Current Aging Science - Online First

Sarcopenic obesity (SO) is characterized by the simultaneous presence of both obesity and sarcopenia in the same individual, and it is associated with adverse health outcomes such as falls, hospitalization, functional disability, and mortality. This study aimed to provide a comprehensive analysis of the prevalence of SO in the elderly population through a systematic review and meta-analysis of the scientific literature.

A systematic search was conducted in the PubMed, Embase, Web of Science, and LILACS databases for observational studies published up to July 2023 on the prevalence of SO in individuals aged 65 years or older. Data were collected from the selected and included articles, including general study information, demographic characteristics of the samples, methods, and results. The quality of the studies was assessed using the Newcastle-Ottawa Scale (NOS) criteria. A random-effects model was applied for the quantitative synthesis (meta-analysis) of combined prevalence data, and the I-squared index (I²) was used to assess heterogeneity. Publication bias was evaluated using a funnel plot and Egger’s test.

A total of 37 articles meeting the eligibility criteria were selected and included in this meta-analysis. Heterogeneity among the studies was observed, along with evidence of publication bias. Most studies were classified as having a high risk of bias. The pooled prevalence of SO in the elderly was 10% (95% CI: 8%−12%; I²: 99.10%, p<0.001). A similar result was observed after stratification by sex, with a prevalence of 10% in both men (95% CI: 8%−12%; I²: 97.46%, p<0.001) and women (95% CI: 8%−12%; I²: 98.72%, p<0.001). Subgroup and sensitivity analyses revealed that the study setting, criteria used for the diagnosis of obesity, and the risk of bias in the studies were potential factors contributing to the heterogeneity in the prevalence of SO in the elderly.

This meta-analysis indicated a significant prevalence of SO among the elderly population, with no difference by sex, highlighting SO as a substantial health problem in this population. These findings underscore the importance of interventions to reduce the occurrence of SO in the elderly.

Physical and leisure activities are vital for active aging. Leisure activities among the aging population have received attention from scholars in the recent past. However, the research contributions and trends in this field are unknown. Therefore, a bibliometric analysis was conducted to explore the scholarly contributions in aging and leisure activities to identify the research output trends, assess thematic focuses, and analyze research collaboration patterns.

We extracted data from the Scopus database for the period 2000-2023 and identified 443 articles focusing on aging and leisure activities. Tools, such as bibliographical coupling networks and thematic analysis, were applied using R and Biblioshiny to uncover core themes and connections.

There has been a significant increase in research output since 2021, with contributions from numerous authors and countries, particularly the United States and China. Thematic analysis reveals central themes, such as physical activity, successful aging, and cognition.

This analysis reveals the evolving nature of scholarly discussions in aging and leisure, highlighting key themes, such as physical activity, cognitive aging, and health promotion. The findings emphasize the growing interest and global collaboration in this interdisciplinary research domain.