베타알라닌 섭취가 중장거리 여자 사이클 선수의 등속성 슬관절 근기능 및 경기기록에 미치는 영향
The Effects of -alanine Ingestion on Isokinetic Knee Strength and 3km Record in Middle-Long Distance Woman Cyclists
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본 연구는 8주간의 베타알라닌 섭취가 중장거리 여자사이클 선수의 등속성 슬관절 근기능 및 경기기록에 미치는 효과를 검증하는 데 목적이 있다. 연구 대상자는 여자 사이클 선수 8명을 선정하였으며, 베타알라닌 섭취집단(Training group with beta-alanine ingestion, TB) 4명과 위약섭취집단(Training group with placebo ingestion, TP) 4명으로 무작위 분류하였다. 고강도 복합훈련과 함께 8주 동안 1일 3회씩 베타알라닌 및 위약의 섭취가 진행되었다. 운동수행능력을 평가하기 위해 사전·사후에 등속성 슬관절 근기능과 3km 경기기록 측정을 시행하였다. 집단과 측정시기에 따른 변인들의 변화량을 비교·분석하였으며 다음과 같은 결과를 얻었다. 등속성 근력의 경우, 좌우측 60°/sec 굴근 근력, 좌우측 180°/sec 신근 근력, 우측 180°/sec 굴근 근력 에서 집단과 시점 간에 상호작용이 나타났다. 3km 기록의 경우 집단과 시점간의 상호작용이 나타났다. 결론적으로 베타알라닌 섭취는 운동수행능력 및 경기기록 향상에 기여할 것으로 생각된다.
Abstract
The purpose of this study was to examine whether β-alanine ingestion for 8 weeks can regulate isokinetic knee strength, and 3km record in middle-long distance woman cyclists. Fourteen middle-long woman cyclists participated in this study and were divided into two groups; training group with beta-alanine ingestion and training group with placebo ingestion. All subjects took in beta-alanine or placebo supplement three times per a day for 8 weeks. Physical activity was evaluated by measuring the isokinetic muscular strength and 3km record before and after intervention for 8 weeks. As a results, in isokinetic test, there were significant interrelationships in peak torque of the right and left flexors at 60°/sec, peak torque of the right and left extensors at 180°/sec, peak torque of the right flexors at 180°/sec. In 3km record, result showed a significant interrelationship by groups and time. The results of present study provide evidence that beta-alanine supplement may be effective to increase physical activity and competition record in middle-long woman cyclists.
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