. Author manuscript; available in PMC: 2022 Jan 24.

Published in final edited form as: J Alzheimers Dis. 2021;84(4):1585–1596. doi: 10.3233/JAD-210239

Table 3.

fNIRS oxygenation and gait parameters in the subsample (N = 325) during the dual-task protocol consisting of alphabet reciting (Alpha), single-task walk (Normal Walk) and walking while reciting the alphabet (WWT). MCR, Motoric Cognitive Risk Syndrome; HbO2, oxygenated Hemoglobin; NW, Normal Walking; WWT, Walk While Talking

	MCR (n = 32)	No MCR (n = 293)	P
HbO₂ levels
Alpha, mean ± SD	0.67 ± 0.79	0.69 ± 0.51	0.8
Normal walk, mean ± SD	0.26 ± 0.86	0.09 ± 0.63	0.17
WWT, mean ± SD	1.02 ± 1.25	0.66 ± 0.83	0.03
Gait parameters
NW Stride Velocity, mean ± SD (cm/s)	58.81 ± 15.05	82.44 ± 15.91	< 0.001
WWT Stride velocity, mean ± SD (cm/s)	46.72 ± 16.45	67.07 ± 17.81	< 0.001