Fig. 3From: Association of age-related decrease in intracellular-to-total water ratio with that in explosive strength of the plantar flexors: a cross-sectional studyRepresentative data of torque and electromyography (EMG) signals during explosive muscle strength measurement in young and older male participants and schematic explanation of the onset of torque and EMG activity. a Plantar flexion torque, b EMG activity of the medial gastrocnemius, c EMG activity of the lateral gastrocnemius, d EMG activity of the soleus, e enlarged view of the time-torque curve around the torque onset in the young participants, and f enlarged view of time-EMG activity of the medial gastrocnemius curve around the EMG onset in the young participants. Black arrows represent the onset of EMG activity. Mmax, peak-to-peak amplitude of M-waveBack to article page