AMBULATORY DEVICE FOR SURFACE EMG RECORDINGS

The principles of electromyographic (EMG) analysis can be divided into the following groups: signal or motor unit shape analysis, amplitude analysis, multi-channel or successive time difference analysis, signal frequency composition analysis, change of frequency time based analys is based on simultaneous amplitude or frequency based analysis or conc entric and excentric work based shape and amplitude ratio analysis. Th e aim of this paper is to present an ambulatory portable device for su rface EMG analysing both for integrated EMG and for spectral analysis. The reliability of surface EMG recordings have established. The recen t new technology gets a possibility to measure by reliable way surface EMG on-line during exercise, rehabilitation or occupational condition s. Portable EMG measurement unit and analysing program seems to be sui table for documentation of the response of rehabilitation programs, ef fects of physiotherapy, analysing the muscle balance and activity of s portsman and for documentation of occupational health problems. Automa tic interpretation and wide data base far patient data makes the syste m useful in daily practice.