... who practiced either a ballistic or a ramppinch task, an increase in force and acceleration, asso-ciated with an increase in MEP amplitude, was observed in the muscle involved in the training, ... 3 of 8RESEARC H Open Access Reversal of TMS-induced motor twitch by training is associated with a reduction in excitability of the antagonist muscleViola Giacobbe1*, Bruce T Volpe1, Gary ... Importantly, the direction change of the movement was associated with a significant decrease in MEP amplitude of the antagonist to the trained muscle, rather than an increase in MEPamplitude of the...