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Prevalence of Polymorphism and Post-Training Expression of ACTN3 (R/X) and ACE (I/D) Genes in CrossFit Athletes

Abstract

Background: CrossFit is known as a functional fitness training high-intensity exercise to improve physical performance. The most studied polymorphisms are the ACTN3 R577X gene, known for speed, power, and strength, and ACE I/D, related to endurance and strength. The present investigation analyzed the effects of training on ACTN3 and ACE gene expression in CrossFit athletes for 12 weeks.

Methods: the studies included 18 athletes from the Rx category, where ACTN3 (RR, RX, XX) and ACE (II, ID, DD) characterization of genotypes and tests of maximum strength (NSCA), power (T-Force), and aerobic endurance (Course Navette) were performed. The technique used was the reverse transcription-quantitative PCR real-time polymerase chain reaction (RT-qPCR) for the relative expression analysis.

Results: the relative quantification (RQ) values for the ACTN3 gene increased their levels 2.3 times ( = 0.035), and for ACE, they increased 3.0 times ( = 0.049).

Conclusions: there is an overexpression of the ACTN3 and ACE genes due to the effect of training for 12 weeks. Additionally, the correlation of the expression of the ACTN3 ( = 0.040) and ACE ( = 0.030) genes with power was verified.

Citing Articles

Influence of genetic polymorphism on sports talent performance versus non-athletes: a systematic review and meta-analysis.

Ferreira C, Silvino V, Trevisano R, de Moura R, Almeida S, Dos Santos M BMC Sports Sci Med Rehabil. 2024; 16(1):223.

PMID: 39482721 PMC: 11529235. DOI: 10.1186/s13102-024-01001-5.

References
1.
Peplonska B, Adamczyk J, Siewierski M, Safranow K, Maruszak A, Sozanski H . Genetic variants associated with physical and mental characteristics of the elite athletes in the Polish population. Scand J Med Sci Sports. 2016; 27(8):788-800. DOI: 10.1111/sms.12687. View

2.
Thomas K, Zheng X, Suarez F, Raftery J, Quinlan K, Yang N . Evidence based selection of commonly used RT-qPCR reference genes for the analysis of mouse skeletal muscle. PLoS One. 2014; 9(2):e88653. PMC: 3921188. DOI: 10.1371/journal.pone.0088653. View

3.
Hogarth M, Garton F, Houweling P, Tukiainen T, Lek M, MacArthur D . Analysis of the ACTN3 heterozygous genotype suggests that α-actinin-3 controls sarcomeric composition and muscle function in a dose-dependent fashion. Hum Mol Genet. 2015; 25(5):866-77. PMC: 4754040. DOI: 10.1093/hmg/ddv613. View

4.
Ramsbottom R, Brewer J, Williams C . A progressive shuttle run test to estimate maximal oxygen uptake. Br J Sports Med. 1988; 22(4):141-4. PMC: 1478728. DOI: 10.1136/bjsm.22.4.141. View

5.
Ma F, Yang Y, Li X, Zhou F, Gao C, Li M . The association of sport performance with ACE and ACTN3 genetic polymorphisms: a systematic review and meta-analysis. PLoS One. 2013; 8(1):e54685. PMC: 3554644. DOI: 10.1371/journal.pone.0054685. View