2009
Specific Relation Between Abdominal Obesity and Early-Phase Hyperglycemia Is Modulated by Hepatic Insulin Resistance in Healthy Older Women
DiPietro L, Dziura J, Yeckel CW. Specific Relation Between Abdominal Obesity and Early-Phase Hyperglycemia Is Modulated by Hepatic Insulin Resistance in Healthy Older Women. Diabetes Care 2009, 33: 165-167. PMID: 19808930, PMCID: PMC2797964, DOI: 10.2337/dc09-1365.Peer-Reviewed Original ResearchConceptsHepatic insulin resistanceOral glucose tolerance testAbdominal obesityGlucose tolerance testHealthy older womenInsulin resistanceOlder womenTolerance testLow-dose insulin infusionHepatic glucose productionGlucose excursionsInsulin infusionPlasma glucoseAbdominal circumferenceInsulin concentrationsInsulin suppressionMin postchallengeObesityGlycemic responseClamp techniqueGlucose productionWomenHyperglycemiaProduction suppressionPostchallenge
2005
Exercise and improved insulin sensitivity in older women: evidence of the enduring benefits of higher intensity training
DiPietro L, Dziura J, Yeckel CW, Neufer PD. Exercise and improved insulin sensitivity in older women: evidence of the enduring benefits of higher intensity training. Journal Of Applied Physiology 2005, 100: 142-149. PMID: 16141382, DOI: 10.1152/japplphysiol.00474.2005.Peer-Reviewed Original ResearchConceptsHigh-intensity exercise trainingIntensity exercise trainingExercise trainingAerobic trainingInsulin sensitivityExercise volumeOlder womenGlucose utilizationModerate-intensity aerobic trainingTwo-step euglycemic-hyperinsulinemic clampInsulin-stimulated glucose utilizationHigh-intensity aerobic trainingDual-energy X-ray absorptiometryHigher insulin doseLower insulin doseHealthy older womenEuglycemic hyperinsulinemic clampLow-intensity exerciseTotal body fatAdipose tissue lipolysisImproved glucose utilizationX-ray absorptiometrySuppression of lipolysisFinal exercise boutInsulin-stimulated suppression
2004
Postexercise protein metabolism in older and younger men following moderate-intensity aerobic exercise
Sheffield-Moore M, Yeckel CW, Volpi E, Wolf SE, Morio B, Chinkes DL, Paddon-Jones D, Wolfe RR. Postexercise protein metabolism in older and younger men following moderate-intensity aerobic exercise. AJP Endocrinology And Metabolism 2004, 287: e513-e522. PMID: 15149953, DOI: 10.1152/ajpendo.00334.2003.Peer-Reviewed Original ResearchConceptsModerate-intensity aerobic exercisePOST-EXFractional synthesis rateAerobic exerciseOlder menYoung menMixed muscle fractional synthesis rateMuscle metabolismRegular aerobic exerciseAcute aerobic exerciseMuscle fractional synthesis rateProtein metabolismArteriovenous blood samplesMuscle protein turnoverSingle boutAcute effectsMuscle biopsyPhenylalanine kineticsBlood samplesPlasma protein synthesisModerate walkingMenShort-term increasePlasma proteinsExercise
1998
Exogenous amino acids stimulate net muscle protein synthesis in the elderly.
Volpi E, Ferrando A, Yeckel C, Tipton K, Wolfe R. Exogenous amino acids stimulate net muscle protein synthesis in the elderly. Journal Of Clinical Investigation 1998, 101: 2000-2007. PMID: 9576765, PMCID: PMC508787, DOI: 10.1172/jci939.Peer-Reviewed Original ResearchConceptsMuscle protein synthesisAmino acid infusionFractional synthetic rateAmino acid transportAcid infusionMuscle massNet muscle protein synthesisMuscle protein fractional synthetic rateMuscle protein anabolismAcid transportProtein fractional synthetic rateHealthy elderly individualsIntake of proteinAmino acid kineticsAmino acid deliveryAmino acid availabilityAcid availabilityProtein synthesisIntravenous infusionMuscle biopsyElderly individualsProtein anabolismVastus lateralisPostabsorptive stateAmino acid mixture