I'm not sure, but you can explain -this- woman adding to the discrepancy.
I hate listening to muscle guys grunting as they lift, and it's embarrassing when I get to one of the machines and have to lower the weight significantly... after a little elderly lady just finished.
I like getting outside to workout anyways, much prettier view.
I have a feeling women focus more on cardio because when I go on my daily walks the number of women walking/running outnumber the number of men even on bikes.
