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《CHINESE JOURANAL OF SPORTS MEDICINE》 1998-01
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Effect of Low-frequency Magnetic Field on the Metabolism of Protein in Skeletal Muscle and Liver in Mice

 Feng Lianshi,et al National Research Institute of Sports Science  
Effect of low-frequency magnetic field on the metabolism of protein was studied inthis paper.Subjects (Kunming mice) were randomly divided into the sedentary group(Sed),the training group(Trn),The and low-frequency magnetic group(SLM),the training and low-frequency (TLM).Each group was divided into I and Ⅱ subgroups. was sacrificed in the state of quiet and Ⅱ was sacrificedimmediately. after exhaustive exercise.Parts of Trn Ⅱ and TLM Ⅱ were sacrificed 24 hr.after exercise in the way of theiroriginal treatment.Beginning with 40 minutes per day and increasing 10 minutes per week,trn and TLM engaged inswimming training for 3 weeks. After exercise,TLM. was exposed to magnetic field for 30 minutes and SLM was alsoexposed to magnetic field for 30 minutes ever day Sed and Trn were placed in the same environment withour magneticfield for 30 minutes at corres at corresponding time each day.Results showed that the hepatic protein content of SLM and TLMIwas higher than of Sed and Tm.I respectively,and there was significant difference.(P0.05)between SLM I andSed I.Concentration of hepation of hepatic protein,DNA,RNA in,TLM 24 hr.after erercise was significantly(P0.01)hingher.than in TLM I and in Trn 24 hr.after exercise.The hepatic DNA,RNA of SLM was remarkably higher than of Sed(P0.01)Gastrocemius protein of the TLM Ⅱ was significantly lower than that of the TLMI(p0.01) and Tm Ⅱ(p0.05).Concentration of the gastrocemius DNA,RNA in each group had no significant difference.It was suggethat;1) the catabolism of hepatic protein was enhanced during exercise after exposing to magnetic field.Concentrationof hepatic cell RNA and DNA during recovery was significantly increased with low-frequency magnetic field and low- frequency magnetic field could promote the synthesis of hepatic protein during recovery,2) low-frequency field could remardably result in the catabolism of gastrocemius protein during exercise and could provide the advantage for the recovery of muscular protein after 3)There could be a difference in the mechanism of the effect of low. -frequency magnetic field on the metabolism of protein in skeletal muscle and in liver.
【CateGory Index】: R312,
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