Motor unit plasticity is currently incorporated into many professional and collegiate training regiments. Motor unit plasticity can be measured in many ways, the most important of which being neural firing frequency, EMG amplitude, muscle force output, pre-synaptic inhibition, and synchronization. Firing frequency is defined as the number of neuronal signals sent per second on one motoneuron. This frequency is measured in Hertz. Maximum firing frequency in humans typically ranges from 100–200 Hz. Studies incorporating electromyography have proven that adaptation mechanisms occurring as a result of resistance training can drastically increase the maximal firing frequency of a motoneuron. Firing frequency has been shown to
Per-unit system are the same. Here, the per-unit voltages of the two sides are E and E respectively. formula_28 ‘E and E are the voltages of sides 1 and 2 in volts. N is the number of turns the coil on side 1 has. N is the number of turns the coil on side 2 has. V and V are the base voltages on sides 1 and 2. formula_29 For current, we can prove that the per-unit currents of the two sides are the same below. formula_30 where I and I are the per-unit currents of sides 1 and 2 respectively. In