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http://hdl.handle.net/10397/93225
Title: | Does an externally focused dual-task mitigate real-time conscious postural control in older adults? | Authors: | Li, DKT Mak, TCT Wong, TWL |
Issue Date: | 2021 | Source: | Experimental aging research, 2021, v. 48, no. 3, p. 295-310 | Abstract: | Objectives:
This study first examined whether real-time conscious postural control (reinvestment) and postural sway increase with different postural difficulties on a compliant surface among older adults. The second objective was to investigate the effect of an externally focused dual-task on real-time reinvestment and postural sway under a relatively challenging standing position. Method: Thirty-two community-dwelling older adults (mean age = 72.09, SD = 4.18 years) were recruited. Participants performed balance tasks in four standing positions in a randomized order on a balance foam pad. The four positions included wide-based standing on foam (WBF), narrow-based standing on foam (NBF), tandem-based standing on foam (TBF) and tandem-based standing on foam with an externally focused dual-task (TBFE). Throughout all the balance tasks, participants’ real-time reinvestment and body sway were indicated by the Alpha2 T3-Fz Electroencephalogram (EEG) coherence and the total sway length (TSL), respectively. Results and Discussion: Our results revealed no significant difference in real-time reinvestment among different standing positions while postural sway increased from WBF to NBF and reduced from NBF to TBF. We also demonstrated that when performing a relatively challenging standing task on a compliant surface, an externally focused dual-task (TBFE), compared to a baseline single task (TBF), can neither mitigate real-time reinvestment nor improve balance performance in community-dwelling older adults with good balance capability. Potential explanations and implications are discussed. |
Publisher: | Taylor & Francis Inc. | Journal: | Experimental Aging Research | ISSN: | 0361-073X | EISSN: | 1096-4657 | DOI: | 10.1080/0361073X.2021.1982343 | Rights: | © 2021 Taylor & Francis Group, LLC This is an Accepted Manuscript of an article published by Taylor & Francis in Experimental Aging Research on 30 Sep 2021 (published online), available at: http://www.tandfonline.com/10.1080/0361073X.2021.1982343. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Mak_Does_Externally_Focused.pdf | Pre-Published version | 832.01 kB | Adobe PDF | View/Open |
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