Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis
Background: The ability to successfully perform various physical and cognitive tasks simultaneously is a required goal for older adults (OA). Brain areas such as the dorsolateral prefrontal cortex (DLPFC) are involved in cognitive processing during walking and balance tasks, with transcranial direct...
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Elsevier
2024-12-01
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| Series: | Archives of Gerontology and Geriatrics Plus |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2950307824000444 |
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| author | Jibrin Sammani USMAN Thomson Wai-Lung WONG Shamay Sheung Mei NG |
| author_facet | Jibrin Sammani USMAN Thomson Wai-Lung WONG Shamay Sheung Mei NG |
| author_sort | Jibrin Sammani USMAN |
| collection | DOAJ |
| description | Background: The ability to successfully perform various physical and cognitive tasks simultaneously is a required goal for older adults (OA). Brain areas such as the dorsolateral prefrontal cortex (DLPFC) are involved in cognitive processing during walking and balance tasks, with transcranial direct current stimulation (tDCS) used in modulating the excitability of brain cortical areas such as the DLPFC. Objectives: To evaluate the available scientific evidence on the effects of tDCS on dual-task (DT) Performance (PF) in older and young adults. Methods: Databases of PEDro, Web of Science, PubMed, Embase, and Cochrane Library were searched from inception until December 2023. RCTs were included. The risk of bias (ROB) and methodological quality of the included RCTs were assessed with the appropriate Cochrane ROB assessment tool, and PEDro scale respectively. Both narrative and quantitative synthesis were used for data analysis. Results: The result revealed that real tDCS significantly reduced: dual-task cost (DTC) on gait speed (MD = 3.68, 95 %CI-1.04 to 6.33, P = 0.006), DTC on postural sway (PS) velocity (MD = -25.49, P < 0.00001), DTC on PS area (MD = -53.96, P < 0.00001), and significantly improved DT PS velocity (SMD = -0.61, P = 0.02), with low certainty of evidence post- experiment compared to sham tDCS in OA. However, in young adults, there was no significant difference post-experiment between real and sham tDCS on DT stride time variability (P = 0.18) and DTC on stride time variability (P = 0.34) with low certainty of evidence. Conclusions: tDCS especially anodal tDCS to the DLPFC significantly improved DT PS velocity and area, and also significantly reduced DTC on gait speed, PS velocity, and area in OA. |
| format | Article |
| id | doaj-art-a6b4896f53c14b2e9527e5503ce7622a |
| institution | OA Journals |
| issn | 2950-3078 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Archives of Gerontology and Geriatrics Plus |
| spelling | doaj-art-a6b4896f53c14b2e9527e5503ce7622a2025-08-20T02:38:38ZengElsevierArchives of Gerontology and Geriatrics Plus2950-30782024-12-011410004710.1016/j.aggp.2024.100047Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysisJibrin Sammani USMAN0Thomson Wai-Lung WONG1Shamay Sheung Mei NG2Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, ChinaDepartment of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, ChinaCorresponding author.; Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, ChinaBackground: The ability to successfully perform various physical and cognitive tasks simultaneously is a required goal for older adults (OA). Brain areas such as the dorsolateral prefrontal cortex (DLPFC) are involved in cognitive processing during walking and balance tasks, with transcranial direct current stimulation (tDCS) used in modulating the excitability of brain cortical areas such as the DLPFC. Objectives: To evaluate the available scientific evidence on the effects of tDCS on dual-task (DT) Performance (PF) in older and young adults. Methods: Databases of PEDro, Web of Science, PubMed, Embase, and Cochrane Library were searched from inception until December 2023. RCTs were included. The risk of bias (ROB) and methodological quality of the included RCTs were assessed with the appropriate Cochrane ROB assessment tool, and PEDro scale respectively. Both narrative and quantitative synthesis were used for data analysis. Results: The result revealed that real tDCS significantly reduced: dual-task cost (DTC) on gait speed (MD = 3.68, 95 %CI-1.04 to 6.33, P = 0.006), DTC on postural sway (PS) velocity (MD = -25.49, P < 0.00001), DTC on PS area (MD = -53.96, P < 0.00001), and significantly improved DT PS velocity (SMD = -0.61, P = 0.02), with low certainty of evidence post- experiment compared to sham tDCS in OA. However, in young adults, there was no significant difference post-experiment between real and sham tDCS on DT stride time variability (P = 0.18) and DTC on stride time variability (P = 0.34) with low certainty of evidence. Conclusions: tDCS especially anodal tDCS to the DLPFC significantly improved DT PS velocity and area, and also significantly reduced DTC on gait speed, PS velocity, and area in OA.http://www.sciencedirect.com/science/article/pii/S2950307824000444tDCSDual-taskDual-task costOlder adultsYoung adultsDLPFC |
| spellingShingle | Jibrin Sammani USMAN Thomson Wai-Lung WONG Shamay Sheung Mei NG Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis Archives of Gerontology and Geriatrics Plus tDCS Dual-task Dual-task cost Older adults Young adults DLPFC |
| title | Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis |
| title_full | Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis |
| title_fullStr | Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis |
| title_full_unstemmed | Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis |
| title_short | Effects of transcranial direct current stimulation on dual-task performance in older and young adults: A systematic review and meta-analysis |
| title_sort | effects of transcranial direct current stimulation on dual task performance in older and young adults a systematic review and meta analysis |
| topic | tDCS Dual-task Dual-task cost Older adults Young adults DLPFC |
| url | http://www.sciencedirect.com/science/article/pii/S2950307824000444 |
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