Muscle Spectra Obtained from Soleus and Vastus Lateralis
نویسندگان
چکیده
Figure 2. H spectra obtained with LASER sequence from 8 mL voxels from the soleus (TR = 4 s, TE = 37 ms, 64 scans) and vastus lateralis (TR = 4 s, TE = 52 ms, 64 scans) from three different ankle orientations, 45°, 0°, -20°. The spectra are shown processed with 2 Hz Lorentzian to Gaussian line broadening and no baseline correction. The vertical scale was adjusted between different parts of spectra. IMCL = intramyocellular lipids, EMCL = extramyocellular lipids, Cr3 = CH3 group of creatine, TMA = trimethylammonium containing compounds, Cr2 = CH2 group of creatine 3.8 3.4 3.0 ppm 1.8 1.4 1.0 0.6 ppm 8.0 7.6 7.2 6.8 ppm 3.8 3.4 3.0 ppm 1.8 1.4 1.0 0.6 ppm 8.0 7.6 7.2 6.8 ppm 0o
منابع مشابه
Cytochrome c promoter activity in soleus and white vastus lateralis muscles in rats.
Cytochrome c protein and mRNA are 300 and 100% higher, respectively, in the soleus muscle (predominantly slow-twitch oxidative) than the white vastus lateralis (predominately fast-twitch glycolytic) muscle (W. W. Winder, K. M. Baldwin, and J. O. Holloszy. Eur. J. Biochem. 47: 461-467, 1974; M. M. Lai and F. W. Booth. J. Appl. Physiol. 69: 843-848, 1990). However, the mechanisms controlling thes...
متن کاملHuman vastus lateralis and soleus muscles display divergent cellular contractile properties.
The purpose of this study was to investigate potential differences in single-fiber contractile physiology of fibers with the same myosin heavy chain isoform (MHC I and MHC IIa) originating from different muscles. Vastus lateralis (VL) and soleus biopsies were obtained from 27 recreationally active females (31 +/- 1 yr, 59 +/- 1 kg). A total of 943 single fibers (MHC I = 562; MHC IIa = 301) were...
متن کاملMitochondrial abnormalities are more frequent in muscles undergoing sarcopenia.
The hypothesis that the accumulation of electron transport system (ETS) abnormalities and sarcopenia are linked was investigated. Vastus lateralis, soleus, and adductor longus muscles were studied in 5-, 18-, and 36-mo-old male Fischer 344 x Brown Norway F(1) hybrid rats. A significant decrease in soleus and vastus lateralis muscle mass was observed with age. Adductor longus was resistant to mu...
متن کاملHuman soleus and vastus lateralis muscle protein metabolism with an amino acid infusion.
The calf muscles, compared with the thigh, are less responsive to resistance exercise in ambulatory and bed-rested individuals, apparently due to muscle-specific differences in protein metabolism. We chose to evaluate the efficacy of using amino acids to elevate protein synthesis in the soleus, because amino acids have been shown to have a potent anabolic effect in the vastus lateralis. Mixed m...
متن کاملArtificial gravity maintains skeletal muscle protein synthesis during 21 days of simulated microgravity.
We sought to determine the effects of longitudinal loading (artificial gravity) on skeletal muscle protein kinetics in 15 healthy young males after 21 days of 6 degrees head-down tilt bed rest [experimental treatment (Exp) group: n = 8, 31 +/- 1 yr; control (Con) group; n = 7, 28 +/- 1 yr, means +/- SE]. On days 1 and 21 of bed rest, postabsorptive venous blood samples and muscle biopsies (vast...
متن کامل