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탄수화물과 크레아틴의 병행 섭취가 조정 2,000M time-trial 및 관련변인에 미치는 영향

Effect of Carbohydrate and Creatine Supplementation on 2000M Rowing Performance in Collegiate Elite Rowers

김준호|임순영|류장희|이종삼
국민체육진흥공단 한국스포츠과학원 (Korea Institute of Sport Science)|2011.06|체육과학연구 (Korean Journal of Sport Science)|제22권 제2호|pp. 1825-1840|DOI 10.24985/kjss.2011.22.2.1825

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참고문헌

키워드

혈압Heart rate심박수크레아틴Blood pressure탄수화물Creatine조정수행력스트록수CarbohydrateRowing performanceStroke frequency
주제분류체육

초록

이 연구에서는 엘리트 대학 조정 선수(10명)를 대상으로 무처치시, 탄수화물 섭취시, 크레아틴 섭취시 및 탄수화물과 크레아틴의 병행 섭취시 2000M time-trial을 실시해 이들 보충제의 섭취가 조정 수행력 및 관련 변인에 미치는 영향을 구명하고자 하였다. 모든 피험자는 총 4회의 실험에 참가해 탄수화물은 실험 전 3일간, 크레아틴은 실험 전 5일간 섭취하였으며, 탄수화물과 크레아틴의 병행 섭취의 경우 탄수화물이나 크레아틴 개개의 섭취 시 이용된 실험설계를 그대로 적용해 크레아틴은 실험 5일전부터, 탄수화물은 실험 시작 3일전부터 섭취하였다. 혈중 기질 성분 중 글루코스와 젖산, 및 관련 생리적 변인들 중 혈압과 심박수, 그리고 운동 수행 중 2,000M 로윙 종료 시간, 총 스트록수, 1회 스트록 시 이동거리, 매 500M의 구간별 기록 및 스트록수 등을 측정하였다. 각각의 변인에 대해 이원변량분석법을 이용해 평균차 검증을 실시하였으며 Tukey의 사후검정을 실시하였다. 통계적 유의수준은 α=.05로 설정하였다. 탄수화물, 크레아틴, 혹은 탄수화물과 크레아틴의 병행 섭취가 조정 2000M 완주 기록 및 총 스트록수에 유의한 변화를 일으키지 못했다. 탄수화물, 크레아틴, 혹은 탄수화물과 크레아틴의 병행 섭취가 조정 2000M time-trial시 심박수 및 혈압(수축기/이완기)에 대한 유의한 변화를 나타내지 못했다. 탄수화물, 크레아틴, 혹은 탄수화물과 크레아틴의 병행 섭취가 조정 2000M time-trial시 혈중 글루코스와 젖산 농도 변화에 유의한 효과를 나타내지 못했다(p>.05). 흥미로운 것은 실험조건과 무관하게 대부분의 피험자들에게서 안정시 혈압이 높게 나타났다는 점(133.3~144.1mmHg)으로 이 점에 대해서는 후속 연구를 통해 밝혀져야 할 것으로 사료된다. 이와 같은 결과들을 토대로 탄수화물, 크레아틴, 혹은 탄수화물과 크레아틴의 병행 섭취가 조정 2000M time-trial시 각 구간별 스트록수, 이동거리, 기록, 및 심박수에 유의한 변화를 일으키지 않는다는 결론을 내릴 수 있었다.

Abstract

The purpose of this study was to investigate the effect of carbohydrate and creatine supplementation on 2000M rowing performance in collegiate elite rowers. Total 10 rowers were recruited, and all subjects were performed four separated time-trials on rowing ergometer with either control condition (no supplement was administered) or orally supplemented conditions (3 d carbohydrate [CHO] supplement, 5 d creatine [Cre] supplement, and combined with 3 d CHO and 5 d Cre supplement). Completion time of 2000M, total stroke frequency, moving distance per single stroke, heart rate, blood pressure (both systolic and diastolic), blood glucose and lactate concentration were measured. Twoway ANOVA was used to test if the mean values were statistically different, tukey's post-hoc test was adopted to identify where the statistical significance was found. There was no statistical difference observed in total 2000M rowing time, moving distance per single stroke and stroke frequency following four different experimental treatments (p>.05). Heart rate and blood pressure was not significantly changed after CHO and Cre supplement when the comparison was made with control condition (p>.05). Supplement of CHO and Cre did not affect any glucose and lactate concentration during performing 2000M rowing and at 45 min of recovery period (p>.05). Interestingly, resting systolic blood pressure was abnormally high (133.3~144.1 mmHg) in most subjects regardless of different experimental conditions. This needs to be further examined in subsequent studies. Based on these results it was concluded that supplementation of CHO, or Cre, or CHO and Cre combination is not exert notable positive effects in 2000M rowing performance and relevant variables.

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