1. PPARA Intron Polymorphism Associated with Power Performance in 30-s Anaerobic Wingate Test.
- Author
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Petr, Miroslav, Št‘astný, Petr, Pecha, Ondřej, Šteffl, Michal, Šeda, Ondřej, and Kohlíková, Eva
- Subjects
PEROXISOME proliferator-activated receptors ,INTRONS ,GENETIC polymorphisms ,WINGATE Anaerobic Test ,CILIARY neurotrophic factor ,VITAMIN D receptors ,ANGIOTENSIN converting enzyme - Abstract
To date, polymorphisms in several genes have been associated with a strength/power performance including alpha 3 actinin, ciliary neurotrophic factor, vitamin D receptor, or angiotensin I converting enzyme, underlining the importance of genetic component of the multifactorial strength/power-related phenotypes. The single nucleotide variation in peroxisome proliferator-activated receptor alpha gene (PPARA) intron 7 G/C (rs4253778; g.46630634G>C) has been repeatedly found to play a significant role in response to different types of physical activity. We investigated the effect of PPARA intron 7 G/C polymorphism specifically on anaerobic power output in a group of 77 elite male Czech ice hockey players (18–36 y). We determined the relative peak power per body weight (P
max .kg−1 ) and relative peak power per fat free mass (W.kg−1 FFM ) during the 30-second Wingate Test (WT30) on bicycle ergometer (Monark 894E Peak bike, MONARK, Sweden). All WT30s were performed during the hockey season. Overall genotype frequencies were 50.6% GG homozygotes, 40.3% CG heterozygotes, and 9.1% CC homozygotes. We found statistically significant differences in Pmax .kg−1 and marginally significant differences in Pmax .kg−1 FFM values in WT30 between carriers and non-carriers for C allele (14.6±0.2 vs. 13.9±0.3 W.kg−1 and 15.8±0.2 vs. 15.2±0.3 W.kg−1 FFM , P = 0.036 and 0.12, respectively). Furthermore, Pmax .kg−1 FFM strongly positively correlated with the body weight only in individuals with GG genotypes (R = 0.55; p<0.001). Our results indicate that PPARA 7C carriers exhibited higher speed strength measures in WT30. We hypothesize that C allele carriers within the cohort of trained individuals may possess a metabolic advantage towards anaerobic metabolism. [ABSTRACT FROM AUTHOR]- Published
- 2014
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