Bibliometric Analysis of the Knowledge Base and Future Trends on Sarcopenia from 1999–2021

Landscape and research trends of sarcopenic obesity research: A bibliometric analysis

Background

Sarcopenic obesity (SO) is a condition characterized by the coexistence of sarcopenia (loss of muscle mass and function) and obesity. This condition has emerged as a public health concern, particularly with the aging population. Despite an approximately 30-year history of SO research, detailed quantitative analysis of existing research was never undertaken. We aimed to depict the landscape of SO research using bibliometric analysis of literature.

Methods

We searched the Web of Science Core Collection on January 15, 2023. The following bibliometric indicators were included: publication trend, the most influential country, the most active discipline, productive institutions, productive journals, prolific and highly cited authors, and highly cited publications. We constructed co-authorship network to explore individual-level, institutional-level, and international-level collaborative patterns in the VOSviewer or Sci2 software. Furthermore, keywords co-occurrence network was extracted by the VOSviewer software, and the burst-detection analysis of keywords was performed using the CiteSpace software.

Results

A total of 2023 original articles were retrieved for data analysis. The publications increased dramatically in the last decade. The United States had the highest number of publications on SO (n = 904). The Seoul National University Hospital was the most prolific institution (n = 54) among the 2675 institutions analyzed. As for journals, Clinical Nutrition had the highest number of publications on SO (n = 75). Kim JH was the most prolific author (n = 25), while Cederholm T authored the most cited publication (9381 citations). More than 80 disciplines were involved in SO research, of which, "Geriatrics and Gerontology" was the most activated discipline. The European Working Group on Sarcopenia in Older People (EWGSOP) consensus was the most cited publication (7209 citations). Moreover, the hotspots of SO have been shifting from its biology, prevalence, and risk factors to its outcomes, prognostic factors, complications, and quality of life. Its relationships also evolved from being between SO and aging to being between SO and other diseases.

Conclusions

Our study provided a comprehensive landscape of SO research, which may help researchers better identify key information and research trends in this field.

Geriatric and Gerontology Research: A Scientometric Investigation of Open Access Journal Articles Indexed in the Scopus Database

BACKGROUND

Scientometric analyses of specific topics in geriatrics and gerontology have grown robustly in scientific literature. However, analyses using holistic and interdisciplinary approaches are scarce in this field of research. This article aimed to demonstrate research trends and provide an overview of bibliometric information on publications related to geriatrics and gerontology.

METHODS

We identified relevant articles on geriatrics and gerontology using the search terms "geriatrics," "gerontology," "older people," and "elderly." VOSviewer was used to perform bibliometric analysis.

RESULTS

A total of 858 analyzed articles were published in 340 journals. Among the 10 most contributory journals, five were in the United States, with the top journal being the Journal of the American Geriatrics Society. The United States was the leading country in research, followed by Japan, Canada, and the United Kingdom. A total of 5,278 keywords were analyzed. In the analysis of research hotspots, the main global research topics in geriatrics and gerontology were older adults (n=663), education and training (n=471), and adults aged 80 years (n=461). These were gradually expanded to include areas related to caring for older adults, such as geriatric assessments (n=395).

CONCLUSION

These results provide direction for fellow researchers to conduct studies in geriatrics and gerontology. In addition, they provide government departments with guidance for formulating and implementing policies that affect older adults, not only in setting academic and professional priorities but also in understanding key topics related to them.

Bibliometric Analysis of Geriatric Sarcopenia Therapies: Highlighting Publication Trends and Leading-Edge Research Directions

The bibliometric analysis assesses the productivity of scholarship in a given field and provides information on the frontiers of relevant developments. However, no bibliometric analysis study has quantitatively analyzed publications in geriatric sarcopenia therapies. This study investigates the scholarly productivity and frontiers of publications in geriatric sarcopenia therapies. The bibliometric data came from English-language Web of Science Core Collection articles published between 1995 and October 19, 2022. Three software programs, R version 3.5.6, VOSviewer, and CiteSpace, were applied for this bibliometric analysis. In twenty-eight years, the annual publications in geriatric sarcopenia therapies have increased yearly, with an annual growth rate of 21.23 %. A total of 1379 publications have been published. The United States was the country with the highest number of publication signatures (n=1,537) (including joint publication releases), followed by Japan (n=1099). Journal of Cachexia, Sarcopenia, and Muscle contributed the best journal publications (n=80). The newest hot subjects in the study about geriatric sarcopenia therapy include malnutrition, obesity, insulin resistance, and cancer. This bibliometric study presents a comprehensive overview of the current and future research directions in geriatric sarcopenia therapies over the past 28 years. Overall, this study has complemented the gaps in bibliometric analysis in geriatric sarcopenia therapies. This paper will provide a valuable reference for future research in geriatric sarcopenia therapies.

Global hotspots and trends in research on preschool children's motor development from 2012 to 2022: a bibliometric analysis

Background

Motor development plays an important role in human development throughout the lifespans, from conception to death, and has received increasing scholarly attention in recent years. However, valuable comprehensive reviews and literature analysis on this topic are still lacking. Here, this bibliometric study aimed to identify global motor development research hotspots and trends on preschool children's motor development from 2012 to 2022.

Methods

CiteSpace 6.1.R4 was used to visualize and analyze general bibliometric characteristics, research hotspots, and trends through a review of 2,583 articles on the motor development of preschool children, which were published from 2012 to 2022 and included in the Web of Science Core Collection.

Results

Research on motor development in preschool children has been carried out into a phase of rapid development. The top five frequently occurring keywords were physical activity (n = 489), performance (n = 319), intervention (n = 222), health (n = 196), and executive function (n = 165); The top five keywords in terms of centrality are academic achievement (0.22), low birth weight (0.16), association (0.14), brain (0.13), and cerebral palsy (0.13). Thirteen keyword clusters were produced from the log-likelihood ratio (Q = 0.74, S = 0.88), and five research topics has been received focused attention in recent years. The keywords with the strongest citation bursts in the last 5 years are developing country (S = 5.92), school-aged children (S = 5.86), middle-income country (S = 3.46), efficacy (S = 5.41), readiness (S = 3.21), motor proficiency (S = 3.6), and screen time (S = 3.3), indicating newly emerging research trends.

Conclusion

The results indicated that interventions involving fundamental movement skills, cognitive function, 24-h movement behaviors, neurodevelopmental disorders, and health-related fitness were hot topics in the field of motor development over the last decade. Emerging research trends generally center on school readiness, socioeconomic status, motor proficiency, and screen time.

Sarcopenia in chronic viral hepatitis: From concept to clinical relevance

Although the frequency of metabolic risk factors for cirrhosis and hepatocellular carcinoma (HCC) is increasing, chronic hepatitis B (CHB) and chronic hepatitis C (CHC) remain the most relevant risk factors for advanced liver disease worldwide. In addition to liver damage, hepatitis B virus (HBV) and hepatitis C virus (HCV) infections are associated with a myriad of extrahepatic manifestations including mixed cryoglobulinaemia, lymphoproliferative disorders, renal disease, insulin resistance, type 2 diabetes, sicca syndrome, rheumatoid arthritis-like polyarthritis, and autoantibody production. Recently, the list has grown to include sarcopenia. Loss of muscle mass or muscle function is a critical feature of malnutrition in cirrhotic patients and has been found in approximately 23.0%-60.0% of patients with advanced liver disease. Nonetheless, among published studies, there is significant heterogeneity in the aetiologies of hepatic diseases and measurement methods used to determine sarcopenia. In particular, the interaction between sarcopenia, CHB and CHC has not been completely clarified in a real-world setting. Sarcopenia can result from a complex and multifaceted virus-host-environment interplay in individuals chronically infected with HBV or HCV. Thus, in the present review, we provide an overview of the concept, prevalence, clinical relevance, and potential mechanisms of sarcopenia in patients with chronic viral hepatitis, with an emphasis on clinical outcomes, which have been associated with skeletal muscle loss in these patients. A comprehensive overview of sarcopenia in individuals chronically infected with HBV or HCV, independent of the stage of the liver disease, will reinforce the necessity of an integrated medical/nutritional/physical education approach in the daily clinical care of patients with CHB and CHC.

Bibliometric analysis of “sarcopenia” in Web of Science

Background

Sarcopenia is defined as age-related muscle wasting defined by the combination of appendicular muscle mass, muscle strength, and physical performance measures. Here, we made a bibliometric analysis of the publications published in the Web of Science (WoS) between 2018 and 2023 in terms of “sarcopenia.” In total, 12,461 articles were analyzed. The authors, publication year, title, publishing country/journal/institution, keywords, Web of Science categories, publishers, indexes, citation topics, and reports were reviewed for each article. All digital researches were done on January 03, 2023.

Results

Among 12,461 articles, according to documents types, 8855 were research articles, 1793 were reviews, 1028 were meeting abstracts, 3963 were early accesses, 364 were letters, and others (proceeding paper, correction, book chapter, etc.). A total of 7446 was open accesses.

According to the number of papers and according to publication year, 3537 were in 2021 (highest), 3349 were in 2022, 3024 were in 2020, 2532 were in 2019, and 19 were in 2023. According to the top 5 Web of Science categories list, 2792 were in Geriatrics Gerontology, 1857 were in Nutrition Dietetics, 1575 were in Medicine General Internal, 983 were in Oncology, and 914 were in Endocrinology and Metabolism. Additionally, 243 papers were in Sport Sciences, 201 were in Rehabilitation, 196 were in Rheumatology, and 187 were in Clinical Neurology.

Top citation topics were Nutrition and Dietetics (6225), Musculoskeletal Disorders (803), Bone Disease (251), Urology & Nephrology-General (236), and Hepatitis (163) (respectively). The number of citing articles, between 2019 and 2023 years, was 39,534 (with self-citations) and 39,088 (without self-citations); times cited was 94,584 (with self-citations) and 69,585 (without self-citations).

Conclusion

Our study highlights the characteristics of researches in sarcopenia and provides an objective insight into the importance of sarcopenia in elderly and patients with chronic rheumatic diseases.

Bibliometrics Analysis and Visualization of Sarcopenia Associated with Osteoporosis from 2000 to 2022

Purpose

Recent years have seen an increased awareness of sarcopenia in the cross field of osteoporosis and sarcopenia. The goal of this study was to evaluate current bibliometric characteristics and the status of cross-sectional studies between osteoporosis and sarcopenia.

Methods

Publications related to osteoporosis and sarcopenia published between January 2000 and November 2022 were extracted from the Web of Science Core Collection; bibliometric and visualization were performed by Microsoft Office Excel, VOSviewer, Citespace, and R.

Results

A total of 1128 documents written by 5791 authors from 1758 organizations in 62 countries and published in 405 journals were identified. USA was the leading country with the highest publication and total citation. University of Melbourne contributed the most publications, while Tufts University had the largest citations. Osteoporosis International was the most influential journals in this field with the highest publications, citations and H index. Cooper C was the most influential author, who published the 20 studies, had the highest local citations and the highest H index. The keywords were classified into 6 clusters: Cluster 1 (aging), Cluster 2 (frailty) and Cluster 3 (osteosarcopenia).

Conclusion

Our bibliometric results revealed that the global osteoporosis and sarcopenia-related research increased rapidly from 2000 to 2022, suggesting it was a promising area of research for the future. The future trends in the cross field of sarcopenia and osteoporosis would be the molecular mechanisms of crosstalk between muscles and bones, safety and efficacy interventions with a dual effect on muscle and bone and osteosarcopenia.

Global research in sarcopenia: High-cited papers, research institutions, funding agencies and collaborations, 1993-2022

BACKGROUND AND AIMS

This bibliometric analysis aims to analyze the high-cited papers (HCPs), those which have received >100 citations) on Sarcopenia to provide insight into publication performances and research characteristics of the literature.

METHODS

Global HCPs on Sarcopenia research were identified from the Scopus database from January 1993 to August 2022. VOSviewer, and Biblioshiny software were used to visualize the collaborative interaction among most productive countries, organizations, authors, and keywords. Select bibliometric measures were applied to evaluate the publication productivity and their influence in this area.

RESULTS

Out of 6219 publications on Sarcopenia only 398 were HCPs. These HCPs received an average of 271.7 citations per publication (CPP). The most productive organizations were the Università Cattolica del Sacro Cuore, Italy, and Jean Mayer USDA Human Nutrition Center on Aging, USA. The most impactful organizations in terms of CPP and relative citation index were CHU de Toulouse, France, and Università Cattolica del Sacro Cuore, Italy. The most productive authors were Landi F and Morley JE, and Anker SD from Italy and Germany respectively. The most impactful authors were: Cederholm T (Sweden), Cruz JAJ (Spain) and Rolland Y (France). There were few/no HCPs from South America, Africa, South Asia, and USSR.

CONCLUSION

Sarcopenia research has been predominantly done in USA, Europe, and China, and rarely from low and middle-income countries. Further focus of research should be on its etiopathogenesis (especially at the molecular level), prevalence in different communities, methods to diagnose it in early stages, and its cost-effective management.

Trends in Nutrition Research for Sarcopenia: A Bibliometric Analysis

Sarcopenia is age-related, pathophysiological muscle atrophy. Research regarding nutrition treatment of sarcopenia has developed rapidly, particularly as populations age. We evaluated the development of trends in this field using a bibliometric analysis. Articles up to July 2022 were searched in the Scopus database. Bibliographic information from the selected publications, such as countries, citations, world maps, institutions, authors, journals, and keywords, were converted and analyzed automatically using the “bibliometrix” package in R environment (version 4.2.0). We identified 368 Scopus articles from 1998–2021. According to citation analyses, 27 documents received more than 100 citations. Bibliometric analysis based on the literature included in this study revealed that South Korea (61 publications), United States (50), Japan (35), China (30), and Italy (20) contributed the most publications. Tehran University of Medical Science (19 records, 2.55% of articles) contributed the most publications. The most productive author was Landi, with eight articles (2.17% of articles). The publications were located in 196 journals, with Nutrients having the most publications (30, 8.15% of articles). The curves representing keywords “sarcopenia” and “aged” were the most apparent. Our analysis suggested that global nutrition and sarcopenia-related research increased rapidly from 2001 to 2021, demonstrating that this was a promising area of future research that could benefit from continued advances. Future research may focus on the effects of age and sex as well as intervention effectiveness, particularly exercise and nutrition supplementation.