WASHINGTON (AP) — More than half of female Marines in boot camp can’t do three pullups, the minimum standard that was supposed to take effect with the new year, prompting the Marine Corps to delay the requirement, part of the process of equalizing physical standards to integrate women into combat jobs.

The delay rekindled sharp debate in the military on the question of whether women have the physical strength for some military jobs, as service branches move toward opening thousands of combat roles to them in 2016.