Arm strength diagnostics

With the aid of a three-dimensional measuring pressure plate embedded in the floor (type 9281 Kistler, Winterthur), it is possible to determine the characteristic values of the maximum and rapid strength capacity for arm traction under isometric working conditions. A holder for a dumbbell bar is attached to the measuring pressure plate so that the test subjects can exert tensile forces on the force sensors located in the plate. The charge displacements generated in the piezo force sensors(KISTLER, Winterthur) are fed to an A/D converter card via charge amplifiers and evaluated using a special computer program.
The support heights of the test subjects are selected according to arm length so that there is an arm flexion of around 20 degrees during the isometric measurement. The test subject's task is to respond to a signal from the experimenter by exerting as much force as possible from a relaxed arm position. The greatest force amplitude (maximum force) and the greatest gradient (explosive force) of the force-time curve are recorded as characteristic values of maximum and rapid force behavior.

The measurements are suitable for people who require a high maximum and high-speed strength capacity of the arm flexor muscles (e.g. rowing) in sporting competitions.