Validity and reliability of the Finnish version of the Multiple Sclerosis Impact Scale-29

Weak grip strength among persons with multiple sclerosis having minimal disability is not related to agility or integrity of the corticospinal tract

INTRODUCTION

Mobility impairment is common in multiple sclerosis (MS); however, agility has received less attention. Agility requires strength and neuromuscular coordination to elicit controlled propulsive rapid whole-body movement. Grip strength is a common method to assess whole body force production, but also reflects neuromuscular integrity and global brain health. Impaired agility may be linked to loss of neuromuscular integrity (reflected by grip strength or corticospinal excitability).

OBJECTIVES

We aimed to determine whether grip strength would be associated with agility and transcranial magnetic stimulation (TMS)-based indices of corticospinal excitability and inhibition in persons with MS having low disability. We hypothesized that low grip strength would predict impaired agility and reflect low corticospinal excitability.

METHODS

We recruited 34 persons with relapsing MS (27 females; median [range] age 45.5 [21.0-65.0] years) and mild disability (median [range] Expanded Disability Status Scale 2.0 [0-3.0]), as well as a convenience sample of age- and sex-matched apparently healthy controls. Agility was tested by measuring hop length during bipedal hopping on an instrumented walkway. Grip strength was measured using a calibrated dynamometer. Corticospinal excitability and inhibition were examined using TMS-based motor evoked potential (MEP) and corticospinal silent period (CSP) recruitment curves, respectively.

RESULTS

MS participants had significantly lower grip strength than controls independent of sex. Females with and without MS had weaker grip strength than males. There were no statistically significant sex or group differences in agility. After controlling for sex, weaker grip strength was associated with shorter hop length in controls only (r = 0.645, p < .05). Grip strength did not significantly predict agility in persons with MS, nor was grip strength predicted by corticospinal excitability or inhibition.

CONCLUSIONS

In persons with MS having low disability, grip strength (normalized to body mass) was reduced despite having intact agility and walking performance. Grip strength was not associated with corticospinal excitability or inhibition, suggesting peripheral neuromuscular function, low physical activity or fitness, or other psychosocial factors may be related to weakness. Low grip strength is a putative indicator of early neuromuscular aging in persons with MS having mild disability and normal mobility.

Cross-cultural adaptation and validation of the Arabic version of the Multiple Sclerosis Impact Scale-29

PURPOSE

The Multiple Sclerosis Impact Scale-29 (MSIS-29) is a patient self-reported outcome (PRO) that measures patients' quality of life, and it is divided into two sub-scales for the physical (PHYS) and psychological (PSYCH) domains. This study aimed to translate the MSIS-29 into Arabic, cross-culturally adapt it, and examine its psychometric properties.

MATERIALS AND METHODS

One hundred fifty patients with MS completed the MSIS-29-Ar, the Functional Assessment of Multiple Sclerosis (FAMS), and the Short-Form Health Survey (SF-36). After one week, 60 participants were asked to complete the MSIS-29-Ar again to examine test-retest reliability.

RESULTS

The MSIS-29-Ar was clear and understandable among patients with MS in Saudi Arabia. The internal consistency for the MSIS-29-Ar-PHYS was excellent, with a Cronbach's alpha of 0.955, and was good for the MSIS-29-Ar-PSYCH, with a Cronbach's alpha of 0.891. The test-retest reliability for MSIS-29-Ar-PHYS was ICC2,1 = 0.97; 95% confidence interval (0.93, 0.99) and ICC2,1 = 0.95.; 95% confidence interval (0.897, 0.976) for MSIS-29-Ar-PSYCH domains. The minimal detectable change with 95% confidence (MDC95) was 10.28 and 13.37 for the MSIS-29-Ar-PHYS and MSIS-29-Ar-PSYCH, respectively. No floor and ceiling effects were observed. Convergent and divergent validity was supported by 75% of the predefined hypotheses and correlated with the other health-related quality-of-life measures, SF-36 and FAMS.

CONCLUSION

The MSIS-29-Ar questionnaire is a valid and reliable outcome measure among Saudi patients with MS.IMPLICATION FOR REHABILITATIONRehabilitation specialists can confidently interpret patient scores in the MSIS-29-Ar to measure physical and psychological factors impacting patients' quality of life with Multiple Sclerosis (MS).Patients with unchanged clinical status will have similar scores in the MSIS-29-Ar with repeated scale administrations over time.The MSIS-29-Ar can be used in clinical practice and research studies to measure factors that impact the quality of life in Arabic-speaking patients with MS.

Effects of the powerball® system on muscle strength, coordination, fatigue, functionality and quality of life in people with multiple sclerosis. A randomized clinical trial

INTRODUCTION

Although clinical and functional impairments in the lower limbs have been extensively studied in patients with MS, the upper limb (UL) are also frequently affected. Clinical impairment of the UL in patients with MS is very common with muscle strength and hand dexterity as critical factors in maintaining functional activities that are the basis for independence and quality of life in people with MS.

OBJECTIVE

To investigate the effects of a training protocol using the Powerball® system in combination with conventional physiotherapy on muscle strength, coordination, fatigue, functionality, and quality of life in persons with MS over an 8-week period.

MATERIALS AND METHODS

A double-blind randomized controlled trial was conducted. The control group received conventional treatment, while the experimental group received additional UL training using the Powerball® system. Both groups received the same number of sessions and weeks of intervention. The following outcome measures were used: isometric grip and pinch strength, Box and Block Test (BBT), Nine Hole Peg Test (NHPT), Abilhand scale, Fatigue Severity Scale (FSS), Multiple Sclerosis Impact Scale (MSIS-29), and Likert satisfaction questionnaire for the experimental group. All measures were administered at baseline, after the treatment, and during a 3-week follow-up period.

RESULTS

25 patients completed the study (12 in the experimental and 13 in the control group). The experimental group showed significant improvements in coordination and manual dexterity of the more affected UL as measured by the BBT comparing pre- to post-treatment (p = 0.048) and pre-treatment to follow-up (p = 0.001), and on the less affected UP comparing pre-treatment to follow-up (p < 0.001) and post-treatment to follow-up (p = 0.034). The Likert-type satisfaction questionnaire obtained a mean score of 89.10 (± 8.54) out of 100 points.

CONCLUSIONS

Upper limb treatment protocol using the Powerball® system, in combination with conventional physiotherapy for 8 weeks resulted in significant improvements in the intra-group analysis for UL coordination and manual dexterity in favor of the experimental group. The experimental group showed excellent satisfaction to the treatment.

The effect of saffron and corrective exercises on depression and quality of life in women with multiple sclerosis: A randomized controlled clinical trial

Multiple Sclerosis (MS) is a chronic inflammatory disease of the central nervous system which causes various complications such as reduced ability to do daily activities, depression and early death of patients. The present study aimed to compare the effect of saffron and corrective exercises on depression and quality of life in women with MS. This randomized controlled clinical trial was conducted on 80 MS women for 12 weeks. Participants were selected through convenience sampling and allocated into four study groups (three intervention groups and one control group) using the stratified block randomization. The Expanded Disability Status Scale, Beck Depression Inventory and The Multiple Sclerosis Impact Scale were used to collect data at the start of the study and also at the end of the sixth and the twelfth weeks. At the end of the twelfth week, the depression mean scores in all experimental groups (saffron group, corrective exercises group, corrective exercises + saffron group) were significantly different compared to the control group (P < 0.05), and this difference in corrective exercises + saffron group was more than the others. Also, at the end of the twelfth week, the mean scores of the quality of life (both physical and mental dimensions) in all experimental groups were significantly different from the control group (P < 0.05). The saffron group in physical dimension and the corrective exercises + saffron group in psychological dimension showed a significant difference with other groups. Although each of the corrective exercises program and saffron consumption alone were effective in reducing depression and enhancing the quality of life in MS patients, the consequences will be more beneficial in case these two interventions are used together. Therefore, it is necessary to encourage MS patients to consume saffron supplement along with doing physical activities in caring and rehabilitation programs.

Psychometric properties of the Croatian version of the Multiple Sclerosis Walking Scale (MSWS-12)

PURPOSE

Walking difficulties in people with multiple sclerosis (pwMS) are one of the most pronounced predictors affecting patients' quality of life. The study objective was to determine the psychometric properties of the Croatian version of the Multiple Sclerosis Walking Scale (MSWS-12) among pwMS in Croatia and to examine the association between MSWS-12 and Depression, Anxiety, and Stress Scale-21 (DASS-21), and Multiple Sclerosis Impact Scale-29 (MSIS-29).

MATERIALS AND METHODS

A cross-sectional study included a sample of pwMS (N = 148). Psychometric properties were examined by estimating the validity and reliability of the MSWS-12. The predictive validity of MSWS-12 and demographic and disease-related factors were assessed by a hierarchical regression model using MSIS-29 and DASS-21 as criterion variables.

RESULTS

Scale reliability was good for the MSWS-12 scale, expressed by Cronbach's alpha coefficient (α = 0.98). Correlations between MSWS-12 and DASS-21 (0.20-0.27) and between MSWS-12 and MSIS-29 subscales (0.47-0.83) provided initial support for the convergent validity. Factor analysis demonstrated the unidimensional structure of the MSWS-12.

CONCLUSIONS

The Croatian version of the MSWS-12 is a reliable, valid, and clinically useful tool for assessing walking impairments in pwMS.Implications for rehabilitationWalking difficulties in people with multiple sclerosis (pwMS) are one of the most pronounced predictors affecting patients' quality of life.Multiple Sclerosis Walking Scale (MSWS-12) is a measure of the disease's impact on walking abilities from the patient's perspective.MSWS-12 is a reliable scale for assessing walking speed, endurance, and gait quality in multiple sclerosis and is validated in several languages (Korean, Italian, Brazilian, and Persian).The Croatian version of the MSWS-12 is a reliable, predictive, and valid tool for screening walking impairments in pwMS.

Adaptive changes in muscle activity after cryotherapy treatment: Potential mechanism for improvement the functional state in patients with multiple sclerosis

BACKGROUND

The available literature lacks data about the influence of whole body cryotherapy (WBC) on muscle activity in patients with sclerosis multiplex (MS).

OBJECTIVE

Assessment of the influence of the 20 WBC series on the surface electromyography (sEMG) signal and the relationship between it and the functional state in patients with MS.

METHODS

The study group was 114 of MS patients (aged 45.24±11.88yr.,) which 74 of them received 20 of WBC. An assessment was made of: the hand grip (HGS), Timed 25-Foot Walk, Fatigue Severity Scale, sEMG signal from the dominant limb.

RESULTS

After a series of 20 WBC: in the rest electromyograms, an increase of extensor carpi radialis (ECR) and a decrease of flexor carpi radialis (FCR) amplitude were demonstrated (non-normalized signal ECR p = 0.0001); significant differences in sEMG rest signals between ECR and FCR have decreased; for voluntary contraction in both assessed antagonistic muscle amplitude was significantly decreased (p = 0.0005; p = 0.0316, p = 0.0185); an increase of HGS (p < 0.001); gait improvement (p = 0.001); decrease fatigue (p = 0.024). No significant changes were observed in the control group.

CONCLUSIONS

Series of 20 WBC improves the functional state and reduces fatigue in patients with MS, which may be due to adaptive changes in bioelectrical muscle activity.

Psychometric properties of the Croatian version of the depression, anxiety, and stress scale-21 and multiple sclerosis impact scale-29 in multiple sclerosis patients

OBJECTIVES

Depression, anxiety, stress, and physical disabilities are a common complaint in people with multiple sclerosis (MS), and monitoring of these symptoms are based on self-report questionnaires. The objective of this study was to determine psychometric properties of the Croatian version of the Depression, Anxiety, and Stress Scale-21 (DASS-21) and Multiple Sclerosis Impact Scale-29 (MSIS-29) in people with MS.

MATERIALS AND METHODS

We included data on 163 people with MS registered in the Association of multiple sclerosis societies of Croatia (AMSSC). Patients' demographic information, education level, and disease-related variables were ascertained. DASS-21 was applied for assessing depression, anxiety, and stress, while MSIS-29 scale was used for assessment of the physical and psychological impact of MS disease. Psychometric properties were examined by estimating the validity and reliability of the DASS-21 and MSIS-29 scale. Predictive validity of DASS-21 subscales and relevant demographic and disease-related variables was examined by the hierarchical regression model.

RESULTS

The Croatian version of the three DASS-21 subscales and two MSIS-29 subscales had excellent internal consistencies (Cronbach's alpha coefficients 0.88-0.93) and good convergent validity, as expressed by inter-correlations between DASS-21 and MSIS-29 subscales. Hierarchical regression analysis using MSIS-29 subscales as criterion variables showed consistent evidence for the predictive validity of depression, anxiety, and stress on psychological impact, and predictive validity of age, EDSS, and anxiety on physical impact.

CONCLUSIONS

The Croatian versions of DASS-21 and MSIS-29 are reliable and valid scales in people with MS.

Impact of multiple sclerosis phenotypes on burden of disease in Finland

Aims: The aim of this study was to quantify how multiple sclerosis (MS) phenotypes differ from each other in respect of costs and quality-of-life.Materials and methods: The study is based on survey data from Finnish patients with MS (n = 553). The information contained disease type, disease severity according to self-reported Expanded Disease Severity Scale (EDSS), healthcare resource use, and medication use. In addition, information related to employment and early retirement was collected. EQ-5D-VAS and Multiple Sclerosis Impact Scale-29 (MSIS-29) instruments were used to collect quality-of-life data, and Fatigue Severity Scale (FSS) instrument for evaluating fatigue. Patients were stratified based on their disease type (relapsing-remitting MS (RRMS), secondary progressive MS (SPMS), primary progressive MS (PPMS)) and disease severity. The data were primarily analyzed using summary statistics.Results: SPMS had the highest annual total cost (71,177€) followed by PPMS (51,082€) and RRMS (36,492€). Early retirement covered the greatest share of costs in RRMS (39%) and SPMS (43%). In PPMS, early retirement and professional care were the two most equally important cost drivers, contributing together 56% of the total costs. Direct healthcare costs were responsible for 33%, 19%, and 18% of total costs in RRMS, SPMS, and PPMS. The mean EDSS in RRMS, SPMS, and PPMS were 2.5, 5.5, and 5.9, respectively. Differences in the quality-of-life were observed with both disease specific (MSIS-29) and generic (EQ-5D-VAS) instruments. The mean utility value from EQ-5D among patients with RRMS, SPMS, and PPMS was 0.76, 0.52, and 0.49, respectively. In addition, patients with SPMS and PPMS were more likely to report fatigue than patients with RRMS.Conclusions: MS phenotype has an impact on costs and quality-of-life of the patients. Early retirement seems to be one of the most important contributors to MS-related costs.

Multiple sclerosis in Finland 2018-Data from the national register

OBJECTIVES

Finland is a high-risk multiple sclerosis (MS) region, but a national MS register has not existed until 2014. In this paper, we present the Finnish MS register variables and data collected by 31 December 2018.

MATERIALS AND METHODS

Numbers and data counts of MS patients in the register (ICD-10 code G35) are presented. The disease types and proportion of patients receiving disease-modifying treatments (DMTs) were analysed in five hospital districts with most complete data sets. MS prevalence in Finland was estimated using administrative hospital discharge data as an additional resource.

RESULTS

There were a total of 8722 MS patients in the Finnish MS register by 31 December 2018 (71.5% females). Mean age at MS diagnosis was 38.7 years and peak prevalence was at age 50-54 years. Disease course was relapsing remitting (RRMS) in 66.7%, secondary progressive (SPMS) in 13.5%, and primary progressive (PPMS) in 7.9% of the 5365 MS patients in the selected districts with most complete data. A total of 66.0% of RRMS patients, 19.6% of SPMS patients and 9.9% of PPMS patients were receiving DMTs. By combining MS register data with databases of those hospitals that had not joined the register, the nationwide prevalence estimate was between 10 and 11 thousand patients (corresponding to crude prevalence 180-200/100 000).

CONCLUSIONS

The Finnish MS register is currently used in 15/21 Finnish hospital districts. By register integration into the electronic patient files, the coverage of the register has increased to approximately 80% of the estimated Finnish MS population.

Improving the job-retention strategies in multiple sclerosis workers: the role of occupational physicians

Several studies evaluated whether a person with multiple sclerosis is employed or not and investigated the main symptoms that hinder the job performance. However, despite occupational physicians are fundamental in managing disabled subjects, there is a serious lack of data regarding their role in improving employability of these workers. In this regard, we assessed occupational physicians' professional activity and training/updating needs in order to identify and develop management tools, operative procedures and training programs helpful to support and implement adequate job-retention strategies. Four hundred three Italian occupational physicians compiled a self-administered questionnaire to evaluate individual demographics, health surveillance system, fitness for work and training needs. Our findings confirmed the suitability to adopt environmental adjustments at workplace (particularly referring to the ergonomics of workstation, the typology of occupational risk factors and the working time) to accommodate individual's needs in order to improve working ability among multiple sclerosis workers. Moreover, training events discussing operational guidelines and standardized instruments and/or methodologies to adequately manage the disable workers should be fostered. Therefore, in this regard, occupational physicians could play a key role but they need more high-quality training especially concerning the different tools that are currently available to assess the work issues in multiple sclerosis patients.

Turkish version of Parkinson Fatigue Scale: Validity and reliability study of binary scoring method

OBJECTIVES

The aim of the present study was to translate and cross-culturally adapt the Parkinson Fatigue Scale (PFS) into Turkish and to evaluate its reliability and validity.

PATIENTS AND METHODS

Between September 2015 and May 2016, a total of 138 patients (84 males, 54 females; mean age 62.8±9.3 years; range, 42 to 83 years) with Parkinson's disease (PD) were included in this study. The Turkish version of the PFS was analyzed for data quality, scaling assumptions, acceptability, reliability, and validity. We used the binary scoring method of the Parkinson Fatigue Scale.

RESULTS

The data quality for the Turkish version of the PFS was excellent. The scaling assumption was acceptable. The scale provided an acceptable internal consistency (Cronbach's alpha was 0.955 for a test and 0.941 for a retest, and corrected item-to-total correlations were ranged from 0.478 to 0.849. The test-retest reliability (correlation coefficients were ranged from 0.650 to 0.875) was adequate. Although the total binary score of the PFS was not associated with demographic and clinical data, it was significantly correlated with some of the clinical rating scale scores, including the Unified Parkinson's Disease Rating Scale, Schwab & England Activities of Daily Living Scale, Hospital Anxiety and Depression Scale, Epworth Sleepiness Scale, Pittsburg Sleep Quality Index, 36-item Short Form Health Survey, 39-item Parkinson's Disease Questionnaire, and Fatigue Severity Scale.

CONCLUSION

The Turkish version of the PFS is an acceptable, valid, and reliable tool for the assessment of fatigue in PD patients.

Validity and reliability of the Finnish version of the Multiple Sclerosis Impact Scale-29

BACKGROUND

The Multiple Sclerosis Impact Scale-29 (MSIS-29) has been increasingly used to evaluate the self-perceived impact of multiple sclerosis (MS) on a patient.

OBJECTIVES

The aim of this study was to evaluate the psychometric properties of the Finnish version of MSIS-29 in patients with MS.

METHODS

A total of 553 patients with MS completed the MSIS-29 and self-administered questionnaires capturing information on demographics, disease characteristics and severity, perceived quality of life (EuroQol 5D-3L instrument), and fatigue (Fatigue Severity Scale).

RESULTS

The data quality for MSIS-29 was excellent, with 99.5% computable scores for the MSIS-29 physical scale and 99.3% for the MSIS-29 psychological scale. Floor and ceiling effects were minimal. Excellent Cronbach's alpha values of 0.97 and 0.90 were seen for MSIS-29 physical and psychological subscales, respectively. The physical subscale showed highest correlations with measures of physical functioning, such as disease severity and the mobility domain of the quality of life. Similarly, the psychological subscale showed highest correlations with self-reported fatigue and the anxiety/depression domains of the quality of life. MSIS-29 physical scores related strongly to disease severity, whereas the MSIS-29 psychological scores increased in mild disease but declined in more severe disease forms.

CONCLUSION

The Finnish version of MSIS-29 has satisfactory psychometric properties. Consistent with the previous recommendations, the use of two MSIS-29 subscale scores instead of a total score was supported.

Validity and reliability of the Fatigue Severity Scale in Finnish multiple sclerosis patients

BACKGROUND

Fatigue is one of the most debilitating symptoms in multiple sclerosis (MS) considerably interfering with patients' daily functioning. Both researchers and clinicians need psychometrically robust methods to evaluate fatigue in MS.

OBJECTIVES

The objective of this study was (i) to evaluate the psychometric properties of the Finnish version of the Fatigue Severity Scale (FSS) and (ii) to describe the results among patients with MS.

METHODS

In total, 553 patients with MS (mean age, 53.8 years; standard deviation [SD], 11.4; 79% women: mean patient-defined disease severity, Expanded Disability Status Scale [EDSS] 4.0, SD, 2.5) completed the self-administered questionnaires including the FSS. A standard procedure was used for the translation of the FSS.

RESULTS

The mean (SD) score for the FSS was 4.5 (1.7); in 65% of the patients, the score was ≥4.0. The data quality of the FSS was excellent, with 99.6% of computable scale scores. Floor and ceiling effects were minimal. The FSS showed high internal consistency (Cronbach's alpha, 0.95). Unidimensionality was supported based on confirmatory factor analysis with the comparative fit index being 0.94. The FSS showed moderate/high correlations with the perceived burden of the disease, quality of life and disease severity, whereas, age or gender did not have a significant effect on the FSS score.

CONCLUSIONS

The Finnish version of the FSS showed satisfactory reliability and validity and thus can be regarded as a feasible measure of self-reported fatigue.