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NTIS 바로가기생명과학회지 = Journal of life science, v.20 no.10 = no.126, 2010년, pp.1476 - 1482
고기준 (대구미래대학 생활체육과)
The purpose of the present investigation was to evaluate the effects of swimming training on response of lipid peroxide (MDA) and superoxide dismutase (SOD) enzyme activity of hyperlipidemic rats. Twenty-five male SD rats (6 weeks old) were randomly divided into a control group and 4 swimming groups...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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혈청 슈퍼옥사이드 디스무타제(SOD) 활성의 측정은 Oyanagui의 방법에 따라 측정되었는데, 구체적으로 어떤 절차를 거쳤는가? | 혈청 슈퍼옥사이드 디스무타제(SOD) 활성의 측정은 Oyanagui [40]의 방법에 따라 정량하였다. 혈청을 인산칼륨 완충액으로써 100배 희석하여 그 중의 100 μl를 시험관에 넣고 여기에 증류수 500 μl, 시약 A (3 mM hydroxylamine/3 mM hypoxanthine) 200 μl 및 시약 B [7.5 mU/ml xanthine oxidase(XOD) with 0.1 mM EDTA-2Na] 200 μl를 넣고 vortex에서 잘 혼합한 다음, 37℃ 수조에서 40분간 정치한다. 반응액에 시약 C (300 mg of sulfanilic acid/5.0 mg N-1-naphthyl-ethylenediamine in 500 ml of 16.7% acetic acid) 2.0 ml를 넣어 잘 혼합하여 실온에서 20분 동안 정치한 다음 550 nm에서 흡광도를 측정하여 표준검량선에 준하여 혈청 중의 superoxide dismutase 활성을 측정하였다. | |
과도한 훈련과 부적절한 운동강도에 의한 산화적 스트레스는 어떤 영향을 끼치는가? | 규칙적이고 적당한 운동은 신체의 대사기능을 원활하게 하고 면역기능을 강화시켜 건강증진에 도움을 줄 뿐만 아니라 스트레스 해소와 체중조절, 성인병 예방 등 생활에 활력을 주지만, 적절한 운동강도나 운동시간을 벗어난 격렬한 운동은 인체에 부정적 영향을 미칠 수 있다는 임상연구들이 보고되고 있다[56]. 즉 과도한 훈련과 부적절한 운동강도에 의해 산화적 스트레스(oxidative stress)는 체내에 활성산소(reactive oxygen)를 발생시켜 각종 대사물질과 면역계, 내분비계, 그리고 근육 등에 나쁜 영향을 끼치는 것으로 알려져 있다. | |
활성산소의 생성은 어떤 것에 의해 증가하는가? | 활성산소의 생성은 노화, 질병, 스트레스, 흡연, 음주, 자외선 등에 의해 증가되는데, 특히 대량의 산소섭취가 요구되는 운동에 의해서 직접적인 영향을 받는다[19]. 격렬한 운동 중에는 인체 내에서 대량의 산소 소비와 일시적인 허혈, 재환류 현상 등에 의해 증가된 활성산소는 세포의 변형과 손상을 야기한다. |
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