Abstract: Bioelectrical impedance analysis (BIA) is a simple, rapid, and noninvasive method for assessing body composition. Phase angle (PA) that derives from BIA can be used for the measurement of muscle mass and strength and thus for the diagnosis and prediction of sarcopenia. Sarcopenia is associated with poor health outcomes in chronic kidney disease (CKD) patients.  Studies have suggested that PA may be an important marker for assessing muscle health status in CKD patients. In this article, we present a review about recent progress in the changes of PA in CKD patients with sarcopenia, with the aim of providing a basis for screening, evaluating, and monitoring sarcopenia in CKD patients.

Key words: Phase angle, Bioelectrical impedance analysis, Chronic kidney disease, Sarcopenia