I have tried to build strength training into my cardio and have found that as I get fitter, the added muscle use hass been building muscle tone as I go.
I've been cycling, which is great cardio, but also builds muscle in the lags and arms, Pilates occasionally which helps the abdominals (and may I say it also is great for your back to prevent pain - but check with your doc if you have an injury) and badminton which is all over muscle and cardio workout and balance development.
I'm the sort of person who can't just go out and do something for the sake of it, I have to make it part of something else (like getting to work) so this works for me.
As far as muscle tone helping weight loss, I find it hard to say exactly that the mucle tone has helped as it's all part of added exercise and has been along side better eating. Too many variables to account for to say for sure, but it's gotta be good!! And all the research says the more muscle the higher the metabolism and subsequent fat burning ability.
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"