유산소운동 수준에 따른 중추신경계의 활동변화
Activity change in the central nerve system based on aerobic exercise level
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유산소운동 수준에 따른 중추신경계의 활동변화. 운동과학, 2015년, 제0권 제0호. [목적] 본 연구의 목적은 총 운동량을 동일하게 설정한 최대운동 및 3단계의 최대하운동에 의해 지각 · 인지기능의 항진에 변화가 나타나는지, 또한 인지기능에 변화가 나타날 경우에 운동강도의 차이에 의해 어느정도 항진하는가를 명확하게 밝히고자 한다. [방법] 본 연구에서는 남자 대학생 6명(23.0±1.0)을 연구대상으로 하였다. 운동강도는 피험자의 최대산소섭취량(VO2max)을 기준으로 40VO2max, 60%VO2max, 80%VO2max강도의 최대하운동과 100%VO2max강도의 최대운동의 4단계로 설정했다. 그리고 각 강도에서의 운동시간은 완전탈진에 도달하는 100%VO2max강도를 고려해서 운동강도 × 시간(분)의 총 운동량이 동일하도록 설정했다. 그리고 4단계의 운동강도 전후에 P300을 측정하였다. [결과] P300진폭은 운동 후에 증가하는 경향이 나타났다〔F(3,15)=2.56, p<0.10〕. 운동전후의 주 효과 및 도출부위의 주 효과에 F(1,5)=29.52, p<0.05, F(2,10)=18.8 p<0.01의 유의한 차이가 나타났다. 도출부위에 대한 하위검증은 Fz와 Cz사이 p<0.05, Fz와 Pz사이 및 Cz와 Pz 사이에서 p<0.01의 유의한 차이가 나타났다. 운동강도의 하위검정에서는60%VO2max, 와 100%VO2max사이에 p<0.05의 유의한 차이가 나타났다. P300잠재기에서는 운동강도의 주효과에 F(3,15)=2.78(p<0.10의 차이가 나타났다. 운동강도의 하위검증에서는 40VO2max와 60%VO2max사이에 p<0.05, 40VO2max와 80%VO2max사이에 p<0.01의 유의한 차이가 나타났다. 따라서 40VO2max조건에서의 P300잠재기는 60%VO2max 및 80%VO2max운동조건보다 단축하는 경향이 나타났다(p<0.01). [결론]외부로부터 자극에 대한 반응선택을 촉진하는 감각·자극처리에 있어서 지각·인지기능의 속도에 대해서 운동전후 및 운동강도 사이에 차이는 나타나지 않았다.
Abstract
Activity change in the central nerve system according to the cardio exercise level. [PURPOSE] The purpose of this study is to examine any changes in perceptive & cognitive functions through maximal exercise & 3-step sub-maximal exercise with equally set total exercise amount. In addition, it is to examine the degree of difference in exercise intensive in the case of showing changes in cognitive function. [METHOD] In this study, 6 male university students were selected as research subjects. In terms of exercise intensity, it was set in 4 steps of 40VO2max, 60%VO2max and 80%VO2max sub-maximal exercise and 100%VO2max maximal exercise based on the maximum oxygen intake amount of subject (VO2max). In addition, exercise time for each intensity was set with equal exercise intensity x time (min.) by considering the 100%VO2max intensity of reaching total exhaustion. [RESULTS] There was a trend of increasing P300 amplitude after exercise. In terms of the main effect of pre- & post-exercise and main effect of deduction area revealed meaningful differences of F(1,5)=29.52, p<0.05, F(2,10)=18.8 p<0.01. As for the sub-verification of deduction area, meaningful differences were shown with Fz & Cz and p<0.05 between Fz & Cz and p<0.01 between Fz & Pz. In the sub-verification of exercise intensity, meaningful differences of p<0.05 was shown between 60%VO2max & 100%VO2max. In the P300 latency period, it showed differences of F(3,15)=2.78(p<0.10) in the main effect of exercise intensity. In the sub-verification of exercise intensity, meaningful differences of p<0.05 between 40VO2max & 60%VO2max, and p<0.01 between 40VO2max & 80%VO2max were shown. In the P300 latency period of 0VO2max condition, it showed a trend of shortening compared to 60%VO2max & 80%VO2max exercise conditions. [CONCLUSION] In the sensory & stimulation processing of promoting response selection for external stimulation, no differences were shown between the pre- & post-exercise and exercise intensity regarding the speed of perception & cognitive functions.
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