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세로토닌 운반체 유전자다형성과 지구성운동 적성과의 관련성

The relationship between 5-HTT gene polymorphism and endurance performance

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박동호, 김창선, 정동식, 성봉주, 김영수. 세로토닌 운반체 유전자다형성과 지구성운동 능력과의 관계. 운동과학, 제14권 제2호, 171-180, 2005. 본 연구의 목적은 세로토닌 운반체 (5-HTT) 유전자 다형성과 지구성 운동 적성과의 관련성을 확인하는데 있었다. 5-HTT 유전자 다형성의 빈도 분포를 알아보기 위해 273명의 일반대학생 (CON), 42명의 엘리트 장거리선수 (ELDR) 및 34명의 엘리트 단거리선수 (ESDR)로부터 총 349개의 말초혈관 혈액샘플이 수집되었다. 5-HTT-SS, LS 및 LL형의 유전자형 빈도에서 CON 집단 (SS: 62.7%, LS: 30.0%, LL: 7.3%)과 ELDR 집단 (SS: 71.4%, SL: 28.6%, LL: 0%, p< .05) 그리고 ELDR 집단과 ESDR 집단간에 (SS: 61.76%, LS: 26.47%, LL: 11.77%, p< .05) 유의한 차이를 보였다. 또한 하디 웨인버그 평형검사에서는 유전자형 (SS, LS, LL 형)에 따른 유의한 차이가 나타나지 않았다 (X2= 2.559, d.f.= 2, p= .278). 본 연구결과에서, 흥미로운 발견은 엘리트 장거리선수 (국가대표선수 및 우수선수)들에게서 LL 형이 없었다는 것이다. 이러한 결과는 5-HTTLPR 유전자다형성이 지구성 운동수행 능력과 관련성이 있음을 시사하는 것이다.

Abstract

Park, D.H., Kim, C.S., Joung, D.S., Sung, B.J., Kim, Y.S. The relationship between 5-HTT gene polymorphism and endurance performance. Exercise Science, 14(2): 171-180, 2005. To determine whether serotonin transporter (5-HTT) gene polymorphism could be associated with sports aptitude in endurance performance, polymorphisms in the 5-HTT were determined in genormic DNA obtained from 273 control participants (CON), Forty-two elite long distance runners (ELDR), and thirty-four elite short distance runners (ELDR). The genotypic frequencies of 5-HTT-SS, LS, and LL were significantly differences between the CON (SS: 62.7%, LS: 30.0%, LL: 7.3%) and ELDR (SS: 71.4%, LS: 28.6%, LL: 0%, p< .05) as well as between the ELDR and ESDR (SS: 61.76%, LS: 26.47%, LL: 11.77%, p< .05), respectively. In addition, the genotypic frequencies in the CON group as a general population conformed to the Hardy-Weinberg equilibrium (X2= 2.559, d.f.= 2, p= .278). According to our results, the interesting finding was that nobody in the ELDR has LL genotype. Consequently, these results suggested that the 5-HTTLPR genotype might be associated with the capacity of endurance performance.

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