title: Rest-Activity Patterns in Older Adults with Heart Failure and Healthy Older Adults.
abstract: The purpose of this investigation is to examine differences in rest-activity patterns and sleep characteristics in older adults with heart failure (HF) and healthy older adults. The sample included older adults with HF (n = 20) and a reference group of healthy older adults (n = 20). Traditional cosinor analysis was used to assess three parameters of rest-activity from wrist actigraphy data: amplitude (range of activity), mesor (mean activity), and acrophase (time of peak activity). Traditional sleep characteristics were also determined from actigraphy data: total sleep time (TST), sleep latency (SL), sleep efficiency (SE), and wake after sleep onset (WASO). The HF group demonstrated significantly lower mesor and amplitude than the reference group (p < .01). The HF group had significantly greater TST (p < .01), but the groups had similar SE, SL, and WASO. Despite similar sleep characteristics to healthy older adults, overall rest-activity patterns were significantly dampened in those with HF.
authors.forename: Daniel
authors.initials: D
authors.lastname: Liebzeit
authors.forename: Cynthia
authors.initials: C
authors.lastname: Phelan
authors.forename: Chooza
authors.initials: C
authors.lastname: Moon
authors.forename: Roger
authors.initials: R
authors.lastname: Brown
authors.forename: Lisa
authors.initials: L
authors.lastname: Bratzke
mesh_terms: D056044:Actigraphy; D000368:Aged; D016022:Case-Control Studies; D015897:Comorbidity; D015444:Exercise / Q000502:physiology*; D005260:Female; D015577:Geriatric Assessment; D006333:Heart Failure / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012146:Rest / Q000502:physiology*; D012890:Sleep / Q000502:physiology*
keywords: circadian rhythm; geriatrics; heart failure; rest–activity patterns; sleep disturbance