Figure 4.

Participant position for all single-legged balance tasks. The participants' position for the straight-knee balance task on the, A, firm and, B, foam surfaces. The participants' position for the bent-knee balance task on the, C, firm and, D, foam surfaces. Their knees were bent to a 30° angle as measured by a plastic goniometer before the start of each trial. The participants' position for the single-legged squat balance task on, E, firm and, F, foam surfaces. Participants were instructed to reach out anteriorly with the contralateral foot as far as possible. Reach distance was recorded in centimeters.