Immediate Beneficial Effects of Mental Rotation Using Foot Stimuli on Upright Postural Stability in Healthy Participants

Table 2

Comparison of pre- and postintervention in each sway value for two standings in the three kinds of interventions in Experiment  2.

	Unipedal standing			Bipedal standing
	Pre	Post		Pre	Post
MR of foot stimuli
Mean velocity (cm/sec)	3.50 ± 1.03	3.08 ± 0.88	***	1.21 ± 0.37	1.18 ± 0.41	n.s
A-P velocity (cm/sec)	2.30 ± 0.77	2.01 ± 0.71	***	0.75 ± 0.20	0.73 ± 0.23	n.s
M-L velocity (cm/sec)	2.17 ± 0.62	1.92 ± 0.48	***	0.79 ± 0.32	0.76 ± 0.34	n.s
RMS area (cm^2)	2.95 ± 1.49	2.82 ± 1.20	n.s	1.75 ± 1.00	1.95 ± 1.31	n.s
SR of foot stimuli
Mean velocity (cm/sec)	3.40 ± 0.76	3.26 ± 0.73	n.s	1.17 ± 0.22	1.17 ± 0.31	n.s
A-P velocity (cm/sec)	2.20 ± 0.59	2.13 ± 0.56	n.s	0.73 ± 0.17	0.75 ± 0.24	n.s
M-L velocity (cm/sec)	2.13 ± 0.51	2.05 ± 0.46	n.s	0.74 ± 0.20	0.73 ± 0.22	n.s
RMS area (cm^2)	2.78 ± 0.91	2.83 ± 1.06	n.s	1.93 ± 0.98	2.29 ± 1.63	n.s
Rest
Mean velocity (cm/sec)	3.32 ± 0.76	3.22 ± 0.75	n.s	1.21 ± 0.31	1.14 ± 0.33	n.s
A-P velocity (cm/sec)	2.14 ± 0.59	2.09 ± 0.61	n.s	0.77 ± 0.22	0.73 ± 0.23	n.s
M-L velocity (cm/sec)	2.07 ± 0.54	1.97 ± 0.43	n.s	0.77 ± 0.23	0.71 ± 0.23	n.s
RMS area (cm^2)	2.69 ± 0.82	3.04 ± 0.89	n.s	2.04 ± 2.15	2.06 ± 2.44	n.s

^∗∗∗𝑃<0.001.