One Giant Leap
A letter from Dr. David Warmflash MD:
A letter from Mark Dillard of Johnson Space Center:
A letter from Olympian Syque Caesar:
Space Shuttle Astronaut Kent Rominger said Gymnastronautics is "Next generation thinking to create a more dynamic and challenging art & sport"
There's potential in the private sector...
Especially considering Bigelow Aerospace's advances with the B330 Module (pictured below)
Photo credits to http://www.bigelowaerospace.com/b330/
Below is a draft of the motorbar in a B330 Module
These PDFs are early drafts of the gymnastronautics concept: