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OBJECTIVES The aim of this study was to investigate the immediate effects of facilitatory and inhibitory kinesiotaping on motor neuron excitability. DESIGN Randomized cross-over trial. METHOD Twenty healthy people received inhibitory and facilitatory kinesiotaping on two testing days. The H- and M-waves of the lateral gasterocnemius were recorded before and immediately after applying the two modes of taping. The Hmax/Mmax ratio (a measure of motor neuron excitability) was determined and analyzed. RESULTS The mean Hmax/Mmax ratios were -0.013 (95% CI: -0.033 to 0.007) for inhibitory taping and 0.007 (95% CI: -0.013 to 0.027) for facilitatory taping. The mean difference between groups was -0.020 (95% CI: -0.048 to 0.008). The statistical model revealed no significant differences between the two interventions (P = 0.160). Furthermore, there were no within-group differences in Hmax/Mmax ratio for either group. CONCLUSIONS Our findings did not disclose signs of immediate change in motor neuron excitability in the lateral gasterocnemius.