method, the intra-rater correlation coefficient was above.83,
which suggests high credibility. Participants stood with eyes
open on the foot plate with their second toe and heel over
the scale lines and maintained the position for 30 s; measurements
were performed 3 times, maintaining for 30 s with eyes
closed. The average of the measurements was used as an indicator
of anterior-posterior and medial-lateral postural sway,
speed, and speed moment.