Single-pulse motor evoked potentials (MEPs) recorded from the first dorsal interosseous (FDI) muscles before (PRE), immediately after (POST
), and 10 min after (POST
) fatiguing unilateral plantar flexions. (a) MEPs in the FDI muscle ipsilateral (FDIipsi, top traces) and contralateral (FDIcontra, bottom traces) to the fatigued lower limb of a representative subject. Arrows marked with TS indicate the time points of stimulation. Ten traces were average in each set. (b) Group data (n = 10). The abscissa shows time points of measurements (PRE, POST1, and POST2). The ordinate shows the magnitude of MEPs. Filled and open circles represent MEPs in the FDIipsi and FDIcontra, respectively. #indicates statistical significance from PRE in the FDIcontra (p < 0.05). †indicates statistical significance between the FDIipsi and FDIcontra (p < 0.05). Error bars indicate SD.