Yim J, Son NH, Kyong T, Park Y, Kim JH. Muscle mass has a greater impact on serum creatinine levels in older males than in females.
Heliyon 2023;
9:e21866. [PMID:
38027624 PMCID:
PMC10663898 DOI:
10.1016/j.heliyon.2023.e21866]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/06/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Background and aims
We analyzed the effects of age and sex on the relationship between muscle mass and serum creatinine levels in an apparently healthy population, including older adults.
Materials and methods
We retrospectively evaluated 1,502 individuals from the Korea National Health and Nutrition Examination Survey (KNHANES) and 4,586 individuals from the Health Check (HC) groups. We utilized data from the KNHANES and HC groups on serum creatinine levels and skeletal muscle mass index (SMI), determined using dual X-ray absorptiometry or bioelectric impedance analysis.
Results
A significant negative correlation between SMI and age was observed in both the KNHANES and HC groups in males but not in females. In males, serum creatinine levels showed a significant negative correlation with age in both the KNHANES (r = -0.522, P < 0.0001) and HC groups (r = -0.451, P < 0.0001). In females, there was no significant correlation between serum creatinine levels and age in the KNHANES (r = -0.016, P = 0.5985) and HC group (r = -0.011, P = 0.5618).
Conclusions
Serum creatinine levels decrease more significantly in older males than in older females due to sex-specific muscle mass decline.
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