PHYSICAL EXERCISE AND FREE RADICALS
نویسندگان
چکیده
منابع مشابه
Free radicals, exercise and antioxidant supplementation.
Although conflicting data exist, the preponderance of available information suggests that physical exercise promotes an increase in free-radical generation. However, few studies have actually measured exercise-induced free radicals directly, primarily because of a lack of sophisticated methodologies to measure this phenomenon. Instead, researchers have relied heavily on the measurement of lipid...
متن کاملExercise, free radicals and oxidative stress.
This article reviews the role of free radicals in causing oxidative stress during exercise. High intensity exercise induces oxidative stress and although there is no evidence that this affects sporting performance in the short term, it may have longer term health consequences. The mechanisms of exercise-induced oxidative stress are not well understood. Mitochondria are sometimes considered to b...
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The interest about the mechanisms of generation and adaptation of oxygen free radicals (OFR) to exercise has increased significantly from the demonstration of its relation with the oxygen intake. The OFR are formed through the incomplete reduction of oxygen, generating species presenting high reactivity to other biomolecules, especially lipids and proteins of the cell membranes and even DNA. Th...
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Free radical can be defined as a molecule or molecular fragments containing unpaired electron in the outer orbital, which react with nearby molecules to get stability. There are two types of them in the body: oxygen free radicals and nitrogen free radicals. Our body has an antioxidant defense system which prevents accumulation of these radicals. There is a balance between free radical produc...
متن کاملExercise-induced brachial artery vasodilation: role of free radicals.
Originally thought of as simply damaging or toxic "accidents" of in vivo chemistry, free radicals are becoming increasingly recognized as redox signaling molecules implicit in cellular homeostasis. Indeed, at the vascular level, it is plausible that oxidative stress plays a regulatory role in normal vascular function. Using electron paramagnetic resonance (EPR) spectroscopy, we sought to docume...
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ژورنال
عنوان ژورنال: Japanese Journal of Physical Fitness and Sports Medicine
سال: 2001
ISSN: 0039-906X,1881-4751
DOI: 10.7600/jspfsm1949.50.389