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. Author manuscript; available in PMC: 2019 May 5.
Published in final edited form as: J Alzheimers Dis. 2018;64(4):1137–1148. doi: 10.3233/JAD-180016

Fig. 1.

Fig. 1.

Dual-task interference on gait speed among cognitively normal older adults at low versus high genetic risk of AD. A) The bar graph illustrates mean gait speed of each group in the single-task (blue) and dual-task (red) condition. Both risk groups exhibited slower mean gait speed during the dual-task condition, but participants in the high risk group exhibited larger mean reductions in gait speed, compared to the low risk group. B) The dual-task effect (DTE) on gait speed is calculated as: [(dual-task gait speed − single-task gait speed)/single-task gait speed] × 100%. This box plot displays the range of DTE values calculated for all participants.