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Effects of Muscular Fatigue on the Performance of Handgrip Tasks During Force Generation and Relaxation.

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Title: Effects of Muscular Fatigue on the Performance of Handgrip Tasks During Force Generation and Relaxation.
Authors: Ohtaka, Chiaki (AUTHOR), Yanagita, Kana (AUTHOR), Nakata, Hiroki (AUTHOR), Fujiwara, Motoko (AUTHOR), Shibasaki, Manabu (AUTHOR)
Source: Journal of Motor Behavior. 2025, Vol. 57 Issue 4, p333-344. 12p.
Subjects: Muscle fatigue, Muscle contraction, Task forces, Electromyography, Task performance
Abstract: This study investigated the effects of muscular fatigue on the accuracy of force control in the respective generation and relaxation phases while performing an isometric handgrip force-tracking task. Participants were instructed to track a target line moving upward and downward, corresponding to 0 to 30% of maximum voluntary contraction (MVC) at a constant for 7 s. Eight sets of 25 continuous trials each were conducted. The force-tracking accuracy and electromyography (EMG) of extensor carpi radialis (ECR) and flexor carpi ulnaris (FCU) were evaluated. The force-tracking accuracy was compared between the phase (upward: generation and downward: relaxation), set (first and eighth), and within-set periods (early: 1–5, middle: 10–15, and late: 20–25 trials). The force-tracking accuracy at the middle and late periods significantly declined compared to the early period in the relaxation phase. Integrated EMG of ECR and FCU was significantly larger in the generation than in the relaxation phase. The integrated EMG of FCU in the generation phase was significantly different between the periods. Furthermore, the median frequency of FCU was significantly different between the phases and periods. These findings suggest that the effects of muscular fatigue on force control varied between generation and relaxation due to the amount and frequency band of muscle activity. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Motor Behavior is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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DbLabel: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Effects of Muscular Fatigue on the Performance of Handgrip Tasks During Force Generation and Relaxation.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ohtaka%2C+Chiaki%22">Ohtaka, Chiaki</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yanagita%2C+Kana%22">Yanagita, Kana</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nakata%2C+Hiroki%22">Nakata, Hiroki</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fujiwara%2C+Motoko%22">Fujiwara, Motoko</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shibasaki%2C+Manabu%22">Shibasaki, Manabu</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Motor+Behavior%22">Journal of Motor Behavior</searchLink>. 2025, Vol. 57 Issue 4, p333-344. 12p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Muscle+fatigue%22">Muscle fatigue</searchLink><br /><searchLink fieldCode="DE" term="%22Muscle+contraction%22">Muscle contraction</searchLink><br /><searchLink fieldCode="DE" term="%22Task+forces%22">Task forces</searchLink><br /><searchLink fieldCode="DE" term="%22Electromyography%22">Electromyography</searchLink><br /><searchLink fieldCode="DE" term="%22Task+performance%22">Task performance</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigated the effects of muscular fatigue on the accuracy of force control in the respective generation and relaxation phases while performing an isometric handgrip force-tracking task. Participants were instructed to track a target line moving upward and downward, corresponding to 0 to 30% of maximum voluntary contraction (MVC) at a constant for 7 s. Eight sets of 25 continuous trials each were conducted. The force-tracking accuracy and electromyography (EMG) of extensor carpi radialis (ECR) and flexor carpi ulnaris (FCU) were evaluated. The force-tracking accuracy was compared between the phase (upward: generation and downward: relaxation), set (first and eighth), and within-set periods (early: 1–5, middle: 10–15, and late: 20–25 trials). The force-tracking accuracy at the middle and late periods significantly declined compared to the early period in the relaxation phase. Integrated EMG of ECR and FCU was significantly larger in the generation than in the relaxation phase. The integrated EMG of FCU in the generation phase was significantly different between the periods. Furthermore, the median frequency of FCU was significantly different between the phases and periods. These findings suggest that the effects of muscular fatigue on force control varied between generation and relaxation due to the amount and frequency band of muscle activity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Motor Behavior is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=186641564
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/00222895.2025.2496150
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 333
    Subjects:
      – SubjectFull: Muscle fatigue
        Type: general
      – SubjectFull: Muscle contraction
        Type: general
      – SubjectFull: Task forces
        Type: general
      – SubjectFull: Electromyography
        Type: general
      – SubjectFull: Task performance
        Type: general
    Titles:
      – TitleFull: Effects of Muscular Fatigue on the Performance of Handgrip Tasks During Force Generation and Relaxation.
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            NameFull: Ohtaka, Chiaki
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            NameFull: Yanagita, Kana
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            NameFull: Nakata, Hiroki
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            NameFull: Fujiwara, Motoko
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            NameFull: Shibasaki, Manabu
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            – D: 01
              M: 07
              Text: 2025
              Type: published
              Y: 2025
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              Value: 57
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            – TitleFull: Journal of Motor Behavior
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