Abstract: A gait perturbation system and a method for testing and/or training using the gait perturbation system is disclosed herein. The gait perturbation system includes a gait perturbation device and a data processing device. The gait perturbation device includes one or more displaceable components configured to be displaced at a plurality of different speeds, and having one or more respective surfaces for receiving one or more respective limbs of a person; and one or more speed adjustment mechanisms coupled to the one or more displaceable components to adjust the speed set point at which the one or more displaceable components are displaced. The data processing device is configured to generate a signal for introducing a perturbation to the one or more displaceable components, and to control the speed set point of the one or more displaceable components such that the one or more displaceable components perturb a gait of the person.

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.