Acidosis, LacticAcidosisPhysical ExertionExerciseMELAS SyndromeExercise TestAcidosis, RespiratoryPhenforminAcidosis, Renal TubularExercise TherapyRNA, Transfer, LeuLactatesLactic AcidMitochondrial EncephalomyopathiesDichloroacetic AcidExercise TolerancePyruvate Dehydrogenase Complex Deficiency DiseaseMetforminDiabetic KetoacidosisMitochondrial MyopathiesSodium BicarbonateAcid-Base EquilibriumOxygen ConsumptionMERRF SyndromeDNA, MitochondrialAlkalosisMitochondrial DiseasesHydrogen-Ion ConcentrationBicarbonatesLeigh DiseaseMuscle, SkeletalPhysical EnduranceStavudineThiamine DeficiencyCarbon DioxidePyruvate Dehydrogenase (Lipoamide)Hyperglycemic Hyperosmolar Nonketotic ComaThyroid CrisisBiguanidesMitochondria, MuscleFatal OutcomeHypoglycemic AgentsBarth SyndromeMuscular DiseasesCytochrome-c Oxidase DeficiencyEnergy MetabolismRhabdomyolysis