RELIABILITY OF NEAR-INFRARED SPECTROSCOPY FOR MEASURING INTERMITTENT HANDGRIP CONTRACTIONS IN SPORT CLIMBERS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F18%3A10375706" target="_blank" >RIV/00216208:11510/18:10375706 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

RELIABILITY OF NEAR-INFRARED SPECTROSCOPY FOR MEASURING INTERMITTENT HANDGRIP CONTRACTIONS IN SPORT CLIMBERS

Popis výsledku v původním jazyce

The use of near-infrared spectroscopy (NIRS) to investigate muscle oxygenation changes during physical tasks such as rock climbing has rapidly increased within recent years; yet, there is no known measure of reliability. The current study aimed to determine intersession reliability and minimal detectable change (MDC) of continuous wave NIRS parameters during intermittent handgrip contractions in rock climbers. Thirty-two sport climbers were tested for exhaustive intermittent handgrip exercise (8-second contraction-2-second relief) at 60% of maximal voluntary contraction on 3 separate days. During each visit, continuous wave NIRS was used to determine tissue saturation index (TSI) as the measure of tissue oxygenation in the flexor digitorum profundus. To assess the intersession reliability, the intraclass correlation coefficient (ICC), SEM, coefficient of variation (CV), and MDC were used. Mean deoxygenation during the contractions provided reliable results (Delta TSI; first trial -8.9 +/- 2.9%, second trial -8.8 +/- 2.7%, and third trial -8.4 +/- 2.6%; ICC = 0.692; SEM = 1.5%; CV = 17.2%; MDC = 4.2%). Mean muscle reoxygenation during the relief periods was similarly reliable (. TSI; first trial 9.0 +/- 3.1%, second trial 8.8 +/- 2.9%, and third trial 8.5 +/- 2.7%; ICC = 0.672; SEM = 1.7%; CV = 19.0%, MDC = 4.7%). As such, continuous wave NIRS provides a reliable measure of deoxygenation and reoxygenation during intermittent contractions to failure in the forearm flexors of rock climbers. Differences exceeding similar to 4.5% for Delta TSI during contraction and relief periods should be considered meaningful.

Název v anglickém jazyce

RELIABILITY OF NEAR-INFRARED SPECTROSCOPY FOR MEASURING INTERMITTENT HANDGRIP CONTRACTIONS IN SPORT CLIMBERS

Popis výsledku anglicky

The use of near-infrared spectroscopy (NIRS) to investigate muscle oxygenation changes during physical tasks such as rock climbing has rapidly increased within recent years; yet, there is no known measure of reliability. The current study aimed to determine intersession reliability and minimal detectable change (MDC) of continuous wave NIRS parameters during intermittent handgrip contractions in rock climbers. Thirty-two sport climbers were tested for exhaustive intermittent handgrip exercise (8-second contraction-2-second relief) at 60% of maximal voluntary contraction on 3 separate days. During each visit, continuous wave NIRS was used to determine tissue saturation index (TSI) as the measure of tissue oxygenation in the flexor digitorum profundus. To assess the intersession reliability, the intraclass correlation coefficient (ICC), SEM, coefficient of variation (CV), and MDC were used. Mean deoxygenation during the contractions provided reliable results (Delta TSI; first trial -8.9 +/- 2.9%, second trial -8.8 +/- 2.7%, and third trial -8.4 +/- 2.6%; ICC = 0.692; SEM = 1.5%; CV = 17.2%; MDC = 4.2%). Mean muscle reoxygenation during the relief periods was similarly reliable (. TSI; first trial 9.0 +/- 3.1%, second trial 8.8 +/- 2.9%, and third trial 8.5 +/- 2.7%; ICC = 0.672; SEM = 1.7%; CV = 19.0%, MDC = 4.7%). As such, continuous wave NIRS provides a reliable measure of deoxygenation and reoxygenation during intermittent contractions to failure in the forearm flexors of rock climbers. Differences exceeding similar to 4.5% for Delta TSI during contraction and relief periods should be considered meaningful.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

30306 - Sport and fitness sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Strength and Conditioning Research

ISSN

1064-8011

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

494-501

Kód UT WoS článku

000428745500024

EID výsledku v databázi Scopus

2-s2.0-85049271652