Diurnal fluctuations in subjective sleep time in humans

2010 ◽  
Vol 68 (3) ◽  
pp. 225-231 ◽  
Author(s):  
Sayaka Aritake-Okada ◽  
Shigekazu Higuchi ◽  
Hiroyuki Suzuki ◽  
Kenichi Kuriyama ◽  
Minori Enomoto ◽  
...  
Keyword(s):  
Sleep Time ◽  
Subjective Sleep ◽  
Diurnal Fluctuations

scholarly journals 0845 The Difference in Sleep Characteristics of Chronic Insomnia Disorder According to Gender and Age

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A322-A322
Author(s):  
J Hong ◽  
H Lee ◽  
I Yoon
Keyword(s):  
Sleep Quality ◽  
The Elderly ◽  
Sleep Time ◽  
Chronic Insomnia ◽  
Middle Aged ◽  
Subjective Sleep ◽  
Time In Bed ◽  
Insomnia Disorder ◽  
Gender And Age ◽  
Sleep Parameters

Abstract Introduction Impacts of age and gender on sleep have been reported in normal population, but rarely in chronic insomnia disorder (CID). This study aimed to investigate difference in sleep characteristics of CID according to gender and age. Methods The participants with drug-naïve CID and aged between 40 and 79 years were recruited. We compared subjective and objective sleep parameters between the middle-aged (40-64 years, N=86) and the elderly (65-79 years, N=50), and between men (N=45) and women (N=91). The subjective sleep quality and habitual sleep time were measured by Pittsburgh Sleep Quality Index (PSQI). The participants were asked to wear an actigraph for 4 days to obtain objective sleep parameters. Results In the PSQI, the elderly reported earlier bedtime and wake-up time (p=0.018; p=0.026), reduced total sleep time (TST) and sleep efficiency (p=0.003; p=0.011), and low sleep quality (p=0.034) compared to the middle-aged. However, according to the actigraphy, differences were observed only in the bedtime (p=0.016) and the wake-up time (p=0.002) between the two age groups. Between genders, the actigraphy showed that the male patients woke up earlier than the female group (p=0.015); except for this finding, there was no significant gender effect. Meanwhile, regarding gender and age interactions, the elderly women with CID showed longer time in bed (TIB) with increase in both TST and wake after sleep onset (WASO) compared to the middle-aged women. The elderly men showed decreased TIB and TST, and slightly decreased WASO than the middle-aged men. Conclusion The elderly with CID show more subjective sleep complaints than the middle-aged CID despite little difference in objective sleep characteristics, which suggests that the elderly CID may seek medical help more than the middle aged. As women with CID get older, they increase time spent in bed to maintain sleep time, but with resultant increase in wake. Support None

scholarly journals Effect of kidney transplantation on sleep quality in patients admitted in ICU:a cross-section study in China

2019 ◽  
Author(s):  
Lu Long ◽  
Jia Liu ◽  
Jin Yan ◽  
Jian fei Xie ◽  
Huan Liu ◽  
...  
Keyword(s):  
Kidney Transplantation ◽  
Sleep Quality ◽  
Linear Regression Analysis ◽  
Sleep Onset ◽  
Sleep Time ◽  
Middle Level ◽  
Sleep Disruption ◽  
Poor Sleep ◽  
Subjective Sleep Quality ◽  
Subjective Sleep

Abstract Background Although evidences showed that sleep disorder is common in patient with end stage renal disease (ESRD), less is known about their sleep quality after early post-kidney transplantation (kTx) especially in Intensive Care Unite (ICU). Thus, the purpose of this study is to investigate sleep quality of kTx recipients in ICU and explore factors related poor sleep, second, to measure the correlation of subjective sleep quality and sleep architecture assessed by PSG in kTx recipients. Methods This study recruited participants from ESRD patients registered in transplantation waiting list at the third xiangya hospital of central south university in China. Participants required to complete the Pittsburgh sleep quality index(PSQI) and demographic questionnaire as baseline data and received one night of Polysomnography (PSG) in the ICU within 96 hours of surgery, during which time sound and light data were monitored. After that Richards Campbell sleep questionnaires (RCSQ) also need completed. Results 26 participants self-reported sleep quality and sleep efficiency based on RCSQ was at middle level (49.2 ± 25.6mm), and 14/26(53.8%) kTx recipients in ICU were poor sleepers defined by RCSQ <50. PSG showed that most kTx recipients in ICU had shallow sleep with mainly stage 2 sleep time (80.90 ±70.10 min), lower total sleep time (136.50 ±86.41 min), higher awakening frequency after sleep onset (8.87 ±5.92 times) and long awaken time (94.67 ±75.09 min) when a sleep disruption occured. multiple linear regression analysis showed that self-reported noise and pain were the significant factor affecting sleep(P < 0.05).Conclusion Subjective sleep quality based on RCSQ scored better than objective one measured by PSG in kTx recipients, sleep disruption always remained a substantial problem and affected by self-reported noise and pain.

Do nocturnal headaches matter? A prospective diary study on subjective sleep parameters in snorers and their bed partners

Cephalalgia ◽  
2013 ◽  
Vol 34 (7) ◽  
pp. 533-539
Author(s):  
Stefan Seidel ◽  
Sophie Frantal ◽  
Sabine Salhofer-Polanyi ◽  
Doris Lieba-Samal ◽  
Josef Zeitlhofer ◽  
...  
Keyword(s):  
Negative Impact ◽  
Sleep Time ◽  
Subjective Quality ◽  
Sleep Diary ◽  
Semistructured Interview ◽  
Quality Of Sleep ◽  
Subjective Sleep ◽  
Female Predominance ◽  
Sleep Parameters

Background The objective of this study was to assess the influence of nocturnal headaches (NH) on subjective sleep parameters prospectively in habitual snorers and their bed partners. Methods We recruited habitual snorers and their bed partners via newspaper articles. The participants completed a semistructured interview, filled in questionnaires about quality of sleep (PSQI), daytime sleepiness (ESS), depression (SDS) and anxiety (SAS) and they kept a 90-day headache and sleep diary. Results Seventy-six snorers (25 female) and 41 bed partners (31 female) completed the study recording a total of 6690 and 3497 diary days, respectively. NH were recorded on 222 (3.3%) and 79 (2.2%) days in 32 (42%) snorers and 17 (41%) bed partners, respectively. Snorers with NH showed significantly higher PSQI (5 ± 3 vs. 4 ± 2, p = 0.004), SAS (38 ± 11 vs. 31 ± 10, p = 0.011) and SDS scores (39 ± 12 vs. 34 ± 10, p = 0.048) than snorers without NH. For bed partners with NH we found a significant female predominance (sex ratio f:m = 16:1 vs. 12:12, p = 0.005) and significantly higher SAS scores (38 ± 6 vs. 33 ± 8, p = 0.030) compared with bed partners without NH. The subjective quality of sleep in habitual snorers ( p < 0.001) as well as their bed partners ( p = 0.017) was negatively influenced by NH, but not total sleep time. Discussion NH occurred in around 40% of snorers and their bed partners at least once during the 90-day observation period. Our results confirmed a negative impact on the subjective quality of sleep in both groups.

scholarly journals Finding a Composite Measure for Data From Wrist Actigraphy in Bipolar Disorder

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 338-339
Author(s):  
Ellen Lee ◽  
David Wing ◽  
Sonia Ancoli-Israel ◽  
Colin Depp ◽  
Ho-Kyoung Yoon ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Total Sleep Time ◽  
Sleep Onset ◽  
Sleep Time ◽  
Composite Measure ◽  
Subjective Sleep ◽  
Wrist Actigraphy ◽  
Z Scores ◽  
Participant Characteristics ◽  
Composite Scores

Abstract Actigraphy can objectively measure sleep in studies on Bipolar Disorder (BD) where subjective sleep ratings might be influenced by affect. Actigraphy data are complex necessitating data reduction approaches. We created a composite score of actigraphy sleep metrics (total sleep time [TST], wake after sleep onset [WASO], and percent sleep [PS]) in BD. We computed z-scores of sleep measures for n=51 BD vs. n=80 healthy subjects and averaged scores. We examined associations with participant characteristics and used LASSO to identify metrics best explaining composite variability. Higher composite scores (better sleep) were seen in employed vs. unemployed (t=2.40, df=34, p=0.02), and correlated with higher medication load (r=0.41, p=0.004), lower mania symptomatology (r=-0.33, p=0.04) and lower interleukin (IL)-6 levels (r=-0.32, p=0.02). TST best explained variability in medication load and PS best explained employment, mania symptoms and IL-6. Given observed specificity of associations, selecting theory-driven sleep metrics may be more appropriate than a composite.

Research Between Sleep Quality and Interpersonal Sensitivity of Chinese College Students

2020 ◽  
Author(s):  
Haiying Tang ◽  
Bao Guo ◽  
Yanzhi Lang
Keyword(s):  
College Students ◽  
Sleep Quality ◽  
Sleep Disorder ◽  
Sleep Latency ◽  
Sleep Time ◽  
Interpersonal Sensitivity ◽  
Subjective Sleep Quality ◽  
Chinese College Students ◽  
Subjective Sleep ◽  
Quality Sleep

Abstract Background To investigate and to explore the relationship between sleep quality and interpersonal sensitivity of Chinese college students.Method During the period from April 2019 to May 2019, the university students from five universities in Shanxi Province of China were selected by occasional sampling method. The research has received permission from Research Ethics Committee of ShanXi Medical University(2016010). A cross-sectional survey was conducted with the Chinese version of Pittsburgh Sleep Quality Index (PSQI), Symptom Checklist 90 (SCL-90) and the self-designed questionnaire. SPSS 25.0 was used for statistical analysis. Results A total of 901 college students were investigated. The average score of interpersonal sensitivity was 17.72±6.46, and 9.0% of college students were in the state of interpersonal sensitivity. Grade and specialty are the influencing factors of interpersonal sensitivity (p<0.05). The total PSQI score was 4.43±2.56. 28.0% of college students had poor sleep quality. Major was the influencing factor of sleep quality (p<0.001). In the multiple linear regression models, we found that daytime dysfunction, sleep disorder, subjective sleep quality, sleep latency and sleep time were the main factors affecting interpersonal sensitivity.Conclusions The higher the PSQI score, the higher the interpersonal sensitivity score. Among the dimensions of sleep quality, daytime dysfunction, sleep disorder, subjective sleep quality, sleep latency and sleep time can affect interpersonal sensitivity.

scholarly journals Yoga nidra practice shows improvement in sleep in patients with chronic insomnia: A randomized controlled trial

2021 ◽  
Vol 34 ◽  
pp. 143-150
Author(s):  
KARUNA DATTA ◽  
MANJARI TRIPATHI ◽  
MANSI VERMA ◽  
DEEPIKA MASIWAL ◽  
HRUDA NANDA MALLICK
Keyword(s):  
Sleep Quality ◽  
Salivary Cortisol ◽  
Controlled Trial ◽  
Sleep Onset ◽  
Sleep Time ◽  
Chronic Insomnia ◽  
Sleep Diary ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Yoga Nidra

Background Yoga nidra is practised by sages for sleep. The practice is simple to use and has been clearly laid out, but its role in the treatment of chronic insomnia has not been well studied. Methods In this randomized parallel-design study conducted during 2012–16, we enrolled 41 patients with chronic insomnia to receive conventional intervention of cognitive behavioural therapy for insomnia (n=20) or yoga nidra (n=21). Outcome measures were both subjective using a sleep diary and objective using polysomnography (PSG). Salivary cortisol levels were also measured. PSG was done before the intervention in all patients and repeated only in those who volunteered for the same. Results Both interventions showed an improvement in subjective total sleep time (TST), sleep efficiency, wake after sleep onset, reduction in total wake duration and enhancement in subjective sleep quality. Objectively, both the interventions improved TST and total wake duration and increased N1% of TST. Yoga nidra showed marked improvement in N2% and N3% in TST. Salivary cortisol reduced statistically significantly after yoga nidra (p=0.041). Conclusion Improvement of N3 sleep, total wake duration and subjective sleep quality occurred following yoga nidra practice. Yoga nidra practice can be used for treatment of chronic insomnia after supervised practice sessions.

scholarly journals The Travel Demands of an Elite Rugby Sevens Team: Effects on Objective and Subjective Sleep Parameters

2021 ◽  
Vol 16 (5) ◽  
pp. 688-694
Author(s):  
Cédric Leduc ◽  
Julien Robineau ◽  
Jason C. Tee ◽  
Jeremy Cheradame ◽  
Ben Jones ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Mixed Models ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Jet Lag ◽  
Sleep Patterns ◽  
Subjective Sleep ◽  
World Series ◽  
Sleep Parameters ◽  
The Difference

Purpose: To explore the effects of travel related to international rugby sevens competition on sleep patterns. Methods: A total of 17 international male rugby sevens players participated in this study. Actigraphic and subjective sleep assessments were performed daily during 2 separate Sevens World Series competition legs (Oceania and America). The duration of each competition leg was subdivided into key periods (pretour, precompetition, tournament 1, relocation, tournament 2, and posttour) lasting 2 to 7 nights. Linear mixed models in combination with magnitude-based decisions were used to assess (1) the difference between preseason and key periods and (2) the effect of travel direction (eastward or westward). Results: Shorter total sleep time (hours:minutes) was observed during tournament 2 (mean [SD], 06:16 [01:08]), relocation (06:09 [01:09]), and the pretour week (06:34 [01:24]) compared with the preseason (06:52 [01:00]). Worse sleep quality (arbitrary units) was observed during tournament 1 (6.1 [2.0]) and 2 (5.7 [1.2]), as well as during the relocation week (6.3 [1.5]) than during the preseason (6.5 [1.8]). When traveling eastward compared with westward, earlier fall-asleep time was observed during tournament 1 (ES − 0.57; 90% CI, −1.12 to −0.01), the relocation week (−0.70 [−1.11 to −0.28]), and the posttour (−0.57 [−0.95 to −0.18]). However, possibly trivial and unclear differences were observed during the precompetition week (0.15 [−0.15 to 0.45]) and tournament 2 (0.81 [−0.29 to 1.91]). Conclusion: The sleep patterns of elite rugby sevens players are robust to the effects of long-haul travel and jet lag. However, the staff should consider promoting sleep during the tournament and relocation week.

scholarly journals Sleep disordered breathing, insomnia, and excessive daytime sleepiness among Japanese pregnant women without gestational complications do not negatively impact delivery outcomes

2019 ◽  
Author(s):  
Hideaki Kondo ◽  
Shiho Umeno ◽  
Hiromi Eto ◽  
Chiho Kato ◽  
Yuki Nagaura
Keyword(s):  
Sleep Quality ◽  
Pregnant Women ◽  
Sleep Time ◽  
Third Trimester ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
The Third ◽  
Delivery Outcomes ◽  
Japanese Pregnant Women ◽  
Insomnia Severity

Abstract Frequently observed sleep/wake problems among pregnant women need comprehensive evaluation. This study was conducted to clarify the sleep/wake problems among pregnant women without gestational complications at the second and third trimester and the effects of sleep/wake problems on delivery outcomes. Methods: A total of 88 Japanese pregnant women participated in this study. At the second and third trimester, subjective sleep quality, insomnia severity, excessive daytime sleepiness (EDS), and restless legs syndrome/Willis-Ekbom disease (RLS/WED) were assessed using questionnaires; also, sleep disordered breathing (SDB) was screened using a pulse oximeter. Results: From the second to third trimester, an increasing tendency of sleep/wake problems was observed. At the third trimester, the percentage of women experiencing decreased subjective sleep quality, difficulty maintaining sleep (DMS), EDS, RLS/WED, and 3% oxygen desaturation index (ODI) values ≥ 5/h were 62.5%, 45.5%, 48.9%, 9.1%, and 29.5%, respectively. In a logistic regression analysis for EDS at the third trimester, the adjusted odds ratio (95% confidence interval) of total sleep time < 6 hours, moderate to severe DMS, and 3% ODI ≥ 5/h were 3.25 (1.16–9.10), 4.74 (1.60–14.00), and 0.90 (0.28–2.89), respectively. Decreased subjective sleep quality, insomnia severity, EDS, and SDB did not affect the delivery outcome or infant’s condition. Conclusions: Sleep/wake problems were frequent during pregnancy, especially at the third trimester. EDS among pregnant women was associated with shorter sleep time and DMS, rather than SDB. However, there were no significant effects of sleep/wake problems on the delivery outcomes or infant’s conditions.

scholarly journals 0552 Investigating Pre-Sleep Processes and How They Influence Sleep: A Diary and Actigraphy Study

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A211-A211
Author(s):  
T Maeder ◽  
J Whitford ◽  
P Feinaigle ◽  
W Karlen ◽  
E Seifritz ◽  
...  
Keyword(s):  
At Risk ◽  
Medical Students ◽  
Sleep Disturbances ◽  
Linear Models ◽  
Sleep Onset ◽  
Sleep Time ◽  
Negative Influence ◽  
Sleep Onset Latency ◽  
Subjective Sleep Quality ◽  
Subjective Sleep

Abstract Introduction The current study examined the relationship between pre-sleep processes and sleep in the context of real-world stress exposure in medical students during an internship. Medical students are often exposed to a variety of stressors and potentially traumatic events and have been shown to be at risk to develop psychopathology. Previous research has shown an association between stress, psychological distress, and sleep disturbances. In this context, studies have investigated possible predictors for sleep disturbances. Recently, the period just prior to sleep onset has received increased interest. At the moment, little is known, however, about the influence of such pre-sleep processes. In this study, we investigated the influence of pre-sleep rumination and mindfulness on sleep disturbances. Methods In a prospective study, we examined a sample of 50 medical students from the University of Zurich. All participants completed their first medical internship over 9 months as part of medical school. Pre-sleep processes and sleep were indexed mid-internship using sleep diaries over seven consecutive days. Additionally, a Fitbit tracking device was used to objectively measure sleep. Correlational analyses and multilevel linear models were conducted. Results Results show associations between pre-sleep processes and sleep disturbances in this stress-exposed at-risk population. Multilevel mixed-effects models showed that over the period of 7 consecutive nights, pre-sleep rumination was a significant predictor of lower subjective sleep quality (B = -.085, SE = .036, p = .02), lower subjective total sleep time (B = -.124, SE = .043, p = .005), higher subjective sleep onset latency (B = 1.535, SE = .678, p = .025), and higher subjective wake-up frequency (B = .033, SE = .011, p = .003). Conclusion Together, our data suggest pre-sleep processes as potential targets for stress-prevention programs that could help reduce the negative influence of stress in at risk populations. Support NA

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