"A bout 12 months out on your way around Mars," remarked physiologist Arthur H. Smith, PhD, leaning back in the little office, "is the wrong time to find out that there is an effect of accelerative forces on biological function."
To learn more about prolonged hypergravity exposure, Dr. Smith and colleagues are whirling chickens around, sometimes for months at a time, in a centrifuge at the Chronic Acceleration Research Laboratory on the University of California campus near Davis. Data to date indicate:
phying as much as five to seven times normal, but no change in paired antagonist muscles;
Increase in relative skeletal size, but with the non-loadbearing humerus, for example, showing as large an increase as the loadbearing femur;
Antigravity muscles hypertro-