2007
The role of skeletal muscle insulin resistance in the pathogenesis of the metabolic syndrome
Petersen KF, Dufour S, Savage DB, Bilz S, Solomon G, Yonemitsu S, Cline GW, Befroy D, Zemany L, Kahn BB, Papademetris X, Rothman DL, Shulman GI. The role of skeletal muscle insulin resistance in the pathogenesis of the metabolic syndrome. Proceedings Of The National Academy Of Sciences Of The United States Of America 2007, 104: 12587-12594. PMID: 17640906, PMCID: PMC1924794, DOI: 10.1073/pnas.0705408104.Peer-Reviewed Original ResearchConceptsPlasma high-density lipoprotein concentrationsHigh-density lipoprotein concentrationsHepatic de novo lipogenesisMuscle glycogen synthesisInsulin resistanceInsulin-resistant subjectsPlasma triglyceride concentrationsDe novo lipogenesisMetabolic syndromeAtherogenic dyslipidemiaIL-6Lipoprotein concentrationsTNF-alphaPlasma concentrationsTriglyceride concentrationsNovo lipogenesisGlycogen synthesisIntraabdominal fat volumeSkeletal muscle insulin resistanceSkeletal muscleProtein 4Skeletal muscle glycogen synthesisMuscle insulin resistanceHepatic triglyceride synthesisIntraabdominal obesity
2000
Effects of Caffeine on Muscle Glycogen Utilization and the Neuroendocrine Axis during Exercise1
Laurent D, Schneider K, Prusaczyk W, Franklin C, Vogel S, Krssak M, Petersen K, Goforth H, Shulman G. Effects of Caffeine on Muscle Glycogen Utilization and the Neuroendocrine Axis during Exercise1. The Journal Of Clinical Endocrinology & Metabolism 2000, 85: 2170-2175. PMID: 10852448, DOI: 10.1210/jcem.85.6.6655.Peer-Reviewed Original ResearchConceptsMuscle glycogen contentMuscle glycogen utilizationGlycogen contentCaffeine ingestionNeuroendocrine axisGlycogen utilizationGlycogen-sparing effectFree fatty acid concentrationsBeta-endorphin levelsCaffeine-treated groupExercise-induced glycogen depletionMaximal oxygen consumptionEffects of caffeineHigher muscle glycogen contentPlacebo groupExercise enduranceFatty acid concentrationsPlasma concentrationsNeuroendocrine hormonesCortisol releaseProlonged exerciseGlycogen depletionPlasma lactateNormal valuesThigh muscles