Blood lipid peroxides and muscle damage increased following intensive resistance training of female weightlifters

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Title:	Blood lipid peroxides and muscle damage increased following intensive resistance training of female weightlifters
Authors:	劉珍芳 Liu JF;Chang WY;Chan KH;Tsai WY;Lin CL;Hsu MC
Contributors:	保健營養學系
Date:	2005
Issue Date:	2009-11-23 12:34:18 (UTC+8)
Abstract:	The aim of this study was to examine changes in muscle cell injury and antioxidant capacity of weightlifters following a 1-week intensive resistance-training regimen. Thirty-six female subjects participated in this study, and their ages ranged from 18 to 25 years. The sample group included 19 elite weightlifters with more than 3 years of weightlifting training experience, while the control group comprised 17 non-athletic individuals. Compared with non-athletes, weightlifters had significantly lower glutathione peroxidase activity and plasma vitamin C concentrations. Weightlifters also had significantly higher malondialdehyde + 4-hydroxy 2-(E)-nonenal (MDA+4-HNE) and thiobarbituric acid-reactive substance (TBARS) levels and creatine kinase (CK) activity. For weightlifters, the plasma vitamin E level and the activity of superoxide dismutase (SOD) decreased, and CK activity increased significantly (P < 0.05) after a 1-week intensive resistance-training regimen. Both the TBARS levels and CK activity returned to values of pre-intensive training after a 2-day rest. The MDA+4-HNE level strongly correlated with CK activity in weightlifters (P < 0.05). In conclusion, both long-term exercise training and 1 week of intensive resistance training resulted in increased oxidative stress and cell injury in female weightlifters. Furthermore, proper rest after intensive training was found to be important for recovery.
Relation:	Ann New York Acad Sci.(1042):255-261.
Appears in Collections:	[School of Nutrition and Health Sciences] Periodical Articles

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