An exercise device including a support surface and at least two position
sensors arranged along a sensing plane relative to the support surface,
with the position sensors adapted to detect a presence of a user along
the sensing plane. The exercise device further includes a controller in
communication with the position sensors to determine a position of the
user relative to the sensing plane. The controller has a closed loop
feedback mode adapted to process at least one input parameter provided by
the user, and to further measure a performance criteria of the user
related to the input parameter and to provide feedback to the user
indicative of a measurement of the performance criteria.