatively coupled to the force measurement assembly, the at least one actuator, and the at least one visual display device. In one or more embodiments, a method for testing a subject disposed on a displaceable force measurement assembly is further disclosed.

Abstract: A system and method for merging a first database with a second database (one-way merge), and a system and method for merging two databases with one another (two-way merge) is described herein. During the one-way merge, new or updated records are transferred from a copy of a client database to a server database after it is determined that the server database either does not contain one or more records in the copy of the client database or contains an older version of one or more records in the copy of the client database. During the two-way merge, new or updated records are transferred between a client database and a server database after it is determined that either the client database or the server database does not contain one or more records in the other database or contains an older version of one or more records in the other database.

Abstract: A measurement and testing system includes a measurement assembly having at least one measurement device, at least one visual display device, and a data acquisition and processing device operatively coupled to the at least one measurement device of the measurement assembly and the visual display device. In one embodiment, the data acquisition and processing device is further configured to generate a timeline bar with date icons on the output screen of the visual display device. In other embodiments, the data acquisition and processing device is further configured to automatically displace a side bar menu on the output screen when a user switches from a current mode to another mode, read external files containing one or more testing routines written off-site, and/or automatically alert a system user when one or more signals from a measurement device are no longer detected and/or are corrupted.

Abstract: A force measurement assembly includes a first component supported by a first load measuring device and having a first measurement surface; a second component supported by a second load measuring device, spaced apart from the first component by a gap, and having a second measurement surface; and a third load measuring device operatively coupled to both the first component and the second component; wherein the first load measurement device is configured to output at least one first quantity that is representative of the load being applied to the first measurement surface, the second load measurement device is configured to output at least one second quantity that is representative of the load being applied to the second measurement surface, and the third load measuring device is configured to output at least one third quantity that is representative of a load being transferred between the first component and the second component.

Abstract: A system and method for merging a first database with a second database (one-way merge), and a system and method for merging two databases with one another (two-way merge) is described herein. During the one-way merge, new or updated records are transferred from a copy of a client database to a server database after it is determined that the server database either does not contain one or more records in the copy of the client database or contains an older version of one or more records in the copy of the client database. During the two-way merge, new or updated records are transferred between a client database and a server database after it is determined that either the client database or the server database does not contain one or more records in the other database or contains an older version of one or more records in the other database.