A shower before bedtime may improve the sleep onset latency of youth soccer players

AbstractThis study aimed to quantify and assess the relationship of young soccer players' off-training physical activity (PA) and training responses on sleep quality. Eleven adolescent soccer players (13 ± 0.5 years old) were monitored during weekdays for four consecutive weeks, throughout soccer practice days. Off-training PA and sleep quality were assessed using 100 Hz tri-axial accelerometers and training responses analyzed using 20 Hz global positioning measurement units. A cluster analysis classified all cases into three different dimensions, (1) off-training PA, (2) training responses and (3) sleep quality. For each dimension, the most important variables for classifying the cases into clusters were sedentary PA and moderate-to-vigorous PA; total distance covered and impacts; and sleep onset latency and sleep fragmentation index, respectively. Afterwards, a correspondence analysis was used to identify whether off-training PA and training responses affected sleep quality. Results exposed that high to medium off-training PA combined with medium to high training responses may have decreased sleep quality. Conversely, no correspondence was observed between off-training PA and training responses, with higher sleep quality. This study emphasizes the importance of sports organizations adopting a holistic approach to youth soccer players’ development, that appropriately considers the inter-relationship between lifestyle, performance and health-related information.

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Melatonin in pediatric neurology

ORL ro ◽

10.26416/orl.33.4.2016.168 ◽

2016 ◽

Vol 4 (1) ◽

pp. 56-59

Author(s):

Raluca Ioana Teleanu ◽

Magdalena Sandu ◽

Eugenia Roza

Keyword(s):

European Union ◽

Food Safety ◽

Sleep Onset ◽

Sleep Onset Latency ◽

The European Union ◽

Onset Latency ◽

Entire Life ◽

Light Darkness ◽

Efficacy Studies ◽

Endogenous Melatonin

Melatonin is a hormone produced by the pineal gland during the night, as a response to the light-darkness variation. The endogenous melatonin levels have a cyclic evolution throughout the entire life. Various roles have been cited such as the in utero developement of the fetus through its action on the placenta, neurons and glial cells, a major role in the regulation of the cyrcadian rhythm, antioxidative, antiinflammatory roles, as well as celullar and umoral immunity modulation. In the European Union, exogenous melatonin has been evaluated by the European Food Safety Authority (EFSA) for reducing sleep onset latency and the conclusion was that it has efficacy studies in this regard.

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The Monday Effect Revisited: A Diary and Sleep Actigraphy Study

Sleep and Vigilance ◽

10.1007/s41782-020-00105-5 ◽

2020 ◽

Vol 4 (2) ◽

pp. 167-176

Author(s):

Achim Elfering ◽

Christin Gerhardt ◽

Diana Pereira ◽

Anna Schenker ◽

Maria U. Kottwitz

Keyword(s):

Sleep Duration ◽

Sleep Onset ◽

Monday Morning ◽

Sleep Onset Latency ◽

Onset Latency ◽

Social Stressors ◽

Monday Effect ◽

Work Related ◽

Cognitive Failure ◽

Delayed Sleep

Abstract Purpose Accidents are more likely to occur during the morning hours of Mondays (Monday effect). This might be due to a higher level of cognitive failure on Monday morning at work. Methods In a pilot actigraphy study across one working week, we explored this Monday effect and regressed daily self-reported workplace cognitive failure on weekdays (Monday versus other days), background social stressors at work, delayed sleep onset and sleep duration. Diary data were gathered from 40 full-time employees. Results Confirming our assumptions, results revealed work-related cognitive failure and sleep-onset latency on the previous night to be higher on Mondays compared to other workdays. Work-related cognitive failure correlated positively with delayed sleep-onset latency and background social stressors. In multilevel regression analysis, Monday significantly explained variations in workplace cognitive failure. The addition of background social stressors at work and sleep-onset latency to the regression model showed unique contributions to the prediction of workplace cognitive failure. No significant two-way or three-way interactions between working days, sleep-onset latency or sleep duration, and background social stressors were found. Conclusion Peak levels of cognitive failure on Monday morning and the association of cognitive failure with social stressors at work contribute to understanding the mechanisms involved in the increased prevalence of occupational accidents on Monday morning. Occupational safety interventions should address both social stressors at work and individual sleep hygiene.

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193 Sleep Variability and Affect Dynamics Among College Students during COVID-19 Pandemic

SLEEP ◽

10.1093/sleep/zsab072.192 ◽

2021 ◽

Vol 44 (Supplement_2) ◽

pp. A78-A78

Author(s):

Zahra Mousavi ◽

Jocelyn Lai ◽

Asal Yunusova ◽

Alexander Rivera ◽

Sirui Hu ◽

...

Keyword(s):

Emerging Adults ◽

Sleep Duration ◽

Sleep Onset ◽

Positive And Negative Affect ◽

Sleep Onset Latency ◽

Deep Sleep ◽

Onset Latency ◽

Sleep Patterns ◽

Light Sleep ◽

Affect Dynamics

Abstract Introduction Sleep disturbance is a transdiagnostic risk factor that is so prevalent among emerging adults it is considered to be a public health epidemic. For emerging adults, who are already at greater risk for psychopathology, the COVID-19 pandemic has disrupted daily routines, potentially changing sleep patterns and heightening risk factors for the emergence of affective dysregulation, and consequently mood-related disturbances. This study aimed to determine whether variability in sleep patterns across a 3-month period was associated with next-day positive and negative affect, and affective dynamics, proximal affective predictors of depressive symptoms among young adults during the pandemic. Methods College student participants (N=20, 65% female, Mage=19.80, SDage=1.0) wore non-invasive wearable devices (the Oura ring https://ouraring.com/) continuously for a period of 3-months, measuring sleep onset latency, sleep efficiency, total sleep, and time spent in different stages of sleep (light, deep and rapid eye movement). Participants reported daily PA and NA using the Positive and Negative Affect Schedule on a 0-100 scale to report on their affective state. Results Multilevel models specifying a within-subject process of the relation between sleep and affect revealed that participants with higher sleep onset latency (b= -2.98, p<.01) and sleep duration on the prior day (b= -.35, p=.01) had lower PA the next day. Participants with longer light sleep duration had lower PA (b= -.28, p=.02), whereas participants with longer deep sleep duration had higher PA (b= .36, p=.02) the next day. On days with higher total sleep, participants experienced lower NA compared to their own average (b= -.01, p=.04). Follow-up exploratory bivariate correlations revealed significant associations between light sleep duration instability and higher instability in both PA and NA, whereas higher deep sleep duration was linked with lower instability in both PA and NA (all ps< .05). In the full-length paper these analyses will be probed using linear regressions controlling for relevant covariates (main effects of sleep, sex/age/ethnicity). Conclusion Sleep, an important transdiagnostic health outcome, may contribute to next-day PA and NA. Sleep patterns predict affect dynamics, which may be proximal predictors of mood disturbances. Affect dynamics may be one potential pathway through which sleep has implications for health disparities. Support (if any):

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1253 Multiple sleep onset REM episodes in middle age woman with excessive daytime sleepiness – Is this automatically assumed narcolepsy?

SLEEP ◽

10.1093/sleep/zsaa056.1247 ◽

2020 ◽

Vol 43 (Supplement_1) ◽

pp. A477-A477

Author(s):

Kamal Patel ◽

Bianca J Lang

Keyword(s):

Daytime Sleepiness ◽

Sleep Latency ◽

Sleep Onset ◽

Sleep Time ◽

Multiple Sleep Latency Test ◽

Sleep Onset Latency ◽

Onset Latency ◽

Obstructive Sleep ◽

Falling Asleep ◽

Multiple Sleep Latency

Abstract Introduction Presence of sleep onset REM episodes often raises concerns of narcolepsy. However other conditions have shown to have presence of sleep on REM episodes which include but not limited to obstructive sleep apnea, sleep wake schedule disturbance, alcoholism, neurodegenerative disorders, depression and anxiety Report of Case Here we present a case of 30 year old female with history of asthma, patent foraman ovale, migraine headache, and anxiety who presented with daytime sleepiness, falling asleep while at work, occasional scheduled naps, non-restorative sleep, sleep paralysis, and hypnopompic hallucination. Pertinent physical exam included; mallampati score of 4/4, retrognathia, high arched hard palate, crowded posterior oropharynx. She had a score of 16 on Epworth sleepiness scale. Patient previously had multiple sleep latency test at outside facility which revealed 4/5 SOREM, with mean sleep onset latency of 11.5 minutes. She however was diagnosed with narcolepsy and tried on modafinil which she failed to tolerate. She was tried on sertraline as well which was discontinued due to lack of benefit. She had repeat multiple sleep latency test work up which revealed 2/5 SOREM, with mean sleep onset latency was 13.1 minutes. Her overnight polysomnogram prior to repeat MSLT showed SOREM with sleep onset latency of 10 minutes. Actigraphy showed consistent sleep pattern overall with sufficient sleep time but was taking hydroxyzine and herbal medication. Patient did not meet criteria for hypersomnolence disorder and sleep disordered breathing. Conclusion There is possibility her medication may have played pivotal role with her daytime symptoms. We also emphasize SOREMs can be present in other disorders such as anxiety in this case and not solely in narcolepsy

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Effects of High vs. Low Glycemic Index of Post-Exercise Meals on Sleep and Exercise Performance: A Randomized, Double-Blind, Counterbalanced Polysomnographic Study

Nutrients ◽

10.3390/nu10111795 ◽

2018 ◽

Vol 10 (11) ◽

pp. 1795 ◽

Cited By ~ 4

Author(s):

Angelos Vlahoyiannis ◽

George Aphamis ◽

Eleni Andreou ◽

George Samoutis ◽

Giorgos Sakkas ◽

...

Keyword(s):

Reaction Time ◽

Glycemic Index ◽

Exercise Performance ◽

Sleep Onset ◽

Interval Training ◽

Sleep Onset Latency ◽

Onset Latency ◽

Visual Reaction Time ◽

Post Exercise ◽

Visual Reaction

The aim of the current study was to investigate the effect of the glycemic index of post-exercise meals on sleep quality and quantity, and assess whether those changes could affect the next day’s exercise performance. Following a baseline/familiarization phase, 10 recreationally trained male volunteers (23.2 ± 1.8 years) underwent two double-blinded, randomized, counterbalanced crossover trials. In both trials, participants performed sprint interval training (SIT) in the evening. Post-exercise, participants consumed a meal with a high (HGI) or low (LGI) glycemic index. Sleep parameters were assessed by a full night polysomnography (PSG). The following morning, exercise performance was evaluated by the countermovement jump (CMJ) test, a visual reaction time (VRT) test and a 5-km cycling time trial (TT). Total sleep time (TST) and sleep efficiency were greater in the HGI trial compared to the LGI trial (p < 0.05), while sleep onset latency was shortened by four-fold (p < 0.05) and VRT decreased by 8.9% (p < 0.05) in the HGI trial compared to the LGI trial. The performance in both 5-km TT and CMJ did not differ between trials. A moderate to strong correlation was found between the difference in TST and the VRT between the two trials (p < 0.05). In conclusion, this is the first study to show that a high glycemic index meal, following a single spring interval training session, can improve both sleep duration and sleep efficiency, while reducing in parallel sleep onset latency. Those improvements in sleep did not affect jumping ability and aerobic endurance performance. In contrast, the visual reaction time performance increased proportionally to sleep improvements.

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P062 Sleep parameter validation of a home-based ballistocardiograph sleep tracker

SLEEP Advances ◽

10.1093/sleepadvances/zpab014.108 ◽

2021 ◽

Vol 2 (Supplement_1) ◽

pp. A41-A42

Author(s):

M Kholghi ◽

I Szollosi ◽

M Hollamby ◽

D Bradford ◽

Q Zhang

Keyword(s):

Total Sleep Time ◽

Sleep Onset ◽

Sleep Time ◽

Daily Routine ◽

Sleep Onset Latency ◽

Onset Latency ◽

Sleep Monitoring ◽

Significant Discrepancy ◽

Home Based ◽

Wake Detection

Abstract Introduction Consumer home sleep trackers are gaining popularity for objective sleep monitoring. Amongst them, non-wearable devices have little disruption in daily routine and need little maintenance. However, the validity of their sleep outcomes needs further investigation. In this study, the accuracy of the sleep outcomes of EMFIT Quantified Sleep (QS), an unobtrusive and non-wearable ballistocardiograph sleep tracker, was evaluated by comparing it with polysomnography (PSG). Methods 62 sleep lab patients underwent a single clinical PSG and their sleep measures were simultaneously collected through PSG and EMFIT QS. Total Sleep Time (TST), Wake After Sleep Onset (WASO), Sleep Onset Latency (SOL) and average Heart Rate (HR) were compared using paired t-tests and agreement analysed using Bland-Altman plots. Results EMFIT QS data loss occurred in 47% of participants. In the remaining 33 participants (15 females, with mean age of 53.7±16.5), EMFIT QS overestimated TST by 177.5±119.4 minutes (p<0.001) and underestimated WASO by 44.74±68.81 minutes (p<0.001). It accurately measured average resting HR and was able to distinguish SOL with some accuracy. However, the agreement between EMFIT QS and PSG on sleep-wake detection was very low (kappa=0.13, p<0.001). Discussion A consensus between PSG and EMFIT QS was found in SOL and average HR. There was a significant discrepancy and lack of consensus between the two devices in other sleep outcomes. These findings indicate that while EMFIT QS is not a credible alternative to PSG for sleep monitoring in clinical and research settings, consumers may find some benefit from longitudinal monitoring of SOL and HR.

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O020 What helped you and what prevented you from getting good sleep? Contribution of daily facilitators and barriers to adolescent sleep

SLEEP Advances ◽

10.1093/sleepadvances/zpab014.019 ◽

2021 ◽

Vol 2 (Supplement_1) ◽

pp. A9-A10

Author(s):

S Maskevich ◽

L Shen ◽

J Wiley ◽

S Drummond ◽

B Bei

Keyword(s):

Everyday Life ◽

Sleep Onset ◽

Sleep Time ◽

Sleep Onset Latency ◽

Onset Latency ◽

Previous Night ◽

Quality Sleep ◽

Sleep Environment ◽

Facilitators And Barriers ◽

Good Sleep

Abstract Introduction This intense longitudinal study examined factors that facilitate and hinder sufficient and good quality sleep in adolescents’ everyday life. Methods 205 (54.2% female, 64.4% non-white) Year 10–12 adolescents (Mage = 16.9 ± 0.9) completed daily morning surveys and wore actigraphy over 2 school-weeks and 2 subsequent vacation-weeks. Morning surveys assessed self-reported sleep and the usage of 8 facilitators and 6 barriers of sleep from the previous night. Linear mixed-effects models examined contribution of facilitators/barriers to actigraphy and self-reported total sleep time (TST) and sleep onset latency (SOL), controlled for age, sex, race, place of birth, and study day. Schooldays/non-schooldays was included as a moderator. Results Seven facilitators and two barriers were endorsed by high proportions (>30%) of adolescents as frequently (≥50% days) helping/preventing them from achieving good sleep. Facilitators predicting longer TST and shorter SOL, were: “follow body cues”, “manage thoughts and emotions”, “create good sleep environment”, “avoid activities interfering with sleep” and “plan bedtime and go to bed as planned” (only TST on schooldays). Barriers predicting shorter TST and longer SOL, were: “pre-bedtime thoughts and emotions”, “unconducive sleep environment”, “activities interfering with sleep”, “inconsistent routines” and “other household members’ activities”. Overall, facilitators or barriers explained an additional 1–5% (p-values < .001) of variance beyond the covariates. Discussion Adolescents perceive a range of factors as facilitating and as preventing sufficient and good quality sleep in everyday life. These factors are predictive of their sleep duration and onset latency, and need further research to understand their functions and clinical implications.

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Brief school-based interventions to assist adolescents’ sleep-onset latency: Comparing mindfulness and constructive worry versus controls

Journal of Sleep Research ◽

10.1111/jsr.12668 ◽

2018 ◽

Vol 27 (3) ◽

pp. e12668 ◽

Cited By ~ 10

Author(s):

Kate Bartel ◽

Chao Huang ◽

Ben Maddock ◽

Paul Williamson ◽

Michael Gradisar

Keyword(s):

Sleep Onset ◽

Sleep Onset Latency ◽

Onset Latency ◽

School Based ◽

School Based Interventions

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Abstract P199: Sleep Health Varies By Immigration Status And Acculturation Level In Women: Results From The American Heart Association Go Red For Women Strategically Focused Research Network

Circulation ◽

10.1161/circ.143.suppl_1.p199 ◽

2021 ◽

Vol 143 (Suppl_1) ◽

Author(s):

Ivan A Samayoa ◽

Nour Makarem ◽

Vivian Cao ◽

Moorea Maguire ◽

Huaqing Xi ◽

...

Keyword(s):

Sleep Duration ◽

Sleep Problems ◽

Immigrant Women ◽

Sleep Onset ◽

Research Network ◽

Sleep Onset Latency ◽

Onset Latency ◽

Immigration Status ◽

Sleep Health ◽

The Us

Introduction: The Healthy Immigrant Effect refers to the phenomenon that recent immigrants are on average healthier than their native-born counterparts. Greater immigrant acculturation to the US has been linked to increased risk of cardiovascular disease (CVD), frequently attributed to factors including the adoption of Western diets and decreased physical activity. While immigrants may have healthier habits than US adults, which may confer protection from CVD, there is little research on sleep health, particularly in immigrant women. Hypothesis: We hypothesized that immigrants, particularly those with greater acculturation, would have more sleep problems. Methods: Baseline data from a 1-y, community-based cohort of 506 women (61% racial/ethnic minority, mean age=37±16y) was used to evaluate cross-sectional associations between acculturation and sleep. Women self-reported their immigration status and national origin. Acculturation was measured from responses to questions regarding language preference, nativity (sorted by regions: Asia, Caribbean, Latin America, other), length of residency in the US, and age at immigration. Sleep duration, sleep quality, risk of obstructive sleep apnea (OSA) and insomnia were assessed using validated questionnaires. Logistic regression models adjusted for age, health insurance, education and BMI were used to evaluate associations between acculturation measures and sleep characteristics. Results: Women who were immigrants (n=176) reported lower mean sleep duration (6.60 ± 1.25 vs. 6.85 ± 1.22 h, p=0.02) compared to non-immigrants (n=323); non-immigrants were more likely than immigrants to sleep ≥7h/night (OR: 1.50, CI: 1.01-2.22, p=0.04). Women who immigrated to the US before vs. after age 25 y had lower odds of having sleep onset latency ≥26 min (OR:0.97, CI:0.95-1.00, p=0.03). Immigrant women living in the US >10y vs. <10y had more than 2-fold higher odds of having longer sleep onset latency (≥26 min) (OR:2.43, CI:1.09-5.41, p=0.03). Immigrants from the Caribbean were more likely than immigrants from other regions to be at a high risk for OSA (OR:2.65, CI:1.07-6.55, p=0.04). Conclusions: Compared to non-immigrants, immigrant women exhibit shorter habitual sleep duration. Sleep problems may vary by age of immigration, years lived in the US, and region of origin, as those who immigrated when they were older and those who had lived in the US>10 y required more time to fall asleep and Caribbean immigrants had higher OSA risk.

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