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. Author manuscript; available in PMC: 2019 Jul 22.
Published in final edited form as: Gerontology. 2015 Dec 18;62(5):553–563. doi: 10.1159/000442253

Figure 2. An illustration of the ankle reaching balance task.

Figure 2

The participant performs the ankle reaching balance task in front of a monitor providing real-time ankle joint feedback as a red cursor. A: The ankle reaching task involves moving a red cursor from a start circle (yellow) to a target circle (green) in a straight line by rotating the ankle joint by leaning forward. Task repetition in the opposite direction (leaning backward) completes one cycle. B: The ankle reaching task is conducted in anterior-posterior and medial-lateral direction. C: The trajectory of the cursor is rotated by the computer by an angle of 20°. The participant needs to observe this change in trajectory and compensate by adjusting ankle/hip coordination. All exercises were administered inside the clinic without the need of supervision and through on-screen feedback. However, a supervisor was present in the room to guarantee safety.