Comparison of tests to measure muscle fatigue in training of male CrossFit athlete: a systematic review

Abstract

CrossFit is training highly practiced by various athletes around the world, who prepare each year to be better and be selected to compete in the CrossFit Games. Currently very little known about the tests that assess muscle fatigue in athletes who practice this type of training. Muscle fatigue plays a fundamental role in the performance of athletes for their preparation and competition. The purpose of this study was to compare the different tests used to measure muscle fatigue in male CrossFit athletes. For them, a systematic search was carried out following the PRISMA guidelines, and the following inclusion criteria were included in the articles: original articles, CrossFit male athletes, and evaluation of muscle fatigue. Studies published in the last 10 years (from 2011 to March 31, 2021) the articles were not limited to a specific language, finding mostly English and Spanish. The main selection was by title, then by abstracting and reading the entire document in potential studies. Finally, five articles were found in which various tests were found to measure muscle fatigue in CrossFit athletes. In conclusion, given the wide variety of workouts (WOD) types of exercises and intensities in CrossFit, it is necessary to assess physical tests and biochemical markers.