How cognitive loads modulate the postural control of older women with low back pain?

BMC Geriatrics

Table 3 Summary of F and P values for four COP parameters

Independent variable	AP velocity		ML velocity		Sway area		Sway length
Independent variable	F	P	F	P	F	P	F	P
Main effect
Group	49.260	< 0.001	115.997	< 0.001	82.414	< 0.001	48.600	< 0.001
Postural difficulty	8.254	0.004	3.920	< 0.001	1.662	0.207	3.128	0.069
Cognitive difficulty	0.192	0.778	2.554	0.085	0.518	0.582	0.415	0.653
Interaction effect
Group × postural difficulty	6.862	0.008	17.359	< 0.001	9.142	0.003	7.198	0.005
Group × cognitive difficulty	2.994	0.070	3.448	0.038	15.065	< 0.001	5.346	0.007
Postural × cognitive difficulty	0.527	0.654	1.001	0.387	0.536	0.610	1.682	0.183
Group × postural × cognitive difficulty	0.794	0.494	0.566	0.609	0.596	0.575	3.044	0.040

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