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The Effect of Different Degrees of Ankle Dorsiflexion Restriction on the Biomechanics of the Lower Extremity in Stop‐Jumping.

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Title: The Effect of Different Degrees of Ankle Dorsiflexion Restriction on the Biomechanics of the Lower Extremity in Stop‐Jumping.
Authors: Zhang, Zanni1 (AUTHOR), Xu, Datao1,2 (AUTHOR), Gao, Xiangli1,3 (AUTHOR), Liang, Minjun1 (AUTHOR) liangminjun@nbu.edu.cn, Baker, Julien S.1,3 (AUTHOR), Gu, Yaodong1,3 (AUTHOR), MO, Fuhao (AUTHOR) fuhaomo@hnu.edu.cn
Source: Applied Bionics & Biomechanics. 8/28/2024, Vol. 2024, p1-15. 15p.
Subjects: Ankle joint, Angular velocity, Dorsiflexion, Ankle, Analysis of variance, Biomechanics, Patellofemoral joint
Abstract: Purpose. The functional status of the ankle joint is critical during dynamic movements in high‐intensity sports like basketball and volleyball, particularly when performing actions such as stopping jumps. Limited ankle dorsiflexion is associated with increased injury risk and biomechanical changes during stop‐jump tasks. Therefore, this study aims to investigate how restricting ankle dorsiflexion affects lower extremity biomechanics during the stop‐jump phase, with a focus on the adaptive changes that occur in response to this restriction. Initially, 18 participants during stop‐jumping with no wedge plate (NW), 10° wedge plate (10 W), and 20° wedge plate (20 W) using dominant leg data were collected to explore the relationship between limiting ankle mobility and lower extremity biomechanics. Following this, a musculoskeletal model was developed to simulate and calculate biomechanical data. Finally, one‐dimensional parametric statistical mapping (SPM1D) was utilized to evaluate between‐group variation in outcome variables using a one‐way repeated measures analysis of variance (ANOVA). Results. As the ankle restriction angle increased, knee external rotation angles, knee extension angular velocities, hip extension angle, and angular velocity increased and were significantly different at different ankle restriction angles (p < 0.001 and p = 0.001), coactivation of the peripatellar muscles (BF/RF and BF/VM) increased progressively, and patellofemoral joint contact force (PTF) increased progressively during the 3%–8% phase (p = 0.015). These results highlight the influence of ankle joint restriction on lower limb kinematics and patellofemoral joint loading during the stop‐jump maneuver. Conclusion. As the angle of ankle restriction increased, there was an increase in coactivation of the peripatellar muscles and an increase in PTF, possibly because a person is unable to adequately adjust their body for balance when the ankle valgus angle is restricted. The increased coactivation of the peripatellar muscles and increased patellofemoral contact force may be a compensatory response to the body's adaptation to balance adjustments. [ABSTRACT FROM AUTHOR]
Copyright of Applied Bionics & Biomechanics is the property of Wiley-Blackwell 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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  Data: The Effect of Different Degrees of Ankle Dorsiflexion Restriction on the Biomechanics of the Lower Extremity in Stop‐Jumping.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose. The functional status of the ankle joint is critical during dynamic movements in high‐intensity sports like basketball and volleyball, particularly when performing actions such as stopping jumps. Limited ankle dorsiflexion is associated with increased injury risk and biomechanical changes during stop‐jump tasks. Therefore, this study aims to investigate how restricting ankle dorsiflexion affects lower extremity biomechanics during the stop‐jump phase, with a focus on the adaptive changes that occur in response to this restriction. Initially, 18 participants during stop‐jumping with no wedge plate (NW), 10&#176; wedge plate (10 W), and 20&#176; wedge plate (20 W) using dominant leg data were collected to explore the relationship between limiting ankle mobility and lower extremity biomechanics. Following this, a musculoskeletal model was developed to simulate and calculate biomechanical data. Finally, one‐dimensional parametric statistical mapping (SPM1D) was utilized to evaluate between‐group variation in outcome variables using a one‐way repeated measures analysis of variance (ANOVA). Results. As the ankle restriction angle increased, knee external rotation angles, knee extension angular velocities, hip extension angle, and angular velocity increased and were significantly different at different ankle restriction angles (p &lt; 0.001 and p = 0.001), coactivation of the peripatellar muscles (BF/RF and BF/VM) increased progressively, and patellofemoral joint contact force (PTF) increased progressively during the 3%–8% phase (p = 0.015). These results highlight the influence of ankle joint restriction on lower limb kinematics and patellofemoral joint loading during the stop‐jump maneuver. Conclusion. As the angle of ankle restriction increased, there was an increase in coactivation of the peripatellar muscles and an increase in PTF, possibly because a person is unable to adequately adjust their body for balance when the ankle valgus angle is restricted. The increased coactivation of the peripatellar muscles and increased patellofemoral contact force may be a compensatory response to the body&#39;s adaptation to balance adjustments. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Applied Bionics &amp; Biomechanics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1155/2024/9079982
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Ankle joint
        Type: general
      – SubjectFull: Angular velocity
        Type: general
      – SubjectFull: Dorsiflexion
        Type: general
      – SubjectFull: Ankle
        Type: general
      – SubjectFull: Analysis of variance
        Type: general
      – SubjectFull: Biomechanics
        Type: general
      – SubjectFull: Patellofemoral joint
        Type: general
    Titles:
      – TitleFull: The Effect of Different Degrees of Ankle Dorsiflexion Restriction on the Biomechanics of the Lower Extremity in Stop‐Jumping.
        Type: main
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            NameFull: Zhang, Zanni
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            NameFull: Xu, Datao
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            NameFull: Gao, Xiangli
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            – D: 28
              M: 08
              Text: 8/28/2024
              Type: published
              Y: 2024
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              Value: 2024
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