an increasing trendp = 0.013
However, the frequencies of the EMG spectrum (reflecting control of motor unit recruitment and muscle fatigue phenomena) showed an increasing trend throughout the session in the RA muscle in particular during the initial session, whereby the Tukey post-test showed significant differences in MNF ( p = 0.013) and MDF ( p = 0.029) ( Figure 4 ). 3.3.3.