In the between-group comparison , there was a decrease in pain perception ( P = @ ; F ( @,@ ) = @ ; R ( @ ) = @ ) and an increase in the PPT of both SIJs , in the right side ( P = @ ; F ( @,@ ) = @ ; R ( @ ) = @ ) and in the left side ( P = @ ; F ( @,@ ) = @ ; R ( @ ) = @ ) .