Table 2:

Gait and cognitive performance among genetic low and high risk (APOE ε4 carriers) groups under single-task and dual-task conditions

Parameters	Low Risk Group Single-Task Mean (SD) N=15	Low Risk Group Dual-Task Mean (SD) N=15	High Risk Group Single-Task Mean (SD) N=14	High Risk Group Dual-Task Mean (SD) N=14
Gait Parameters
Gait Speed (m/s)	1.10 (0.15)	0.97 (0.21)	1.17 (0.21)	0.91 (0.18)
Step Length (cm)	62.2 (7.3)	58.4 (7.8)	64.5 (10.2)	56.2 (6.2)
Cognitive Parameters
Memory (Accuracy)	47.1 (12.2)	40.0 (11.0)	46.2 (10.6)	42.9 (7.7)
EF Task-normal RT (ms)	675.8 (83.3)	729.4 (63.8)	704.5 (90.9)	727.1 (100.9)
EF Task-reverse RT (ms)	755.7 (126.4)	797.6 (128.8)	784.1 (92.6)	816.6 (123.1)

SD, standard deviation; Accuracy, percent of words correctly recalled from the list of 15; EF, executive function task (Go/Stop Test), values reflect response time; RT, response time.