Limitations
RECRUITMENT
It might be suggested that the recruitment of 16 participants in this study involving a more variable intervention might have led to low statistical power even though the power analysis indicated that 8–10 participants should provide sufficient power. This lower power may have diminished the possibility of revealing any sex differences. Furthermore, as only the KE (quadriceps) were tested, future studies should aim to determine if other muscle groups ipsilateral to the site of stimulation are affected in a similar manner, while also utilizing transcranial magnetic stimulation (TMS) to determine potential changes in corticospinal excitability. When combined with transmastoid electrical stimulation which activates axons in the spinal cord, effects can be distinguished between cortical and spinal excitability or inhibition. Finally, as reviewed by Savoury et al. [