title: Genetic variants of uncoupling proteins-2 and -3 in relation to maximal oxygen uptake in different sports.
abstract: Uncoupling proteins 2 and 3 (UCP2 and UCP3) as mitochondrial electron transporters are involved in regulation of ATP production and energy dissipation as heat. Energy efficiency plays an important role in physical performance, especially in aerobic fitness. The aim of this study was to examine the association between maximal oxygen uptake and genetic variants of the UCP2 and UCP3 genes. The studies were carried out in a group of 154 men and 85 women, professional athletes representing various sports and fitness levels and students of the University of Physical Education in Poznań. Physiological and molecular procedures were used, i.e. direct measurement of maximum oxygen uptake (VO₂max) and analysis of an insertion/deletion (I/D) polymorphism in the 3'untranslated region of exon 8 of the UCP2 gene and a C>T substitution in exon 5 (Y210Y) of the UCP3 gene. No statistically significant associations were found, only certain trends. Insertion allele (I) of the I/D UCP2 and the T allele of the UCP3 gene were favourable in obtaining higher VO₂max level and might be considered as endurance-related alleles.
authors.affiliation: Department of Physiology, Faculty of Physical Education, Sport and Rehabilitation, The Eugeniusz Piasecki University School of Physical Education, Poznań, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Holdys
authors.forename: Piotr
authors.initials: P
authors.lastname: Gronek
authors.forename: Jakub
authors.initials: J
authors.lastname: Kryściak
authors.forename: Daniel
authors.initials: D
authors.lastname: Stanisławski
mesh_terms: D000293:Adolescent; D000328:Adult; D004734:Energy Metabolism / Q000235:genetics; D005260:Female; D014644:Genetic Variation; D006801:Humans; D007473:Ion Channels / Q000235:genetics*; D008297:Male; D024101:Mitochondrial Proteins / Q000235:genetics*; D010101:Oxygen Consumption / Q000235:genetics*; D011110:Polymorphism, Genetic; D013177:Sports / Q000502:physiology*; D000071246:Uncoupling Protein 2; D000071247:Uncoupling Protein 3
chemical_list: D007473:Ion Channels; D024101:Mitochondrial Proteins; C000604389:UCP2 protein, human; C000604392:UCP3 protein, human; D000071246:Uncoupling Protein 2; D000071247:Uncoupling Protein 3