| Group | Uterus involution (days) | p value | |||
| Average (SD) | Median | Min | Max | ||
| Postpartum exercise | 8.68 (1.57) | 9 | 6 | 14 | <0.001 |
| Oxytocin massage | 6.72 (1.59) | 7 | 5 | 10 | |