Dual-Task Does Not Increase Slip and Fall Risk in Healthy Young and Older Adults during Walking

Table 2

(a) Dual-task changes in gait parameters. (b) General gait parameters for younger and older population for normal and dual-tasking types of walking.

(a)

	Dual task walk		Normal walk		value
	Mean	SD	Mean	SD
Step length [mm]	703.79	39.25	750.89	47.87	0.004
Step width [mm]	119.10	27.67	115.92	25.45	0.69
HCV [mm/s]	1191.20	765.06	1029.41	193.01	0.55
GCT [s]	1.12	0.06	1.08	0.06	0.075
DST [s]	0.26	0.03	0.24	0.03	0.004
Gait speed [m/s]	1.11	0.16	1.17	0.14	0.06
SST [s]	0.70	0.04	0.66	0.05	0.013
Step time [s]	0.55	0.04	0.53	0.04	0.067
Swing time [s]	0.43	0.03	0.42	0.02	0.54
Toe clearance	16.40	8.29	16.29	7.62	0.96
RCOF	0.19	0.03	0.20	0.03	0.08
TCOF	0.07	0.02	0.07	0.01	0.90

(b)

	Age group
	Old						Young
	Condition						Condition
	DTW			NW			DTW			NW
	Mean	SD	CV	Mean	SD	CV	Mean	SD	CV	Mean	SD	CV
Step length [mm]	702.92	48.75	6.94	739.10	57.89	7.83	704.26	35.36	5.02	757.24	42.76	5.65
Step width [mm]	117.89	21.29	18.06	113.16	20.25	17.89	119.74	31.37	26.20	117.41	28.53	24.30
HCV [mm/s]	993.76	516.51	51.98	1048.44	195.34	18.63	1297.52	870.85	67.12	1019.16	198.94	19.52
GCT [s]	1.11	0.07	6.47	1.08	0.07	6.17	1.13	0.06	5.12	1.08	0.06	5.88
DST [s]	0.27	0.03	10.60	0.22	0.02	9.48	0.26	0.03	11.84	0.24	0.03	11.99
SST [s]	0.68	0.05	7.11	0.65	0.04	5.72	0.71	0.04	5.85	0.66	0.05	7.62
Step time [s]	0.55	0.04	8.09	0.53	0.04	7.80	0.56	0.03	6.22	0.53	0.03	6.59
Swing time [s]	0.42	0.02	5.71	0.43	0.03	5.90	0.44	0.03	6.60	0.42	0.02	5.54
Toe clearance [mm]	18.66	12.43	66.62	19.58	5.94	30.31	15.18	5.19	34.18	14.52	8.03	55.32
RCOF	0.17	0.02	12.92	0.19	0.02	9.05	0.19	0.03	14.25	0.20	0.03	15.24
TCOF	0.07	0.01	17.59	0.07	0.01	17.57	0.07	0.02	23.70	0.08	0.01	19.43
Gait speed [m/s]	1.08	0.19	17.58	1.17	0.16	13.68	1.15	0.14	12.17	1.18	0.12	10.17

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