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

Table 3

(a) Normal slip parameters in young and older individuals. (b) Slip parameters for normal and dual-task conditions. (c) Slip parameters in young and older individuals in normal and dual-task walking condition.

(a)

	Age group
	Old			Young
	Mean	SD	CV	Mean	SD	CV
Time2SDI [s]	0.046	0.014	31.492	0.051	0.008	16.180
TimeSDI2SDII [s]	0.069	0.013	18.182	0.081	0.032	39.817
TimeSDTotal [s]	0.115	0.024	20.889	0.132	0.034	25.740
SDI [mm]	38.867	23.605	60.733	33.063	13.556	41.001
SDII [mm]	116.722	43.147	36.966	154.175	88.275	57.256
SDTotal [mm]	154.713	64.122	41.446	186.863	94.645	50.650
SF MeanCCIvalue	0.081	0.043	53.626	0.093	0.111	119.722
SF PeakCCIvalue	0.938	0.809	86.261	0.828	0.396	47.874
SF Time2PeakCCIFromNSFHC [s]	0.383	0.412	107.398	0.752	0.081	10.722
NSF MeanCCIvalue	0.052	0.030	57.476	0.022	0.013	60.464
PHSV	1033.688	404.843	39.165	1062.313	321.351	30.250
NSF StanceTime [s]	0.646	0.060	9.215	0.649	0.056	8.612

(b)

	Dual-task slip		Normal walk slip		value
	Mean	SD	Mean	SD
Time2SDI [s]	0.07	0.00	0.05	0.01	0.047
TimeSDI2SDII [s]	0.08	0.01	0.08	0.03	1
TimeSDTotal [s]	0.14	0.01	0.13	0.03	0.46
SDI [mm]	17.65	3.89	35.00	16.65	0.19
SDII [mm]	87.09	20.68	141.69	76.20	0.43
SDTotal [mm]	104.20	16.38	176.15	84.10	0.34
SF MeanCCIvalue	0.06	0.05	0.09	0.09	0.69
SF PeakCCIvalue	0.36	0.01	0.86	0.53	0.24
SFTime2PeakCCIFromNSFHC [s]	0.87	0.07	0.63	0.29	0.13
NSF MeanCCIvalue	0.03	0.03	0.03	0.02	0.90
PHSV [mm/s]	699.23	138.99	1052.77	332.59	0.22
NSF StanceTime [s]	0.75	0.02	0.65	0.05	0.03

(c)

	Age group
	Old		Young
	Slip condition		Slip condition
	DTS	NS	DTS	NS
	Mean	Mean	Mean	Mean
Time2SDI [s]	0.067	0.046	0.067	0.051
TimeSDI2SDII [s]	0.083	0.069	0.067	0.081
TimeSDTotal [s]	0.150	0.115	0.133	0.132
SDI [mm]	14.903	38.867	20.406	33.063
SDII [mm]	101.71	116.722	72.463	154.175
SDTotal [mm]	115.78	154.713	92.622	186.863
SF MeanCCIvalue	0.093	0.081	0.021	0.093
SF PeakCCIvalue	0.368	0.938	0.355	0.828
SFTime2PeakCCIFromNSFHC [s]	0.917	0.383	0.817	0.752
NSF MeanCCIvalue	0.011	0.052	0.059	0.022
PHSV [mm/s]	797.51	1033.688	600.95	1062.313
NSF StanceTime [s]	0.767	0.646	0.742	0.649

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