MAR 17 1994

attention d:  SD5-94-513 1 3

Gideon Ariel, Ph.D.
Scientist
Universities Space Research Association
Ariel Dynamics
6 Alicante
Trabuco Canyon, CA 92679

Dear Dr. Ariel:

Thank you for delivering the second generation Resistive Exercise Dynamometer RED. This is a remarkable design with the potential for an enormous positive impact on How astronauts exercise in space. The potential for modifying the RED such that it becomes a stair stepper or a rower is especially ingenious. Please extend my congratulations to Mr. Phill Harmon and his staff for a truly superb effort !

In addition, the potential use of the RED as a dynamometer to measure skeletal muscle performance during space flight missions will be a major technological breakthrough. This option will provide NASA the capability to monitor skeletal muscle strength changes while on orbit. Knowledge of these changes will be a major enhancement that will enable appropriate space flight exercise countermeasures to maintain muscle performance.

Sincerely,


Michael C. Greenisen, Ph.D.
Manager, Exercise Countermeasures Project

Project for the Design of the Exercise Machine on the Space Station  (1986)