Latifatul Kamilia, Ahmaniyah, A., Ratna Indriyani and Emdat Suprayitno 2022. Cohort Study: Pregnant Exercise with Primigravida Stage II of Labor Delivery. International Journal of Health Engineering and Technology (IJHET). 1, 2 (Jul. 2022). DOI:https://doi.org/10.55227/ijhet.v1i2.38.