Table 1 Descriptive statistics and effect sizes.

	Normal walking			Metronome Walking			Effect size	Confidence intervals
	N	Mean	SD	N	Mean	SD	g (paired)	CI low	CI high
Basic gait parameters
Walking speed (m/s)	58	1.27	0.24	58	1.26	0.24	0.02	− 0.06	0.10
Step frequency (Hz, step/s)	59	1.89	0.15	59	1.90	0.15	0.03	− 0.02	0.09
Short-term attractor divergence
LDS-AP	59	0.99	0.45	58	1.00	0.47	0.02	− 0.26	0.29
LDS-V	59	1.04	0.51	58	1.15	0.55	0.18	− 0.12	0.50
LDS-ML	59	1.29	0.32	58	1.25	0.34	− 0.12	− 0.37	0.15
Long-term attractor divergence
ACI-N	59	0.028	0.010	58	0.020	0.010	− 0.82	− 1.22	− 0.47
ACI-AP	59	0.022	0.009	58	0.016	0.008	− 0.74	− 1.17	− 0.33
ACI-V	59	0.027	0.010	58	0.020	0.010	− 0.78	− 1.18	− 0.42
ACI-ML	59	0.018	0.009	58	0.015	0.010	− 0.37	− 0.65	− 0.12
Correlation structure (foot sensor)
Alpha (DFA)	60	0.74	0.17	60	0.39	0.22	− 1.75	− 2.59	− 1.09

Sample sizes (N), means, standard deviations (SD), and standardized effect sizes (Hedges’ g) with 99% confidence intervals (CI) of gait parameters measured from lumbar triaxial accelerometer (local dynamic stability LDS, attractor complexity index ACI) and from foot accelerometer (scaling exponent alpha, detrended fluctuation analysis DFA). N, norm; AP, anteroposterior; V, vertical; ML, mediolateral. Significant results are indicated in bold (p < 0.01).

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