Figure 3

Resultant transverse force varying loading parameters. a) Percent change in transverse forces at constant compressive force (5 N and 10 N). Data was normalized by average transverse forces of each compressive level at 0.25 Hz. Note that increasing frequency (traveling velocity of the massage tip) decreased the resultant transverse force at both 5 N (66% decrease) and 10 N (63% decrease) of compressive force. b) Percent change in transverse forces at constant compressive frequency (0.25 Hz and 0.5 N). Data was normalized by average transverse forces of each frequency level at 5 N. Note that increasing compressive force increased resultant transverse force at both 0.25 Hz (33% increase) and 0.5 Hz (43% increase).