In terms of the frequency and duration of
the protocol, greater weight gain has been consistently observed when
administering the supplementary stimulation protocol for 15 min 3
times per day [2]. In the present study the shorter 10-min stimulation
sessions 3 times a day also led to greater weight gain. However, differences
in the frequency and duration of the stimulation protocol may
account for inconsistent weight gain findings associated with both kinesthetic
[3,5,14] and tactile stimulation protocols [15]. Further research
is needed on the frequency and duration of supplementary stimulation