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The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness

To date, research has examined the physiological determinants of performance in standardized CrossFit(®) (CF) workouts but not without the influence of CF familiarity. Therefore, the purpose of this present study was to examine the predictive value of aerobic fitness, body composition, and total bod...

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Autores principales: Zeitz, Elisabeth K., Cook, Lena F., Dexheimer, Joshua D., Lemez, Srdjan, Leyva, Whitney D., Terbio, Immanuel Y., Tran, Justin R., Jo, Edward
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7466681/
https://www.ncbi.nlm.nih.gov/pubmed/32796573
http://dx.doi.org/10.3390/sports8080112
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author Zeitz, Elisabeth K.
Cook, Lena F.
Dexheimer, Joshua D.
Lemez, Srdjan
Leyva, Whitney D.
Terbio, Immanuel Y.
Tran, Justin R.
Jo, Edward
author_facet Zeitz, Elisabeth K.
Cook, Lena F.
Dexheimer, Joshua D.
Lemez, Srdjan
Leyva, Whitney D.
Terbio, Immanuel Y.
Tran, Justin R.
Jo, Edward
author_sort Zeitz, Elisabeth K.
collection PubMed
description To date, research has examined the physiological determinants of performance in standardized CrossFit(®) (CF) workouts but not without the influence of CF familiarity. Therefore, the purpose of this present study was to examine the predictive value of aerobic fitness, body composition, and total body strength on performance of two standardized CF workouts in CF-naïve participants. Twenty-two recreationally trained individuals (males = 13, females = 9) underwent assessments of peak oxygen consumption (VO(2) peak), ventilatory thresholds, body composition, and one repetition maximum tests for the back squat, deadlift, and overhead press in which the sum equaled the CF Total. Participants also performed two CF workouts: a scaled version of the CF Open workout 19.1 and a modified version of the CF Benchmark workout Fran to determine scores based on total repetitions completed and time-to-completion, respectively. Simple Pearson’s r correlations were used to determine the relationships between CF performance variables (19.1 and modified Fran) and the independent variables. A forward stepwise multiple linear regression analysis was performed and significant variables that survived the regression analysis were used to create a predictive model of CF performance. Absolute VO(2) peak was a significant predictor of 19.1 performance, explaining 39% of its variance (adjusted R(2) = 0.39, p = 0.002). For modified Fran, CF Total was a significant predictor and explained 33% of the variance in performance (adjusted R(2) = 0.33, p = 0.005). These results suggest, without any influence of CF familiarity or experience, that performance in these two CF workouts could be predicted by distinct laboratory-based measurements of fitness.
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spelling pubmed-74666812020-09-14 The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness Zeitz, Elisabeth K. Cook, Lena F. Dexheimer, Joshua D. Lemez, Srdjan Leyva, Whitney D. Terbio, Immanuel Y. Tran, Justin R. Jo, Edward Sports (Basel) Article To date, research has examined the physiological determinants of performance in standardized CrossFit(®) (CF) workouts but not without the influence of CF familiarity. Therefore, the purpose of this present study was to examine the predictive value of aerobic fitness, body composition, and total body strength on performance of two standardized CF workouts in CF-naïve participants. Twenty-two recreationally trained individuals (males = 13, females = 9) underwent assessments of peak oxygen consumption (VO(2) peak), ventilatory thresholds, body composition, and one repetition maximum tests for the back squat, deadlift, and overhead press in which the sum equaled the CF Total. Participants also performed two CF workouts: a scaled version of the CF Open workout 19.1 and a modified version of the CF Benchmark workout Fran to determine scores based on total repetitions completed and time-to-completion, respectively. Simple Pearson’s r correlations were used to determine the relationships between CF performance variables (19.1 and modified Fran) and the independent variables. A forward stepwise multiple linear regression analysis was performed and significant variables that survived the regression analysis were used to create a predictive model of CF performance. Absolute VO(2) peak was a significant predictor of 19.1 performance, explaining 39% of its variance (adjusted R(2) = 0.39, p = 0.002). For modified Fran, CF Total was a significant predictor and explained 33% of the variance in performance (adjusted R(2) = 0.33, p = 0.005). These results suggest, without any influence of CF familiarity or experience, that performance in these two CF workouts could be predicted by distinct laboratory-based measurements of fitness. MDPI 2020-08-11 /pmc/articles/PMC7466681/ /pubmed/32796573 http://dx.doi.org/10.3390/sports8080112 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zeitz, Elisabeth K.
Cook, Lena F.
Dexheimer, Joshua D.
Lemez, Srdjan
Leyva, Whitney D.
Terbio, Immanuel Y.
Tran, Justin R.
Jo, Edward
The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title_full The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title_fullStr The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title_full_unstemmed The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title_short The Relationship between CrossFit(®) Performance and Laboratory-Based Measurements of Fitness
title_sort relationship between crossfit(®) performance and laboratory-based measurements of fitness
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7466681/
https://www.ncbi.nlm.nih.gov/pubmed/32796573
http://dx.doi.org/10.3390/sports8080112
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