TABLE 1.

Statistics (R² and P values) of the linear regression models of the balance parameters with age as predictor for the four phases.

	Fast Baseline		Slow Baseline			Initial Perturbation		Early Change
	R2	P	R2	P		R2	P	R2	P
AP MoS
Left	0.0007	0.81	0.0003	0.88	Fast	0.05	0.05	0.08	0.02
Right	0.02	0.27	0.006	0.52	Slow	0.06	0.03	0.10	0.005
Step length
Left	0.01	0.35	0.005	0.54	Fast	0.07	0.02	0.19	<0.001
Right	0.00002	0.97	0.02	0.22	Slow	0.13	0.0013	0.15	<0.001
ML MoS
Left	0.07	0.02	0.12	0.003	Fast	0.03	0.17	0.09	0.008
Right	0.02	0.18	0.04	0.07	Slow	0.16	<0.001	0.22	<0.001
Single support
Left	0.14	0.00109	0.09	0.008	Fast	0.08	0.01	0.26	<0.001
Right	0.13	0.0015	0.04	0.07	Slow	0.17	<0.001	0.31	<0.001
Double support
Left	0.04	0.10	0.15	<0.001	Fast	0.09	0.008	0.22	<0.001
Right	0.01	0.34	0.10	0.007	Slow	0.18	<0.001	0.21	<0.001
Step width	0.04	0.08	0.05	0.06	—	0.03	0.14	0.07	0.03
Cadence	0.15	<0.001	0.14	<0.001	—	0.23	<0.001	0.36	<0.001

R² and P values are highlighted in bold if the regression line was significant after Bonferroni correction (α = 0.001042). During the fast and slow baseline, the variables were calculated for the left and right leg. During initial perturbation and early change, the variables were calculated for the fast and slow leg.