Impact of Ischemic Intra-Conditioning on Power Output and Bar Velocity of the Upper Limbs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F21%3A10426240" target="_blank" >RIV/00216208:11510/21:10426240 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cWXDJf1k_9" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cWXDJf1k_9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fphys.2021.626915" target="_blank" >10.3389/fphys.2021.626915</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of Ischemic Intra-Conditioning on Power Output and Bar Velocity of the Upper Limbs

Popis výsledku v původním jazyce

This study evaluated the effects of ischemic conditioning on power output and bar velocity in the bench press exercise. Ten healthy males (age: 25 +/- 2 years; body mass: 92 +/- 8 kg; bench press one repetition maximum -1RM: 145 +/- 13 kg), took part in two experimental sessions (with and without ischemia), 1 week apart in random and counterbalanced order. In the ischemic condition, cuffs placed around the upper part of the arms were inflated to 80% of arterial occlusion pressure before each set, while in the control condition there was no blood flow restriction. The exercise protocol included 5 sets of three repetitions each, against a resistance equal to 60% 1RM, with 5 min recovery intervals between sets. There was a main effect of condition for mean power output (MP) and mean bar velocity (MV) (p = 0.01), with overall MP being higher in ischemia than in control by 5.6 +/- 4.1% (mean +/- 90% compatibility limits), a standardized effect size (ES) of 0.51. Overall MV was also higher by 5.5 +/- 4.0%, ES = 0.63. Peak power output (PP) and peak bar velocity (PV) were similar in set 1 of the control and ischemia condition (1039 +/- 105 vs. 1054 +/- 82 W; 684 +/- 74 vs. 696 +/- 53 W; 1.09 +/- 0.07 vs. 1.12 +/- 0.09 m/s; 0.81 +/- 0.05 vs. 0.82 +/- 0.05 m/s, p = 0.67 to 0.99, mean +/- standard deviation). However, from set 3 onward (p = 0.03 to 0.001), PP and PV were higher in ischemia compared with control, with the highest difference observed in set 5 (10.9 +/- 5.9%, ES = 0.73 for PP and 8.6 +/- 4.6%; ES = 0.89 for PV). These results indicate that ischemia used before each set of the bench press exercise increases power output and bar velocity and this may be used as performance-enhancing stimulus during explosive resistance training.

Název v anglickém jazyce

Impact of Ischemic Intra-Conditioning on Power Output and Bar Velocity of the Upper Limbs

Popis výsledku anglicky

This study evaluated the effects of ischemic conditioning on power output and bar velocity in the bench press exercise. Ten healthy males (age: 25 +/- 2 years; body mass: 92 +/- 8 kg; bench press one repetition maximum -1RM: 145 +/- 13 kg), took part in two experimental sessions (with and without ischemia), 1 week apart in random and counterbalanced order. In the ischemic condition, cuffs placed around the upper part of the arms were inflated to 80% of arterial occlusion pressure before each set, while in the control condition there was no blood flow restriction. The exercise protocol included 5 sets of three repetitions each, against a resistance equal to 60% 1RM, with 5 min recovery intervals between sets. There was a main effect of condition for mean power output (MP) and mean bar velocity (MV) (p = 0.01), with overall MP being higher in ischemia than in control by 5.6 +/- 4.1% (mean +/- 90% compatibility limits), a standardized effect size (ES) of 0.51. Overall MV was also higher by 5.5 +/- 4.0%, ES = 0.63. Peak power output (PP) and peak bar velocity (PV) were similar in set 1 of the control and ischemia condition (1039 +/- 105 vs. 1054 +/- 82 W; 684 +/- 74 vs. 696 +/- 53 W; 1.09 +/- 0.07 vs. 1.12 +/- 0.09 m/s; 0.81 +/- 0.05 vs. 0.82 +/- 0.05 m/s, p = 0.67 to 0.99, mean +/- standard deviation). However, from set 3 onward (p = 0.03 to 0.001), PP and PV were higher in ischemia compared with control, with the highest difference observed in set 5 (10.9 +/- 5.9%, ES = 0.73 for PP and 8.6 +/- 4.6%; ES = 0.89 for PV). These results indicate that ischemia used before each set of the bench press exercise increases power output and bar velocity and this may be used as performance-enhancing stimulus during explosive resistance training.

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

2021

Kód důvěrnosti údajů

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

Název periodika

Frontiers in Physiology [online]

ISSN

1664-042X

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

neuvedeno

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000627335900001

EID výsledku v databázi Scopus

2-s2.0-85102444066