scholarly journals The impact of daily caffeine intake on nighttime sleep in young adult men

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Janine Weibel ◽  
Yu-Shiuan Lin ◽  
Hans-Peter Landolt ◽  
Joshua Kistler ◽  
Sophia Rehm ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Power Density ◽  
Continuous Treatment ◽  
Caffeine Intake ◽  
Sleep Structure ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Eeg Power ◽  
Nighttime Sleep ◽  
The Impact

AbstractAcute caffeine intake can delay sleep initiation and reduce sleep intensity, particularly when consumed in the evening. However, it is not clear whether these sleep disturbances disappear when caffeine is continuously consumed during daytime, which is common for most coffee drinkers. To address this question, we investigated the sleep of twenty male young habitual caffeine consumers during a double-blind, randomized, crossover study including three 10-day conditions: caffeine (3 × 150 mg caffeine daily), withdrawal (3 × 150 mg caffeine for 8 days, then switch to placebo), and placebo (3 × placebo daily). After 9 days of continuous treatment, electroencephalographically (EEG)-derived sleep structure and intensity were recorded during a scheduled 8-h nighttime sleep episode starting 8 (caffeine condition) and 15 h (withdrawal condition) after the last caffeine intake. Upon scheduled wake-up time, subjective sleep quality and caffeine withdrawal symptoms were assessed. Unexpectedly, neither polysomnography-derived total sleep time, sleep latency, sleep architecture nor subjective sleep quality differed among placebo, caffeine, and withdrawal conditions. Nevertheless, EEG power density in the sigma frequencies (12–16 Hz) during non-rapid eye movement sleep was reduced in both caffeine and withdrawal conditions when compared to placebo. These results indicate that daily caffeine intake in the morning and afternoon hours does not strongly impair nighttime sleep structure nor subjective sleep quality in healthy good sleepers who regularly consume caffeine. The reduced EEG power density in the sigma range might represent early signs of overnight withdrawal from the continuous presence of the stimulant during the day.

scholarly journals The impact of daily caffeine intake on nighttime sleep: signs of overnight withdrawal?

2020 ◽  
Author(s):  
Janine Weibel ◽  
Yu-Shiuan Lin ◽  
Hans-Peter Landolt ◽  
Joshua Kistler ◽  
Sophia Rehm ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Power Density ◽  
Caffeine Intake ◽  
Sleep Structure ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Caffeine Withdrawal ◽  
Eeg Power ◽  
Nighttime Sleep ◽  
The Impact

AbstractAcute caffeine intake can delay sleep initiation and reduce sleep intensity, particularly when consumed in the evening. However, it is not clear whether these sleep disturbances disappear when caffeine is continuously consumed during daytime, which is common for most coffee drinkers. To address this question, we investigated the sleep of twenty male young habitual caffeine consumers during a double-blind, randomized, crossover study including three 10-day conditions: caffeine (3 x 150 mg caffeine daily), withdrawal (3 x 150 mg caffeine for eight days, then switch to placebo), and placebo (3 x placebo daily). After nine days of continuous treatment, electroencephalographically (EEG)-derived sleep structure and intensity were recorded during a scheduled 8-h nighttime sleep episode starting 8 (caffeine condition) and 15 h (withdrawal condition) after the last caffeine intake. Upon scheduled wake up time, subjective sleep quality and caffeine withdrawal symptoms were assessed. Unexpectedly, neither polysomnography-derived total sleep time, sleep latency, sleep architecture, nor subjective sleep quality differed among placebo, caffeine, and withdrawal conditions. Nevertheless, EEG power density in the sigma frequencies (12-16 Hz) during non-rapid eye movement (NREM) sleep was reduced in both caffeine and withdrawal conditions when compared to placebo. These results indicate that daily caffeine intake in the morning and afternoon hours does not strongly impair nighttime sleep structure or subjective sleep quality in healthy good sleepers who regularly consume caffeine. The reduced EEG power density in the sigma range might represent early signs of overnight withdrawal from the continuous presence of the stimulant during the day.Statement of SignificanceCaffeine consumption is highly prevalent worldwide and has been repeatedly shown to acutely disrupt sleep, particularly when consumed after several days of abstinence or close to bedtime. However, commonly, caffeine is consumed daily and during daytime. Our well-controlled laboratory study revealed that this common pattern of intake affects nighttime sleep differently: While slow-wave sleep duration or slow-wave activity were rather similar compared to placebo, caffeine intake surprisingly reduced EEG power density in the sigma frequencies. In the light of earlier studies, this might present early signs of caffeine withdrawal which occurs due to overnight caffeine abstinence. The present findings provide novel insights into the impact of daily presence and nightly abstinence of caffeine on nighttime sleep in regular consumers.

Impact of Treatment for Nasal Cavity Disorders on Sleep Quality: Systematic Review and Meta-analysis

2021 ◽  
pp. 019459982110295
Author(s):  
Jacob Fried ◽  
Erick Yuen ◽  
Kathy Zhang ◽  
Andraia Li ◽  
Nicholas R. Rowan ◽  
...  
Keyword(s):  
Systematic Review ◽  
Sleep Quality ◽  
Nasal Obstruction ◽  
Meta Analysis ◽  
Mean Difference ◽  
Cochrane Library ◽  
Life Questionnaire ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
The Impact

Objective To determine the impact of treatment for patients with nasal obstruction secondary to allergic rhinitis (AR) and nasal septal deviation (NSD) on sleep quality. Data Sources Primary studies were identified though PubMed, Scopus, Cochrane Library, and Web of Science. Review Methods A systematic review was performed by querying databases for articles published through August 2020. Studies were included that reported on objective sleep parameters (apnea-hypopnea index) and sinonasal and sleep-specific patient-reported outcome measures: Rhinoconjunctivitis Quality of Life Questionnaire, Nasal Obstruction Symptom Evaluation, Epworth Sleepiness Scale (EpSS), and Pittsburgh Sleep Quality Index (PSQI). Results The database search yielded 1414 unique articles, of which 28 AR and 7 NSD studies were utilized for meta-analysis. A total of 9037 patients (8515 with AR, 522 with NSD) were identified with a mean age of 35.0 years (35.3 for AR, 34.0 for NSD). Treatment for AR and NSD significantly improved subjective sleep quality. For AR, the EpSS mean difference was −1.5 (95% CI, –2.4 to –0.5; P = .002) and for the PSQI, –1.7 (95% CI, –2.1 to –1.2; P < .00001). For NSD, the EpSS mean difference was −3.2 (95% CI, –4.2 to –2.2; P < .00001) and for the PSQI, –3.4 (95% CI, –6.1 to –0.6; P = .02). Conclusion Subjective sleep quality significantly improved following treatment for AR and NSD. There were insufficient data to demonstrate that objective metrics of sleep quality similarly improved.

scholarly journals Warm Steam Inhalation before Bedtime Improved Sleep Quality in Adult Men

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Tomohisa Ichiba ◽  
Kenta Kakiuchi ◽  
Masahiro Suzuki ◽  
Makoto Uchiyama
Keyword(s):  
Sleep Quality ◽  
Respiratory Rate ◽  
Power Density ◽  
Single Channel ◽  
Analog Scale ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Adult Men ◽  
Sham Condition ◽  
Sleep Difficulties

In humans, the inhalation of warm steam has been reported to decrease the respiratory rate. However, the effects of warm steam inhalation on sleep have not been studied closely. This study aimed to examine the effects of warm steam inhalation before bedtime on subsequent sleep quality. The participants included 17 adult men with mild sleep difficulties and anxiety. All experiments were conducted in the participants’ homes. The participants were instructed to wear a warm steam-generating mask or sham mask over the nose and mouth for 15 minutes immediately before habitual bedtime and were then allowed to sleep until their habitual waking time. The functional mask provided approximately 600 mg of steam for 10 minutes and maintained an interior temperature of 38–40°C for 15 minutes. We evaluated the participants’ electrocardiograms and subjective moods while wearing the mask. During sleep, electroencephalograms (EEGs) were recorded using a single-channel portable device. In the morning, each participant was instructed to report their sleep details subjectively using a visual analog scale. At bedtime, the subjects’ subjective apprehension of the next day was reduced significantly under steam inhalation, compared with the sham condition. Compared to the sham condition, steam inhalation before bedtime was associated with a higher EEG delta power density during the first third of sleep episodes and better subjective sleep quality in the morning. These results suggest that safe and easy inhalation of warm steam via a steam-generating mask improves psychological relaxation and sleep.

scholarly journals Investigating the Sleep–Pain Relationship in Youth with Sickle Cell Utilizing mHealth Technology

2019 ◽  
Vol 44 (3) ◽  
pp. 323-332 ◽  
Author(s):  
Cecelia R Valrie ◽  
Rebecca L Kilpatrick ◽  
Kristen Alston ◽  
Krystal Trout ◽  
Rupa Redding-Lallinger ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Sickle Cell ◽  
Multilevel Models ◽  
Sleep Latency ◽  
Pain Severity ◽  
Future Research ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Ecological Momentary ◽  
Nighttime Sleep

Abstract Objectives The current study utilized mHealth technologies that were objective (e.g., sleep actigraphy and pulse oximetry) and time-sensitive (e.g., ecological momentary assessments [EMAs]) to characterize sleep in youth with sickle cell disease (SCD) and investigate the relationships between sleep variables and pain. It also investigated the influence of age on sleep and the sleep–pain relationship. Methods Eighty-eight youth with SCD (aged 8–17 years) were recruited from three regional pediatric SCD clinics. Youth completed twice daily EMAs for up to 4 weeks to assess nighttime subjective sleep quality and daily pain. They also wore a sleep actigraph for 2 weeks to assess sleep duration, sleep efficiency, and sleep latency, and a wrist-worn pulse oximeter for two nights to assess whether they had sleep apnea. Multilevel models were calculated predicting daily SCD pain using the sleep variables, age, and the interaction between age and the sleep variables. Results None of the sleep variables were related to one another. Poor subjective sleep quality during the night was related to high pain severity the next day, and high pain was related to poor subjective sleep quality that night. Older age was associated with poorer subjective sleep quality, shorter duration of nighttime sleep, and high sleep latency. Also, findings indicated that as age increased, the strength of the relationship between poor continuous subjective sleep quality and high pain severity increased. Conclusions Future research is needed to examine possible mechanisms connecting subjective sleep quality to high pain.

scholarly journals Subjective sleep quality and its etiology in the emergency department

CJEM ◽  
2018 ◽  
Vol 21 (2) ◽  
pp. 249-252 ◽  
Author(s):  
Jean-Marc Chauny ◽  
Jean Paquet ◽  
Julie Carrier ◽  
Gilles Lavigne ◽  
Martin Marquis ◽  
...  
Keyword(s):  
Emergency Department ◽  
Sleep Quality ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
Hospital Units ◽  
Modifying Factors ◽  
Modifiable Factors ◽  
Emergency Department Stay ◽  
Waking Up ◽  
Nighttime Sleep

AbstractObjectivePatient sleep quality has a significant impact on recovery. However, most hospital units do not provide an optimal environment for sleep and there are currently no data available on how well patients sleep during their emergency department stay. The main objective of this study was to assess the subjective quality of nighttime sleep and factors that affect sleep in the emergency department (ED).MethodsA prospective sample of patients aged 18 years and older who presented to the ED from July 2015 to October 2015 was investigated. All participants were on stretcher and slept at least one night in the ED. Participants were asked to complete a sleep questionnaire adapted to the ED environment on sleep quality and its potentially modifying factors.ResultsA total of 235 patients participated in the study (mean age: 64±20 years, 51% women). Compared to the week at home prior to admission, subjective sleep quality was lower in the ED (p<0.001): almost half the participants took more than 30 minutes to fall asleep, and they reported waking up 3.5 times per night on average. Lower subjective sleep quality in the ED was associated with higher stress, noise, and pain, as well as with stretcher comfort and lower home sleep quality the week prior to admission.ConclusionsSubjective sleep quality in the emergency department is not optimal, and is influenced by stress, noise, pain, and stretcher comfort, all potentially modifiable factors.

Leg thermal therapy improved sleep structure and subjective sleep quality in chronic heart failure

2013 ◽  
Vol 14 ◽  
pp. e260
Author(s):  
H. Sawatari ◽  
M. Miyazono ◽  
M. Nishizaka ◽  
S. Ando ◽  
K. Sunagawa ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Sleep Quality ◽  
Thermal Therapy ◽  
Sleep Structure ◽  
Subjective Sleep Quality ◽  
Subjective Sleep

scholarly journals The Impact of Deep Brain Stimulation on Sleep and Olfactory Function in Parkinson’s Disease

2015 ◽  
Vol 9 (1) ◽  
pp. 70-72 ◽  
Author(s):  
David P Breen ◽  
Hu Liang Low ◽  
Anjum Misbahuddin
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Deep Brain Stimulation ◽  
Sleep Quality ◽  
Brain Stimulation ◽  
Olfactory Function ◽  
Subjective Sleep Quality ◽  
Subjective Sleep ◽  
The Impact ◽  
Deep Brain

Objective: Relatively little is known about the effects of deep brain stimulation on non-motor symptoms. The aim of this pilot study was to assess the impact of deep brain stimulation on sleep and olfactory function in Parkinson’s disease. Methods: Subjective sleep quality and olfactory testing were performed on 11 consecutive Parkinson’s disease patients (eight men and three women) undergoing bilateral subthalamic nucleus stimulation. All patients consented to undergo clinical assessments prior to the procedure, and at regular intervals afterwards. Results: Subjective sleep quality improved at six months following deep brain stimulation and this benefit was sustained in the majority of patients at later follow-up assessments. There was no significant change in olfactory function following deep brain stimulation. Conclusions: In addition to having beneficial effects on motor function and quality of life, bilateral subthalamic nucleus stimulation improves subjective sleep quality in Parkinson’s disease.

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.

Subjective sleep quality and sleep architecture in aging

2019 ◽  
Vol 64 ◽  
pp. S231-S232
Author(s):  
D. Lorrain ◽  
D. Bélisle ◽  
I. Viens
Keyword(s):  
Sleep Quality ◽  
Sleep Architecture ◽  
Subjective Sleep Quality ◽  
Subjective Sleep
Sign in / Sign up

Export Citation Format

Share Document