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Quantifying Coordination between Agonist and Antagonist Elbow Muscles during Backhand Crosscourt Shots in Adult Female Squash Players

Author

Listed:
  • Abdel-Rahman Akl

    (Faculty of Physical Education-Abo Qir, Alexandria University, Alexandria 21913, Egypt)

  • Amr Hassan

    (Department of Sports Training, Faculty of Sports Education, Mansoura University, Mansoura 35516, Egypt)

  • Helal Elgizawy

    (Faculty of Physical Education-Abo Qir, Alexandria University, Alexandria 21913, Egypt)

  • Markus Tilp

    (Institute of Human Movement Science, Sport and Health, University of Graz, A-8010 Graz, Austria)

Abstract

The purpose of this study was to quantify the coordination between agonist and antagonist elbow muscles during squash backhand crosscourt shots in adult female players. Ten right-handed, international-level, female squash players participated in the study. The electrical muscle activity of two right elbow agonist/antagonist muscles, the biceps brachii and triceps brachii, were recorded using a surface EMG system, and processed using the integrated EMG to calculate a co-activation index (CoI) for the preparation phase, the execution phase, and the follow-through phase. A significant effect of the phases on the CoI was observed. Co-activation was significantly different between the follow-through and the execution phase (45.93 ± 6.00% and 30.14 ± 4.11%, p < 0.001), and also between the preparation and the execution phase (44.74 ± 9.88% and 30.14 ± 4.11%, p < 0.01). No significant difference was found between the preparation and the follow-through phase ( p = 0.953). In conclusion, the co-activation of the elbow muscles varies within the squash backhand crosscourt shots. The highest level of co-activation was observed in the preparation phase and the lowest level of co-activation was observed during the execution. The co-activation index could be a useful method for the interpretation of elbow muscle co-activity during a squash backhand crosscourt shot.

Suggested Citation

  • Abdel-Rahman Akl & Amr Hassan & Helal Elgizawy & Markus Tilp, 2021. "Quantifying Coordination between Agonist and Antagonist Elbow Muscles during Backhand Crosscourt Shots in Adult Female Squash Players," IJERPH, MDPI, vol. 18(18), pages 1-9, September.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:18:p:9825-:d:638094
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    References listed on IDEAS

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    1. Thomas Perri & Kevin Ian Norton & Clint Ronald Bellenger & Alistair Philip Murphy, 2018. "Training loads in typical junior-elite tennis training and competition: implications for transition periods in a high-performance pathway," International Journal of Performance Analysis in Sport, Taylor & Francis Journals, vol. 18(2), pages 327-338, March.
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