ACTN3 (R577X) genotype is associated with fiber type distribution
نویسندگان
چکیده
منابع مشابه
ACTN3 (R577X) genotype is associated with fiber type distribution.
alpha-Actinin-3 is a Z-disc structural protein found only in type II muscle fibers. The X allele of the R577X polymorphism in the ACTN3 gene results in a premature stop codon and alpha-actinin-3 deficiency in XX homozygotes. Associations between the R577X polymorphism and the muscle-power performance of elite athletes have been described earlier. About 45% of the fiber type proportions are dete...
متن کاملACTN3 genotype is associated with human elite athletic performance.
There is increasing evidence for strong genetic influences on athletic performance and for an evolutionary "trade-off" between performance traits for speed and endurance activities. We have recently demonstrated that the skeletal-muscle actin-binding protein alpha-actinin-3 is absent in 18% of healthy white individuals because of homozygosity for a common stop-codon polymorphism in the ACTN3 ge...
متن کاملActn3 Genotype Is Associated with Testosterone Levels of Athletes
UNLABELLED α-Actinin-3 (ACTN3) has been proposed to regulate skeletal muscle differentiation and hypertrophy through its interaction with the signalling protein calcineurin. Since the inhibition of calcineurin potentiates the production of testosterone, we hypothesized that α-actinin-3 deficiency (predicted from the ACTN3 XX genotype) may influence serum levels of testosterone of athletes. OB...
متن کاملACTN3 R577X polymorphism is not associated with team sport athletic status in Italians.
BACKGROUND The ACTN3 gene may influence performance in team sports, in which sprint action and high-speed movements, regulated by the anaerobic energy system, are crucial to the ultimate success of a match. The aim of this study was to determine the association between the ACTN3 R577X (rs1815739) polymorphism and elite team sport athletic status in Italian male athletes. METHODS We compared t...
متن کاملThe ACTN3 R577X Polymorphism Is Associated with Cardiometabolic Fitness in Healthy Young Adults
Homozygosity for a premature stop codon (X) in the ACTN3 "sprinter" gene is common in humans despite the fact that it reduces muscle size, strength and power. Because of the close relationship between skeletal muscle function and cardiometabolic health we examined the influence of ACTN3 R577X polymorphism over cardiovascular and metabolic characteristics of young adults (n = 98 males, n = 102 f...
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ژورنال
عنوان ژورنال: Physiological Genomics
سال: 2007
ISSN: 1094-8341,1531-2267
DOI: 10.1152/physiolgenomics.00173.2007