Acute Effects of Supramaximal Loaded Back Squat Activation on Countermovement Jump Performance, Muscle Mechanical Properties and Skin Surface Temperature in Powerlifters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F25%3A10488853" target="_blank" >RIV/00216208:11510/25:10488853 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=SYzr6i2QQV" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=SYzr6i2QQV</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ejsc.12245" target="_blank" >10.1002/ejsc.12245</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acute Effects of Supramaximal Loaded Back Squat Activation on Countermovement Jump Performance, Muscle Mechanical Properties and Skin Surface Temperature in Powerlifters

Popis výsledku v původním jazyce

This study aimed to investigate the effects of performing either eccentric-only (ECC) or eccentric-concentric (ECC-CON) back squats (BS) with a supramaximal load on countermovement jump (CMJ) height and relative power output. Changes in front thigh skin surface temperature and mechanical properties (oscillation frequency and stiffness) of the vastus lateralis were also examined. Fourteen male powerlifters participated in this study (age: 22.5+-2.3 years, body weight: 84.2+-11.1 kg, height: 178+-7 cm, training experience: 5.4+-1.6 years, BS one-repetition maximum [1RM]: 177+-22.8 kg). The experimental sessions included 2 sets of 2 BS at 110%1RM of either ECC-CON (load distributed by half on the barbell [55%] and on weight releasers [55%]) or ECC (only eccentric phase of BS) and CTRL with no CA applied. CMJ, mechanical properties, and skin surface temperature were measured before and at the 3rd, 6th, 9th, and 12th min. after each protocol. Only the ECC-CON condition led to a significant increase in CMJ height after individual optimal rest time compared to pre-CA (38.1+-5.2 vs. 39.8+-5.0 cm; p=0.003; effect size [ES]=0.32; Δ=4.9+-5.0%) with a significant rise in skin surface temperature (32.98+-1.24 vs. 33.69+-0.96°C; p=0.006; ES=0.62; Δ=2.2+-2.6%) and no significant changes in mechanical properties of the vastus lateralis. The ECC-CON condition led to a significant acute improvement in CMJ height and an increase in front thigh skin surface temperature among powerlifters. The ECC-CON supramaximal lower-limb PAPE protocol should be effectively used among males representing high levels of lower-limb muscle strength (&gt;2 x body mass).

Název v anglickém jazyce

Acute Effects of Supramaximal Loaded Back Squat Activation on Countermovement Jump Performance, Muscle Mechanical Properties and Skin Surface Temperature in Powerlifters

Popis výsledku anglicky

This study aimed to investigate the effects of performing either eccentric-only (ECC) or eccentric-concentric (ECC-CON) back squats (BS) with a supramaximal load on countermovement jump (CMJ) height and relative power output. Changes in front thigh skin surface temperature and mechanical properties (oscillation frequency and stiffness) of the vastus lateralis were also examined. Fourteen male powerlifters participated in this study (age: 22.5+-2.3 years, body weight: 84.2+-11.1 kg, height: 178+-7 cm, training experience: 5.4+-1.6 years, BS one-repetition maximum [1RM]: 177+-22.8 kg). The experimental sessions included 2 sets of 2 BS at 110%1RM of either ECC-CON (load distributed by half on the barbell [55%] and on weight releasers [55%]) or ECC (only eccentric phase of BS) and CTRL with no CA applied. CMJ, mechanical properties, and skin surface temperature were measured before and at the 3rd, 6th, 9th, and 12th min. after each protocol. Only the ECC-CON condition led to a significant increase in CMJ height after individual optimal rest time compared to pre-CA (38.1+-5.2 vs. 39.8+-5.0 cm; p=0.003; effect size [ES]=0.32; Δ=4.9+-5.0%) with a significant rise in skin surface temperature (32.98+-1.24 vs. 33.69+-0.96°C; p=0.006; ES=0.62; Δ=2.2+-2.6%) and no significant changes in mechanical properties of the vastus lateralis. The ECC-CON condition led to a significant acute improvement in CMJ height and an increase in front thigh skin surface temperature among powerlifters. The ECC-CON supramaximal lower-limb PAPE protocol should be effectively used among males representing high levels of lower-limb muscle strength (&gt;2 x body mass).

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

2025

Kód důvěrnosti údajů

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

Název periodika

European Journal of Sport Science

ISSN

1746-1391

e-ISSN

1536-7290

Svazek periodika

25

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

e12245

Kód UT WoS článku

001389651100018

EID výsledku v databázi Scopus

2-s2.0-85213514276