Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effects of 8 Weeks Resistance Training on Nitric Oxide (NO) Concentration and Mean Arterial Pressure (MAP) in Young Men

건강한 젊은 성인에서 8주 규칙적인 저항성 트레이닝이 산화질소(NO) 농도와 평균동맥압(MAP)에 미치는 영향

  • Published : 2009.05.30
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Abstract

The purpose of this study was to examine the effect of exercise training on nitric oxide (NO) levels, mean arterial pressure (MAP), blood pressure (BP), and heart rate (HR) in college students. 5 subjects were randomly assigned to two experimental groups; an aerobic training group (ATG) and a resistance training group (RTG). In aerobic training, based on measured maximum oxygen consumption rate, 70% exercise intensity was applied and conducted for 60 min. In resistance training, 70% of 1-RM was performed for 90 min. Blood sampling was conducted 3 times during resting state, post-exercise, and after 30 minutes of recovery. The results are as followed. For the post training values of $VO_2max$, % body fat and MAP, there were significant differences in the ATG compared to pre training (p<0.05). However, there were no differences in the RTG between pre and post training. NO increased post training, during rest and at the end of exercise compared to pre training in the ATG (p<0.05). Also, the HR decreased in post training at the end of exercise (p<0.05), however, there were no significant differences in SBP and DBP between pre and post training in the ATG. The HR, SBP and DBP did not change at all in post training compared to pre training in the RTG. In conclusion, an increase in the production of Nitric Oxide (NO) concentration and $VO_2max$, decrease of body fat% and physiological variables (HR, BP, MAP) were shown to be more effective in aerobic training (AT) than resistance training (RT).

결과적으로 본 연구에서 서로 다른 두 집단(RTG, ATG)의 비교시 저항성 트레이닝 집단(RTG)보다 유산소 트레이닝 집단(ATG)에서 산화질소(NO) 농도가 더 높게 나타났으며, 이는 지속적인 유산소 형태의 트레이닝이 간헐적인 저항성 형태의 트레이닝 보다 더 많은 산화질소(NO)가 생성 된다는 것을 알 수 있었다. 또한 심박수(HR)와 혈압(BP), 평균동맵압(MAP)의 감소에도 저항성 트레이닝(RT)보다는 유산소 트레이닝(AT)이 효과적이라는 것을 알 수 있었다. 그러나 유산소 트레이닝(AT)에 비해 저항성 트레이닝(RT)에서 유의하진 않았지만 산화질소(NO) 농도가 증가된 것은 주목할 만한 결과이다. 이러한 결과로 볼 때, 단기간일 지라도 혈관이완 및 자율신경계 도움을 줄 수 있는 것은 유산소 트레이닝(AT) 임을 알 수 있었고 이는 일반적으로 운동을 선택할 시(근력과 근비대를 제외한 운동) 도움을 줄 수 있다고 사료된다. 또한 추후 연구에서는 12주 이상의 장기간의 트레이닝을 통해 저항성 트레이닝(RT)이 혈관이완의 직접적인 척도인 산화질소(NO) 농도에 관한 연구가 필요시 된다.

Keywords

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