EMNG (UPPER LIMBS)

The study aimed to investigate potential diagonal intersegmental interactions in typical human gait, crucial for exploring the feasibility of utilizing electromyographic (EMG) signals to control functional electrical stimulation in paralyzed lower extremity muscles during walking. EMG signals from various upper extremity muscles and the tibialis anterior (TA) were recorded using surface electrodes in 8 women. The analysis revealed variability in both the occurrence frequency and duration of EMG activity across all upper extremity muscles. No single arm muscle exhibited consistent synchrony with the TA in all subjects. However, in 6 subjects, at least one upper extremity muscle showed simultaneous activity with the TA. The study suggests that differences in upper limb movement patterns might obscure or impact the identification of intersegmental interactions during gait.