Obstructive sleep apnea syndrome, Triglyceride-glucose index, Sarcopenia, Polysomnography, SARC-F, Nutritional diseases. Deficiency diseases, RC620-627

Abstract Background Given the clear association between obstructive sleep apnea (OSA) and metabolic disorders, coupled with a limited understanding of sarcopenia in patients with OSA, this study aimed to investigate the relationship between triglyceride-glucose (TyG) index and sarcopenia and in an elderly population with OSA. Methods Multiple hematological and sleep-breathing status were meticulously recorded in the cohorts. The SARC-F scale ≥ 4 was considered indicative of probable sarcopenia. The correlations between clinical indicators and the SARC-F score were analyzed. The area under the curve (AUC) was utilized to assess the predictive ability of TyG for sarcopenia and sarcopenic obesity. Logistic regression analysis and sensitivity stratification were employed to explore the influence of TyG. Results A total of 1,148 individuals were included, among whom the median age was 66 (62, 71). 46.3% (n = 531) were diagnosed with severe OSA, while 24.0% (n = 276) had probable sarcopenia. The SARC-F score exhibited positive correlations with TyG (r = 0.122, P 2.0, P