PubertyHypertrophyPuberty, PrecociousPuberty, DelayedHypertrophy, Left VentricularSexual MaturationCardiomegalyHypertrophy, Right VentricularMyocardiumMyocytes, CardiacOrgan SizeBody WeightGonadotropin-Releasing HormoneKisspeptinsEchocardiographyVentricular RemodelingHeart VentriclesLuteinizing HormoneCardiomyopathy, HypertrophicHypertensionCell EnlargementAge Determination by SkeletonHeartRats, Sprague-DawleyTestosteroneFibrosisAtrial Natriuretic FactorBlood PressureBody HeightCell SizeDisease Models, AnimalAngiotensin IIAnimals, NewbornCalcineurinReproductionMice, TransgenicAgingMyocardial ContractionTestisRats, WistarSignal TransductionEstrusHeart FailureCells, CulturedTime FactorsAge FactorsGrowth DisordersRNA, MessengerHypogonadismFollicle Stimulating HormoneOvaryAdenoidsSex CharacteristicsEstradiolMyosin Heavy ChainsRats, Inbred SHRMonocrotalineMice, Inbred C57BLMice, KnockoutEndomyocardial FibrosisGrowthVentricular Function, LeftVentricular PressureRats, Inbred WKYHemodynamicsInsulin-Like Growth Factor IGonadotropinsElectrocardiographyPhenylephrineHypothalamic DiseasesAdolescent DevelopmentPregnancyGene Expression RegulationCardiomegaly, Exercise-InducedOvulationGene ExpressionGrowth HormoneCattleEndothelin-1IsoproterenolMuscle ProteinsSexual DevelopmentAdrenarcheNeurokinin BDrug ImplantsAntihypertensive AgentsFertilityAnalysis of VarianceWeaningBone DevelopmentDiastoleConstrictionRandom AllocationNeurosecretory SystemsGonadal Steroid HormonesHypertension, PulmonaryVentricular Dysfunction, LeftHypothalamusAortic Valve StenosisFibrous Dysplasia, Polyostotic