Biomekanisk mätmetod och ergonomisk analys av träningsmaskiner
To get the maximal output of your exercise in gym machines, there are different factorsto be considered. For example the strength of the muscle varies dependent on the positionof the muscles. To get the best results of the exercise the load has to reduce and increaseat specific positions.This study was made in cooperation with Caretaker Scandinavia AB, a company forsales, marketing and development in health care. They are general agent for Nordic Gymwho works with manufacturing of equipment and machines for gym and fitness.The aim of this study was to generate a method of measurement to evaluate and controlthe biomechanics of Nordic Gym´s workout equipment. A protocol for an ergonomicanalysis on the equipment has also been elaborated.One of the methods to measure the biomechanics was to measure the torque through thewhole movement. The other method was electromyography (EMG). The EMGequipmentregisters electric signals that are generated in a working muscle, and makes itpossible to see when the maximum muscle activity achieves. The results of thosemeasurements will be compared to the muscles strengthprofile which describes how themuscle generates power in different positions throughout the movement.To measure the ergonomics an ergonomic protocol where produced, which was based onergonomics aspect, adapted to gym machines.The method of measurement where tested on Nordic Gym´s training machine 101SE legextension and Free Motion´s machine Leg Extension GZF18013 and this machines wherecontrolled and evaluated. Two test persons tried out the machines and the machineswhere analysed in an ergonomic and a biomechanical perspective. The result shows thatthe biomechanics of Nordic Gym´s machine where a bit better than the biomechanics ofFreeMotion´s machine. But in the both case the difference between the values of torque ismarginal, to improve the biomechanics insistence a bigger different should be necessaryto use. The ergonomic analyse of the machines showed that the ergonomics where goodand well planed. Both machines had some small ergonomic lacks, which can beimproved.