Fourputt
Head Rules Official
Do you have a link to that study?
That is fascinating to me and I would like to read it.
EDIT: I am guessing you mean this one.
http://www.thewalkinggolfer.com/benefits_of_walking/physical.html
That looks like the one. I first saw this about a year ago, and I don't remember the details, only the proportions of calories used. I was surprised to find that riding still used a fair amount energy. I guess that you are still doing some walking, and you still hit the ball as many times (in my case these days, usually too many).