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以昆明种系雄性小白鼠为实验对象，研究了低频磁场对系统耐力训练小鼠腓肠肌和肝脏蛋白质代谢的影响。将小鼠随机分为四组，即安静组（Ｓｅｄ）、运动组（Ｔｍ）、安静加低频磁场组（ＳＬＭ）、运动加低频磁场组（ＴＬＭ）。每组又分为Ⅰ和Ⅱ两小组，Ⅰ为安静状态处理组，Ⅱ为力竭运动后即刻处理组。部分ＴｍⅡ组和ＴＬＭⅡ组小鼠力竭运动后按其原处理方式恢复２４小时后处理，设为２４小时恢复组。Ｔｍ、ＴＬＭ两组均以４０分钟／日开始训练，以１０分钟／周递增负荷游泳训练３周。ＴＬＭ组每天运动后曝磁３０分钟，ＳＬＭ组每天相应时间曝磁３０分钟，Ｓｅｄ组和Ｔｍ组分别在相应时间处于无磁场的相似环境中３０分钟。结果发现ＳＬＭ组、ＴＬⅠ组的肝脏蛋白质含量分别高于相应的Ｓｅｄ组、ＴｍＩ组，且前二者差异显著（Ｐ＜０．０５）；２４小时恢复后，ＴＬＭ组的肝脏蛋白质含量显著高于Ｚ４小时恢复后的Ｔｍ组和ＴＬＭＩ组（Ｐ＜０．０１）；ＳＬＭＩ组、２４小时恢复后ＴＬＭ组肝脏ＤＮＡ、ＮＭ含量，分别显著高于ＳｅｄＩ组、ＴＬＭＩ组和２４小时恢复的Ｔｍ组（Ｐ＜０．０１：Ｐｌ：０．仍）０ｎｔＭＤ组腓肠肌蛋白质含量分别显著低于ＴｕＭＩ组（Ｐ＜０．０１）和ＴｍＤ组（Ｐ＜０．０５）：２?
The effects of low frequency magnetic field on gastrocnemius muscle and hepatic protein metabolism in mice with endurance training were studied in Kunming male mice. The mice were randomly divided into four groups: Sed, Tm, SLM and TLM. Each group was divided into two groups Ⅰ and Ⅱ, Ⅰ for the quiet state treatment group, Ⅱ for the exhaustive exercise immediately after treatment group. Part of Tm Ⅱ group and TLM Ⅱ group mice exhausted after exercise according to the original treatment 24 hours after treatment, set to 24 hours recovery group. Both Tm and TLM groups started training at 40 minutes / day, and three-week training at increasing load for 10 minutes / week. The TLM group was exposed to magnetism for 30 minutes every day after exercise. The SLM group was exposed to magnetism for 30 minutes every day correspondingly. The Sed group and the Tm group were respectively exposed to similar conditions without magnetic field for 30 minutes at the corresponding time. The results showed that the liver protein content in SLM group and TLI group were higher than those in Sed group and TmI group respectively (P <0.05), and the liver protein content in TLM group was significantly higher than that in TLM group The levels of DNA and NM in the TLM group were significantly higher in the TLMI group than those in the SedI group, TLMI group and Tm group (P <0.01) after 24 hours recovery in TMI group and TLMI group (P <0.01) The protein content of gastrocnemius in 0ntMD group was significantly lower than that in TuMI group (P <0.01) and TmD group (P <0.01)