2023
Rest-activity rhythms predict time to hospitalizations and emergency department visits among participants in a randomized control of adults with heart failure and insomnia
Jeon S, Conley S, Hollenbeak C, O'Connell M, Wang Z, Tocchi C, Redeker N. Rest-activity rhythms predict time to hospitalizations and emergency department visits among participants in a randomized control of adults with heart failure and insomnia. Sleep Medicine 2023, 108: 1-7. PMID: 37301192, PMCID: PMC10336725, DOI: 10.1016/j.sleep.2023.05.019.Peer-Reviewed Original ResearchConceptsRest-activity rhythmED visitsHeart failureEmergency departmentCircadian quotientEarly hospitalizationWrist actigraphyEarly ED visitsChronic heart failureLow ejection fractionFirst cardiac eventCox proportional hazardsEffects of insomniaCognitive behavioral therapyComposite eventsNYHA classHF patientsCardiac eventsCPAP useSevere painEjection fractionMale sexSevere insomniaHospitalizationInsomnia severity
2020
Day-to-day Relationships between Physical Activity and Sleep Characteristics among People with Heart Failure and Insomnia
Ash G, Jeon S, Conley S, Knies AK, Yaggi HK, Jacoby D, Hollenbeak CS, Linsky S, O’Connell M, Redeker NS. Day-to-day Relationships between Physical Activity and Sleep Characteristics among People with Heart Failure and Insomnia. Behavioral Sleep Medicine 2020, 19: 602-614. PMID: 33048589, PMCID: PMC8496686, DOI: 10.1080/15402002.2020.1824918.Peer-Reviewed Original ResearchConceptsNext-day physical activityHeart failureTotal sleep timePhysical activityCounts/minuteSleep characteristicsSleep timeSleep variablesNYHA class IIAdvanced heart failureStable heart failureDaytime physical activityBody mass indexCommunity-dwelling adultsWrist actigraphy recordingsCognitive behavioral therapyNYHA classHF classMass indexSleep improvementActigraphy recordingsLong sleepBehavioral therapyClass IIInsomniaRest-activity rhythms, daytime symptoms, and functional performance among people with heart failure
Jeon S, Conley S, Redeker NS. Rest-activity rhythms, daytime symptoms, and functional performance among people with heart failure. Chronobiology International 2020, 37: 1223-1234. PMID: 32588662, PMCID: PMC7529895, DOI: 10.1080/07420528.2020.1779280.Peer-Reviewed Original ResearchConceptsRest-activity rhythmStable heart failureHeart failureDaytime symptomsCircadian quotientPoorer New York Heart Association classNew York Heart Association classHF disease management programFunctional performanceBetter NYHA classChronic heart failureMinute walk testDisease management programsLess sleep fragmentationHF independentUnattended polysomnographyNYHA classGreater comorbidityAssociation classWalk testIntra-daily variabilityFunctional outcomePhysical functionPoor functionSleep fragmentation