Effects of aging on motor control strategies during bimanual isometric force control

Yan Jin, Ji Won Seong, Young Chae Cho, Bum Chul Yoon

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Aging-induced degeneration of the neuromuscular system would result in deteriorated complex muscle force coordination and difficulty in executing daily activities that require both hands. The aim of this study was to provide a basic description of how aging and dual-task activity would affect the motor control strategy during bimanual isometric force control in healthy adults. In total, 17 young adults (aged 25.1 ± 2.4 years) and 14 older adults (aged 72.6 ± 3.4 years) participated in the study. The subjects were instructed to press both hands simultaneously to match the 1 Hz sine curve force under two conditions (with or without calculation) with continuous visual feedback. Differences in bimanual motor synergy, bimanual coordination, force accuracy, force variability, and calculation speed were compared. This study found that the specific motor control strategy of older adults involved a decreased bimanual force control ability with both increased VUCM and VORT, and was not influenced by dual tasking. These findings might have implications for establishing interventions for aging-induced hand force control deficits.

    Original languageEnglish
    Pages (from-to)267-275
    Number of pages9
    JournalAdaptive Behavior
    Volume27
    Issue number4
    DOIs
    Publication statusPublished - 2019 Aug 1

    Bibliographical note

    Funding Information:
    The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by a grant from a mid-level research project through the National Research Foundation of Korea (2017R1C1B5018171), funded by the Ministry of Health.

    Funding Information:
    The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by a grant from a midlevel research project through the National Research Foundation of Korea (2017R1C1B5018171), funded by the Ministry of Health.

    Publisher Copyright:
    © The Author(s) 2019.

    Keywords

    • Aging
    • bimanual force matching
    • bimanual motor synergy
    • dual task
    • uncontrolled manifold

    ASJC Scopus subject areas

    • Experimental and Cognitive Psychology
    • Behavioral Neuroscience

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