http://www.msnbc.msn.com/id/19070477/from/RS.2/Terrible T. Rex was a slowpokeResearch indicates leg muscles weren’t big enough for fast running
The model results, detailed in the June 21 issue of the Journal of Theoretical Biology, also showed that T. rex would have had considerable inertia preventing it from turning quickly; a 45-degree turn would have taken one or two seconds — far longer than for a human.
These calculations lend further support to previous research indicating that the large tyrannosaurs could run no faster than 25 mph (and certainly not the 45 mph seen in
some movies), because its leg muscles weren’t big enough for fast running.
“We now know that a T. rex would have been front heavy, turned slowly and could manage no more than a leisurely jog,” said team leader John Hutchinson of the Royal Veterinary College.
