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 0828 Descriptive Model of Sleep Quality in the Older Adults

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A315-A316
Author(s):  
P K Morelhao ◽  
G L Fernandes ◽  
V Dokkedal-Silva ◽  
G N Pires ◽  
S Tufik ◽  
...  
Keyword(s):  
Older Adults ◽  
Sleep Quality ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Sleep Efficiency ◽  
Poor Sleep ◽  
Descriptive Model ◽  
Subjective Sleep ◽  
Sleep Parameters ◽  
The City

Abstract Introduction Poor sleep quality is a health condition that impacts the quality of life of the older population. In the literature, there are questions about which objective sleep parameters should be considered to describe precisely the definition of sleep quality. There is ongoing debate with this term usually being used in relation to subjective sleep perception. This study aimed to investigate which objective and subjective sleep parameters contribute to a measurement of sleep quality in older adults. Methods A cross-sectional study using a representative sample of adults from the city of São Paulo, Brazil was performed. We used a dataset from the 2015 Epidemiological Study of Sleep from the City of São Paulo (EPISONO), including only individuals aged 60 years or more. We used exploratory factor analysis and structural equation modelling to identify relevant variables to a descriptive model of sleep quality. Results A total of 152 older adults were included. The final model consists of two factors, objective sleep quality which comprises sleep efficiency, total sleep time and sleep latency, and poor sleep perception, constituted by scores in the Pittsburgh Sleep Quality Index and Insomnia Severity Index. Conclusion The results suggested that sleep quality had both an objective (sleep efficiency, total sleep time, latency of sleep onset) and subjective dimensions (subjective questionnaires). These results may be useful in the clinical scenario, serving as leads for a better understanding of the sleep quality in aging patients. Future studies may also benefit from this descriptive model to further researches other associations, such as sleep and pain in this population. Support The study was supported by Associação Fundo de Incentivo à Pesquisa (AFIP) and Coordenação de Aperfeiçoamento de Nível Superior (CAPES). ST and MLA received support from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).

scholarly journals Gender differences in BaYaka forager sleep-wake patterns in forest and village contexts

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Erica Kilius ◽  
David R. Samson ◽  
Sheina Lew-Levy ◽  
Mallika S. Sarma ◽  
Ujas A. Patel ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Small Scale ◽  
Cultural Variation ◽  
Sleep Patterns ◽  
Economic Activities ◽  
Mixed Effect ◽  
Wake Patterns ◽  
The Republic

AbstractSleep studies in small-scale subsistence societies have broadened our understanding of cross-cultural sleep patterns, revealing the flexibility of human sleep. We examined sleep biology among BaYaka foragers from the Republic of Congo who move between environmentally similar but socio-ecologically distinct locations to access seasonal resources. We analyzed the sleep–wake patterns of 51 individuals as they resided in a village location (n = 39) and a forest camp (n = 23) (362 nights total). Overall, BaYaka exhibited high sleep fragmentation (50.5) and short total sleep time (5.94 h), suggestive of segmented sleep patterns. Sleep duration did not differ between locations, although poorer sleep quality was exhibited in the village. Linear mixed effect models demonstrated that women’s sleep differed significantly from men’s in the forest, with longer total sleep time (β ± SE =  − 0.22 ± 0.09, confidence interval (CI) = [− 0.4, − 0.03]), and higher sleep quality (efficiency; β ± SE =  − 0.24 ± 0.09, CI = [− 0.42, − 0.05]). These findings may be due to gender-specific social and economic activities. Circadian rhythms were consistent between locations, with women exhibiting stronger circadian stability. We highlight the importance of considering intra-cultural variation in sleep–wake patterns when taking sleep research into the field.

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 Does media use before bedtime affect the sleep of psychosomatic rehabilitation patients?

2020 ◽  
Vol 24 (4) ◽  
pp. 253-258
Author(s):  
Jasmin Faber ◽  
Indra Steinbrecher-Hocke ◽  
Peter Bommersbach ◽  
Angelika A. Schlarb
Keyword(s):  
Sleep Quality ◽  
Media Use ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Sleep Efficiency ◽  
Subjective Sleep Quality ◽  
Psychosomatic Rehabilitation ◽  
Sleep Parameters ◽  
Rehabilitation Clinic ◽  
The Relationship

Abstract Objective Media use can affect sleep. However, research regarding various populations is sparse. The objective of this study was to examine the relationship between media use directly before bedtime and various sleep parameters in patients of a psychosomatic rehabilitation clinic. Methods Patients from a German psychosomatic rehabilitation clinic were tested regarding subjective sleep quality and insomnia symptoms based on questionnaires such as the Pittsburgh Sleep Quality Index (PSQI). Eligible patients also completed an additional sleep log over a period of 1 week. A total of 347 insomnia patients were enrolled, with a mean age of 49.77 years (range 22–64 years; median = 52 years). 57.5% of the patients were 50 years or older. Results Analysis showed that media use and various sleep diary parameters such as total sleep time (r = −0.386, p = 0.042; rTST2 = 0.149) and sleep efficiency (r = −0.507, p = 0.006; rSE2 = 0.257) were significantly associated. In detail, more media consumption was associated with less total sleep time and a lower sleep efficiency. The same result was found for media use and sleep efficiency on weekdays (r = −0.544, p = 0.002; rSE2 = 0.296), but not for other sleep parameters. However, media use time and subjective sleep quality were not significantly correlated, r = −0.055, p = 0.768. Conclusion This study, which is the first to examine the relation between media use and sleep in patients of a psychosomatic rehabilitation clinic, suggests a significant association between media use and sleep duration as well as sleep efficiency. However, more research is needed to investigate the relationship between media use and sleep in more detail, to increase patients’ quality of life and to incorporate these findings into the daily life of clinicians and therapists as well as into sleep hygiene education and sleep trainings.

Sleep Quality in Nurses

2012 ◽  
Vol 15 (3) ◽  
pp. 273-279 ◽  
Author(s):  
Shu-Fen Niu ◽  
Hsin Chu ◽  
Min-Huey Chung ◽  
Chun-Chieh Lin ◽  
Yu-Shiun Chang ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Medical Center ◽  
Night Shift ◽  
Sleep Time ◽  
Shift Workers ◽  
Sleep Diaries ◽  
Shift Group ◽  
Sleep Parameters ◽  
The Difference ◽  
Night Shifts

The study investigated the number of days off nurses working night shifts need to recover their sleep quality to the level of daytime workers during their days off. This study included 30 day-shift nurses and 32 night-shift nurses. It was conducted as a randomized clinical trial in the medical and surgical wards of a medical center in northern Taiwan in May and June 2010 using sleep diaries and sleep parameters collected by actigraphy on different workdays and days off. On workdays, the night-shift group had significantly less total sleep time (TST) on Day 5 and significantly lower sleep efficiency (SE) on Day 3 than the day-shift group. TSTs of the two groups on days off were higher than those on workdays. On the 4th consecutive day off, higher TST, a decrease in WASO, and an increase in SE suggests that the night-shift group had recovered their sleep quality to the level of the day-shift group on their days off. The SE of the night-shift group exceeded that of the day-shift group after the 4th consecutive day off, though the difference was not statistically significant in the present study. Based on these data, it is recommended that night-shift workers arrange a period of at least 4 days off after 5 consecutive night shifts and at least 5 days off if the staff who have previously worked night shifts are being assigned a set of different shifts.

scholarly journals 673 Did the COVID-19 pandemic increase insomnia?

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A263-A263
Author(s):  
Neil Stanley ◽  
Alison Gardiner ◽  
Nicola Sunter
Keyword(s):  
Sleep Quality ◽  
Daytime Sleepiness ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Economic Consequences ◽  
Age Related ◽  
Significant Difference ◽  
The Difference ◽  
The Uk ◽  
The Impact

Abstract Introduction COVID-19 has been an unprecedented health event with far-reaching health and economic consequences. There have been numerous surveys published that have suggested that insomnia has increased during the pandemic. However, there have been no comparisons of data from the pandemic with that from other years. Here we present baseline data from people signing up to an online CBTi course to investigate the impact of COVID-19 on sleep. Methods We investigated the difference in age; diary-reported Sleep Efficiency (SE%) and Total Sleep Time (TST); sleep quality and disturbances as measured by the Pittsburgh Sleep Quality Index (PSQI) and daytime sleepiness using the Epworth Sleepiness Scale (ESS); between the first wave of COVID-19 in the UK (1st March -31st July 2020) as compared to the same period in 2019. Results In 2019 n=2231 patients were assessed as compared to n=6173 in 2020. There were no significant differences in the age of the two cohorts (47.1 years v 46.3 years, NS). SE% was significantly lower in the 2019 cohort (66% v 67.6, p <0.001) as was their total sleep time (5.71 hrs v 6.05 hrs, p<0.0001). PSQI scores were also higher in 2019 (13.13 v 12.72. p<0.0001). The level of daytime sleepiness was lower in the 2019 cohort (5.4 v 5.6 p <0.001) Conclusion Our results show that there was no evidence of an increase in the severity of sleep disturbance during the 1st wave of the COVID-19 pandemic in the UK in contrast to what numerous surveys have suggested. Indeed, we found that people signing up to Sleepstation’s online dCBTi course during the 1st wave of the pandemic had statistically significant better subjective sleep, although they had a higher level of daytime sleepiness than those in the same period a year previously. Although statistically significant, our results do not demonstrate a clinically relevant difference between the two cohorts. It is also interesting that despite the age-related impact of COVID-19, there was no significant difference in the age of the patients. Thus, in contrast to the survey data, we found no evidence for a worsening of sleep during the 1st wave of the pandemic. Support (if any):

scholarly journals The Effects of Caffeine on Sleep Patterns Among Adolescents

2009 ◽  
Vol 5 ◽  
Author(s):  
Lauren E Margolis
Keyword(s):  
Sleep Quality ◽  
Total Sleep Time ◽  
Adult Population ◽  
Sleep Onset ◽  
Onset Time ◽  
Sleep Time ◽  
Caffeine Intake ◽  
Sleep Patterns ◽  
Sleep Habits ◽  
Caffeine Consumption

This review of literature examines whether there is a causal relationship between caffeine consumption and sleep patterns among adolescents. Literature suggests that there is a cause and effect relationship between caffeine intake and cognitive performance in adults. Researchers also found that among the adult population, consuming caffeine before sleep resulted in increased sleep onset time, reduced total sleep time, and poorer sleep quality. Specifically, adolescents ingest the majority of their total caffeine intake through caffeinated sodas. Studies have shown that adolescents consume more caffeine later in the week, which correlates with shorter total sleep time and decreased sleep quality. Thus, in review of the literature, it was determined that caffeine negatively affects sleep habits among adults, but further research should be conducted in order to conclude whether this relationship holds true among adolescents.

scholarly journals Evaluating Sleep Characteristics in Intensive Care Unit and Non-Intensive Care Unit Physicians

2011 ◽  
Vol 39 (6) ◽  
pp. 1071-1075 ◽  
Author(s):  
G. Ok ◽  
H. Yilmaz ◽  
D. Tok ◽  
K. Erbüyün ◽  
S. Çoban ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Shift Work ◽  
Pittsburgh Sleep Quality Index ◽  
Sleep Latency ◽  
Total Sleep Time ◽  
Total Activity ◽  
Sleep Time ◽  
Sleep Parameters ◽  
Icu Physicians

Healthcare workers’ cognitive performances and alertness are highly vulnerable to sleep loss and circadian rhythms. The purpose of this study was to investigate the changes in sleep characteristics of intensive care unit (ICU) and non-ICU physicians. Actigraphic sleep parameters, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale and Hamilton Depression Rating Scale were evaluated for ICU and non-ICU physicians on the day before shift-work and on three consecutive days after shift-work. Total sleep time, sleep latency, wakefulness after sleep onset, total activity score, movement fragmentation index, sleep efficiency, daytime naps and total nap duration were also calculated by actigraph. In the ICU physicians, the mean Pittsburgh Sleep Quality Index score was significantly higher than the non-ICU physicians (P=0.001), however mean Epworth Sleepiness Scale scores were not found significantly different between the two groups. None of the scores for objective sleep parameters were statistically different between the groups when evaluated before and after shift-work (P >0.05). However in both ICU and non-ICU physicians, sleep latency was observed to be decreased within the three consecutive-day period after shift-work with respect to basal values (P <0.001). Total sleep time, total activity score and sleep efficiency scores prior to shift-work were significantly different from shift-work and the three consecutive-days after shift-work, in both groups. Working in the ICU does not have an impact on objective sleep characteristics of physicians in this study. Large cohort studies are required to determine long-term health concerns of shift-working physicians.

scholarly journals Tasimelteon safely and effectively improves sleep in Smith–Magenis syndrome: a double-blind randomized trial followed by an open-label extension

2021 ◽  
Author(s):  
Christos M. Polymeropoulos ◽  
Justin Brooks ◽  
Emily L. Czeisler ◽  
Michaela A. Fisher ◽  
Mary M. Gibson ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Crossover Study ◽  
Total Sleep Time ◽  
Sleep Time ◽  
Open Label ◽  
Double Blind ◽  
Open Label Study ◽  
Label Study ◽  
Sleep Complaints ◽  
Open Label Extension

Abstract Purpose To assess the efficacy of tasimelteon to improve sleep in Smith–Magenis syndrome (SMS). Methods A 9-week, double-blind, randomized, two-period crossover study was conducted at four US clinical centers. Genetically confirmed patients with SMS, aged 3 to 39, with sleep complaints participated in the study. Patients were assigned to treatment with tasimelteon or placebo in a 4-week crossover study with a 1-week washout between treatments. Eligible patients participated in an open-label study and were followed for >3 months. Results Improvement of sleep quality (DDSQ50) and total sleep time (DDTST50) on the worst 50% of nights were primary endpoints. Secondary measures included actigraphy and behavioral parameters. Over three years, 52 patients were screened, and 25 patients completed the randomized portion of the study. DDSQ50 significantly improved over placebo (0.4, p = 0.0139), and DDTST50 also improved (18.5 minutes, p = 0.0556). Average sleep quality (0.3, p = 0.0155) and actigraphy-based total sleep time (21.1 minutes, p = 0.0134) improved significantly, consistent with the primary outcomes. Patients treated for ≥90 days in the open-label study showed persistent efficacy. Adverse events were similar between placebo and tasimelteon. Conclusion Tasimelteon safely and effectively improved sleep in SMS.

scholarly journals Physical Activity and Inhibitory Control: The Mediating Role of Sleep Quality and Sleep Efficiency

2021 ◽  
Vol 11 (5) ◽  
pp. 664
Author(s):  
Lin Li ◽  
Qian Yu ◽  
Wenrui Zhao ◽  
Fabian Herold ◽  
Boris Cheval ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sleep Quality ◽  
Inhibitory Control ◽  
Sleep Efficiency ◽  
Equation Modeling ◽  
Control Performance ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Sleep Parameters ◽  
The Relationship

Objectives: the current study aimed to investigate the relationship between physical activity (PA) level and inhibitory control performance and then to determine whether this association was mediated by multiple sleep parameters (i.e., subjective sleep quality, sleep duration, sleep efficiency, and sleep disturbance). Methods: 180 healthy university students (age: 20.15 ± 1.92 years) from the East China Normal University were recruited for the present study. PA level, sleep parameters, and inhibitory control performance were assessed using the International Physical Activity Questionnaire (IPAQ), the Pittsburgh Sleep Quality Index Scale (PSQI), and a Stroop test, respectively. The data were analyzed using structural equation modeling. Results: A higher level of PA was linked to better cognitive performance. Furthermore, higher subjective sleep quality and sleep efficiency were associated with better inhibitory control performance. The mediation analysis revealed that subjective sleep quality and sleep efficiency mediated the relationship between PA level and inhibitory control performance. Conclusion: our results are in accordance with the literature and buttress the idea that a healthy lifestyle that involves a relatively high level of regular PA and adequate sleep patterns is beneficial for cognition (e.g., inhibitory control performance). Furthermore, our study adds to the literature that sleep quality and sleep efficiency mediates the relationship between PA and inhibitory control performance, expanding our knowledge in the field of exercise cognition.

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