The results showed a negative correlation between LAR and sarcopenia in the participants included in the study (OR = 0.399, 95% CI: 0.224–0.712, p = 0.007), which was further confirmed as non‑linear using RCS regression analysis (nonlinear p = 0.037), with one significant inflection point identified; participants with LAR ≥ 1.268 demonstrated a significantly reduced risk of sarcopenia.
The analysis showed that an elevated LAR level is significantly associated with a lower risk of sarcopenia, which suggests its potential role as a biomarker of muscle health. Further research is needed to elucidate the underlying mechanisms and confirm these results in prospective studies.