Abstract
Myoelectric signals (EMG) can be recorded using either surface or fine-wire electrodes. In the field of the impact biomechanics, the surface electrodes are typically utilized. However, removal of motion artefacts from EMG signals recorded under impact loading often requires application of high-pass filters with relatively high cut-off frequencies, which may cut significant part of the surface EMG power spectra. The current results indicated that high-pass filtering at 50 Hz can be necessary to remove such artefacts. Such a filtering resulted in higher decrease in magnitude of the surface EMG than that of the fine-wire one. However, the reflex times obtained here were not significantly affected by the type of the electrodes utilized to record EMG. Their average value was around 80 ms for both surface and fine-wire electrodes.