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Exerc Sci > Volume 21(3); 2012 > Article
Exercise Science 2012;21(3): 319-330. doi: https://doi.org/10.15857/ksep.2012.21.3.319
롤러 스피드 스케이팅 선수들의 ACTN-3 유전자 다형성에 따른 근기능 및 유·무산소성 능력
변재경, 박순희
Muscular function, aerobic and anaerobic capacity to ACTN-3 polymorphism of Roller speed skaters.
The purpose of this study was to examine muscle function, anaerobic power capacity and aerobic capacity depending on ACTN-3 gene polymorphism of speed roller skaters. RR, RX, and XX types were determined through PCR in 29 male and 26 female elite players. Isokinetic muscular function of the knee joint for sprint and long-distance events was measured by the peak torque and the total work through left and right flexors and extensors, respectively, at 60 °/sec for 5 repetitions and 180 °/sec for 26 repetitions. Anaerobic power capacity, peak power, mean power, and fatigue index were analyzed using the Wingate measurement method over 30 seconds. Aerobic capacity, VO2max, HRpeak, and AT level were analyzed by using Bruce protocol of maximal treadmill test. As a result, this study came to the following findings:sprinters in speed roller skating have a higher RR and RX frequency, whereas long-distance skaters have a higher XX frequency. In addition, RR skaters showed better anaerobic capacity than XX skaters, whereas XX skaters showed better aerobic capacity than RR skaters. Among all ACTN-3 gene polymorphisms, RR genotype is advantageous to sport events in which anaerobic power capacity works as a determinant of performance, while XX genotype is advantageous to sport events in which aerobic capacity is required to improve performance. Therefore, these two types of ACTN-3 gene polymorphism maybe appropriate for forecasting speed roller skaters' aerobic and anaerobic capacity of sport performance.
Key words: ACTN-3 polymorphism, Roller speed skaters, Muscular function, Aerobic and Anaerobic capacity.
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