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On the basis of data collected from 123 untrained males, 110 un­trained females and 48 arm-trained athletes, the relationship between the param­eters of the force-velocity curve of the arm flexion movement [(maximal static moment (Mo), maximal angular velocity (ωo) and maximal power (Pu)] and simply obtainable body measures was investigated. For that purpose a mechanical model of the arm, in which the arm flexors were represented by a flexor equivalent, was used. In general, correlations between the curve parameters and body dimensions were moderate for Mo and Po and low for ωo, and differences in the level of the curve parameters between the respective groups could only partly be explained on the basis of body dimensions. It is concluded that the methods used give only limited opportunity to standardize the curve parameters.