Applicability of Smartphone for Dynamic Postural Stability Evaluation

Table 1

Comparison of dynamic balance parameters obtained by Sigma Balance Platform and smartphone among women and men.

Plane	Men (n=48)				Women (n=37)				d
	Mean	SD	Min	Max	Mean	SD	Min	Max
Angular path measured by smartphone [rad]
Frontal	264.09	95.48	108.60	539.13	230.60	98.39	59.91	454.12	33.49
Sagittal	273.45	122.35	53.07	552.49	207.89	98.62	63.13	450.16	65.56
GCP path measured by Sigma Balance Platform [mm]
Frontal	24.52	8.79	9.95	49.76	21.33	9.15	5.47	43.03	3.19
Sagittal	24.46	10.89	4.15	47.20	18.91	8.69	6.08	40.17	5.55
Body sway variability measured by smartphone
Frontal	3.62	1.13	1.64	6.46	3.36	1.60	0.65	7.00	0.27
Sagittal	4.35	1.82	0.52	7.89	3.39	1.89	1.04	7.89	0.96
Body sway variability measured by Sigma Balance Platform
Frontal	0.31	0.09	0.14	0.54	0.28	0.13	0.07	0.58	0.02
Sagittal	0.36	0.14	0.04	0.64	0.28	0.15	0.08	0.64	0.08

GCP: geometric center of platform, p<0.05.