WIY, bowling is just bending over a little? I think not. And just as a by the way, I’m sure you know the halacha that a woman can’t walk in front of man. But alls what they are doing is just walking a little? obviously, its in the way the body moves.
also, im sure you know other is a right way and a wrong way to bend for women (which we learned from rut. the right being to squat down, and the wrong way to lean forward)and to bowl, you have to bend the wrong way- you can’t exacty squat and bowl….