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Ankle bracing's effects during a modified agility task: analysis of sEMG, impulse, and time to complete using a crossover, repeated measures design.

This study explored the effects of no braces, softshell (AE), and semi-rigid (T1) ankle braces on time to complete a modified agility task, as well as lower extremity muscle activity and impulse during the change of direction component of the task. Thirty-nine healthy, active individuals completed a...

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Published in:Sports Biomechanics Vol. 22; no. 8; pp. 1063 - 1078
Main Authors: Henderson, Zachariah J., Sanzo, Paolo, Zerpa, Carlos, Kivi, Derek
Format: research Journal Article
Published: Taylor & Francis Ltd Aug2023
Online Access:View this record in EBSCOhost
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      jtl: Sports Biomechanics
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      dt: Aug2023
      vid: 22
      iid: 8
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      pub: Taylor & Francis Ltd
      place: Philadelphia, Pennsylvania
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        10.1080/14763141.2020.1778777
        164784363
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        atl: Ankle bracing's effects during a modified agility task: analysis of sEMG, impulse, and time to complete using a crossover, repeated measures design.
      aug:
        au:
          Henderson, Zachariah J.
          Sanzo, Paolo
          Zerpa, Carlos
          Kivi, Derek
        affil: School of Kinesiology, Lakehead University, Thunder Bay, Canada
      sug:
        subj:
          Foot Orthoses
          Ankle
          Time Factors Evaluation
          Lower Extremity Physiology
          Muscle, Skeletal Physiology
          Agility
          Task Performance and Analysis
          Reaction Time Evaluation
          Human
          Electromyography
          Descriptive Statistics
          Post Hoc Analysis
          Confidence Intervals
      ab: This study explored the effects of no braces, softshell (AE), and semi-rigid (T1) ankle braces on time to complete a modified agility task, as well as lower extremity muscle activity and impulse during the change of direction component of the task. Thirty-nine healthy, active individuals completed a modified agility task under the three brace conditions. Time to complete the modified agility task, along with mean surface electromyographic activity (sEMG) and impulse during the deceleration and propulsive phases of the task were measured. There were no significant differences across conditions with respect to sEMG or impulse measures during the deceleration or propulsive phases. There was a significant change in time to complete the modified agility task, F(2,76) = 17.242, p< 0.001, ηp2 = 0.312. Post-hoc analysis revealed a significant increase in time to complete the modified agility task when wearing the AE (0.16 (95% CI, 0.062 to 0.265) seconds, p< 0.001) and T1 (0.20 (95% CI, 0.113 to 0.286) seconds, p< 0.001) ankle braces compared to no braces. It appears that performance on a modified agility task may be diminished when wearing ankle braces, although sEMG activity and impulse are unaffected.
      pubtype: Academic Journal
      doctype:
        research
        Journal Article
      ougenre: Article
    language: English
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