The study surveyed older adults living in the community, meaning none were residents of care institutions or hospitals. Mean scores were 116.15 (standard deviation 8.36) for intrinsic capacity, 45.10 (standard deviation 7.10) for health promotion behavior, and 43.79 (standard deviation 9.60) for successful aging. Statistical analysis revealed that all three measures were positively correlated with one another, with every pairwise association reaching statistical significance at P < 0.05.

In other words, participants with higher intrinsic capacity tended to report more health promotion behaviors, and both of these were associated with higher successful aging scores. The central test of the study involved mediation analysis using Bootstrap procedures in SPSS 26.0. The results showed statistically significant direct and indirect effects of intrinsic capacity on successful aging.

The indirect pathway through health promotion behavior carried an estimated coefficient of 0.219, with a 95 percent confidence interval of 0.152 to 0.298. Because this interval does not include zero, the authors interpret health promotion behavior as a statistically meaningful mediator in this sample. The authors emphasize that this is a statistical association observed at one point in time, not proof of a causal sequence.

That caveat matters. Because the survey was cross-sectional, it captured a single snapshot and cannot establish whether intrinsic capacity drives health behavior, whether behavior builds capacity, or whether both are shaped by unmeasured factors. Longitudinal and experimental designs would be needed to test directionality.

The sample was also drawn from a single city in China, which limits how far the findings generalize to other populations and settings. Even with these limitations, the study offers a practical angle for community-based health management. If health promotion behavior sits on the pathway between capacity and successful aging, then programs that support such behaviors among older adults, particularly those with declining capacity, may be relevant considerations for public health planners.

The authors suggest that both intrinsic capacity and health promotion behavior deserve attention in community services for older people. The research team, led by Shu Yang, Zhihao Han, Yihui Lin, and Xiaoqin Ma, calls for future studies involving more diverse populations and settings to examine the relationships among the three constructs. As populations worldwide age rapidly, understanding which factors accompany successful aging, and which of those factors might be modifiable, remains a pressing question for aging societies.

Subject of Research: The mediating role of health promotion behavior in the relationship between intrinsic capacity and successful aging among community-dwelling older adults

Article Title: The mediating role of health promotion behavior on intrinsic capacity and successful aging among community-dwelling older adults: a cross-sectional investigation

Article References: Yang, S., Han, Z., Lin, Y., & Ma, X. (2026). The mediating role of health promotion behavior on intrinsic capacity and successful aging among community-dwelling older adults: a cross-sectional investigation. BMC Geriatrics. https://doi.org/10.1186/s12877-026-08593-2

Image Credits: AI Generated

DOI: 10.1186/s12877-026-08593-2

Keywords: successful aging, intrinsic capacity, health promotion behavior, older adults, cross-sectional study, mediation analysis, community-dwelling, BMC Geriatrics, China, public health, mediating, role