BackgroundSince the 2019 novel coronavirus (COVID-19) pneumonia outbreak in late 2019, an endless stream of research has emerged surrounding physical activity. This study analyzes the 50 most influential articles on COVID-19 and physical activity over the past 2 years to describe the research landscape and hotspots from bibliometric citation analysis.MethodsThe top-50 cited articles were extracted from the Web of Science Core Collection database, and bibliometric citation analysis was performed by Excel 2019 and VOSviewer software.ResultsThe top-50 articles were cited 160.48 ± 106.90 (range: 70–587). Most of the articles were from the United States (14), followed by Italy (11) and England (9). The International Journal of Environmental Research and Public Health (n = 10) is the journal with the top-50 cited articles. The collaboration between authors was mainly among three teams, including Smith L, Musumeci G, and Napoli C. The hotspot of research around COVID-19 and physical activity focused on lifestyle change (sedentary behavior, sitting time), mental health (depressive, anxiety, loneliness), the credibility of physical activity assessment tools (reliability, validity), and physical activity of different populations (gender, youth, children).ConclusionsBased on a bibliometric analysis of high-impact articles on COVID-19 and physical activity highlights physical activity as an essential lifestyle change and developments and hotspots in this field. These data will provide insights for future researchers regarding the direction of physical activity research in the COVID-19 pandemic.
Objective This systematic review and meta-analysis aimed to evaluate the effect of respiratory muscle training on respiratory muscle strength, lung function, cardiopulmonary fitness, and quality of life for chronic kidney disease patients. Methods PubMed, Embase, Web of Science Core Collection, and Cochrane Central Register of Controlled Trials published randomized controlled trials that evaluated the effect of respiratory muscle training for chronic kidney disease patients from inception to December 2021, and rerun on September 2022. The quality of included studies was evaluated according to the Cochrane Collaboration's risk of bias tool-2. The outcomes were analyzed as mean differences with a fixed/random effect model. The strength of evidence was evaluated with the Grading of Recommendation, Assessment, Development, and Evaluation approach. Results Eleven randomized controlled trials were included. All but two of the studies were in hemodialysis patients. The follow-up time range was 4 to 12 weeks. Compared to controls, respiratory muscle training significantly improved maximal expiratory pressure (mean difference = 17.36, p = 0.013), maximal inspiratory pressure (mean difference = 18.26, p = 0.002), forced expiratory volume at 1 second (mean difference = 0.20, p= 0.020), forced vital capacity (mean difference = 0.26, p = 0.008), but not for 6-minute walk test (mean difference = 39.85, p= 0.138). Conclusions As a non-pharmacological therapy, respiratory muscle training can effectively improve maximal expiratory pressure, maximal inspiratory pressure, forced expiratory volume at 1 second, and forced vital capacity in patients with chronic kidney disease and is safe for such populations.
BackgroundPhysical inactivity is an essential factor in the prognosis of patients with chronic kidney disease (CKD). Daily step count is a straightforward measure to assess physical activity levels. Understanding the step counts among different CKD stages is essential to change sedentary behavior.ObjectivesThis systematic review and meta-analysis aimed to investigate the daily step counts in patients with CKD at a different stage.DesignA systematic review and meta-analysis.Data SourcesThe literature search was performed in PubMed, Embase, and Web of Science from inception to November 3rd, 2021.Review MethodsObservational studies (cross-sectional, case-control, or cohort studies) reported specific values of step counts in CKD patients by the wearable device were included. A random-effects model was used to pool the data. Subgroup analysis explored differences in outcomes by stage of CKD. Heterogeneity between studies was assessed using the χ2 test of Cochrane's Q statistic. A contour-enhanced funnel plot was conducted to investigate publication bias. Univariate and multivariate meta-regression was conducted to examine possible sources of heterogeneity.ResultsTwenty-eight articles were identified and used for quantitative analysis. The result showed that the daily step count in patients with CKD was 4642.47 (95% CI: 4274.18–5010.76), and significantly lower than the healthy population. Subgroup analysis revealed that the step counts decreased before dialysis, dropped to a freezing point at the hemodialysis phase, and increased after kidney transplantation. Meta-regression analysis showed that daily step counts were relatively higher in the Americas or younger than 60 or kidney transplant recipients.ConclusionThe status of daily step counts in patients with CKD decreases with CKD severity and increases after kidney transplantation. Although studies have begun to focus on strategies to improve step counts in patients with CKD, future studies should focus more on step counts in pre-dialysis patients and changing their physically inactive lifestyle early to alleviate deteriorating renal function.Systematic Review Registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?RecordID=291551, identifier: CRD42021291551.
Background: This study aims to determine the therapeutic efficacy of exercise interventions for patients undergoing hemodialysis (HD) on fatigue and health-related quality of life (HRQoL). Methods: This review will only include randomized controlled trials (RCTs). The search strategy will be performed in 4 English databases, 4 Chinese databases, Clinical Trials.gov, and the Chinese Clinical Trial Registry. All English or Chinese RCTs, published from inception to May 31, 2020, will be sought. Two reviewers will screen, select studies, extract data, and assess quality independently. Primary outcome is fatigue assessed by questionnaire. The methodological quality including the risk of bias of the included studies will be evaluated using the Physiotherapy Evidence Database scale. Stata 12.0 software will be used for heterogeneity assessment, generating funnel-plots, data synthesis, subgroup analysis, and sensitivity analysis. Results: We will provide some more practical and targeted results investigating the effect of exercise interventions for patients undergoing HD on fatigue and HRQoL in the current meta-analysis, and point out the main limitation of previous studies. Conclusion: The study will provide recent evidence for evaluating the therapeutic efficacy of exercise interventions for patients undergoing HD on fatigue and HRQoL. Registration number: INPLASY202050071 (DOI: 10.37766/inplasy2020.5.0071)
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