Heavy mental task has no effect on sex differences in muscle fatigability during moderate-intensity isometric contraction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F25%3A10503793" target="_blank" >RIV/00216208:11510/25:10503793 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cEiCrz5lAQ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cEiCrz5lAQ</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-025-18659-7" target="_blank" >10.1038/s41598-025-18659-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heavy mental task has no effect on sex differences in muscle fatigability during moderate-intensity isometric contraction

Popis výsledku v původním jazyce

In some physical activities with simultaneous mental task, we can observe greater muscle fatigability in women than in men. These differences are evident in various muscle groups, especially during low-intensity isometric or intermittent isometric contractions with the simultaneous heavy mental task. The aim of this study was to monitor the effect of heavy mental task on sex differences in muscle fatigability during isometric contraction of moderate intensity in the biceps brachii muscle. Seventeen men (27.1 +- 2.5 years) and seventeen women (26.2 +- 3.5 years) attended two sessions (control and stressor) where they performed isometric contraction of the biceps brachii muscle to failure at an intensity of 40% maximum voluntary contraction (MVC). In control session, the participants performed the isometric contraction to failure alone. In stressor session, a simultaneous heavy mental task was included (subtracting the number 13 from any four-digit number). The time to task failure (TTF) and percentage decrease in the median frequency (MDF) were monitored. We did not observe a sex: session interaction effect for the TTF nor the MDF percentage decrease and therefore we can assume that simultaneous heavy mental task did not affect women more than men. We also did not observe a session effect, so we also can state that the simultaneous heavy mental task did not affect the TTF or the MDF percentage decrease. A sex effect was not observed for the percentage decrease in MDF, but it was statistically significant for TTF, where women lasted 47.9% longer in the control session and 56.4% longer in the stressor session. The simultaneous heavy mental task during isometric contraction to failure of the biceps brachii muscle of moderate intensity does not have a greater effect on women than on men.

Název v anglickém jazyce

Heavy mental task has no effect on sex differences in muscle fatigability during moderate-intensity isometric contraction

Popis výsledku anglicky

In some physical activities with simultaneous mental task, we can observe greater muscle fatigability in women than in men. These differences are evident in various muscle groups, especially during low-intensity isometric or intermittent isometric contractions with the simultaneous heavy mental task. The aim of this study was to monitor the effect of heavy mental task on sex differences in muscle fatigability during isometric contraction of moderate intensity in the biceps brachii muscle. Seventeen men (27.1 +- 2.5 years) and seventeen women (26.2 +- 3.5 years) attended two sessions (control and stressor) where they performed isometric contraction of the biceps brachii muscle to failure at an intensity of 40% maximum voluntary contraction (MVC). In control session, the participants performed the isometric contraction to failure alone. In stressor session, a simultaneous heavy mental task was included (subtracting the number 13 from any four-digit number). The time to task failure (TTF) and percentage decrease in the median frequency (MDF) were monitored. We did not observe a sex: session interaction effect for the TTF nor the MDF percentage decrease and therefore we can assume that simultaneous heavy mental task did not affect women more than men. We also did not observe a session effect, so we also can state that the simultaneous heavy mental task did not affect the TTF or the MDF percentage decrease. A sex effect was not observed for the percentage decrease in MDF, but it was statistically significant for TTF, where women lasted 47.9% longer in the control session and 56.4% longer in the stressor session. The simultaneous heavy mental task during isometric contraction to failure of the biceps brachii muscle of moderate intensity does not have a greater effect on women than on men.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30306 - Sport and fitness sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>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

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

34918

Kód UT WoS článku

001589757700012

EID výsledku v databázi Scopus

2-s2.0-105017947343