The method is based on measuring the variation of the ground reaction forces over the time for motion patterns close to typical every day movements (e.g. chair rise or jumps).
If the ground reaction forces are measured separately for left and right leg in addition body imbalances during the motions can be analysed.
[46] Based on this test (maximum relative power output of a jump as high as possible) Runge et al. and Schönau et al. defined reference values of a fit population in order to match the individual power output in relation to bodyweight, age and gender[14][31] Tsubaki[47][48] showed when using identical selection criteria as Runge that the relative Power of the Japanese population is identical with western European population which delimits the need for localized reference data.
Runge et al. also showed the interrelation between the measured individual power output and the neuromuscular caused fall risk.
[67][21][68] The standard Mechanography measurement devices as used in all referenced articles are the Leonardo Mechanograph™ systems supplied by Novotec Medical GmbH, Pforzheim, Germany.