standard version of the Motorische. Leistungsserie (MLS) (Wiener Testsystem, Schuhfried GmbH, Mdling, Austria) described by Schoppe [ 8 ] and Hamster [ 7 ]. This test consists of a working platform with different reamings, pins and electrical contacts and is connected to a personal computer with the corresponding software for test analysis (Figure 1 ). The standard psychomotor skill test [ 8 ] is composed of 21 subtests performed with each, the dominant and the non-dominant, hand. Additionally, five of these subtests are carried out with both hands simultaneously. The results of all 21 subtests are then evaluated for each, the dominant and the non-dominant, upper extremity separately and are correlated to normative values from healthy individuals by the software included in the test kit. Figure 1. Motorische Leistungserie (MLS) . Illustration of the Motorische Leistungsserie (MLS) consisting of a working platform with long ( a ) and short ( b ) pins as well as electrical contacts to test tapping frequency ( e + c ), aiming and steadiness ( e + f ) and line tracking ability ( e + d ). The platform is connected to a personal computer with the corresponding software for test analysis. Force measurements The load on the lower extremity was measured with the Pedar Mobile system (version 8.2; Novel GmbH, Munich, Germany) (Figure 2 ). The matrix insoles of this portable device contain 99 capacitance sensors to detect and measure vertical forces during walking. Calibration of the insoles was carried out with