Post-Isometric Back Squat Performance Enhancement of Squat and Countermovement Jump

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F22%3A10448926" target="_blank" >RIV/00216208:11510/22:10448926 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fvYF-19pV4" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fvYF-19pV4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ijerph191912720" target="_blank" >10.3390/ijerph191912720</a>

Result language

angličtina

Original language name

Post-Isometric Back Squat Performance Enhancement of Squat and Countermovement Jump

Original language description

The effectiveness of isometric conditioning activity (CA) is not well described in terms of the level of performance enhancement and the presence of a stretch and shortening cycle in subsequent explosive tasks. Therefore, the aim of this study was to evaluate the effect of a maximum isometric squat as the CA and a subsequent squat jump (SJ) and countermovement jump (CMJ) height. A total of 31 semi-professional handball and soccer players were randomly assigned to two different conditions: (i) 3 sets of 3 repetitions (each lasting 3 s) of maximum isometric back squats (EXP), and (ii) no CA (CTRL). The jump height measurements were performed 5 min before the CA and approximately at the 4th and 8th minute following the completion of the CA. Due to the high inter-individual variability in the potentiation responses, the best value obtained post-CA was also analyzed. The SJ height significantly increased from baseline to the 8th minute post-CA (p = 0.004; ES = 0.31; Delta = +3.1 +/- 5.0%) in the EXP condition. On the other hand, the CMJ height was significantly higher in the 4th (p = 0.001; ES = 0.23; Delta = +2.7 +/- 3.7%) and 8th minute post-CA (p = 0.005; ES = 0.32; Delta = +3.6 +/- 5.7%) in comparison to baseline during the EXP condition. Furthermore, SJ height significantly increased from baseline to the best time-point during the EXP (p &lt; 0.001; ES = 0.47; Delta = +4.9 +/- 4.9%) and CTRL (p = 0.038; ES = 0.21; Delta = +2.5 +/- 5.8%) condition. Moreover, the CMJ height was significantly higher at the best time-points than at the baseline during EXP (p &lt; 0.001; ES = 0.53; Delta = +5.6 +/- 4.7%) and CTRL (p = 0.002; ES = 0.38; Delta = +3.1 +/- 5.2%) condition. The findings from this study indicate that a maximum isometric squat, used as a CA, effectively improved SJ and CMJ height. This suggests that the presence or absence of a stretch and shortening cycle in both CA and post-CA tasks does not significantly impact the post-activation performance enhancement response.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30306 - Sport and fitness sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Environmental Research and Public Health

ISSN

1661-7827

e-ISSN

1660-4601

Volume of the periodical

19

Issue of the periodical within the volume

19

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

12720

UT code for WoS article

000866742700001

EID of the result in the Scopus database

2-s2.0-85139844506