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    Association of sleep quality and daytime sleepiness with cognition in the elderly
    (Geriatrics Society, 2015) Soykök, Gülay; Yilmaz, Rezzak; Şentürk, Ahmet İlteriş; Çevik, Şeyda; Figül Gökçe, Şeyda; Kayim Yildiz, Özlem; Topaktaş, Suat
    Introduction: The association between sleep problems and cognitive dysfunction is not reported in Turkey. The aim of the study was to evaluate the association between sleep quality and daytime sleepiness with cognitive functioning and to identify factors that influence cognitive state in the elderly. Materials and Method: Using a simple random sampling method, 500 individuals, aged ?60 years, living in the city of Sivas were recruited into our study. Standardized mini mental test, Pittsburgh Sleeping Quality Index and Epworth Sleepiness Scale tests were used to evaluate overall cognition, sleep quality, and daytime sleepiness, respectively. Results: Lower cognitive functions were found to be significantly associated with age, female gender, living alone, low level of education and socioeconomic status. Impaired cognition was found in 53.8% of individuals with sleep quality disorder and 63.7% of individuals with daytime sleepiness (p < 0.05). According to logistic regression analysis, the risk of cognitive dysfunction in participants with a sleep quality disorder and daytime sleepiness were 4.17 and 3.48 times higher compared to individuals without the disorder respectively. Conclusion: Sleep quality disorders were found to be prevalent in the elderly. A close relationship was found between cognitive dysfunction with poor sleep quality and daytime sleepiness. © 2015, Geriatrics Society. All rights reserved.
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    Development, reliability, and validity of the telerehabilitation satisfaction questionnaire in neurological diseases
    (Elsevier Ireland Ltd, 2024) Eldemir, Sefa; Eldemir, Kader; Saygili, Fettah; Ozkul, Cagla; Kasikci, Merve; Yilmaz, Rezzak; Akbostanci, Muhittin Cenk
    Background: Measuring satisfaction with telerehabilitation provides a way to evaluate and improve the effectiveness of both the technology used and the rehabilitation provided. On the other hand, valid and reliable tools are needed to evaluate satisfaction of patients receiving physiotherapy via telerehabilitation. Aims: The purpose of the current study was to develop Telerehabilitation Satisfaction Questionnaire (TrSQ) and evaluate its validity and reliability. Methods: Sixty-three patients with stroke, Multiple Sclerosis, or Parkinson's disease participated in this study. Content validity was reviewed by a panel experienced in telerehabilitation. Construct validity of the model was investigated using and Confirmatory Factor Analysis (CFA) and Explanatory Factor Analysis (EFA). Test-retest reliability and Internal consistency were used to evaluate the reliability of the TrSQ. Results: A one-factor structure was determined based on EFA. The structure fitted well in terms of the fit indices according to the confirmatory factor analysis results (x2/df = 1.016, p = 0.442, IFI=0.997, CFI=0.997, and RMSEA=0.016). The questionnaire was proven to have an acceptable reliability level (Cronbach's alpha = 0.858) and it was found that all items were necessary. Finally, an 11-item version was obtained and tested twice on 30 patients. The questionnaire was shown to have acceptable test-retest reliability (ICC=0.753). Conclusions: TrSQ can be used as a valid and reliable questionnaire in evaluating patient satisfaction with telerehabilitation in neurological diseases. However, in order for it to be widely applicable, adaptation to different languages is needed.
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    The effects of standard and modified LSVT BIG therapy protocols on balance and gait in Parkinson's disease: A randomized controlled trial
    (Wiley, 2024) Eldemir, Sefa; Eldemir, Kader; Saygili, Fettah; Ozkul, Cagla; Yilmaz, Rezzak; Akbostanci, Muhittin Cenk; Guclu-Gunduz, Arzu
    Background: Lee Silverman voice treatment (LSVT) BIG is an exercise program developed for patients with Parkinson's disease (PwPD), consisting of sets of exercises performed for 4 consecutive days a week for 4 weeks. However, the standard protocol suggests a treatment frequency difficult to follow for most patients who have difficulties reaching rehabilitation clinics. Our aim was to compare the standard LSVT BIG protocol with a modified LSVT (m-LSVT) BIG protocol (twice a week in the clinic for 4 weeks and twice a week at home for 4 weeks). Methods: In this randomized controlled trial, 16 PwPD (aged 18-80 years, Hoehn and Yahr stages I-III) were recruited into two groups. The LSVT group received standard LSVT BIG training (four times per week for 4 weeks at the clinic). The other group was given m-LSVT BIG exercises, but unlike the LSVT group, the m-LSVT group exercised twice a week at the clinic and twice a week at home for 4 weeks. The Berg Balance Scale was used to assess functional balance. Biodex Balance System was used to assess laboratory balance measures. Timed Up and Go test and G-Walk sensor system were used to assess functional mobility and spatiotemporal gait analysis. Results: Significant group-by-time interactions on the eyes open-firm surface score of the modified clinical test of sensory integration of balance (F = 10.138, p = .007) and gait cycle symmetry index (F = 10.470, p = .010) were found to be in favor of the LSVT group. Additionally, post hoc analyses revealed that both groups significantly improved postural stability, gait speed, motor symptoms, and functional mobility (p < .05). Conclusion: The results revealed the beneficial effects of the modified protocol on balance and gait in PwPD, as well as the superiority of the standard LSVT BIG protocol. The m-LSVT BIG protocol may be an effective intervention method, especially for PwPD who have difficulty adapting to the treatment frequency of the standard protocol.