Protein Expression of MAFbx/atrogin-1 Immediately After Compression. The protein expression of MAFbx/atrogin-1 in muscle tissues collected immediately after the compression procedure was determined by Western blot. Data are presented as net intensity x resulting band area and expressed in arbitrary units. Result of MAFbx/atrogin-1 was normalized to corresponding β-tubulin signal. Data are presented as mean ± SEM. *p < 0.05, compressed muscle compared to uncompressed control muscle.