Highlights ■ Pre-sarcopenic women showed increased cortical excitation during motor tasks. ■ Sarcopenia was associated with slower motor reaction time. ■ EEG revealed central nervous system changes across sarcopenia stages. ■ Pre-sarcopenia may represent a window for early  neuromotor intervention. ABSTRACT Objective: This study aimed to analyze cortical activity during simple motor reaction time tasks in older women with different degrees of sarcopenia. Methods: This cross-sectional, observational, analytical study included 59 women classified into control, pre-sarcopenia, and sarcopenia groups according […]