Over the 10-week treatment period , small improvements were seen in VAS -15 ( -26 to -3.5 ) , MYMOP -0.89 ( -1.4 to -0.3 ) , SPS -2.5 ( -4.2 to -0.82 ) and resting diastolic BP -5.2 ( -10.4 to -0.14 ) in the true acupuncture group .