Neuromodulatory Effects of Transcranial Electrical Stimulation in Older Adults With Sarcopenia

INTERVENTION: Sham stimulation group:Sham stimulation;Transcranial electrical stimulation group:Transcranial electrical stimulation; CONDITION: Sarcopenia PRIMARY OUTCOME: Changes in beta‐band event‐related desynchronization (ß‐ERD); SECONDARY OUTCOME: Changes in Beta‐band corticomuscular coherence;Adverse Events;Changes in cortical oxygenated hemoglobin concentration; INCLUSION CRITERIA: 1.Patients meeting the Asian Working Group for Sarcopenia (AWGS) 2025 diagnostic criteria for sarcopenia; 2.Aged >=60 years; 3.Right‐handed; 4.Able to walk independently; 5.Willing to participate in the study and providing written informed consent;