Background: Dysmenorrhea “painful menstruation" Common disorder that influence females' daily 
life activities", Kegel and pelvic rocking exercise have been used to reduce primary dysmenorrhea. Aim:
this study aimed to compare the effect of Kegel versus pelvic rocking exercise on primary dysmenorrhea 
intensity among adolescents at secondary female's schools in al-Mafraq Jordanian city. Design: A quasi –
experimental research design. Setting: This study was carried out at three governmental secondary 
schools at Al-Mafraq Jordan city. Subject: A convenient sample of 216 student with dysmenorrheal were 
recruited. They are randomly, assigned into two groups (Kegel1& Pelvic rocking exercise2). Tools: Data 
was collected through three tools, basic data structured Interview schedule, WALIDD primary 
dysmenorrhea intensity scale and retrospective associative symptom scale (RSS)). Results: Mean age of 
the studied sample was (17.11 ± 0.84 &17.11 ± 0.84) years old in both studied groups respectively. In
addition, 77.7 % of group 1 and 66.7% of group 2 suffered from severe dysmenorrhea while 25.9 % & 
33.3% respectively had moderate dysmenorrhea. After 8 weeks became mild in 48.15, moderate in 36.9% 
and only 15.75 sever in group 1 while group 2 became mild in 3.7%, moderate 74.1% and severe 22.2%, 
effect size indicate mild relation among group 1 (0.486) and low in group 2 (0.250 ).while associative 
symptoms was moderate in two thirds (65.7% and 58.3%) of both groups before intervention, after 8 
weeks were significant in posttest p (0.024) became 100% mild in group 1 while 95.4% in group 2 .the 
effect size moderate in both groups favor to group 1 (0.745 & 0.522 ) respectively .Conclusion: this study 
concluded that exercise significantly reduced intensity of primary dysmenorrhea. Recommendations: 
Kegel exercise technique should be advocated as a non-pharmacological approach for management of 
primary dysmenorrhea.