Napping in Older Adults: a Review of Current Literature

Zhang, Zeyu; Xiao, Xueling; Ma, Weixia; Li, Junxin

doi:10.1007/s40675-020-00183-x

Cited by 41 publications

(27 citation statements)

References 55 publications

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“…Research showed that the prevalence of post-lunch napping increased linearly with age and was inversely related to levels of physical functioning [38,39]. Although the health effects of napping are not well established, a recent review of literature concluded that naps of short duration (e.g., 30 min) are related to better health, while naps of longer duration (e.g., > 90 min) have been linked to adverse cardiovascular and diabetes outcomes, declining cognitive function, and increased mortality [40].…”

Section: Discussionmentioning

confidence: 99%

The role of socio-demographic factors and physical functioning in the intra- and interpersonal variability of older adults’ sedentary time: an observational two- country study

Compernolle

Cerin

Barnett

et al. 2022

Preprint

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Background. Insight into the variability of older adults’ sedentary time is needed to inform future interventions. The aim of this study was to examine the intra- and interpersonal variability in sedentary time, and the moderating role of socio-demographics, physical functioning and geographical location in this variability.Methods. Cross-sectional data from 818 community-dwelling older adults (mean age: 74.8 years; 61.1% female) of the Active Lifestyle and the Environment in Chinese Seniors and Belgian Environmental Physical Activity Study in Seniors were used. An interview questionnaire was administered to collect socio-demographic information. The Short Physical Performance Battery was performed to evaluate physical functioning, and Actigraph GT3X(+) accelerometers were used to estimate sedentary time. Linear mixed models with random intercepts at the neighborhood, person and day levels examined the variability in sedentary time, and the moderating role of socio-demographics, physical functioning and geographical location within this variability. Results. Most of the variance in accelerometry-assessed sedentary time was due to intrapersonal variability across periods of the day (72.4%) followed by interpersonal variability within neighborhoods (25.6%). Those who were older, male, lived in Hong Kong, and experienced a lower level of physical functioning were less sedentary than their counterparts. Sedentary time increased throughout the day, with highest levels of sedentary time observed between 6:00 and 9:00 pm. The patterns of sedentary time across times of the day differed by sex, educational attainment, age, physical functioning and/or geographical location. No significant differences were detected between week and weekend day sedentary time. Conclusions. Researchers developing interventions to encourage older adults to sit less should pay particular attention to the evening hours, if future studies can demonstrate that older adults are also receptive towards sedentary behavior interventions in the evening. The variations in diurnal patterns of sedentary time between population subgroups suggest that personalized just-in-time adaptive interventions might be a promising strategy to reduce older adults’ sedentary time.

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Section: Discussionmentioning

confidence: 99%

The role of socio-demographic factors and physical functioning in the intra- and interpersonal variability of older adults’ sedentary time: an observational two- country study

Compernolle

Cerin

Barnett

et al. 2022

Preprint

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“…Daytime napping is highly recommended and traditionally considered as a healthy lifestyle for compensating for inadequate nocturnal sleep, reducing sleepiness and improving performance and alertness [ 5 – 7 ]. However, the health effects related to daytime napping remain controversial [ 8 – 10 ]. One of our previous studies showed that frequent daytime napping was associated with a higher risk of diabetes [ 11 ], which was also supported by a number of prospective studies [ 4 , 12 – 19 ] and Mendelian randomization [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Obesity indicators as mediators of association between daytime napping and type 2 diabetes mellitus: the Guangzhou Biobank Cohort Study

et al. 2022

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Objective To examine the mediating effect of obesity indicators on the association between daytime napping and type 2 diabetes mellitus (T2DM) qualitatively and quantitatively using baseline data from the Guangzhou Biobank Cohort Study. Methods Twenty-nine thousand three hundred fifty-five participants aged 50+ years were included in this cross-sectional study. Mediation analysis was used to assess the mediating effect of body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR) on the association between daytime napping and T2DM after adjustment for sex, age, education, occupation, smoking status, alcohol use and physical activity. Results The mean (standard deviation) age of participants was 61.5 ( 7.1) years. The prevalence of T2DM and daytime napping was 12.5% and 65.2%, respectively. After adjustment for potential confounders, WC, WHR and WHtR showed partial mediating effects on the association between daytime napping and T2DM, with the proportion (95% confidence interval) of mediation effect being 10.17% (8.14–14.43%), 14.91% (11.95–21.24%) and 9.36% (7.49–13.29%), respectively. No mediating effect of BMI or HC on the association between daytime napping and T2DM was found. Conclusions Our results showed significant mediating effects of WC, WHR and WHtR on the association between daytime napping and T2DM, suggesting that waist circumference management could be important in daytime nappers.

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“…Daytime napping, defined as brief daytime bouts of sleep [1], is a universal [2,3] and highly prevalent behaviour [4], reported in approximately 30% of the British population [5].…”

Section: Introductionmentioning

confidence: 99%

“…Napping has been associated with multiple health outcomes [4,6], including cognitive function [7,8]. Interestingly, napping seems beneficial to performance on certain cognitive tasks [3,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Daytime napping, defined as brief daytime bouts of sleep [1], is a universal [2, 3] and prevalent behaviour [4], reported in approximately 30% of the British population [5]. Napping has been associated with multiple health outcomes [4, 6], including cognitive [7, 8] and structural brain outcomes [9]. Napping seems beneficial to performance on certain cognitive tasks [3, 10, 11].…”

Section: Introductionmentioning

confidence: 99%

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Is there an association between daytime napping, cognitive function and brain volume? A Mendelian randomisation study in the UK Biobank

Paz

Dashti

Garfield

2021

Preprint

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Background: Daytime napping has been associated with cognitive function in observational studies. However, it remains elusive whether napping could be beneficial or detrimental for cognition and whether these associations are causal. Methods: Using Mendelian randomisation (MR), we studied the relationship between daytime napping and cognitive outcomes. Data were from UK Biobank (n= 378,932; mean age= 57 years). Our exposure (daytime napping) was instrumented using 92 genome-wide, independent genetic variants and our cognitive outcomes were reaction time and visual memory. Inverse-variance weighted MR was implemented, with sensitivity analyses including MR-Egger and the Weighted Median Estimator for horizontal pleiotropy. We also tested different daytime napping instruments (47 SNPs, 86 SNPs and 17 SNPs) to ensure the robustness of our results. Results: No associations were found between daytime napping and reaction time (expβ=1.01, 95%CI=1.00; 1.03), or visual memory (expβ=0.99, 95%CI=0.94; 1.05). MR-Egger and Weighted Median Estimator approaches showed no evidence of horizontal pleiotropy. Additional analyses with 47 SNPs (adjusted for excessive daytime sleepiness), 86 SNPs (excluding sleep apnoea) and 17 SNPs (no sample overlap with UKB) also showed no associations with reaction time or visual memory. Conclusions: Overall, we observed no evidence of a causal association between habitual daytime napping and reaction time and visual memory. Future studies should focus on the associations between napping and other cognitive outcomes.

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Napping in Older Adults: a Review of Current Literature

Cited by 41 publications

References 55 publications

The role of socio-demographic factors and physical functioning in the intra- and interpersonal variability of older adults’ sedentary time: an observational two- country study

The role of socio-demographic factors and physical functioning in the intra- and interpersonal variability of older adults’ sedentary time: an observational two- country study

Obesity indicators as mediators of association between daytime napping and type 2 diabetes mellitus: the Guangzhou Biobank Cohort Study

Is there an association between daytime napping, cognitive function and brain volume? A Mendelian randomisation study in the UK Biobank

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