Genetic Polymorphisms Related to VO2max Adaptation Are Associated With Elite Rugby Union Status and Competitive Marathon Performance

Hall, Elliott C.R. and Almeida, Sandro S. and Heffernan, Shane M. and Lockey, Sarah J. and Herbert, Adam J. and Callus, Peter and Day, Stephen H. and Pedlar, Charles R. and Kipps, Courtney and Collins, Malcolm and Pitsiladis, Yannis P. and Bennett, Mark A. and Kilduff, Liam P. and Stebbings, Georgina K. and Erskine, Robert M. and Williams, Alun G. (2021) Genetic Polymorphisms Related to VO2max Adaptation Are Associated With Elite Rugby Union Status and Competitive Marathon Performance. International Journal of Sports Physiology and Performance. ISSN 1555-0265

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Abstract

Purpose: Genetic polymorphisms have been associated with the adaptation to training in maximal oxygen uptake (˙VO2max). However, the genotype distribution of selected polymorphisms in athletic cohorts is unknown, with their influence on performance characteristics also undetermined. This study investigated whether the genotype distributions of 3 polymorphisms previously associated with ˙VO2max training adaptation are associated with elite athlete status and performance characteristics in runners and rugby athletes, competitors for whom aerobic metabolism is important. Methods: Genomic DNA was collected from 732 men including 165 long-distance runners, 212 elite rugby union athletes, and 355 nonathletes. Genotype and allele frequencies of PRDM1 rs10499043 C/T, GRIN3A rs1535628 G/A, and KCNH8 rs4973706 T/C were compared between athletes and nonathletes. Personal-best marathon times in runners, as well as in-game performance variables and playing position, of rugby athletes were analyzed according to genotype. Results: Runners with PRDM1 T alleles recorded marathon times ∼3 minutes faster than CC homozygotes (02:27:55 [00:07:32] h vs 02:31:03 [00:08:24] h, P = .023). Rugby athletes had 1.57 times greater odds of possessing the KCNH8 TT genotype than nonathletes (65.5% vs 54.7%, χ2 = 6.494, P = .013). No other associations were identified. Conclusions: This study is the first to demonstrate that polymorphisms previously associated with ˙VO2max training adaptations in nonathletes are also associated with marathon performance (PRDM1) and elite rugby union status (KCNH8). The genotypes and alleles previously associated with superior endurance-training adaptation appear to be advantageous in long-distance running and achieving elite status in rugby union.

Item Type: Article
Identification Number: https://doi.org/10.1123/ijspp.2020-0856
Date: 4 June 2021
Uncontrolled Keywords: genomics; exercise; heritability; endurance; polymorphism
Subjects: C600 Sports Science
Divisions: Faculty of Health, Education and Life Sciences > Centre for Life and Sport Sciences (C-LASS)
Depositing User: Adam Herbert
Date Deposited: 16 Aug 2021 15:22
Last Modified: 16 Aug 2021 16:09
URI: http://www.open-access.bcu.ac.uk/id/eprint/12084

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