TABLE 5.

Postural control measures by group

Sensory Condition1,2	Ellipse of body sway area (mm2) Sacrum		Velocity (RMS)3 Sacrum
	TD	FASD	TD	FASD
LLL
Mean (SD)	15.5 (6.5)	14.2 (6.7)	10.4 (1.5)	10.9 (1.5)
Median	14.1	12.9	10.3	10.3
(min, max)	(5.2, 24.3)	(6.8, 26.2)	(7.9, 12.4)	(9.6, 14.2)
p value4	0.44		0.59
MLL
Mean (SD)	14.7 (6.3)	19.9 (14.1)	10.8 (1.5)	13.0 (4.4)
Median	12.7	16.1	11.0	12.1
(min, max)	(8.7, 28.2)	(8.0, 54.3)	(8.5, 13.4)	(9.8, 24.2)
p value4	0.52		0.26
HLL
Mean (SD)	15.3 (6.2)	16.6 (7.9)	10.4 (1.6)	12.8 (2.3)
Median	13.3	15.6	10.4	12.0
(min, max)	(8.4, 25.5)	(6.7, 32.4)	(8.0, 13.6)	(10.2, 17.6)
p value4	0.95		0.11
LML
Mean (SD)	14.4 (6.8)	14.0 (6.0)	10.8 (1.4)	11.4 (1.5)
Median	13.3	14.3	11.4	11.5
(min, max)	(5.6, 26.4)	(5.2, 25.2)	(8.6, 13.0)	(9.0, 14.0)
p value4	0.95		0.59
LHL
Mean (SD)	17.0 (8.1)	16.7 (7.5)	10.5 (2.0)	11.8 (1.2)
Median	15.5	17.2	10.2	11.7
(min, max)	(7.2, 31.8)	(6.3, 26.2)	(7.4, 14.1)	(9.9, 13.8)
p value4	0.77		0.26
LLM
Mean (SD)	16.5 (11.6)	15.7 (9.2)	10.4 (1.8)	12.0 (2.8)
Median	11.9	12.7	10.2	11.5
(min, max)	(8.0, 45.0)	(9.3, 38.8)	(7.8, 13.1)	(9.2, 19.0)
p value4	0.95		0.37
LLH
Mean (SD)	15.2 (5.2)	16.8 (12.8)	10.8 (1.8)	14.0 (5.8)
Median	16.3	14.8	10.9	12.3
(min, max)	(6.5, 22.0)	(6.0, 48.2)	(7.6, 13.2)	(10.3, 29.0)
p value4	0.37		0.07

¹Sensory conditions are presented in the following order visual, somatosensory, vestibular (e.g., MLL = visual stimulus at Medium frequency; somatosensory stimulus at Low frequency; vestibular stimulus at Low frequency).

²L = low frequency movement; M = medium frequency movement; H = high frequency movement;

³RMS = root mean square;

⁴Wilcoxon signed-rank tests for paired data.