View Full Version : observable kinematic differences

David M Fortenbaugh
12-13-2005, 01:57 AM
Hello, everyone. I am working on some research involving sports movements and
being able to distinguish between two similar, yet distinct actions. Has anyone
come across literature (probably in the SVA/DVA field) that defines exactly how
much of an angle difference one can detect from a given distance. For instance,
if I am standing about 50 feet away, how large of a difference in, say, knee
flexion does there need to be between the two competing athletes in order for me
to notice the difference. My guess is somewhere around 15 to 20 degrees but
this is honestly just a guess. I think it would be a function of the viewing
distance and the size of the body parts, but so far I have not been able to
locate this information. Any and all help would be greatly appreciated. I wish
everyone a happy, healthy, and safe holiday season!

Dave Fortenbaugh, M.S.
Graduate Research Assistant
Biomechanics Laboratory
Deparment of Industrial Engineering
University of Miami