MODIFIED COLLINS PEDAL-MODE ERGOMETER: DEVELOPMENT AND MEDICAL TESTS

摘要

Modifications made to the Collins Pedal-Mode Ergometer by NEDU and Battelle from 1971 to 1975 are described, along with a discussion of two predecessor ergometers used by NEDU from the mid 1950's to roughly 1970. Modifications to the commercially available Collins ergometer were performed in order to make the unit watertight and suitable for use at high ambient pressures. This work was accomplished in two phases: first, by NEDU for 1971 to 1972 and later by Battelle from 1973 to 1975. Battelle's final design featured a completely redesigned housing, Bal-Seals and a stainless steel shaft. Medical test conducted with the prototype and final designs are summarized, highlighting the importance of a standard, reliable ergometer in imposing specific diver workloads for a wide array of NEDU equipment and physiological tests. Information on the ergometer control unit, bicycle frames and calibration unit is also provided. (Author)