Dual-task performance in seniors with mild cognitive impairment and Alzheimer’s disease: a longitudinal study
Keywords:Alzheimer’s disease, Dual task, Cognitive Impairment, Older adults, Timed Up and Go test
BACKGROUND: Motor performance in older adults with cognitive impairment is worse under dual task conditions, increasing the risk of falls. However, there is a lack of studies that analyze this performance over time in people with different cognitive profiles.
AIM: This study aimed to compare the performance of an isolated task and a dual task in people with preserved cognition (PrC), mild cognitive impairment (MCI) and Alzheimer`s disease (AD).
METHOD: Data were collected on two occasions (T1; T2), thirty-two months apart. Participants (n=51) were separated between groups: PrC (n=22), MCI (n=19) and AD (n=10). They were analyzed in three situations: 1) isolated motor task - Timed up and go test (TUGT); 2) cognitive-motor test (CMT)– dialing on the phone; 3) dual task (DT). To compare the performance of the dual task between the groups, delta was calculated and the ANCOVA test was applied.
RESULTS: Although the cost of the dual task was not significantly different over time in any group, we found increases in the time required to complete the TUGT (p<0.01) and TUGT-DT (p>0.01) after 32 months in the AD group and a reduction in time in the PrC and MCI groups. A greater number of steps in the TUGT-DT (p<0.01) and an increase in cadence in the TUGT (p=0.01) and TUGT-DT (p<0.01) were also found in the AD group.
CONCLUSION:We suggest that a more functional task, such as walking while typing on the phone, may be considered a more sensitive way of assessing older adults with AD.
How to Cite
Copyright (c) 2023 Danielle Silva
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors must declare that the work submitted is their own and that copyright has not been breached in seeking its publication. If the manuscript includes work previously published elsewhere, it is the author(s) responsibility to obtain permission to use it and to indicate that such permission has been granted.
Authors retain the copyright of their paper and grant the Brazilian Journal of Motor Behavior (BJMB) the right to first publish the work under a Creative Commons Attribution-NonCommercial-NoDerivatives license (CC BY-NC-ND). This license allows users to share the paper given the appropriate credit to the author and source and does not allow commercial uses and derivative materials to be produced.