Isokinetic work simulation for the analysis and practice of the complex motion patterns of working environments, sports or activities of daily living (ADL).The isokinetic CON-TREX® WS was developed to imitate motions of working environments, sports and everyday domestic life. In order to be able to follow the unique and often extremely complex patterns of movement, the height of the dynamometer can be electronically adjusted from down close to the ground to up over the patient‘s head. For realistic simulation of unusual movements the CON-TREX® WS can be rotated and swivelled. The possibility of reproducible assessment of work capacity is thus provided. Various movements from the everyday life of a craftsman (such as screwing, lifting objects, butting levers or sawing) can be simulated and trained. In addition to preparing for difficult working conditions (such as working overhead), CON-TREX® WS can be used to compose a specific and highly effective muscular workout. In practice, a minimum working area of only 2 x 2 meters is sufficient.