Given a wheelbarrow that has two wheels side by side (as opposed the normal
"unicycle" ones), with a wraparound handle that is parallel with the axle
rather than the normal separate handles that are each perpendicular to the
axle...

Is it better to pull or push a wheelbarrow, assuming that it is loaded so as
much of the weight is over the axle, with a little more on the side closer
to the handle. By "pull" I mean walking forwards, towing the barrow behind
me with hands level with buttocks, not facing the barrow and walking
backwards!