What is Normal Sleep in the Elderly?

Long Daytime Napping Is Associated with Increased Adiposity and Type 2 Diabetes in an Elderly Population with Metabolic Syndrome

Research examining associations between objectively-measured napping time and type 2 diabetes (T2D) is lacking. This study aimed to evaluate daytime napping in relation to T2D and adiposity measures in elderly individuals from the Mediterranean region. A cross-sectional analysis of baseline data from 2190 elderly participants with overweight/obesity and metabolic syndrome, in the PREDIMED-Plus trial, was carried out. Accelerometer-derived napping was measured. Prevalence ratios (PR) and 95% confidence intervals (CI) for T2D were obtained using multivariable-adjusted Cox regression with constant time. Linear regression models were fitted to examine associations of napping with body mass index (BMI) and waist circumference (WC). Participants napping ≥90 min had a higher prevalence of T2D (PR 1.37 (1.06, 1.78)) compared with those napping 5 to <30 min per day. Significant positive associations with BMI and WC were found in those participants napping ≥30 min as compared to those napping 5 to <30 min per day. The findings of this study suggest that longer daytime napping is associated with higher T2D prevalence and greater adiposity measures in an elderly Spanish population at high cardiovascular risk.

Measuring the sleep of older people: Tool development and use in the evaluation of therapeutic massage

This paper examines the measurement of sleep in nursing care settings, within the context of a pilot study which aimed to assess the effect of therapeutic back massage by nurses on the quality and pattern of sleep in older people in nursing homes and a community hospital. Sleep is an important factor in effective recovery and rehabilitation from illness and for the quality of life of older people in care settings. Issues are raised concerning the measurement of the sleep of older people for the purposes of evaluation research. New instruments are introduced, some building on existing tools. The value of self-reported and observed sleep data are discussed. Issues of the feasibility and rigour of these instruments are examined and recommendations are made for their further refinement and use.

Redesigning nighttime care for personal care residents

This study investigated the effects of non-disruptive nighttime care for residents in a personal care setting. The sample consisted of 18 personal care home residents in an urban, 388-bed, long-term care facility located in Winnipeg, Manitoba, Canada. The study used a quasi-experimental, single-arm design, exposing all residents to both intervention and control conditions. Independent variables were the current nighttime routine of regular rounds to turn and change residents, and a non-disruptive plan of care in which residents were checked hourly by staff and necessary care was provided when they were awake. Outcome variables included total sleep from evening bedtime to morning awakening, longest period of uninterrupted sleep at night, amount of time spent sleeping during the day, self-reported restfulness of cognitively intact residents, and skin condition. Findings suggested that the non-disruptive nighttime care routine increased total sleep by an average of 30 minutes a night for each resident. The amount of uninterrupted sleep increased by approximately 45 minutes with the new routine. No significant differences were noted in the amount of time spent sleeping during the day. There was no evidence of skin breakdown during any phase of the study. Clinical implications of this study demonstrate a need for gerontological nurses to re-evaluate nighttime care routines in personal care settings.

How age and daytime activities are related to insomnia in the general population: consequences for older people

OBJECTIVES

To determine the role of activity status and social life satisfaction on the report of insomnia symptoms and sleeping habits.

DESIGN

Cross-sectional telephone survey using the Sleep-EVAL knowledge base system.

SETTING

Representative samples of three general populations (United Kingdom, Germany, and Italy).

PARTICIPANTS

13,057 subjects age 15 and older: 4,972 in the United Kingdom, 4,115 in Germany, and 3,970 in Italy. These subjects were representative of 160 million inhabitants.

MEASUREMENTS

Clinical questionnaire on insomnia and investigation of associated pathologies (psychiatric and neurological disorders).

RESULTS

Insomnia symptoms were reported by more than one-third of the population age 65 and older. Multivariate models showed that age was not a predictive factor of insomnia symptoms when controlling for activity status and social life satisfaction. The level of activity and social interactions had no influence on napping, but age was found to have a significant positive effect on napping.

CONCLUSIONS

These results indicate that the aging process per se is not responsible for the increase of insomnia often reported in older people. Instead, inactivity, dissatisfaction with social life, and the presence of organic diseases and mental disorders were the best predictors of insomnia, age being insignificant. Healthy older people (i.e., without organic or mental pathologies) have a prevalence of insomnia symptoms similar to that observed in younger people. Moreover, being active and satisfied with social life are protective factors against insomnia at any age.

The sleep of older people in hospital and nursing homes

Disturbed sleep can affect personal wellbeing and impede the rehabilitation and recovery of older people from illness. This paper reports the findings of a pilot study which included examination of sleep quality and sleep patterns of older people in community hospital and nursing home settings. A marked proportion of older people reported sleeping well in nursing care settings, and those in nursing homes slept better than those in the community hospital. The main causes of sleep disturbance in both settings were: needing to go to the toilet, noise, pain, and discomfort; a similar pattern was seen across the different settings. No discernible difference was found in quality of sleep and whether patients felt rested or not between those patients on hypnotic medication and those who were not. The implications of the findings for practice and future research are discussed.

Are sleep disorders hereditary? A questionnaire survey of elderly persons about themselves and their parents

The aim of the present study was to investigate the occurrence of sleep complaints in an elderly population in relation to the sleep pattern in their parents. The study is based on a postal questionnaire, which was sent to 10,216 elderly persons in northern Sweden. The mean (s.d.) ages of the participating men and women were 73.0 (6.0) and 72.6 (6.7) years, respectively. Among the men whose parents had no sleep problems, a good night's sleep was reported by 11.1%, and among those whose parents both had such problems, this proportion was 18.9%. The corresponding figures for women were 20.6% and 60.0%, respectively. Restless sleep, frequent awakening, difficulty in getting to sleep again after waking up in the night as well as tiredness at night but with inability to get to sleep was more common in both sexes if either of the parents had difficulty in sleeping, and even more common if such problems had occurred in both parents. Also visits to doctors because of sleep problems and treatment with sleeping pills were more common in both men and women whose parents had had sleep problems, compared with those whose parents had been good sleepers. Thus, a poor sleep was more common in elderly persons if their parents had sleep problems, compared with those whose parents had been good sleepers. The results suggest that hereditary factors could be an underestimated cause of sleep disorders in the elderly.

24-hour sleep/wake patterns in healthy elderly persons

The purpose of this study was to examine the 24-hour sleep/wake patterns of healthy elderly persons. Data was obtained from 14 elderly subjects who wore a wrist actigraph for 48 hours and completed an activity diary during the monitoring period. Although subjects spent slightly more than 7.5 hours in bed at night, they were asleep for just over 6 hours. Subjects did not have trouble falling asleep, but once asleep, had trouble remaining asleep. All subjects took one or more naps during the recording period, but daytime naps composed only a small fraction of their total sleep time. Total duration of daytime sleep averaged 59.8 minutes.

Health of the elderly with regard to sleep and nocturnal micturition

A questionnaire study was carried out among pensioners in Jämtland County, Sweden. The questionnaire was answered by 1,115 persons, representing a response rate of 74%. It covered various aspects of health, with emphasis on sleep, fatigue, thirst, and other symptoms that may interfere with night-time sleep. The data were analysed with regard to the stated number of night-time disturbances due to urination. Nocturnal micturition was often associated with increased sleep disorders, a poorer quality of sleep, increased thirst, particularly at night, and increased fatigue in the daytime. All the relationships were clearer in women than in men. There was no relationship between reported enuresis in childhood and an increased frequency of voiding when the subject became older.

[Sleep in normal aging]

Sleep in the elderly is characterized by a decrease in the ability to stay asleep resulting in a more fragmented sleep. Spindles are less frequent and less ample, shorter, without an increase during the night contrary young subjects. Delta activity in slow wave sleep is decreased in the 0.5-2 Hz frequency band only. REM sleep occurs earlier the first REM period duration increases. The REM sleep appearance is almost uniform during the night. REMs density does not increase toward the end of the sleeping period. The sleep-wake circadian rhythm is advanced (bedtime and morning awakening occur earlier). The temperature rhythm is also advanced. The rise in temperature after the nadir begins earlier for females and the initial ascent is more rapid. This explains why women wake up earlier and sleep for shorter durations than men. The nocturnal and diurnal mean plasmatic norepinephrine values increase. The rhythm of cortisol secretion is advanced. The GH and melatonin peaks of secretion are decreased. The acrophase of melatonin rhythm is occurring later in the elderly. These results suggest a weakening of circadian structure in the course of aging and an altered relationship between the pacemakers driving melatonin and cortisol circadian rhythms.