An improved lever arm for an electric dynamometer

tevep am for an electric dynamometer. J. Appl. Physiol. 27(6): 906. 1969,-A special lever arm made of two parallel bars was de-signed for testing muscle strength. One bar has strain gauges built into it. With this lever arm one can get accurate measurements of maximum torque developed by muscIe groups regardless of where the force is applied. It eIiminates repetitive measurements of the distance at which the force is applied. The tracings on an oscillo-graph are recorded in foot-pounds of torque. lever arm for a dynamometer; muscle torque test; forearm muscle test IN 1966 the junior author developed and built a special dynamom-eter for testing the strength of forearm flexors and extensors, in which the load was provided by an electric motor (I). Four strain gauges were incorporated at E in the lever arm (D) and the force exerted was automatically recorded on an oscillograph (see Fig. 1)