2008
Prediction of Cardiovascular Death using a Novel Heart Rate Recovery Parameter
HADLEY DM, DEWEY FE, FREEMAN JV, MYERS JN, FROELICHER VF. Prediction of Cardiovascular Death using a Novel Heart Rate Recovery Parameter. Medicine & Science In Sports & Exercise 2008, 40: 1072-1079. PMID: 18460999, DOI: 10.1249/mss.0b013e318167665a.Peer-Reviewed Original ResearchConceptsDuke treadmill scoreHeart rate recoveryHR increaseCV mortalityVagal toneCardiovascular causesCardiovascular deathPeak exerciseLowest tertileTreadmill scoreCox analysisClinical parametersMaximal exerciseSympathetic influencesExercise indexRate recoveryVagal influencePrognostic measurementMortalityPatientsRecovery variablesNormal scoresScoresExerciseRecovery parameters
2007
Novel predictor of prognosis from exercise stress testing: Heart rate variability response to the exercise treadmill test
Dewey FE, Freeman JV, Engel G, Oviedo R, Abrol N, Ahmed N, Myers J, Froelicher VF. Novel predictor of prognosis from exercise stress testing: Heart rate variability response to the exercise treadmill test. American Heart Journal 2007, 153: 281-288. PMID: 17239690, DOI: 10.1016/j.ahj.2006.11.001.Peer-Reviewed Original ResearchConceptsHeart rate variabilitySquare successive differenceCardiovascular mortalityPrognostic powerHF powerExercise treadmill testingRoot mean square successive differenceFrequency-domain HRV analysisExercise stress testingExercise treadmill testMortality end pointsSuccessive differencesStandard exercise testingHeart rate variability responsesMinutes of recoveryStrongest predictorLow-frequency powerMean square successive differenceHigh-frequency powerR interval dataCardiovascular deathCause mortalityPeak exerciseClinical factorsExercise testing