Journal of Turkish Sleep Medicine

Journal of Turkish Sleep Medicine

Basic info

  • Publisher: Galenos Publishing House
  • Country of publisher: turkey
  • Date added to EuroPub: 2019/Aug/13

Subject and more

  • LCC Subject Category: Medicine, Sleep
  • Publisher's keywords: Medicine, Sleep Medicine
  • Language of fulltext: english

Publication charges

  • Article Processing Charges (APCs): No
  • Submission charges: No
  • Waiver policy for charges? No

Editorial information

Open access & licensing

  • Type of License: CC BY-NC-ND
  • License terms
  • Open Access Statement: Yes
  • Year open access content began: 2014
  • Does the author retain unrestricted copyright? False
  • Does the author retain publishing rights? False

Best practice polices

  • Permanent article identifier: DOI
  • Content digitally archived in: Other
  • Deposit policy registered in: None

This journal has '13' articles

Restless Legs Syndrome and Cognitive Functions

Restless Legs Syndrome and Cognitive Functions

Authors: Şenay Aydın
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Abstract

Objective: Restless Legs syndrome (RLS) is a common sleep disorder in clinical practice. In the prevalence studies conducted in different populations for RLS, different results ranging from 5% to 15% were obtained. This ratio ranges from 3.19% to 22.2% in Turkey. RLS, known to have adverse effects on sleep quality, can also affect mood, attention and cognitive functions. In our study, we aimed to investigate the possible effect of RLS on cognitive functions. Materials and Methods: In this study, patients diagnosed with RLS in the neurology outpatient clinic of our hospital were evaluated. Patients with possible mild cognitive impairment were excluded from the study by using the Standardized Mini Mental Test. After exclusion of secondary causes for RLS, 45 patients with idiopathic RLS and 20 healthy individuals were included in the study. Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Insomnia Severity Index (ISI), International RLS Severity Scale, Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and Montreal Cognitive Assessment (MoCA) Scale were administered to all subjects. Results: In the RLS group; there was a statistically significant decrease in the MoCA components which demonstrate particularly orientation, abstract thinking and memory functions and in the MoCA total scores, compared to the control group (p=0.032, p=0.012, p=0.024, p=0.019, respectively). At the same time, there was a significant difference in the PSQI, ESS, ISI, BDI, and BAI values in the RLS cases. Conclusion: This study shows that the idiopathic RLS which correlated with disease duration may lead to insufficiency over functions in cognitive domains especially orientation, abstract thinking, and memory.

Keywords: Restless Legs syndrome, cognitive functions, orientation, abstract thinking, memory
The Relationship Between Restless Legs Syndrome and Cardiovascular Risk Factors

The Relationship Between Restless Legs Syndrome and Cardiovascular Risk Factors

Authors: Şenay Aydın, Cengiz Özdemir, Sinem Nedime Sökücü
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Abstract

Objective: Restless Legs syndrome (RLS) is one of the common sleep disorders in the community. There are many studies on the relationship between sleep disorders and diabetes, hypertension, hyperlipidemia, obesity, and metabolic dysregulation. However, the results are contradicting in the studies conducted in cases with RLS. In this study, we retrospectively examined the possible relationship between cardiovascular risk factors and RLS. Materials and Methods: The study included 107 patients (group 1) diagnosed with RLS according to the diagnostic criteria recommended by the international RLS study group and 97 patients with the diagnosis of simple snoring (group 2) among the patients who were prescribed a diagnosis of sleep disorder in the sleep laboratory. Demographic, laboratory and polysomnographic data of all cases were retrospectively reviewed. Results: There was no significant difference between the groups in terms of age, gender, smoking, and alcohol use, however, weight, neck circumference, waist circumference, and body mass index were detected significantly higher (p=0.008, p=0.020, p=0.001, p=0.002, respectively). In addition, diastolic and systolic arterial blood pressure values and total cholesterol, low density lipoprotein-cholesterol, and triglyceride levels measured at the night of the examination were significantly different between the groups, and the presence of Metabolic syndrome was observed significantly higher in the RLS group (p=0.001, p=0.001, p=0.024, p=0.033, p=0.020, p=0.002, respectively). Conclusion: The incidence of hypertension, hyperlipidemia, obesity, and Metabolic syndrome increases in RLS patients. Further prospective studies are needed to elucidate the potential mechanisms underlying this correlation between the RLS and cardiovascular risk factors.

Keywords: Hyperlipidemia, hypertension, Restless Legs syndrome, cardiovascular risk factors, obesity
Peripheral Nerve Function Changes Due to Hypoxia in Obstructive Sleep Apnea

Peripheral Nerve Function Changes Due to Hypoxia in Obstructive Sleep Apnea

Authors: Aynur Yılmaz Avcı, Suat Avcı
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Abstract

Introduction: Chronic hypoxia is known to be one of the risk factors for peripheral neuropathy. However, the effect of intermittent hypoxia on peripheral nerves is not fully understood. This study evaluated the relation between intermittent hypoxia and peripheral nerve function in Obstructive Sleep Apnea (OSA) patients. Materials and Methods: In this retrospective study, 86 patients who underwent polysomnography (PSG) and electroneuromyography were enrolled. Participants with diseases affecting peripheral nerves and lung function were excluded from the study. Hypoxia parameters were obtained from the PSG study. Lower extremity motor and sensory nerve conduction studies of all patients were evaluated. Results: In patients with OSA, peroneal nerve distal motor latency and sural sensory nerve action potential amplitude was low and velocity was significantly slower than controls (p<0.001, p<0.04, p<0.001, respectively). After adjustment for age and body mass index, the results remained significantly (p<0.001, p<0.01, p<0.001, respectively). The nerve conduction results were significantly correlated with the hypoxia parameters. After adjustment for confounding factors, logistic regression analyses revealed that hypoxia parameters were independently associated with nerve conduction results. Conclusion: OSA and intermittent hypoxia may affect both motor and sensory nerve conduction, which suggests that subclinical sensorimotor peripheral neuropathy is associated with OSA. The related intermittent hypoxia and OSA may be a cause of axonal and demyelinating neuropathies.

Keywords: Sleep Apnea syndrome, sleep-disordered breathing, electromyography, hypoxia, neuropathy
Athlete Sleep Behavior Questionnaire - Turkish Version: Study of Validity and Reliability

Athlete Sleep Behavior Questionnaire - Turkish Version: Study of Validity and Reliability

Authors: Abdulkerim Darendeli, Gürkan Diker, Ziynet Çınar
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Abstract

Objective: Athlete sleep behavior questionnaire (ASBQ) is a new, valid and reliable questionnaire for evaluating the sleep behaviors of elite athletes. The main objective of the current study was to provide evidence for the validity and reliability of the Turkish version of the ASBQ (ASBQ-TR). Materials and Methods: Ninety-seven athletes and eighty-three nonathletes were included in the current study and asked to complete the 18-item ASBQ-TR. A sub-group of athletes (n=50) completed the ASBQ-TR twice, 7 days apart. The ASBQ was translated into English twice and then back-translated to Turkish after the permission of the author was received. Test-retest reliability and internal consistency were performed via intraclass correlation coefficient (ICC) and Cronbach’s alpha, respectively. Results: There was a significant difference between the athlete and non-athlete groups in ASBQ-TR total score (38.4 and 36.2 respectively, p<0.05). Test-retest reliability of the questionnaire was acceptable (ICC=0.85). The factor loadings of ASBQ-TR were between 0.41 and 0.82. One of the 18-items of the questionnaire was removed due to the factor loading (below 0.40). Conclusion: The ASBQ-TR is a 17-item valid and reliable tool that can be used to identify sleep challenges that athletes face. The ASBQ-TR can be used as a practical tool for researchers and coaches evaluating the sleep behaviors of elite athletes. This tool may also be used to examine the sleep behavior differences among sports with different recovery needs and training loads.

Keywords: Reliability, validity, Turkish version, athlete, sleep behavior
The Relationship of Dry Eye Disease with Depressive Symptom Scores and Insomnia

The Relationship of Dry Eye Disease with Depressive Symptom Scores and Insomnia

Authors: Didem Ayyıldız, Taha Ayyıldız
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Abstract

Objective: The aim of this study was to investigate whether there is a difference in terms of depressive symptom and insomnia scores between patients with dry eye disease and healthy controls. Materials and Methods: Forty patients who applied to ophthalmology outpatient clinic with dry eye symptoms and had no history of chronic disease or drug use and who were diagnosed with dry eye for the first time in our clinic, and 34 healthy controls were included in the study. Beck Depression Inventory in order to evaluate the depressive symptom scores and the Insomnia Severity Index scores for the severity of insomnia were analyzed. Independent samples t-test was used to determine whether there was any difference between the groups. Results: The depressive symptom score was 14.5±6.8 and insomnia severity score was 13.4±5.2 in individuals with dry eye disease; while depressive symptom and insomnia severity scores in the control group were 5.5±1.8 and 4.5±2.2, respectively. The difference between the groups was statistically significant (p=0.001). Conclusion: It is thought that revealing the relationship between dry eye disease and depressive symptoms and insomnia is important in understanding the pathophysiology of these diseases, as well as the multisystemic approach including evaluation of comorbid psychological/ psychiatric conditions besides the objective symptoms of the disease, will have a positive effect on the quality of life of individuals.

Keywords: Dry eye, depression, insomnia
Evaluation of Pre and Postoperative Polysomnographic Data in Patients with Idiopathic Parkinson’s Disease Undergoing Deep Brain Stimulation Intended Bilateral Subthalamic Nucleus

Evaluation of Pre and Postoperative Polysomnographic Data in Patients with Idiopathic Parkinson’s Disease Undergoing Deep Brain Stimulation Intended Bilateral Subthalamic Nucleus

Authors: Nihan Altan Torun, Gülçin Benbir Şenel, Ayşegül Gündüz, Derya Karadeniz, Güneş Kızıltan, Sibel Ertan, Sabri Aydın, Selin Yağcı, Hülya Apaydın
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Abstract

Objective: Deep brain stimulation (DBS) intended to bilateral subthalamic nucleus (STN) used in the Parkinson’s disease (PD) has been reported to lead improved subjective sleep quality, increased sleep efficiency, decreased wakefulness time after sleep, and increased total sleep time. On this basis, we aimed to evaluate the sleep structure and quality by polysomnographic (PSG) investigation parameters in patients diagnosed with idiopathic PD who were planned to undergo bilateral STN-DBS. Materials and Methods: Inclusion criteria were determined as the presence of a clinical diagnosis of idiopathic PD, being 70 years and below, having at least 5 years of disease duration, and being a suitable candidate for STN DBS surgery. Patients were excluded from the study in the presence of dementia or psychiatric disturbances, cardiac pacemaker, and history of cerebrovascular disease. Our study was approved by Local Ethical Committe of Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, and signed consent form was obtained from participants. Results: Eight patients were included in our study; the mean age was calculated as 53.6±4.1 years. When pre- and postoperation PSG parameters were compared, the total sleep time was decreased, however it was not found statistically significant (p=0.840). REM sleep latancy was significantly shortened postoperatively (p=0.003). It was observed that other PSG parameters measuring the macro- and micro-structure of sleep did not change significantly (p>0.050). Conclusion: Many studies have reported substantial improvements in parameters obtained by polysomnography, while only one study has reported that sleep was not normalized although subjective sleep quality was increased. In our study, except for shortening in the REM sleep period, no significant improvement in PSG parameters was observed. The effect of bilateral STB-DBS on sleep is still one of the controversial issues and waits to be demonstrated in the larger series.

Keywords: Parkinson’s disease, subthalamic deep brain stimulation, polysomnography
The Effect of Light on Daily Life Activities and Sleep in Patients with Alzheimer’s Disease

The Effect of Light on Daily Life Activities and Sleep in Patients with Alzheimer’s Disease

Authors: Güler Balcı Alparslan, Ayşe Özkaraman, Demet Özbabalık, Ertuğrul Çolak
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Abstract

Objective: The aim of this study is to identify the effect of the light on activities of daily living and sleep in patients with Alzheimer’s disease. Materials and Methods: In this study, the actigraph devices, sleep and light application forms and Barthel Daily Life Activities forms were used. The study was conducted in an Alzheimer care center in Eskişehir. At first, all of the forms were filled and the wrist actigraphies were worned. The patients with actigraphies were monitored one week before the light application. During the second week, the light was applied to patients and the actigraphies were recorded. Actigraphies were recorded total of 4 weeks for each patient (average 30 minutes per day, around 3.00 pm, from 50 cm distance and 1000 lux over 7 days). The sleep and light application forms were filled. After than, actigraphies of patients were recorded over the third and fourth weeks. Results: There was a significant difference for the sleep durations (p<0.05) and the inactivity status (p=<0.001) in patients with Alzheimer’s disease who were applied light , however no significant difference was found for the intensity of activities (p>0.05). Conclusion: It was determined that the light has no effect on the intensity of activities, though it extended the periods of inactivity and sleep.

Keywords: Alzheimer’s disease, non-pharmacological therapy, nursing, sleep disorders
The Effectiveness of Acceptance and Commitment Therapy on Insomnia Patients (A Single-arm Trial Plan)

The Effectiveness of Acceptance and Commitment Therapy on Insomnia Patients (A Single-arm Trial Plan)

Authors: Ali Zakiei, Habibolah Khazaie
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Abstract

Objective: Studies focusing on the effects of acceptance and commitment therapy (ACT) on insomnia and sleep components are limited in number. Therefore, it seems that the effects of this therapy method as a new psychological treatment need to be explored in a comprehensive fashion. Accordingly, the current study has been carried out in order to evaluate the effectiveness of ACT on insomnia patients. Materials and Methods: Current study uses a single-arm trial plan where four participants are chosen from among individuals who visited Kermanshah University Faculty of Medicine, Sleep Disorders Research Center, Kermanshah in 2018. Based on the results from polysomnography and psychological interviews, insomnia of the participants has been confirmed. Individual participants attended eight sessions of ACT. Results: The results show variance in the scores for variables of “experiential avoidance”, “dysfunctional beliefs and attitudes about sleep”, “acceptance of sleep difficulties”, and “sleep quality” for all four participants after the ACT sessions were completed. Moreover, the results of the study show that the level of total sleep for all four participants increased. This means that ACT had a significant impact on increasing the sleep duration. With regards to other sleep-related variables, the variance trend after the therapy was significant. Conclusion: Based on the results of the study, it can be said that ACT improves sleep quality of insomnia patients. Therefore, therapists are recommended to utilize this therapeutic method in order to mitigate the problems of insomnia patients.

Keywords: Insomnia, sleep quality, acceptance and commitment therapy
Validity and Reliability of the Sleep and Lifestyle Questionnaire

Validity and Reliability of the Sleep and Lifestyle Questionnaire

Authors: Tuba Bay, Ayşe Ergün
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Abstract

Objective: The aim of this study was to investigate the validity and reliability of the Turkish version of the Sleep and Lifestyle Questionnaire for adolescents. Materials and Methods: The Sleep and Lifestyle Questionnaire consists of 12 questions developed to assess sleep, television, and computer habits of adolescents. The questionnaire was applied to a total of 1.476 students, and 112 students were retested four weeks later. The content validity of the questionnaire was evaluated by opinions from 10 experts, construct validity was evaluated by chi-square analysis. The test-retest was performed for the reliability of the questions in the questionnaire and kappa for the categorical variable, Spearman’s correlation analysis for ordinal data, and the percentage of agreement for continuous variables were calculated. Results: Content validity index of Sleep and Lifestyle Questionnaire was found as 0.99. The chi-square analysis of the construct validity demonstrated that the students whose sleep time was less than the median has a statistically significant higher rate of falling asleep, difficulty in awakening, and being sleepy at school. In the Sleep and Lifestyle Questionnaire; having a television in the bedroom which was categorically variable, test-retest kappa value was 0.84, testretest correlations of four questions contain ordinal variables were between 0.66-0.81, and the percentage of test-retest agreement of six continuously varying questions was found between 50.9-84.8%. Conclusion: The Sleep and Lifestyle Questionnaire was found to be a valid and reliable tool. The questionnaire can be used to assess lifestyle factors that affect sleep habits and sleep patterns of adolescents in school health studies.

Keywords: Sleep, Sleep and Lifestyle Questionnaire, validity, reliability
The Effect of Physical Activity Level and Sleep Quality on Quality of Life in Pregnant Women

The Effect of Physical Activity Level and Sleep Quality on Quality of Life in Pregnant Women

Authors: Alis Kostanoğlu, Ayşe Sena Manzak, Ayşegül Şahin
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Abstract

Objective: Pregnancy is a period in which the level of physical activity is generally low. Physiological, psychological, physical and emotional changes in pregnancy negatively affect the sleep quality of pregnant women. It is suggested that inactivity and sleep changes in pregnant women may have effects on the quality of life. The aim of our study is to evaluate the effects of physical activity level and sleep quality on quality of life in pregnant women. Materials and Methods: A total of 104 uncomplicated pregnant women from 1-3. trimesters were included in the study. The self-prepared “patient assessment questionnaire”, pregnancy physical activity questionnaire, Pittsburgh Sleep Quality Index and EQ-5D-3L were used as rating scale. Results: 51.9% of the pregnant women had poor sleep quality. When the trimesters were compared, it was seen that while total physical activity level did not change, sleep quality and quality of life deteriorated (p<0.05). Though no statistically significant relation was found between physical activity level and quality of life (p>0.05), there was a negative statistically significant relation between sleep quality and quality of life (r=-0.33; p=0.001). Conclusion: In our study it was determined that the physical activity levels did not change as the trimesters progressed, but the quality of sleep deteriorated and affected the quality of life negatively in pregnant women.

Keywords: Pregnancy, physical activity, sleep quality, quality of life
Investigation of the Prevalence of Sleep Disorders in Medical Students and Examination of Its Change by Classes, Gender and Body Mass Index

Investigation of the Prevalence of Sleep Disorders in Medical Students and Examination of Its Change by Classes, Gender and Body Mass Index

Authors: Fatih Yavuz, Burak Kabaağıl, Sevda İsmailoğulları, Gökmen Zararsız, Hüseyin Per
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Abstract

Objective: Medical students are under the risk of developing sleep disorders due to heavy curriculum and long studying hours. This condition causes sleep disorders to occur more frequently in medical faculty students compared to the normal society. The present study aims to determine the prevalence of sleep disorders in medical students and the examination of change according to classes. Materials and Methods: A questionnaire that based on ICSD-3 for assessing insomnia, Restless Legs syndrome (RLS) and parasomnia, Epworth Sleepiness Scale for excessive daytime sleepiness (EDS), and Berlin Questionnaire for Sleep Apnea syndrome (SAS) were used. Results: In 762 students, the prevalence value was obtained as 22.8% for total EDS, 11.2% for insomnia, 25.2% for bruxism, and 5.6% for RLS. It was concluded that 35.5% of students were under the risk of developing SAS. It was observed that no significant difference was found between the classes in term of developing a sleep disorder. Among the genders, while EDS and sleep talking were significantly high in women, sleep terror was significantly high in men. Sleep eating status was found to be significantly high frequency in students with a body mass index over 30. Conclusion: This study proved that risk of developing insomnia and SAS have a much higher frequency in medical faculty students than society.

Keywords: Sleep disorders, medical students, insomnia, sleep apnea, excessive daytime sleepiness, parasomnia
Effects of Overnight Sleep Deprivation on Appetite and Physical Performance in Elite Female Soccer Players

Effects of Overnight Sleep Deprivation on Appetite and Physical Performance in Elite Female Soccer Players

Authors: Hamid Arazi, Javad Mehrabani, Mojdeh Irandoost, Eisa Khaleghimamaghani
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Abstract

Objective: Sleep and awakening are a biological cycle that is affected by physiological function, light and darkness, work programs, and other activities. The vital role of sleep in body function and appetite is essential, and this is especially important for athletes. Meanwhile, the conditions of soccer players are such that they are deprived of sleep, and this is a risk to a professional athlete. The aim of the current study was to examine the effects of overnight sleep deprivation on appetite and physical performance in elite female soccer players. Materials and Methods: Twelve elite female soccer players in the premier league of Iran with 10-year history were selected to the study (age: 28.50±3.45 yr, height: 160.50±4.07 cm, weight: 55.12±3.52 kg, body mass index: 21.38±1.06 kg/m2). Subjects were evaluated in two rounds with normal sleep and deprivation of night sleep (DNS) and between these two rounds was also a recovery week. The evaluations included physical performance and appetite. Results: DNS had a significant effect on appetite (feeling hungry, full, satiate, and eating desire), reaction time, balance (static and dynamic), anaerobic power (peak power, minimum power, average power, and fatigue index), and aerobic performance (p≤0.05). Conclusion: DNS may induce disruptions on the appetite and physical performance of elite soccer players. For these, athletes should take into consideration adequate night sleep before performing physical tasks.

Keywords: Soccer players, sleep, circadian rhythm, appetite, performance
A Case of Amiotrophic Lateral Sclerosis Presenting with Daytime Excessive Sleepiness

A Case of Amiotrophic Lateral Sclerosis Presenting with Daytime Excessive Sleepiness

Authors: Turgay Demir, Kezban Aslan, Mehmet Balal, Şebnem Bıçakcı
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Abstract

Amyotrophic lateral sclerosis is a neurodegenerative disease with progressive motor neuron degeneration in primary motor cortex, corticospinal pathways, brain stem and spinal cord. The disease may start with asymmetrical weakness in the arms and legs, hyperreflexia, myolysis, cramps, twitching, fatigue, difficulty in speech and swallowing, emotional lability due to upper and lower motor neuron involvement. Sleep disorders may occur generally during the course of the disease in amyotrophic lateral sclerosis. Here a case of amyotrophic lateral sclerosis presenting with excessive daytime sleepiness was presented.

Keywords: Amyotrophic lateral sclerosis, sleep disorders, excessive daytime sleepiness, motor neuron

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