The Bland-Altman plots in the test-retest reliability assessment for the fast speed condition.

The plots display the agreement between the two sessions for measurements of the subtask speed of the TUG: (A) sit-to-stand, (B) walk meter 0–1, (C) walk meter 1–2, (D) walk meter 2–3, (E) turn around, (F) walk meter 3–2, (G) walk meter 2–1, (H) walk meter 1–0, and (I) stand-to-sit. The x-axis represents the mean values, and the y-axis represents the mean difference between the two sessions for each subtask of TUG. Reference lines show the mean difference between the two sessions (solid line) and 95% LOA for the mean difference (dash line).