Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Local Muscle Endurance and Strength are the Best Predictors of Crossfit Open 2020 in Amateur Athletes

Version 1 : Received: 31 May 2021 / Approved: 1 June 2021 / Online: 1 June 2021 (12:32:59 CEST)

A peer-reviewed article of this Preprint also exists.

Tibana, R.A.; de Sousa Neto, I.V.; Sousa, N.M.F.; Romeiro, C.; Hanai, A.; Brandão, H.; Dominski, F.H.; Voltarelli, F.A. Local Muscle Endurance and Strength Had Strong Relationship with CrossFit® Open 2020 in Amateur Athletes. Sports 2021, 9, 98. Tibana, R.A.; de Sousa Neto, I.V.; Sousa, N.M.F.; Romeiro, C.; Hanai, A.; Brandão, H.; Dominski, F.H.; Voltarelli, F.A. Local Muscle Endurance and Strength Had Strong Relationship with CrossFit® Open 2020 in Amateur Athletes. Sports 2021, 9, 98.

Journal reference: Sports 2021, 9, 98
DOI: 10.3390/sports9070098

Abstract

This study analyzed the relationship between anthropometric measures, cardiorespiratory capacity, strength, power and local muscle endurance with performance in the CrossFit® Open 2020. For this, 17 volunteers (6 women) (29.0 ± 7.2 years; 70.5 ± 9.8 kg) completed, on separate weeks, body composition (dual-energy x-ray absorptiometry), maximal oxygen consumption (2km row test), muscle strength (1RM back and front squat, isometric peak torque), and muscle power (1RM snatch and clean & jerk), and muscle endurance (Tibana test), which were compared with performance during the CrossFit® Open 2020. Multiple linear regression showed that for the CrossFit Open 2020.1 and 2020.2 workouts, the score in the Tibana test was the only variable that explained the outcomes (Beta = -0.78, p < 0.01 for 2020.1 workout and Beta = 0.82, p < 0.01 for 2020.2 workout). Performance in the CrossFit Open 2020.3 and 2020.4 workouts were explained through the relative strength (Beta = 0.58, p = 0.02 for 2020.3 workout and Beta = 0.50, p = 0.04 for 2020.4 workout). Lastly, Tibana test had the greatest influence on CrossFit Open 2020.5 workout (Beta = -0.75, p < 0.01). A local muscle endurance and muscle strength may be used to predict CrossFit® open workout performance.

Keywords

Functional fitness training; athletic performance; exercise testing

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