심폐체력이 전두엽의 집행기능에 미치는 영향: ERP를 통한 연구 = The influence of aerobic capacity on frontally-m,ediated executive function: an ERP study

국문 초록 (Abstract)

본 연구의 목적은 전두엽의 발달이 진행되고 있는 만 20세의 성인을 대상으로 심폐체력이 대뇌피질 반응 (P300진폭과 잠재기)에 미치는 영향을 조사하고, 심폐체력의 효과가 전두엽에 의해 통제되는 집행기능과제에 선택적으로 나타나는 지를 규명하는 것이다. 연구대상자는 총 60명의 건강한 남자 대학생으로, 주의집중과제와 집행기능 과제 수행 중 Fz, Cz, Pz 영역에서 뇌파가 측정되었고 YMCA 프로토콜을 통해 최대산소섭취량이 산출되었다. 두 과제 수행 중 심폐체력이 P300 진폭과 잠재기에 미치는 영향을 조사하기 위해 위계적 회귀분석과 ANCOVA를 실시하였다. 연구결과 심폐체력은 집행기능과제에서 과제 수행과 밀접히 관련된 뇌 영역인 Fz와 Cz의 P300 진폭과 정적으로 연관되어 있었다. 또 P300 잠재기는 집행기능과제 수행 중 Fz, Cz, Pz 영역에서, 주의집중 과제에서는 Pz 영역에서 저 심폐체력 집단과 비교해서 심폐체력이 높은 집단에게 짧게 나타났다. 이러한 결과는 심폐체력이 클수록 과제관련 뇌 영역에 대한 주의할당이 크고 뇌 활성화의 효율성이 증가할 뿐 아니라, 과제수행 시 정보처리 속도가 빠르며, 이러한 심폐체력의 효과는 집행기능 과제에서 크다는 것을 보여주는 것이다.

다국어 초록 (Multilingual Abstract)

The purpose of the present study is to examine the relationship between aerobic capacity and cerebral cortical responses in young male adult whose prefrontal lobe is in the middle of development. It was also examined to see if this relationship is stronger in frontally-mediated executive function task, relative to attentional task. Participants were 60 college age young healthy male (M=19.89 yrs) who underwent fitness testing to estimate aerobic capacity. Cognitive function was assessed by neuroelectrical response, an event-related potential (ERP) during executive task and non-executive task. Electroencephalogram (EEG) was recorded at Fz, Cz, and Pz during cognitive challenges. As the result, aerobic capacity was positively associated with P300 amplitude at Fz and Cz during executive function task. P300 latencies at Fz, Cz, Pz during executive challenge and at Pz during non-executive task was shorter in high-fit participants, relative to those who are low-fit. The current finding revealed that aerobic capacity yields neuro-electrical benefit with increasing allocation of attentional resources and making cognitive-processing speed short. The benefit of aerobic capacity was greater during frontally-mediated executive challenge.

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