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Lower-Limb Muscle Contractile Properties, Explosive Power and the Subjective Response of Elite Soccer Players to the COVID-19 Lockdown

Author

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  • Armin H. Paravlic

    (Faculty of Sport, Institute of Kinesiology, University of Ljubljana, 1000 Ljubljana, Slovenia
    Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia
    Faculty of Sports Studies, Masaryk University, 625 00 Brno, Czech Republic)

  • Bostjan Simunic

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia)

  • Sasa Pisot

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia)

  • Matej Kleva

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia)

  • Kaja Teraz

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia)

  • Matjaz Vogrin

    (Faculty of Medicine, Institute of Sports Medicine, University of Maribor, 2000 Maribor, Slovenia)

  • Uros Marusic

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia
    Department of Health Science, Alma Mater Europaea—ECM, 2000 Maribor, Slovenia)

  • Rado Pisot

    (Science and Research Centre Koper, Institute for Kinesiology Research, 6000 Koper, Slovenia)

Abstract

The present study examined the effects of the lockdown period on basic anthropometric measures, countermovement jumping performance, skeletal muscle contractile properties derived from tensiomyography (TMG), injury incidence, and self-assessed general well-being in elite soccer players. A total of 266 players were assessed before (PRE) and 32 players were reassessed 11 days after (POST) the COVID-19 period. Significant changes in the TMG parameters were observed POST compared to PRE: contraction time (Tc) increased from 6% to 50% in vastus lateralis [VL] ( p = 0.009) and biceps femoris [BF] ( p < 0.001), respectively; whereas radial displacement (Dm) increased for 19% in BF ( p = 0.036) and 17% in VL ( p < 0.001), respectively. Jumping performance remained unchanged from PRE to POST In addition, athletes rated the lockdown period as a positive event and felt psychologically better during the lockdown, primarily because they spent more time with family members and friends. Although there were no differences in any of the variables describing lower limb muscle power following the two-month lockdown, the altered contractile properties of the assessed muscles suggest suboptimal conditioning of the football players.

Suggested Citation

  • Armin H. Paravlic & Bostjan Simunic & Sasa Pisot & Matej Kleva & Kaja Teraz & Matjaz Vogrin & Uros Marusic & Rado Pisot, 2022. "Lower-Limb Muscle Contractile Properties, Explosive Power and the Subjective Response of Elite Soccer Players to the COVID-19 Lockdown," IJERPH, MDPI, vol. 19(1), pages 1-13, January.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:1:p:474-:d:716213
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    1. Achraf Ammar & Hamdi Chtourou & Omar Boukhris & Khaled Trabelsi & Liwa Masmoudi & Michael Brach & Bassem Bouaziz & Ellen Bentlage & Daniella How & Mona Ahmed & Patrick Mueller & Notger Mueller & Hsen , 2020. "COVID-19 Home Confinement Negatively Impacts Social Participation and Life Satisfaction: A Worldwide Multicenter Study," IJERPH, MDPI, vol. 17(17), pages 1-17, August.
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