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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30306 - Sport and fitness sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

International Journal of Environmental Research and Public Health

ISSN

1661-7827

e-ISSN

1660-4601

Svazek periodika

19

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

12720

Kód UT WoS článku

000866742700001

EID výsledku v databázi Scopus

2-s2.0-85139844506