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Although several studies have been conducted in Bangladesh regarding sleep problems during the COVID-19 pandemic, none have utilized a large nationwide sample or presented their findings based on nationwide geographical distribution. Therefore, the aim of the present study was to explore the total sleep duration, night-time sleep, and daily naptime and their associated factors as well as geographic information system (GIS) distribution. A cross-sectional survey was carried out among 9730 people in April 2020, including questions relating to socio-demographic variables, behavioral and health factors, lockdown, depression, suicidal ideation, night sleep duration, and naptime duration. Descriptive and inferential statistics, both linear and multivariate regression, and spatial distribution were performed using Microsoft Excel, SPSS, Stata, and ArcGIS software. The results indicated that 64.7% reported sleeping 7–9 h a night, while 29.6% slept less than 7 h nightly, and 5.7% slept more than 9 h nightly. 43.7% reported 30–60 min of daily nap duration, whereas 20.9% napped for more than 1 h daily. Significant predictors of total daily sleep duration were being aged 18–25 years, being unemployed, being married, self-isolating 4 days or more, economic hardship, and depression. For nap duration, being aged 18–25 years, retired, a smoker, and a social media user were at relatively higher risk. The GIS distribution showed that regional division areas with high COVID-19 exposure had higher rates of non-normal sleep duration. Sleep duration showed a regional heterogeneity across the regional divisions of the country that exhibited significant associations with a multitude of socioeconomic and health factors.

It is said that psychological stressors have risen during the COVID-19 pandemic, which may contribute to suicidality. A few studies were conducted investigating suicidality amid the first wave of the pandemic in Bangladesh, but none of these studies explored the predictive role of the suicidality-related factors (eg, behavior and health-related variables, COVID-19 risk, fear of COVID-19). Thus, this study aimed to investigate the prevalence of suicidality and the predictive models explaining suicidality variance among Bangladeshi young adults during the second wave of the pandemic. An online-based cross-sectional survey was conducted during the second wave of the pandemic (between 1 and 13 April 2021; a year after the pandemic's inception in the country). The survey questionnaire collected information on socio-demographics, behavior and health-related variables, COVID-19 risk, fear of COVID-19, depression, anxiety, and suicidality. A total of 756 data were analyzed (male 59%; mean age 22.24 ±4.39 years), and hierarchical regression was performed considering suicidality as the dependent variable. A -value <0.05 was set to be statistically significant with a 95% of confidence interval. About 8.2% reported having at least suicidal thoughts within the pandemic inception to survey time (one-year suicidal ideation). More specifically, 7.40% had only suicidal ideation, whereas 0.10% planned for suicide, 0.70% attempted suicide. None of the socio-demographic variables was significantly associated with suicidality. Taking drugs, performing less physical activity, poor self-reporting health condition, being comorbid, being at higher COVID-19 risk, having fear of COVID-19 infection, and suffering from depression and anxiety were significantly associated with a higher risk of suicidality. However, the final model including all of the studied variables explained a 17.1% (F=8.245, <0.001) variance in terms of suicidality. Although this study reported a lower severity of suicidality than prior Bangladeshi studies conducted during the first wave of the pandemic, a portion of people are still at risk of suicide and they should be given attention.

The recently developed Fear of COVID-19 Scale (FCV-19S) is a seven-item uni-dimensional scale that assesses the severity of fears of COVID-19. Given the rapid increase of COVID-19 cases in Bangladesh, we aimed to translate and validate the FCV-19S in Bangla. The forward-backward translation method was used to translate the English version of the questionnaire into Bangla. The reliability and validity properties of the Bangla FCV-19S were rigorously psychometrically evaluated (utilizing both confirmatory factor analysis and Rasch analysis) in relation to socio-demographic variables, national lockdown variables, and response to the Bangla Health Patient Questionnaire. The sample comprised 8550 Bangladeshi participants. The Cronbach α value for the Bangla FCV-19S was 0.871 indicating very good internal reliability. The results of the confirmatory factor analysis showed that the uni-dimensional factor structure of the FCV-19S fitted well with the data. The FCV-19S was significantly correlated with the nine-item Bangla Patient Health Questionnaire (PHQ-90) ( r  = 0.406, p  < 0.001). FCV-19S scores were significantly associated with higher worries concerning lockdown. Measurement invariance of the FCV-19S showed no differences with respect to age or gender. The Bangla version of FCV-19S is a valid and reliable tool with robust psychometric properties which will be useful for researchers carrying out studies among the Bangla speaking population in assessing the psychological impact of fear from COVID-19 infection during this pandemic.

In the modern era, there is a pressing need to develop potential gas adsorbents to reduce the toxic gases produced by modern technology in the environment. In this project, we have investigated 2D graphene and double-doped (B, N) nanosheets for adsorption of N 2 O 4 gas. We used density functional theory calculations to examine how N 2 O 4 gas interacts with pure graphene, doubly boron, nitrogen, and boron-nitrogen-doped graphene sheets. We study the geometrical structure changes, cohesive energy, electronic property, and optical property to assess the stability of the sheets and complex structures, as well as their adsorption ability. Upon analyzing the adsorption energy, we observe an increase in adsorption energies for all the doped nanosheets undergoing N 2 O 4 gas adsorption. The band structure analysis reveals a change in the band gap due to doping and gas adsorption, suggesting an interaction between the gas and the nanosheets. The optical properties analysis primarily reveals the highest values in the X-ray region; however, the analysis of the change in intensity peaks and shifting in the UV region for all structures confirms the interaction between the N 2 O 4 gas and the adsorbent.

Background: A diverse spectrum of long COVID symptoms (LCS) have the scope of physical rehabilitation. Due to limited resources, very little is known about the physiotherapy and rehabilitation interventions for LCS and their clinical application. This study aims to explore the role of physiotherapy and rehabilitation interventions in the management of musculoskeletal, neurological, cognitive, cardiorespiratory, mental health, and functional impairments of LCS. Methods: The study was a systematic scoping review of the literature published between April 2020 and July 2022. Results: 87 articles were extracted followed by a standard process of The Preferred Reporting Items for Systematic reviews and meta-analysis (PRISMA) extension for Scoping reviews (PRISMA-ScR). The included studies had a 3223 LCS population. All types of primary and secondary articles were retrieved except for qualitative studies. The evidence was evaluated by an appraisal scoring tool followed by the guidelines of the \"Enhancing the Quality and Transparency of Health Research ( EQUATOR) network\". The included papers had a mean appraisal score of 0.7807 on a 0 to 1 scale (SD 0.08), the minimum score was for study protocols (0.5870), and the maximum score was for Cohort studies (.8977). Sixty seven (67) evidence-based interventions were documented from 17 clinical categories. The most weighted interventions were treating underlying symptoms of long COVID (Adjusted score 1/1), management of fatigue (Adjusted score 0.963/1), aerobic exercise and balance training (Adjusted score 0.951/1), multidisciplinary rehabilitation (Adjusted score 0.926/1), and low resistance training and aerobic exercise (Adjusted score 0.889/1). Conclusion: We recommend Long COVID rehabilitation in a multidisciplinary approach by treating the individual symptoms, especially fatigue. Physiotherapy interventions play a significant role as most of the recommended interventions were exercise, modalities, patient education, respiratory rehabilitation, and telerehabilitation Scoping reviews do not require protocol registration from PROSPERO.

Background: A diverse spectrum of long COVID symptoms (LCS) have the scope of physical rehabilitation. Due to limited resources, very little is known about the physiotherapy and rehabilitation interventions for LCS and their clinical application. This study aims to explore the role of physiotherapy and rehabilitation interventions in the management of musculoskeletal, neurological, cognitive, cardiorespiratory, mental health, and functional impairments of LCS. Methods: The study was a systematic scoping review of the literature published between April 2020 and July 2022. Results: 87 articles were extracted followed by a standard process of The Preferred Reporting Items for Systematic reviews and meta-analysis (PRISMA) extension for Scoping reviews (PRISMA-ScR). The included studies had a 3223 LCS population. All types of primary and secondary articles were retrieved except for qualitative studies. The evidence was evaluated by an appraisal scoring tool followed by the guidelines of the \"Enhancing the Quality and Transparency of health Research ( EQUATOR) network\". The included papers had a mean appraisal score of 0.7807 on a 0 to 1 scale (SD 0.08), the minimum score was for study protocols (0.5870), and the maximum score was for Cohort studies (.8977). Sixty seven (67) evidence-based interventions were documented from 17 clinical categories. Conclusion: LCS can be treated by physiotherapy, exercise, and physical rehabilitation for musculoskeletal, neurological, cognitive, cardio-respiratory, mental health, and functional impairments at home or in clinical setups such as primary care settings by in-person care or telerehabilitation.

Background A diverse spectrum of long COVID symptoms (LCS) have the scope of physical rehabilitation. Due to limited resources, very little is known about the physiotherapy and rehabilitation interventions for LCS and their clinical application. This study aims to enlist the physiotherapy and rehabilitation interventions in the management of musculoskeletal, neurological, cognitive, cardiorespiratory, mental health, and functional impairments of LCS. Methods The study was a scoping review of the literature published between April 2020 and July 2022. Results 87 records were extracted followed by a standard process of The Preferred Reporting Items for Systematic reviews and meta-analysis (PRISMA) extension for Scoping reviews (PRISMA-ScR). The included records had a 3223 LCS population. All types of primary and secondary evidences were retrieved except for qualitative studies. The evidence was evaluated by an appraisal scoring tool followed by the guidelines of the “Enhancing the Quality and Transparency of Health Research ( EQUATOR ) network”. The included papers had a mean appraisal score of 0.7807 on a 0 to 1 scale (SD 0.08), the minimum score was for study protocols (0.5870), and the maximum score was for Cohort studies (.8977). Sixty seven (67) evidence-based interventions were documented from 17 clinical categories. The most weighted interventions were treating underlying symptoms of long COVID (Adjusted score 1/1), management of fatigue (Adjusted score 0.963/1), aerobic exercise and balance training (Adjusted score 0.951/1), multidisciplinary rehabilitation (Adjusted score 0.926/1), and low resistance training and aerobic exercise (Adjusted score 0.889/1). Conclusion We recommend Long COVID rehabilitation in a multidisciplinary approach by treating the individual symptoms, especially fatigue. Physiotherapy interventions include were exercise, modalities, patient education, respiratory rehabilitation, and telerehabilitation. Scoping reviews do not require protocol registration from PROSPERO .