Articlegreen2008

Self‐Reported Napping and Duration and Quality of Sleep in the Lifestyle Interventions and Independence for Elders Pilot Study

Jennifer Lee Picarsic · Nancy W. Glynn · Christopher Alan Taylor · Jeffrey A. Katula · Suzanne E. Goldman · Stephanie A. Studenski +1 more

72 citations0/0 files storedJournal of the American Geriatrics Society

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Abstract

OBJECTIVES: To determine the prevalence of self-reported napping and its association with subjective nighttime sleep duration and quality, as measured according to sleep-onset latency and sleep efficiency. DESIGN: Cross-sectional study. SETTING: Lifestyle Interventions and Independence for Elders Pilot Study. PARTICIPANTS: Community-dwelling older adults (N=414) aged 70 to 89. MEASUREMENTS: Self-report questionnaire on napping and sleep derived from the Pittsburgh Sleep Quality Index (PSQI) scale. RESULTS: Fifty-four percent of participants reported napping, with mean nap duration of 55.0+/-41.2 minutes. Nappers were more likely to be male (37.3% vs 23.8%, P=.003) and African American (20.4% vs 14.4%, P=.06) and to have diabetes mellitus (28% vs 14.3%, P=.007) than non-nappers. Nappers and non-nappers had similar nighttime sleep duration and quality, but nappers spent approximately 10% of their 24-hour sleep occupied in napping. In a multivariate model, the odds of napping were higher for subjects with diabetes mellitus (odds ratio (OR)=1.9, 95% confidence interval (CI)=1.2-3.0) and men (OR=1.9, 95% CI=1.2-3.0). In nappers, diabetes mellitus (beta=12.3 minutes, P=.005), male sex (beta=9.0 minutes, P=.04), higher body mass index (beta=0.8 minutes, P=.02), and lower Mini-Mental State Examination score (beta=2.2 minutes, P=.03) were independently associated with longer nap duration. CONCLUSION: Napping was a common practice in community-dwelling older adults and did not detract from nighttime sleep duration or quality. Given its high prevalence and association with diabetes mellitus, napping behavior should be assessed as part of sleep behavior in future research and in clinical practice.

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References

1989The Pittsburgh sleep quality index: A new instrument for psychiatric practice and research 1995Sleep Complaints Among Elderly Persons: An Epidemiologic Study of Three Communities 1985Insomnia and Its Treatment 2005Association of Sleep Time With Diabetes Mellitus and Impaired Glucose Tolerance 1997Moderate-intensity exercise and self-rated quality of sleep in older adults. A randomized controlled trial 2000Daytime Sleepiness Predicts Mortality and Cardiovascular Disease in Older Adults 1997Moderate-Intensity Exercise and Self-rated Quality of Sleep in Older Adults 1999Daytime consequences and correlates of insomnia in the United States: results of the 1991 National Sleep Foundation Survey. II.

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