Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry

Abstract The majority of motor tasks in sports are executed unilaterally, however research on the impact of unilateral conditioning activities (CAs) on both unilateral and bilateral sports tasks remains limited. Therefore, the aim of this study was to evaluate the effects of isometric and plyometric...

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Main Authors: Jonatan Helbin, Agata Latocha, Michał Spieszny, Paulina Ewertowska, Michał Wilk, Michał Krzysztofik
Format: Article
Language:English
Published: Nature Portfolio 2025-03-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-88580-6
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author Jonatan Helbin
Agata Latocha
Michał Spieszny
Paulina Ewertowska
Michał Wilk
Michał Krzysztofik
author_facet Jonatan Helbin
Agata Latocha
Michał Spieszny
Paulina Ewertowska
Michał Wilk
Michał Krzysztofik
author_sort Jonatan Helbin
collection DOAJ
description Abstract The majority of motor tasks in sports are executed unilaterally, however research on the impact of unilateral conditioning activities (CAs) on both unilateral and bilateral sports tasks remains limited. Therefore, the aim of this study was to evaluate the effects of isometric and plyometric unilateral CAs on unilateral and bilateral jumping performance. The study involved fifteen resistance-trained males who participated in three experimental sessions: 3 sets of 3 s of maximum isometric single-leg quarter-squats or 3 sets of 5 single-leg tuck jumps as CAs, along with a control condition without CA. Measurements of single-leg jump (SLJ) and countermovement jump (CMJ) were taken 5 min before, and at approximately the 3th, 6th and 9th minute after the CA. The analysis did not show any statistically significant interactions nor a main effect of condition or time (p > 0.05) for CMJ height and relative peak power. However, a main effect of time (p = 0.02) to increase non-dominant SLJ height from baseline to best post-CA time-point was found (+ 0.8 ± 2.5 cm; Cohen’s d = 0.22). Neither isometric nor plyometric CAs significantly affected CMJ and SLJ performance. The observed increase in jump height for the non-dominant leg is likely due to motor learning rather than the effects of the applied CAs.
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spelling doaj-art-0f97d5ade62948f88ef53d5a24e801612025-08-20T03:40:46ZengNature PortfolioScientific Reports2045-23222025-03-011511910.1038/s41598-025-88580-6Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetryJonatan Helbin0Agata Latocha1Michał Spieszny2Paulina Ewertowska3Michał Wilk4Michał Krzysztofik5Nutrition and Sports Performance Research Group, The Jerzy Kukuczka Academy of Physical Education in KatowiceNutrition and Sports Performance Research Group, The Jerzy Kukuczka Academy of Physical Education in KatowiceInstitute of Sports Sciences, University of Physical Culture in KrakowDepartment of Physical Culture, Gdansk University of Physical Education and SportInstitute of Sports Sciences, The Jerzy Kukuczka Academy of Physical Education in KatowiceNutrition and Sports Performance Research Group, The Jerzy Kukuczka Academy of Physical Education in KatowiceAbstract The majority of motor tasks in sports are executed unilaterally, however research on the impact of unilateral conditioning activities (CAs) on both unilateral and bilateral sports tasks remains limited. Therefore, the aim of this study was to evaluate the effects of isometric and plyometric unilateral CAs on unilateral and bilateral jumping performance. The study involved fifteen resistance-trained males who participated in three experimental sessions: 3 sets of 3 s of maximum isometric single-leg quarter-squats or 3 sets of 5 single-leg tuck jumps as CAs, along with a control condition without CA. Measurements of single-leg jump (SLJ) and countermovement jump (CMJ) were taken 5 min before, and at approximately the 3th, 6th and 9th minute after the CA. The analysis did not show any statistically significant interactions nor a main effect of condition or time (p > 0.05) for CMJ height and relative peak power. However, a main effect of time (p = 0.02) to increase non-dominant SLJ height from baseline to best post-CA time-point was found (+ 0.8 ± 2.5 cm; Cohen’s d = 0.22). Neither isometric nor plyometric CAs significantly affected CMJ and SLJ performance. The observed increase in jump height for the non-dominant leg is likely due to motor learning rather than the effects of the applied CAs.https://doi.org/10.1038/s41598-025-88580-6Post-activation performance enhancementPower outputIsometricOvercomingPlyometric
spellingShingle Jonatan Helbin
Agata Latocha
Michał Spieszny
Paulina Ewertowska
Michał Wilk
Michał Krzysztofik
Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
Scientific Reports
Post-activation performance enhancement
Power output
Isometric
Overcoming
Plyometric
title Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
title_full Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
title_fullStr Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
title_full_unstemmed Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
title_short Acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
title_sort acute effects of unilateral conditioning activity on unilateral and bilateral jumping performance and bilateral strength asymmetry
topic Post-activation performance enhancement
Power output
Isometric
Overcoming
Plyometric
url https://doi.org/10.1038/s41598-025-88580-6
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