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Psychophysiological Effects of Left-Hand Contractions on Golf-Putting and Dart-Throwing Performance.

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Title: Psychophysiological Effects of Left-Hand Contractions on Golf-Putting and Dart-Throwing Performance.
Authors: Mizuno, Kanta1 (AUTHOR), Masaki, Hiroaki2 (AUTHOR) masaki@waseda.jp
Source: Journal of Sport & Exercise Psychology. Jun2025, Vol. 47 Issue 3, p133-146. 14p.
Subject Terms: *Brain function localization, Athletic ability, Electromyography, Forearm, Golfers
Abstract: Left-hand contractions (LHCs) are considered a useful technique to facilitate athletic performance under pressure by inhibiting conscious motor control through the induction of hemispheric brain asymmetry. However, the underlying mechanisms of LHCs remain unclear. Two experiments were conducted: novice golfers (30 participants) and dart players (40 participants) completed tasks while their cortical, muscle, and cardiac activities and kinematics were recorded. Performance was measured as the distance from the target. In Study 1 (golfers), no differences in performance were observed; however, LHCs reduced the electromyography signals in the left forearm during golf putting. In Study 2 (dart players), performance did not differ between study groups. Although right-dominant hemispheric asymmetry was induced by LHCs, it may not have facilitated golf-putting and dart-throwing performances. As LHCs induced asymmetry only around the central and parietal sites, we cast doubt on the idea that LHCs inhibit the conscious processing of movements due to left-temporal activation. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Sport & Exercise Psychology is the property of Human Kinetics Publishers, Inc. 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.)
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  Label: Title
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  Data: Psychophysiological Effects of Left-Hand Contractions on Golf-Putting and Dart-Throwing Performance.
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  Data: <searchLink fieldCode="AR" term="%22Mizuno%2C+Kanta%22">Mizuno, Kanta</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Masaki%2C+Hiroaki%22">Masaki, Hiroaki</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> masaki@waseda.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Sport+%26+Exercise+Psychology%22">Journal of Sport & Exercise Psychology</searchLink>. Jun2025, Vol. 47 Issue 3, p133-146. 14p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Brain+function+localization%22">Brain function localization</searchLink><br /><searchLink fieldCode="DE" term="%22Athletic+ability%22">Athletic ability</searchLink><br /><searchLink fieldCode="DE" term="%22Electromyography%22">Electromyography</searchLink><br /><searchLink fieldCode="DE" term="%22Forearm%22">Forearm</searchLink><br /><searchLink fieldCode="DE" term="%22Golfers%22">Golfers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Left-hand contractions (LHCs) are considered a useful technique to facilitate athletic performance under pressure by inhibiting conscious motor control through the induction of hemispheric brain asymmetry. However, the underlying mechanisms of LHCs remain unclear. Two experiments were conducted: novice golfers (30 participants) and dart players (40 participants) completed tasks while their cortical, muscle, and cardiac activities and kinematics were recorded. Performance was measured as the distance from the target. In Study 1 (golfers), no differences in performance were observed; however, LHCs reduced the electromyography signals in the left forearm during golf putting. In Study 2 (dart players), performance did not differ between study groups. Although right-dominant hemispheric asymmetry was induced by LHCs, it may not have facilitated golf-putting and dart-throwing performances. As LHCs induced asymmetry only around the central and parietal sites, we cast doubt on the idea that LHCs inhibit the conscious processing of movements due to left-temporal activation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Sport & Exercise Psychology is the property of Human Kinetics Publishers, Inc. 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.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1123/jsep.2024-0237
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 133
    Subjects:
      – SubjectFull: Brain function localization
        Type: general
      – SubjectFull: Athletic ability
        Type: general
      – SubjectFull: Electromyography
        Type: general
      – SubjectFull: Forearm
        Type: general
      – SubjectFull: Golfers
        Type: general
    Titles:
      – TitleFull: Psychophysiological Effects of Left-Hand Contractions on Golf-Putting and Dart-Throwing Performance.
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            NameFull: Mizuno, Kanta
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            NameFull: Masaki, Hiroaki
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            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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              Value: 47
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            – TitleFull: Journal of Sport & Exercise Psychology
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