Interaction Between Personal Sleep-Wake Rhythms and Psychiatric Hospital Rest-Activity Schedule

Behavioral rhythm, sleep, and mood disturbances in newly admitted nursing home residents.

“…The association between eveningness and social rhythms was only significant at T1 but not T2, which makes sense given that participants' daily routines at home would have been determined by personal factors (T1) such as chronotype and in the nursing home (T2) their routines would be determined more strongly by institutional factors. This is consistent with the work of Floyd (1984).…”

“…Thus, although the present findings do not demonstrate causality, the findings suggest that chronotype predicts the amount of change in sleep timing, such that participants with more eveningness experience a significant change in wake times and that only this group showed an association among social rhythms, interdaily stability and mood, and between chronotype and intradaily variability. The finding of chronotype as a predictor of changes in sleep timing is consistent with the work of Floyd (1984) who studied the relationship between chronotype and sleep timing in psychiatric inpatient versus outpatients. Floyd identified changes in sleep timing for both morning (delays) and evening (advances) types and warned that it should not be assumed that the sleep-wake cycles of morning types would more closely match the daily routine of an institution.…”

“…The use of overall patterns of sleep and wake times may have masked changes in individual rise times such that morning types may have awakened later than usual, and evening types may have awakened earlier than usual, with these opposing changes appearing as no change in the overall distribution. Indeed, evidence from a study of patients in a hospital setting revealed opposing shifts in phase of wake times in morning versus evening types when required to adjust to the rest-activity 31 pattern of the facility (Floyd, 1984). Changes in sleep-wake patterns during nursing home placement should be studied to determine if individuals experience significant phase shifts.…”

“…A study of a psychiatric inpatients as compared to community-dwelling outpatients provides some evidence for an interaction between the schedule of activities determined by a facility versus the sleep-wake cycle of patients (Floyd, 1984). Both morning types and evening types experienced phase changes during institutionalization when compared to their community-dwelling counterparts.…”

Influence of Bright Light during Daytime on Sleep Parameters in Hospitalized Elderly Patients.

“…This disturbance of the sleep pattern was defined as "Disruption of sleep time causes discomfort or interferes with desired lifestyle" (NANDA, 1996). Altered sleep-wake patterns due to the rest-activity schedule of the hospital could phase-shift the times of falling asleep and wake in inpatients (Floyd, 1984). Webster and Thompson (1986) reported that sleeping patterns for inpatients would be influenced by several factors such as age, noise, ambient room temperature, comfort, pain and so on.…”