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Talaia AM, Elnahhas A, Talaia NM, Abdelaal A. Prevalence of restless legs syndrome in adults with epilepsy: A systematic review and meta-analysis of observational studies. Sleep Med 2024; 119:258-266. [PMID: 38710131 DOI: 10.1016/j.sleep.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/27/2024] [Accepted: 05/02/2024] [Indexed: 05/08/2024]
Abstract
INTRODUCTION Epilepsy is a common neurological disorder that significantly contributes to the worldwide disease burden. Restless legs syndrome is sleep-related movement disorder that causes uncomfortable sensations in the legs with an irresistible urge to move them. The aim of this study is to comprehensively assess the current evidence to estimate the prevalence of restless legs syndrome (RLS) in adults with epilepsy (AWE) and to compare it to healthy controls. METHODS PubMed, Medline, Scopus, and Web of Science databases were searched for observational studies reporting the prevalence of RLS in AWE. The modified Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of the studies. Comprehensive Meta-Analysis software (version 3.0) was used to perform data analysis. The heterogeneity of the studies was assessed using the I2 index. The pooled prevalence of RLS in AWE and the odds ratio were calculated based on the random-effect model. Sensitivity analysis was assessed. A funnel plot and Egger's test were used to investigate publication bias. Subgroup analysis and univariate meta-regression analysis were done. RESULTS Based on the analysis of 17 studies (2262 AWE patients), the prevalence of RLS was 14.9 % (95%CI, 10.4%-21 %). This rate was highest in the Americas (35.3 %; 95 % CI: 19.7-54.9 %) and lowest in Asian countries (11.6 %). The risk of RLS was significantly higher in AWE patients compared to health controls (12 studies, OR = 2.09; 95 % CI: 1.53-2.85, I2 = 91.69 %, P < 0.001). subgroup analysis showed Variations in RLS rates between studies depending on quality scores, methodology, and diagnostic criteria. The funnel plot and Egger's test suggest there was publication bias. Sensitivity analysis showed that none of the studies on their own significantly affected the results. CONCLUSIONS This meta-analysis provides the first pooled estimate of RLS prevalence in AWE. RLS occurs in 15 out of every 100 AWE patients, and the risk is high compared to healthy controls. However, the findings need to be confirmed in future studies owing to limitations in the analysis and study design.
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Affiliation(s)
| | | | | | - Abdelaziz Abdelaal
- Harvard Medical School, Boston, MA, United States; Doheny Eye Institute, Los Angeles, CA, United States
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Sadeghi-Bahmani D, Mohammadian Y, Sadeghi Bahmani L, Khazaie H, Piri N, Gross JJ, Motl RW. Change in Insomnia and Depressive Symptoms During COVID-19: A Prospective Longitudinal Study of Iranian Women with Multiple Sclerosis. Behav Sleep Med 2023; 21:741-756. [PMID: 36694352 DOI: 10.1080/15402002.2022.2157417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND There is some evidence that sleep patterns and psychological health have worsened in the general population as a result of the COVID-19-pandemic. Persons with multiple sclerosis (MS) represent a particularly vulnerable population for COVID-19 infections and effects of restrictions. The present study investigated whether insomnia and depressive symptoms, as well as other MS-related symptoms (i.e. fatigue and paresthesia), changed from before to during the COVID-19-pandemic among persons with diagnosed MS. METHOD A sample of 90 Iranian females with MS (mean age; 37.62 years; median EDSS score: 2.5) completed a series of self-rating scales at two time points: Nine months before the COVID-19 outbreak in May 2019 (baseline) and then again during the COVID-19 pandemic in May 2020 (study end). Self-rating questionnaires covered sociodemographic and disease-related information, insomnia, depressive symptoms, fatigue, and paresthesia. RESULTS Depressive symptoms increased over time with a significant p-value and medium effect size. Symptoms of insomnia increased over time (significant p-value, but small effect size), while no significant changes were observed in fatigue and paresthesia (very small effect sizes). The only predictor for insomnia during the COVID-19 pandemic was insomnia before the COVID-19 pandemic; the only predictor for depressive symptoms during the COVID-19 pandemic was insomnia before the COVID-19 pandemic. CONCLUSIONS Overall, the COVID-19 pandemic and its related social restrictions had significant effects on symptoms of depression and insomnia in this sample of Iranian women with MS, but had no effect on fatigue and paresthesia.
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Affiliation(s)
- Dena Sadeghi-Bahmani
- Department of Psychology, Stanford University, Stanford, CA, USA
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Youkhabeh Mohammadian
- Department of Clinical Psychology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Laleh Sadeghi Bahmani
- Department of Education and Psychology, Shahid Ashrafi Esfahani University, Esfahan, Iran
| | - Habibollah Khazaie
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nahid Piri
- Department of Clinical Psychology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - James J Gross
- Department of Psychology, Stanford University, Stanford, CA, USA
| | - Robert W Motl
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA
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Younis H, Shaheen N, Meshref M, Shaheen A, Elmasry M, Ramadan A, Nashwan AJ, Hamed M, El-Adawy AF. Restless legs syndrome in multiple sclerosis patients: Prevalence, impact, and association with disease-modifying therapies in a Saudi Arabian pilot study. Mult Scler Relat Disord 2023; 79:105014. [PMID: 37734185 DOI: 10.1016/j.msard.2023.105014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 09/05/2023] [Accepted: 09/14/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Restless legs syndrome (RLS) emerges as a notable sleep disorder characterized by distressing sensations within the lower extremities. Its prevalence appears to be higher among patients afflicted with multiple sclerosis (MS) compared to the general population. Despite this observation, the understanding of the intricacies of RLS and its repercussions within the context of MS patients in Saudi Arabia remains limited. METHODS Employing a cross-sectional design, a comprehensive investigation was undertaken at King Fahad Armed Forces Hospital in Jeddah, Saudi Arabia, spanning from November 2021 to March 2022. A cohort of 66 individuals diagnosed with MS was recruited and subjected to an assessment for RLS employing the revised diagnostic criteria outlined by the International Restless Legs Syndrome Study Group (IRLSSG). Furthermore, the Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, and Sleepiness Scale were employed to gage the extent of RLS's impact on sleep quality and daily functioning. RESULTS The prevalence of RLS amidst the MS cohort was determined to be 30.4%. An observable association was discerned between RLS presence and higher scores on the Expanded Disability Status Scale (p < 0.001), along with diminished sleep quality scores (p < 0.001) and elevated fatigue scores based on IRLSSG criteria (p < 0.001). Within the studied MS cases, 98.5 % exhibited the relapsing-remitting subtype. Further investigation demonstrated that patients treated with Fingolimod or Ocrevus presented normal IRLSSG scores, whereas those undergoing Rituximab treatment manifested an even distribution between normal and moderate scores. Correspondingly, patients receiving interferons showcased 72.2 % with normal scores and 27.8 % with mild scores. Notably, a statistically significant variance in IRLSSG scores was observed when contrasting Fingolimod and Aubagio treatments (P < 0.001). CONCLUSION The presence of RLS as a comorbidity in MS patients within the Saudi Arabian context emerges as a significant finding, exerting a discernible detrimental influence on both disability status and sleep quality. This study underscores the need for further investigations aimed at unraveling the intricate pathophysiological underpinnings, identification of risk factors, and exploration of therapeutic modalities for RLS in this population. Furthermore, additional research endeavors are warranted to elucidate the diverse impact of various disease-modifying therapies on clinical outcomes.
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Affiliation(s)
- Hossam Younis
- Neurology Specialist, Neuroscience Department, King Fahad Armed Forces, Jeddah, Saudi Arabia
| | - Nour Shaheen
- Alexandria Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Mostafa Meshref
- Assistant Lecturer of Neurology, Department of Neurology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ahmed Shaheen
- Alexandria Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Mohamed Elmasry
- Alexandria Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | | | | | - Mohamed Hamed
- Associate Professor of Neurology, Department of Neurology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ahmad F El-Adawy
- Associate Professor of Neurology, Department of Neurology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Aljarallah S, Alkhawajah N, Aldosari O, Alhuqbani M, Alqifari F, Alkhuwaitir B, Aldawood A, Alshenawy O, BaHammam AS. Restless leg syndrome in multiple sclerosis: a case-control study. Front Neurol 2023; 14:1194212. [PMID: 37404942 PMCID: PMC10315471 DOI: 10.3389/fneur.2023.1194212] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 06/06/2023] [Indexed: 07/06/2023] Open
Abstract
Objectives This study assessed the prevalence of restless leg syndrome (RLS) among patients with multiple sclerosis (pwMS) and the association between RLS and MS disease duration, sleep disturbance, and daytime fatigue. Methods In this cross-sectional study, we interviewed 123 patients via phone calls using preset questionnaires containing the International Restless Legs Syndrome Study Group (IRLSSG) diagnostic criteria, Pittsburgh Sleep Quality Index (PSQI), and Fatigue Severity Scale (FSS) diagnostic criteria validated in both Arabic and English. The prevalence of RLS in MS was compared to a group of healthy controls. Results The prevalence of RLS in pwMS, defined by meeting all four requirements included in the IRLSSG diagnostic criteria, was 30.3% compared to 8.3% in the control group. About 27.3% had mild RLS, 36.4% presented with moderate, and the remaining had severe or very severe symptoms. Patients with MS who experience RLS had a 2.8 times higher risk of fatigue compared to pwMS without RLS. pwMS with RLS had worse sleep quality, with a mean difference of 0.64 in the global PSQI score. Sleep disturbance and latency had the most significant impact on sleep quality. Conclusion The prevalence of RLS among MS patients was significantly higher compared to the control group. We recommend educating neurologists and general physicians to increase their awareness of the increasing prevalence of RLS and its association with fatigue and sleep disturbance in patients with MS.
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Affiliation(s)
- Salman Aljarallah
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Nuha Alkhawajah
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Omar Aldosari
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | - Faisal Alqifari
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | | | - Omar Alshenawy
- College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed S. BaHammam
- The University Sleep Disorders Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- National Plan for Science and Technology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Restless Legs Syndrome and Periodic Limb Movements of Sleep: From Neurophysiology to Clinical Practice. J Clin Neurophysiol 2023; 40:215-223. [PMID: 36872500 DOI: 10.1097/wnp.0000000000000934] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
Abstract
SUMMARY This article summarizes restless legs syndrome (RLS), periodic limb movements of sleep, and periodic limb movement disorder. RLS is a common sleep disorder with a prevalence of 5% to 15% in the general population. RLS can present in childhood, and incidence increases with age. RLS can be idiopathic or secondary to iron deficiency, chronic renal failure, peripheral neuropathy, and medications such as antidepressants (with higher rates for mirtazapine and venlafaxine, while bupropion may reduce symptoms at least in the short term), dopamine antagonists (neuroleptic antipsychotic agents and antinausea medications), and possibly antihistamines. Management includes pharmacologic agents (dopaminergic agents, alpha-2 delta calcium channel ligands, opioids, benzodiazepines) and nonpharmacologic therapies (iron supplementation, behavioral management). Periodic limb movements of sleep are an electrophysiologic finding commonly accompanying RLS. On the other hand, most individuals with periodic limb movements of sleep do not have RLS. The clinical significance of the movements has been argued. Periodic limb movement disorder is a distinct sleep disorder that arises in individuals without RLS and is a diagnosis of exclusion.
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Effect of exergaming in people with restless legs syndrome with multiple sclerosis: A single-blind randomized controlled trial. Mult Scler Relat Disord 2023; 70:104480. [PMID: 36603295 DOI: 10.1016/j.msard.2022.104480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/24/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Restless legs syndrome (RLS) is a sensory-motor disorder characterized by an uncomfortable sensation in the lower extremity, triggered by sitting and lying positions and release with motion. There is strong evidence that RLS prevalence is higher in persons with multiple sclerosis (MS, pwMS) than in the general population. Current literature has shown that exergaming as non-pharmacological therapy may be an effective method for symptoms such as balance, walking, fatigue, cognitive functions in pwMS, but the effects on RLS are not known. Therefore, the study's main aim is to investigate the effects of exergaming in pwMS with RLS. METHODS Thirty-one pwMS with RLS and 34 pwMS without RLS were randomly divided as exergaming group and control group. The outcome measures were International RLS Study Group Rating Scale, Modified Fatigue Impact Scale, MS Walking Scale, Timed 25-Foot Walk Test, Hospital Anxiety and Depression Scale, Godin-Shephard Leisure-Time Physical Activity Questionnaire, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, 6 min Walk Test, Timed and Up Go, MS International Quality of Life questionnaire, MS-Related Symptom Checklist. RESULTS 26 pwMS with RLS (11 exergaming group, 15 control group) and 27 pwMS without RLS (12 exergaming group, 15 control group) were included in 8-week post-treatment analyses. After an 8-week long-term follow-up, 16 pwMS with and without RLS completed the protocol. The RLS severity (p = 0.004), anxiety level (p = 0.024), sleep quality (0.005), walking (0.004), and balance functions (0.041) were improved in pwMS with RLS exergaming group, while RLS severity increased in control group (p = 0.004). At 8-week follow-up, the effect of exergaming on RLS severity, quality of life, sleep quality, and walking capacity was preserved. There was significant improvement in gait and balance functions in pwMS without RLS exergaming group, there was no significant differences control group. In 8-week follow-up, improvement obtained in pwMS without RLS exergaming group was not preserved. CONCLUSIONS This study suggests that exergaming training could be an effective method for managing RLS severity, anxiety, sleep quality, gait, balance, and quality of life in pwMS with RLS.
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Zali A, Motavaf M, Safari S, Ebrahimi N, Ghajarzadeh M, Khoshnood RJ, Mirmosayyeb O. The prevalence of restless legs syndrome (RLS) in patients with multiple sclerosis (MS): a systematic review and meta-analysis-an update. Neurol Sci 2023; 44:67-82. [PMID: 36058956 DOI: 10.1007/s10072-022-06364-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/20/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION The prevalence of restless legs syndrome (RLS) is reported to vary in patients with multiple sclerosis (MS) in studies which are conducted in different populations. The goal of this systematic review and meta-analysis is to update the prevalence of RLS in MS cases. METHODS We searched PubMed, Scopus, EMBASE, CINAHL, Web of Science, Google Scholar, and gray literature including references from identified studies and conference abstracts which were published up to June 2021. Data on the total number of participants, first author, country, disease duration, number of controls, mean patient age, male and female numbers, mean EDSS, and number of cases and/or controls with RLS were extracted from the included studies. RESULTS The literature search revealed 855 articles; after deleting duplicates, 530 remained. For the meta-analysis, 75 studies were included (Fig. 1). In six articles, the authors did not differentiate between CIS and MS cases when reporting RLS cases. In total, 15,411 MS/CIS patients were evaluated and 4309 had RLS. The pooled prevalence of RLS was 28% (95% CI: 24-33%). The pooled prevalence of RLS in men was 22% (95% CI: 17-26%), and the pooled prevalence of RLS in women was 30% (95% CI: 25-35%). The pooled prevalence of RLS in controls was 8% (95% CI: 6-10%). CONCLUSION The results of this systematic review and meta-analysis show that the pooled prevalence of RLS is 28% in MS cases and 8%. The pooled prevalence is higher in women than men (30% vs 22%).
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Affiliation(s)
- Alireza Zali
- Functional Neurosurgery Research Center, Shohada Tajrish Neurosurgical Comprehensive Center of Excellence, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Qods Sq., Building no 1, 4th floor, Tajrish, Tehran, Iran
| | - Mahsa Motavaf
- Functional Neurosurgery Research Center, Shohada Tajrish Neurosurgical Comprehensive Center of Excellence, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Qods Sq., Building no 1, 4th floor, Tajrish, Tehran, Iran
| | - Saeid Safari
- Functional Neurosurgery Research Center, Shohada Tajrish Neurosurgical Comprehensive Center of Excellence, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Qods Sq., Building no 1, 4th floor, Tajrish, Tehran, Iran.
| | - Narges Ebrahimi
- School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahsa Ghajarzadeh
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran.,Universal Council of Epidemiology (UCE), Universal Scientific Education and Research Network (USERN), Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Jalili Khoshnood
- Functional Neurosurgery Research Center, Shohada Tajrish Neurosurgical Comprehensive Center of Excellence, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Qods Sq., Building no 1, 4th floor, Tajrish, Tehran, Iran
| | - Omid Mirmosayyeb
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Cederberg KLJ, Jeng B, Sasaki JE, Schuetz ML, Mathison BG, Motl RW. Does physical activity timing differentially correlate with symptoms of restless legs syndrome in adults with multiple sclerosis? Sleep Med 2022; 100:120-127. [PMID: 36049405 DOI: 10.1016/j.sleep.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 07/11/2022] [Accepted: 08/02/2022] [Indexed: 01/12/2023]
Abstract
OBJECTIVE/BACKGROUND The present study examined the associations among physical activity during different times of the day(i.e., morning, midday,evening) and days of the week(i.e., weekdays, weekend days) with restless legs syndrome(RLS) severity and sleep quality in adults with multiple sclerosis(MS). PATIENTS/METHODS Participants(N = 39) completed the International Restless Legs Syndrome Study Group Scale and the Pittsburgh Sleep Quality Index as measures of RLS severity and global sleep quality, respectively, and wore an ActiGraph GT3X + on the non-dominant hip for seven days for measuring physical activity(i.e., light physical activity[LPA], moderate-to-vigorous physical activity[MVPA], and steps). RESULTS There was a significant effect of time of day wherein participants had more midday activity compared with morning or evening for LPA, MVPA, and steps; there was no effect of day of the week. Spearman's rho correlations across the week indicated higher evening LPA, evening steps, and overall daily steps (ρ = -0.42,ρ = -0.51,ρ = -0.40,respectively) were associated with lower RLS severity. Similar associations were demonstrated for weekdays(ρ = -0.39,ρ = -0.50,ρ = -0.41,respectively) and weekend days(ρ = -0.44,ρ = -0.51,ρ = -0.39,respectively). Higher evening MVPA on weekend days(ρ = -0.42) was associated with lower RLS severity. Higher morning and overall daily LPA(ρ = 0.34,ρ = 0.33,respecitvely) were associated with worse sleep quality. Similar associations were demonstrated on weekdays(ρ = 0.33,ρ = 0.37,respectively) and more evening MVPA(ρ = 0.32) was associated with worse sleep quality. On weekend days, more morning MVPA(ρ = 0.42) was associated with worse sleep quality. CONCLUSIONS Our results suggest that undertaking physical activity, particularly LPA and steps, in evenings may be important for managing symptoms of RLS without worsening sleep quality.
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Affiliation(s)
- Katie L J Cederberg
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA; Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Brenda Jeng
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeffer E Sasaki
- Department of Sport Sciences, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Morgan L Schuetz
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Brianna G Mathison
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert W Motl
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Kinesiology and Nutrition, University of Illinois Chicago, Chicago, IL, USA
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Cederberg KLJ, Schuetz ML, Mathison B, Motl RW. Restless legs syndrome severity associated with reduced physical function in adults with multiple sclerosis. Gait Posture 2022; 97:56-61. [PMID: 35882097 DOI: 10.1016/j.gaitpost.2022.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 06/23/2022] [Accepted: 06/26/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Restless legs syndrome (RLS) is a sleep disorder that occurs in approximately 26 % of adults with multiple sclerosis (MS) and may be associated with reduced physical function. RESEARCH QUESTION The present study examined the relationship between RLS symptomology (i.e., overall severity, frequency, and occurrence) and physical function outcomes in adults with MS who had RLS. METHODS Participants (N = 22) with MS who had RLS came into the laboratory for a single session wherein a rater performed a brief neurological examination for scoring the Expanded Disability Status Scale (EDSS) and completed a demographics questionnaire, the International Restless Legs Syndrome Study Group Scale (IRLS), and the Restless Legs Syndrome Scale-6 (RLS-6) followed by the Short Physical Performance Battery (SPPB) and the Six-minute Walk Test (6 MW). RESULTS Bivariate Spearman's rho correlation analyses indicated total IRLS had a strong, negative association with total distance traveled during the 6 MW (ρ = -0.50) and a moderate association with SPPB scores (ρ = -0.43), but not EDSS scores (ρ = 0.28). RLS severity during the day while active had strong, negative associations with total distance traveled during the 6 MW (ρ = -0.61) and SPPB scores (ρ = -0.52), but not EDSS scores (ρ = 0.13). SIGNIFICANCE We observed associations between worse overall RLS severity and RLS severity during the day while active with reduced performance during the 6 MW and lower SPPB scores. The management of RLS may offer an opportunity for mitigating reductions in physical function in adults with MS who have RLS.
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Affiliation(s)
- Katie L J Cederberg
- Department of Physical Therapy, University of Alabama at Birmingham, 1720 Second Avenue South, AL, USA.
| | - Morgan L Schuetz
- Department of Physical Therapy, University of Alabama at Birmingham, 1720 Second Avenue South, AL, USA
| | - Brianna Mathison
- Department of Physical Therapy, University of Alabama at Birmingham, 1720 Second Avenue South, AL, USA
| | - Robert W Motl
- Department of Kinesiology and Nutrition University of Illinois Chicago.
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Ning P, Mu X, Yang X, Li T, Xu Y. Prevalence of restless legs syndrome in people with diabetes mellitus: A pooling analysis of observational studies. EClinicalMedicine 2022; 46:101357. [PMID: 35345532 PMCID: PMC8956955 DOI: 10.1016/j.eclinm.2022.101357] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 02/23/2022] [Accepted: 03/03/2022] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is associated with different clinical complications. The aim of this study was to explore the prevalence of RLS in people with diabetes mellitus and compare the risk of restless leg syndrome (RLS) between diabetic and non-diabetic population. METHODS We searched for studies of RLS prevalence in DM through PubMed, Embase, and Web of Science. Two authors independently completed the literature screening, data extraction, and bias risk assessment of eligible studies. All observational studies that assessed the prevalence or risk of RLS in DM were included, where the diagnosis of RLS was based on the International Restless Legs Syndrome Study Group (IRLSSG). Percentages, odds ratio (OR) with 95% confidence intervals (CI) were used to assess pooled estimates of RLS prevalence and risk based on random-effects models. Newcastle-Ottawa-scale (NOS) or a modified NOS were used to evaluate the quality of studies. FINDINGS A total of 42 studies, including 835,986 participants, met the eligibility criteria for the meta-analysis. Among them, 30 studies were included in meta-analysis to analyze the prevalence of RLS. A second meta-analysis was conducted using 31 studies to determine RLS risk between diabetes and non-diabetes. The results indicate that between 25% (95% confidence interval 21%-29%) of people with diabetes showed signs of RLS, and people with diabetes had an increased risk of developing RLS compare to people without diabetes (OR 1.98, 95%CI 1.66- 2.34, p < 0.001). However, the available evidence was limited due to potential risk of bias and variability between studies (I2 >75%), all of observational design. INTERPRETATION Our study suggests that the prevalence and risk of RLS might be higher in DM patients than in non-diabetes population. However, given limitations in the analysis and study design, the findings need to be corroborated in future studies. FUNDING This work was supported by the Basic Conditions Platform Construction Project of Sichuan Science and Technology Department (2019JDPT0015), and the "1・3・5 project for disciplines of excellence, West China Hospital, Sichuan University" (ZYJC18003).
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Affiliation(s)
- Pingping Ning
- Department of Neurology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, Sichuan 610041, PR China
| | - Xin Mu
- Department of Neurology, Chengdu First People's Hospital, 18 Wanxiang North Road, Chengdu, Sichuan 610041, PR China
| | - Xinglong Yang
- Department of Geriatric Neurology, First Affiliated Hospital of Kunming Medical University, 295 Xi Change Road, Kunming, Yunnan 650032, PR China
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an 710032, PR China
- Corresponding authors.
| | - Yanming Xu
- Department of Neurology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, Sichuan 610041, PR China
- Corresponding authors.
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Cederberg KL, Mathison BG, Schuetz ML, Motl RW. Discrepancies between self-reported and device-measured sleep parameters in adults with multiple sclerosis. J Clin Sleep Med 2022; 18:415-421. [PMID: 34338630 PMCID: PMC8804995 DOI: 10.5664/jcsm.9586] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
STUDY OBJECTIVES Sleep problems are a common consequence of multiple sclerosis; however, there is limited evidence regarding the agreement between device-measured and self-reported sleep parameters in adults with multiple sclerosis. The present study examined the agreement between self-reported and device-measured parameters of sleep quality in a sample of adults with multiple sclerosis. METHODS Participants (n = 49) completed a 7-day sleep diary and wore a wrist-worn ActiGraph GT3×+ (ActiGraph Corp., Pensecola, FL) for seven consecutive nights to quantify self-reported and device-measured sleep parameters, respectively. RESULTS There was a significant discrepancy between self-reported and device-measured parameters of total time in bed (mean difference = 19.8 [51.3] min), sleep onset latency (mean difference = 22.2 [19.5] min), and frequency of awakenings during the night (mean difference = 12.8 [6.8]). Intraclass correlation estimates indicated poor agreement between methods on most parameters, except for total time in bed (intraclass correlation = 0.80). Bland-Altman plots suggested that total time in bed and total sleep time had acceptable levels of agreement and linear regression analyses indicated that sleep onset latency (F = 113.91, B = -1.34, P < .001), number of awakenings (F = 543.34, B = 1.85, P < .001), and sleep efficiency (F = 18.39, B = -0.77, P < .001) had significant proportional bias. CONCLUSIONS Our results draw attention to the discrepancies between sleep parameter measurements and highlight the importance of including both self-report and device-measured outcomes for a complete and accurate representation of sleep in adults with multiple sclerosis. CITATION Cederberg KLJ, Mathison BG, Schuetz ML, Motl RW. Discrepancies between self-reported and device-measured sleep parameters in adults with multiple sclerosis. J Clin Sleep Med. 2022;18(2):415-421.
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Affiliation(s)
- Katie L.J. Cederberg
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California,Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, Alabama,Address correspondence to: Katie L.J. Cederberg, PhD;
| | - Brianna G. Mathison
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, Alabama
| | - Morgan L. Schuetz
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, Alabama
| | - Robert W. Motl
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, Alabama
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12
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Cederberg KL, Mathison B, Schuetz ML, Motl RW. Restless Legs Syndrome Severity and Cognitive Function in Adults with Multiple Sclerosis: An Exploratory Pilot Study. Int J MS Care 2021; 24:154-161. [DOI: 10.7224/1537-2073.2020-120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Abstract
Background:
Restless legs syndrome (RLS) is a sleep disorder present in as many as 26% of persons with multiple sclerosis (MS) and can be associated with cognitive function. The present study examined the relationships between RLS symptoms (severity, frequency, occurrence) and cognitive function in adults with MS who have RLS.
Methods:
Twenty-two participants attended one laboratory session and completed the International Restless Legs Syndrome Study Group Rating Scale (IRLS), the Restless Legs Syndrome-6 Scale (RLS-6), and then the Brief International Cognitive Assessment for Multiple Sclerosis battery consisting of the Symbol Digit Modalities Test; California Verbal Learning Test, Second Edition; and Brief Visuospatial Memory Test–Revised.
Results:
Nonparametric bivariate correlations indicated that worse IRLS total severity was associated with slower processing speed (ρ = −0.42), worse verbal memory (ρ = −0.63), and worse visual memory (ρ = −0.61); worse RLS severity at falling asleep was associated with worse verbal memory (ρ = −0.45) and worse visual memory (ρ = −0.55); and worse RLS severity during the day while active was associated with slower processing speed (ρ = −0.58), worse verbal memory (ρ = −0.52), and worse visual memory (ρ = −0.60).
Conclusions:
These results suggest that those with more severe RLS, including worse symptoms at falling asleep and during the day while active, might experience worse cognitive function, particularly processing speed and memory. Future research should evaluate whether treatment of RLS symptoms can offer new opportunities for managing cognitive dysfunction in adults with MS.
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Affiliation(s)
- Katie L.J. Cederberg
- From the Department of Physical Therapy, University of Alabama at Birmingham, AL, USA (KLJC [now at Stanford University], BM, MLS, RWM)
| | - Brianna Mathison
- From the Department of Physical Therapy, University of Alabama at Birmingham, AL, USA (KLJC [now at Stanford University], BM, MLS, RWM)
| | - Morgan L. Schuetz
- From the Department of Physical Therapy, University of Alabama at Birmingham, AL, USA (KLJC [now at Stanford University], BM, MLS, RWM)
| | - Robert W. Motl
- From the Department of Physical Therapy, University of Alabama at Birmingham, AL, USA (KLJC [now at Stanford University], BM, MLS, RWM)
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13
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Ozdogar AT, Kalron A. Restless legs syndrome in people with multiple sclerosis: An updated systematic review and meta-analyses. Mult Scler Relat Disord 2021; 56:103275. [PMID: 34592631 DOI: 10.1016/j.msard.2021.103275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/10/2021] [Accepted: 09/19/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Restless legs syndrome (RLS) is a sensory-motor disorder characterized by an uncomfortable sensation felt in the lower extremity. The aim of this systematic review and meta-analyses was (i) to provide updated information on the prevalence and clinical characteristics of RLS amongst people with multiple sclerosis (PwMS) and (ii) clarify RLS-related factors in PwMS. METHODS MEDLINE (PubMed), Scopus, and EMBASE were searched from their inception through April 2021 for the following keywords: 'restless legs syndrome' or 'RLS' and 'multiple sclerosis' or 'MS'. For the analysis of RLS prevalence, we calculated the percentage of RLS sufferers amongst the PwMS and people without MS. The prevalence of RLS was pooled separately for PwMS and healthy controls, regardless of the heterogeneity between studies. The odds ratios (ORs) and 95% CIs were extracted from the data in order to analyze the association between MS and RLS. RESULTS Nineteen studies were included in the review (9 case-controlled and 10 cross-sectional).The mean prevalence of RLS in the MS population was 27.5%, ranging from 13.2% to 65.1%, higher than the healthy controls. Based on the case control studies, the pooled RLS prevalence was much higher in PwMS than in healthy controls (OR 4.535, 95% CI 3.043-6.759, p<0.001). The majority of studies found no significant relationship between the presence of RLS in PwMS with disability, disease duration, type of MS, age, or gender. CONCLUSIONS Our updated systematic review strengthens the evidence of the increased risk of RLS amongst PwMS. Nevertheless, significant data reporting on characteristics of the MS disease, which increases the risk of suffering from RLS, is still lacking.
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Affiliation(s)
- Asiye Tuba Ozdogar
- Graduate School of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Alon Kalron
- Department of Physical Therapy, School of Health Professions, Sackler Faculty of Medicine Tel-Aviv University, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel; Multiple Sclerosis Center, Sheba Medical Center, Tel Hashomer, Israel.
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14
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Cederberg KLJ, Walters AS, Amara AW, Braley TJ, Schuetz ML, Mathison BG, Motl RW. Validity and reliability of the suggested immobilization test for measurement of restless legs syndrome severity in adults with multiple sclerosis. Sleep Med 2021; 84:343-351. [PMID: 34242924 DOI: 10.1016/j.sleep.2021.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/02/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE/BACKGROUND Adults with multiple sclerosis (MS) often present with conditions that mimic restless legs syndrome (RLS), thereby adding complexity into the assessment of RLS severity. The current gold-standard measures of RLS severity rely on a fixed seven-day time frame, which limits the ability of these measures for studying acute changes in RLS severity. The present study examined if subjective and objective scores from the suggested immobilization test (SIT) provide a valid and reliable acute measure of RLS severity in persons with MS. PATIENTS/METHODS Participants with MS and RLS (n = 20) and MS without RLS (n = 20) were matched by age, gender, and disability. All participants completed validated questionnaires for RLS severity followed by the SIT, conducted at 18:00 (±15 min) on the same day of the week for two consecutive weeks. Participants wore accelerometer devices for seven nights to capture periodic limb movements (PLMs) during the night. RESULTS Self-reported RLS severity during the SIT had excellent construct validity and convergent validity, but moderate test-retest reliability. Device-measured PLMs, while not themselves a direct measure of RLS severity, were significantly associated with PLMs during the night and had excellent test-retest reliability during the SIT in adults with MS. CONCLUSIONS Our results suggest that the SIT represents a valid acute measure for capturing self-reported sensory aspects of RLS severity and should be considered in future research and clinical practice as a standardized acute measure of subjective RLS severity in adults with MS who present with RLS.
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Affiliation(s)
- Katie L J Cederberg
- Department of Psychiatry and Behavioral Sleep Medicine, Stanford University, Stanford, CA, USA.
| | - Arthur S Walters
- Department of Neurology, Vanderbilt University, Nashville, TN, USA
| | - Amy W Amara
- Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Tiffany J Braley
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Morgan L Schuetz
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Brianna G Mathison
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert W Motl
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
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15
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Monschein T, Schestak C, Schillerwein-Kral C, Leutmezer F, Berger T, Bsteh G, Seidel S. Restless Legs Syndrome in Multiple Sclerosis: Risk factors and effect on sleep quality - a case-control study. Mult Scler Relat Disord 2021; 51:102916. [PMID: 33799283 DOI: 10.1016/j.msard.2021.102916] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/03/2021] [Accepted: 03/16/2021] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Previous studies suggested an association between MS and Restless Legs Syndrome (RLS). Data on the prevalence of RLS in Austrian MS patients and on the influence of disease-modifying therapies (DMT) on RLS are lacking. OBJECTIVE To investigate (1) the prevalence of RLS in Austria compared to control persons (CP), (2) risk factors for RLS in MS, and (3) influence of DMTs on RLS prevalence and/or severity. METHODS Adult MS patients and CP were screened for RLS by face-to-face interviews, including questionnaires for RLS severity, sleep quality and daytime sleepiness. RESULTS 23.9% of MS patients (n=117) had RLS compared to 3.4% (p<0.001) of CP (n=119). The MS+RLS group (n=28) had a higher rate of sleep impairment (78.6% vs 21.3%, p<0.001) and excessive daytime sleepiness (32.1% vs 15.7%, p=0.045) compared to the MS-RLS group. Multivariate regression analysis revealed higher Expanded Disability Status Scale and spinal lesions in MRI as risk factors for RLS in MS, while DMTs had no impact on RLS. CONCLUSION Roughly a quarter of MS patients suffers from RLS, significantly impacting quality of life by poor sleep quality and excessive daytime sleepiness. RLS risk increases with physical disability and spinal lesions but is independent of DMT.
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Affiliation(s)
- Tobias Monschein
- Department of Neurology, Medical University of Vienna, Vienna, Austria.
| | | | | | - Fritz Leutmezer
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Thomas Berger
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Gabriel Bsteh
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Stefan Seidel
- Department of Neurology, Medical University of Vienna, Vienna, Austria
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16
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Feasibility and efficacy of a physical activity intervention for managing restless legs syndrome in multiple sclerosis: Results of a pilot randomized controlled trial. Mult Scler Relat Disord 2021; 50:102836. [PMID: 33618120 DOI: 10.1016/j.msard.2021.102836] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/26/2021] [Accepted: 02/06/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND This pilot randomized controlled trial examined the feasibility and efficacy of a physical activity behavior change intervention for improving restless legs syndrome (RLS) severity and secondary sleep outcomes among a sample of adults with multiple sclerosis (MS). METHODS Participants with MS(N=15) were randomly assigned into intervention(n=8) or waitlist control(n=7) conditions. The physical activity intervention was delivered over a 16-week period and outcomes were assessed at baseline and immediately following the 16-week period in both conditions. RESULTS There was a significant, positive effect of the intervention on overall RLS severity (p=.01;ηρ2=.43), severity during the night(p=.03,ηρ2=.35), severity during the day while resting(p=.01,ηρ2=.44), and severity during the day while active(p<.01,ηρ2=.61), and non-significant improvements in RLS severity while falling asleep (p=.33,ηρ2=.09). There were significant positive effects on sleep satisfaction(p<.01,ηρ2=.49) and non-significant improvements in self-reported global sleep quality(p=.35,ηρ2=.08). There was a significant intervention effect on self-reported time in bed(p=.03,ηρ2=.37) and total sleep time(p=.03,ηρ2=.36), and non-significant improvements in self-reported sleep latency (p=.08,ηρ2=.25), sleep efficiency(p=.27,ηρ2=.11), and daytime sleepiness (p=.52,ηρ2=.04;p=.35,ηρ2=.08;p=.51,ηρ2=.04). There was no significant effect of the intervention on device-measured sleep quality. CONCLUSIONS We provide preliminary evidence for the feasibility and efficacy of a physical activity intervention for reducing RLS severity and potentially improving self-reported sleep outcomes in adults with MS. CLINICALTRIALS. GOV IDENTIFICATION NUMBER NCT04061681.
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17
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Seferoğlu M, Sivaci AÖ, Tunç A. Restless legs syndrome/Willis-Ekbom disease in multiple sclerosis: a contributing factor for anxiety, disability, sleep disorder, and quality of life. ARQUIVOS DE NEURO-PSIQUIATRIA 2020; 78:708-712. [PMID: 33263605 DOI: 10.1590/0004-282x20200084] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 04/28/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Restless legs syndrome (RLS) is one of the most common and burdensome sleep disorders in the course of multiple sclerosis (MS). OBJECTIVE To evaluate common MS-related symptoms and consequences between groups with and without RLS and further assess the association of quality of life determinants with RLS symptom severity. METHODS According to their RLS status, 46 relapsing-remitting MS patients were divided into MS-RLS+ (n=19) and MS-RLS- groups (n=27). Specific questionnaires were administered to assess the patients' health-related quality of life (HRQoL), fatigue levels, sleep quality, daily sleepiness, anxiety, and depression symptoms. Functional capacity was examined using the Expanded Disability Status Scale (EDSS). RESULTS The prevalence of RLS was 41.3%. Compared to the MS-RLS- group, those with RLS had higher EDSS scores, more cranial and spinal lesions, longer disease duration, and were older. In the MS-RLS+ group, symptom severity scores were positively correlated with higher anxiety and poorer sleep quality. The symptom severity score was negatively correlated with mental HRQoL and pain scores. CONCLUSION In conclusion, the findings of the current study indicate the negative impact of RLS on functional capacity, anxiety, sleep quality, and mental HRQoL of MS patients. Further studies using more accurate diagnostic strategies for identifying RLS and other sleep disorders are necessary to clarify the association of MS with RLS and explore relevant clinical implications.
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Affiliation(s)
- Meral Seferoğlu
- Bursa Yüksek İhtisas Training and Research Hospital, Clinic of Neurology, Bursa, Turkey
| | - Ali Özhan Sivaci
- Bursa Yüksek İhtisas Training and Research Hospital, Clinic of Neurology, Bursa, Turkey
| | - Abdulkadir Tunç
- Sakarya University, Sakarya Training and Research Hospital, Clinic of Neurology, Sakarya, Turkey
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18
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Cederberg KLJ, Jeng B, Sasaki JE, Motl RW. Restless legs syndrome, sleep quality, and perceived cognitive impairment in adults with multiple sclerosis. Mult Scler Relat Disord 2020; 43:102176. [PMID: 32498034 PMCID: PMC7363523 DOI: 10.1016/j.msard.2020.102176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/27/2020] [Accepted: 05/01/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Restless Legs Syndrome (RLS) is a prominent sleep disorder that often worsens sleep quality and perhaps cognitive function in adults with multiple sclerosis (MS). The present study examined the relationships among RLS prevalence and severity, sleep quality, and perceived cognitive impairment in adults with MS. METHODS Participants (N=275) completed the Cambridge-Hopkins Restless Legs Syndrome Questionnaire, the International Restless Legs Syndrome Study Group (IRLS) Scale, the Multiple Sclerosis Neuropsychological Screening Questionnaire (MSNQ), the Pittsburgh Sleep Quality Index (PSQI), the Patient Determined Disease Steps (PDDS), and a demographic and clinical characteristics questionnaire. RESULTS Persons with MS who had RLS (i.e., MS+RLS; n=74) reported significantly worse perceived cognitive impairment compared with those who did not have RLS (n=201; p=0.015). Bivariate correlation analyses within the MS+RLS group indicated that greater RLS severity was significantly associated with more severe perceived cognitive impairment (r=0.274) and sleep quality (r=0.380), and worse perceived cognitive impairment was significantly associated with worse sleep quality (r=0.438). Linear, step-wise regression analyses indicated that RLS severity significantly predicted perceived cognitive impairment (β=0.274), but the inclusion of sleep quality (β=0.391) accounted for the relationship between RLS severity and perceived cognitive impairment (β=0.126). CONCLUSIONS Our results suggest that sleep impairment may be an intermediary factor in the association between RLS severity and cognitive impairment in persons with MS who present with RLS. The diagnosis and treatment of RLS symptoms and other effectors of sleep quality could improve neuropsychological consequences of MS.
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Affiliation(s)
- Katie L J Cederberg
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL USA.
| | - Brenda Jeng
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL USA
| | - Jeffer E Sasaki
- Department of Sport Sciences, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Robert W Motl
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL USA
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19
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Hauer L, Perneczky J, Sellner J. A global view of comorbidity in multiple sclerosis: a systematic review with a focus on regional differences, methodology, and clinical implications. J Neurol 2020; 268:4066-4077. [PMID: 32719975 PMCID: PMC8505322 DOI: 10.1007/s00415-020-10107-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/18/2020] [Accepted: 07/21/2020] [Indexed: 12/24/2022]
Abstract
Multiple sclerosis (MS) is a chronic autoimmune disorder of the central nervous system which is associated with numerous comorbidities. These include cardiovascular disease, psychiatric and neurologic disturbances, restless leg syndrome, migraine, cancer, autoimmune diseases, and metabolic disorders. Comorbid disease is an important consideration for clinicians treating patients with MS; early presentation of comorbidities can obscure or delay MS diagnosis, as well as significantly impacting the disease course. Improved understanding of comorbidities and their emergence in MS populations is important for improving the quality of life and optimizing treatment for patients. Therefore, we evaluated published studies reporting epidemiologic data on comorbidities and their associated impact on disease progression in patients with MS (PwMS). The prevalence of neurologic, cardiovascular, metabolic, and autoimmune comorbidities was elevated in PwMS in general, and furthermore, this adversely affected a broad range of outcomes. Compared with PwMS, cancer rates in people without MS or the general population were lower, which should prompt further studies into the mechanisms of both diseases. Studies were under-represented in many regions owing to the latitudinal gradient of MS and possible underfunding of studies.
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Affiliation(s)
- Larissa Hauer
- Department of Psychiatry, Psychotherapy and Psychosomatic Medicine, Christian Doppler Medical Center, Paracelsus Medical University, Salzburg, Austria
| | - Julian Perneczky
- Department of Neurology, Landesklinikum Mistelbach-Gänserndorf, Liechtensteinstrase 67, 2130, Mistelbach, Austria
| | - Johann Sellner
- Department of Neurology, Landesklinikum Mistelbach-Gänserndorf, Liechtensteinstrase 67, 2130, Mistelbach, Austria. .,Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. .,Department of Neurology, Christian Doppler Medical Center, Paracelsus Medical University, Salzburg, Austria.
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20
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Cederberg KLJ, Jeng B, Sasaki JE, Braley TJ, Walters AS, Motl RW. Physical activity, sedentary behavior, and restless legs syndrome in persons with multiple sclerosis. J Neurol Sci 2019; 407:116531. [PMID: 31654833 DOI: 10.1016/j.jns.2019.116531] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/20/2019] [Accepted: 10/10/2019] [Indexed: 12/11/2022]
Abstract
The present study examined the relationships among parameters (i.e., volume and pattern) of physical activity and sedentary behavior with the presence and severity of restless legs syndrome(RLS) in adults with multiple sclerosis(MS). Participants with MS (N = 253) wore an accelerometer for a 7-day period and completed the Cambridge-Hopkins Restless Legs Syndrome Questionnaire, the International Restless Legs Syndrome Study Group Scale (IRLS), and the Patient Determined Disease Steps scale. Sixty-six (26%) persons with MS had RLS (MS + RLS). There were no differences between the MS + RLS and MS group for parameters of physical activity or sedentary behavior. Among participants with IRLS scores in the mild range (n = 26), more time spent in light physical activity (rs = 0.39), fewer sedentary bouts per day (rs = 0.55), less time in sedentary bouts per day (rs = 0.51), and fewer breaks in sedentary time per day (rs = 0.57) were associated with lower RLS severity. This study represents the first step toward recognizing a relationship between physical activity, patterns of sedentary behavior, and RLS severity in MS and these results suggest that light physical activity and the pattern of sedentary behavior may be important targets for prospective behavioral interventions that target the management of RLS in persons with MS who have mild RLS severity.
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Affiliation(s)
- Katie L J Cederberg
- Department of Physical Therapy, University of Alabama at Birmingham, AL, USA(1).
| | - Brenda Jeng
- Department of Physical Therapy, University of Alabama at Birmingham, AL, USA(1)
| | - Jeffer E Sasaki
- Department of Sport Sciences, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Tiffany J Braley
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Arthur S Walters
- Department of Neurology, Vanderbilt University, Nashville, TN, USA
| | - Robert W Motl
- Department of Physical Therapy, University of Alabama at Birmingham, AL, USA(1)
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21
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Zielinski MR, Systrom DM, Rose NR. Fatigue, Sleep, and Autoimmune and Related Disorders. Front Immunol 2019; 10:1827. [PMID: 31447842 PMCID: PMC6691096 DOI: 10.3389/fimmu.2019.01827] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/18/2019] [Indexed: 12/13/2022] Open
Abstract
Profound and debilitating fatigue is the most common complaint reported among individuals with autoimmune disease, such as systemic lupus erythematosus, multiple sclerosis, type 1 diabetes, celiac disease, chronic fatigue syndrome, and rheumatoid arthritis. Fatigue is multi-faceted and broadly defined, which makes understanding the cause of its manifestations especially difficult in conditions with diverse pathology including autoimmune diseases. In general, fatigue is defined by debilitating periods of exhaustion that interfere with normal activities. The severity and duration of fatigue episodes vary, but fatigue can cause difficulty for even simple tasks like climbing stairs or crossing the room. The exact mechanisms of fatigue are not well-understood, perhaps due to its broad definition. Nevertheless, physiological processes known to play a role in fatigue include oxygen/nutrient supply, metabolism, mood, motivation, and sleepiness-all which are affected by inflammation. Additionally, an important contributing element to fatigue is the central nervous system-a region impacted either directly or indirectly in numerous autoimmune and related disorders. This review describes how inflammation and the central nervous system contribute to fatigue and suggests potential mechanisms involved in fatigue that are likely exhibited in autoimmune and related diseases.
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Affiliation(s)
- Mark R Zielinski
- Veterans Affairs Boston Healthcare System, Boston, MA, United States.,Department of Psychiatry, Harvard Medical School, Boston, MA, United States
| | - David M Systrom
- Department of Medicine, Harvard Medical School, Boston, MA, United States.,Department of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Noel R Rose
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
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22
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Barzegar M, Sadeghi Bahmani D, Nehzat N, Kiani M, Hashemi N, Mirmosayyeb O, Brand S, Shaygannejad V. Comparison of sleep complaints and quality of life between patients with neuromyelitis optica spectrum disorder (NMOSD) and healthy controls. Mult Scler Relat Disord 2019; 32:81-87. [DOI: 10.1016/j.msard.2019.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/10/2019] [Indexed: 12/24/2022]
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