Here's my first idea for your logo. I tried to combine what I think you liked about the 2 designs you cited, while still keeping it simple. I initially just had the female figure, but figured males were also in your target audience. So I added the male.
Please let me know what you'd like changed, added or deleted. (the measurement hatches, etc) I'd be happy to make any revisions you might want. Thanks for the invitation!
Its looks visibly great, the only thing i am afraid of (and i will test it later by printing) is that when printed small, no one will see the dots. it will just look like a line.
If you are willing to give it another shot, could you try to do it even more simple? go down to the basics.
I hate myself for saying that. despite adoring what i have commented about, all the feedback that i recieve is that it should stay simple.