Table 2.

Time to perform the test, eyes open and eyes closed, on the floor and on foam. Head movement conditions are head still, head pitch and head yaw. Means, (standard deviation, ranges). Controls are aged 21–79. Data for elderly controls, aged 80+, are shown separately for conditions on foam with eyes closed.

	On the floor			On foam
	Still	Pitch	Yaw	Still	Pitch	Yaw
Eyes open
Controls	30 (0, 30)	30 (0, 29.9–30)	30 (0, 30)	30 (0, 29.9–30)	30 (0, 30)	29.6 (2.9, 7.5–30)
AN	30 (0, 30)	30 (0, 30)	30 (0, 30)	30 (0, 30)	28.1 (6.2, 4.5–30)	26.4 (8.4, 4.1–30)
BPPV	30 (0, 30)	30 (0, 30)	30 (0, 30)	30 (0, 30)	30 (0.1, 29–6–30)	28.1 (5.8, 9.1–30)
UW	30 (0, 30)	30 (0, 30)	30 (0, 30)	30 (0, 30)	27.0 (7.4, 7.7–30)	29.0 (3.7, 13.0–30)
Eyes closed
Controls	30 (0.1, 29.5–30)	30 (0, 30)	30 (0, 30)	24.4 (10, 2.4–30)	20.5 (10.4, 2.3–30)	19.8 (10.4, 2.6–30)
AN	30 (0, 30)	29.2 (3.5, 15.3–30)	29.1 (4.0, 13.2–30)	8.4 (8.3, 2.5–30)	5.9 (6.3, 2.5–30)	6.7 (6.7, 2.7–30)
BPPV	30 (0, 30)	30 (0, 30)	30 (0, 30)	14.4 (11.3, 2.1–30)	11.3 (9.9, 3.1–30)	12.3 (9.5, 2.6–30)
UW	28.4 (5.6, 7.2–30)	28.4 (5.9, 7.6–30)	27.4 (7.6, 2.7–30)	14.9 (11.7, 1.6–30 7.7–30)	9.7 (9.1, 1.8–30)	10.3 (10.0, 2.1–30)