Effect of a Mobile App-Based Exercise Program on Diastasis Recti Abdominis, Muscle Strength, Anthropometric Measures, and Satisfaction Among Post-Cesarean Primiparous Mothers: A Randomized Controlled Trial

<b>Background</b>: Diastasis rectus abdominis (DRA) is a frequent concern following childbirth, particularly following a cesarean section (CS). Mobile exercise applications offer promising opportunities for enhancing physical therapy services, with potential positive outcomes. <b>Purpose</b>: This study compared the effect of a specific DRA-targeted mobile app-based exercise program on inter-recti distance (IRD) and multiple clinical measures to a traditional abdominal exercise program in post-CS mothers with DRA. <b>Methods</b>: This two-armed, parallel-group, randomized controlled trial involved 40 primiparous women undergoing CS; they were classified into two equal groups. Group A participated in Just Fit, a mobile app-based abdominal exercise program, while Group B received a traditional abdominal exercise program. Both exercise programs lasted 30 min, 3 times/week, for 8 weeks as a home program with follow-up sessions once weekly at an outpatient physical therapy clinic. Ultrasonography was used to measure IRD, a manual muscle test assessed abdominal muscle strength, a tape measure gauged circumferences, and a questionnaire evaluated satisfaction. <b>Results</b>: Both programs showed significant improvements in pre- and post-treatment measures of IRD, muscle strength, and girth (<i>p</i> ≤ 0.001 for all comparisons). Women in Group A exhibited significant post-treatment improvements in IRD above the umbilicus, abdominal muscle strength, girth measurements, and satisfaction compared with those in Group B. However, there were non-significant differences in IRD below the umbilicus and hip circumference between the two groups. <b>Conclusions</b>: The mobile app-based exercise program was associated with greater improvements in IRD above the umbilicus, abdominal muscle strength, waist and umbilical circumferences, and patient satisfaction compared with the traditional exercise program for post-CS DRA. These findings suggest that mobile app-guided rehabilitation may serve as an effective and accessible adjunct to traditional post-CS exercise programs, although larger trials are recommended to confirm these results.