Avtor/Urednik		Istenič, Rok; Holobar, Aleš; Merletti, Roberto; Zazula, Damjan
Naslov		EMG based muscle force estimation using motor unit twitch model and convolution kernel compensation
Tip		članek
Vir		In: Jarm T, Kramar P, Zupanič A, editors. Medicon 2007. IFMBE proceedings from the 11th Mediterranean conference on medical and biological enginering and computing; 2007 Jun 26-30; Ljubljana. New York: Springer,
Leto izdaje		2007
Obseg		str. 114-7
Jezik		eng
Abstrakt		In this paper we introduce a new method for muscle force estimation from multi-channel surface electro-myograms. The method combines a motor unit twitch model with motor unit innervation pulse trains, which are estimated from multi-channel surface electromyograms. The motor unit twitches are then aligned to the innervation pulse trains and summed up to obtain the total muscle force. The method was tested on real surface EMG signals acquired during force ramp contractions of abductor pollicis brevis muscle in 8 male subjects. With 22 +/- 5 (mean :i: std. dev.) motor units identified per subject, the force estimation error of our method was 16 +/- 4 % RMS. These results were compared to the method which uses the EMG amplitude processing to estimate muscle force. The results of our new concept proved to be completely comparable to those of EMG amplitude processing.