엘리트 경보 선수들의 걷기 운동부하검사 프로토콜에 따른 심박수, 환기량, 산소섭취량, 젖산 변화 및 회복률 비교
Comparison of Heart Rate, Ventilation, Maximal Oxygen Uptake, Lactate Level, and Recovery Rate During Two Types of Walking Graded Exercise Testing in Elite Race Walkers
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초록
[목적] 본 연구는 엘리트 경보 선수를 대상으로 두 가지 형태의 걷기 운동부하검사 시 나타나는 생리학적 변화를 관찰하기 위해 진행되었다. [방법] 피험자는 국가대표 남자 경보선수 6명을 대상으로 실시하였으며, 배정은 randomized cross-over design으로1주일 간격으로 총 2회 진행되었다. [결과] 두 가지 걷기 형태의 운동부하검사에서 산소섭취량, 환기량 및 심박수는 시점 간 유의차가 있는 것으로 나타났다(p <.01~.05). 운동시간 및 산소섭취량에서는 집단 간 차이가 있었지만(p <.01~.05), 환기량 및 심박수는 나타나지 않았다. 회복기 동안, 젖산의 경우 시점 간 차이는 있었지만(p <.01), 집단 간 차이는 없는 것으로 나타났다. [결론] 이상의 결과를 종합해보면 두 가지 형태의 운동부하검사 중 변형된 걷기 프로토콜이 경보선수의 생리학적 변화를 관찰하는데 더 효과적일 것임을 알 수 있다.
Abstract
PURPOSE The purpose of this study was to identify a sport-specific assessment for elite race walking athletes by comparing physiological responses to different types of walking graded exercise test (GTX) protocols. METHODS Six elite race walking athletes completed two types of walking protocols in a randomized crossover design with 1 week of interval between trials. Exercise time, oxygen uptake (VO2), ventilation (VE), and heart rate (HR) were measured in each trial; the lactate level was measured during the recovery period. RESULTS VO2, VE, and HR differed significantly between the trials (p<.01~.05). Exercise time (p<.01) and VO2 (p<.05) differed significantly between the walking protocols; however, VE and HR did not differ significantly. During the recovery period, lactate levels differed significantly between the trials (p<.01), but not the walking protocol. CONCLUSIONS These results suggest that modified walking GXT protocols were appropriate to assess elite race walking athletes.
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