Hemodynamic and cardiorespiratory predictors of sport rock climbing performance

Journal article


Fryer, Simon, Giles, David, Palomino, Inmaculada Garrido, Puerta, Alejandro de la O and Romero, Vanesa España 2018. Hemodynamic and cardiorespiratory predictors of sport rock climbing performance. Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0000000000001860
AuthorsFryer, Simon, Giles, David, Palomino, Inmaculada Garrido, Puerta, Alejandro de la O and Romero, Vanesa España
Abstract

Rock-climbing performance is largely dependent on the endurance of the forearm flexors. Recently, it was reported that forearm flexor endurance in elite climbers is independent of the ability to regulate conduit artery (brachial) blood flow, suggesting that endurance is not primarily dependent on the ability of the brachial artery to deliver oxygen, but rather the ability of the muscle to perfuse and use oxygen, i.e. skeletal muscle oxidative capacity. Purpose: The aim of the study was to determine whether an index of oxidative capacity in the flexor digitorum profundus (FDP) predicts the best sport climbing red-point grade within the last 6 months. Participants consisted of 46 sport climbers with a range of abilities. Methods: Using near infrared spectroscopy, the oxidative capacity index of the FDP was assessed by calculating the half-time for tissue oxygen re-saturation (O2HTR) following 3-5 min of ischemia. Results: Linear regression, adjusted for age, sex, BMI and training experience, revealed a 1s decrease in O2HTR was associated with an increase in red-point grade by 0.65 (95% CI: 0.35-0.94, AdjR2 = 0.53). Conclusions: Considering a grade of 0.4 separated the top 4 competitors in the 2015 International Federation Sport Climbing World Cup, these findings suggest that forearm flexor oxidative capacity index is an important determinant of rock climbing performance.

Rock-climbing performance is largely dependent on the endurance of the forearm flexors. Recently, it was reported that forearm flexor endurance in elite climbers is independent of the ability to regulate conduit artery (brachial) blood flow, suggesting that endurance is not primarily dependent on the ability of the brachial artery to deliver oxygen, but rather the ability of the muscle to perfuse and use oxygen, i.e. skeletal muscle oxidative capacity. Purpose: The aim of the study was to determine whether an index of oxidative capacity in the flexor digitorum profundus (FDP) predicts the best sport climbing red-point grade within the last 6 months. Participants consisted of 46 sport climbers with a range of abilities. Methods: Using near infrared spectroscopy, the oxidative capacity index of the FDP was assessed by calculating the half-time for tissue oxygen re-saturation (O2HTR) following 3-5 min of ischemia. Results: Linear regression, adjusted for age, sex, BMI and training experience, revealed a 1s decrease in O2HTR was associated with an increase in red-point grade by 0.65 (95% CI: 0.35-0.94, AdjR2 = 0.53). Conclusions: Considering a grade of 0.4 separated the top 4 competitors in the 2015 International Federation Sport Climbing World Cup, these findings suggest that forearm flexor oxidative capacity index is an important determinant of rock
climbing performance.

KeywordsOxidative capacity; Microvascular adaptation; Near infrared spectroscopy
Year2018
JournalJournal of Strength and Conditioning Research
PublisherWolters Kluwer
ISSN10648011
Digital Object Identifier (DOI)https://doi.org/10.1519/JSC.0000000000001860
Web address (URL)http://hdl.handle.net/10545/621876
http://creativecommons.org/licenses/by/4.0/
hdl:10545/621876
Publication dates01 Dec 2018
Publication process dates
Deposited04 Oct 2017, 11:46
Accepted02 Aug 2017
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Archived with thanks to Journal of Strength and Conditioning Research

ContributorsUniversity of Gloucestershire, University of Derby, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, University of Granada and University of Cádiz,
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