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The Acute Impact of External Compression on Back Squat Performance in Competitive Athletes

Author

Listed:
  • Mariola Gepfert

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

  • Michal Krzysztofik

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

  • Maciej Kostrzewa

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

  • Jakub Jarosz

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

  • Robert Trybulski

    (Department of Medical Sciences, The Wojciech Korfanty School of Economics, 40-065 Katowice, Poland
    Provita Zory Medical Center, 44-240 Zory, Poland)

  • Adam Zajac

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

  • Michal Wilk

    (Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland)

Abstract

The aim of the present study was to evaluate the effects of external compression with blood flow restriction on power output and bar velocity changes during the back-squat exercise (SQ). The study included 10 judo athletes (age = 28.4 ± 5.8 years; body mass = 81.3 ± 13.1 kg; SQ one-repetition maximum (1-RM) 152 ± 34 kg; training experience 10.7 ± 2.3 years). Methods: The experiment was performed following a randomized crossover design, where each participant performed three different exercise protocols: (1) control, without external compression (CONT); (2) intermittent external compression with pressure of 100% arterial occlusion pressure (AOP) (EC-100); and (3) intermittent external compression with pressure of 150% AOP (EC-150). To assess the differences between conditions, the participants performed 3 sets of 3 repetitions of the SQ at 70% 1-RM. The differences in peak power output (PP), mean power output (MP), peak bar velocity (PV), and mean bar velocity (MV) between the three conditions were examined using repeated measures two-way ANOVA. Results: The post hoc analysis for the main effect of conditions showed a significant increase in PP ( p = 0.03), PV ( p = 0.02), MP ( p = 0.04), and MV ( p = 0.03), for the EC-150, compared to the CONT. Furthermore, a statistically significant increase in PP ( p = 0.04), PV ( p = 0.03), MP ( p = 0.02), and MV ( p = 0.01) were observed for the EC-150 compared to EC-100. There were no significant changes in PP, PV, MP, and MV, between EC-100 and CONT conditions. Conclusion: The results indicate that the use of extremely high-pressure external compression (150% AOP) during high-loaded (70% 1-RM) lower limb resistance exercise elicits an acute increase in power output and bar velocity.

Suggested Citation

  • Mariola Gepfert & Michal Krzysztofik & Maciej Kostrzewa & Jakub Jarosz & Robert Trybulski & Adam Zajac & Michal Wilk, 2020. "The Acute Impact of External Compression on Back Squat Performance in Competitive Athletes," IJERPH, MDPI, vol. 17(13), pages 1-11, June.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:13:p:4674-:d:377842
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    Citations

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    Cited by:

    1. Michal Krzysztofik & Rafal Kalinowski & Robert Trybulski & Aleksandra Filip-Stachnik & Petr Stastny, 2021. "Enhancement of Countermovement Jump Performance Using a Heavy Load with Velocity-Loss Repetition Control in Female Volleyball Players," IJERPH, MDPI, vol. 18(21), pages 1-10, November.
    2. Lee J. Winchester & Morgan T. Blake & Abby R. Fleming & Elroy J. Aguiar & Michael V. Fedewa & Michael R. Esco & Ryan L. Earley, 2022. "Hemodynamic Responses to Resistance Exercise with Blood Flow Restriction Using a Practical Method Versus a Traditional Cuff-Inflation System," IJERPH, MDPI, vol. 19(18), pages 1-13, September.
    3. Krzysztof Fostiak & Marta Bichowska & Robert Trybulski & Bartosz Trabka & Michal Krzysztofik & Nicholas Rolnick & Aleksandra Filip-Stachnik & Michal Wilk, 2022. "Acute Effects of Ischemic Intra-Conditioning on 30 m Sprint Performance," IJERPH, MDPI, vol. 19(19), pages 1-10, October.

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