Publication at First Faculty of Medicine, Faculty of Physical Education and Sport |
2015
Abstract
The goal of the study was to investigate the relation between muscle fatigue and changes in EMG parameters (increase in amplitude and decrease in frequency parameters) during dynamic contraction in legpress. 9 volunteers (active athletes) performed repetitive legpress lifts with 75% of 1RM till refusal. MVC procedures preceded the fatigue protocol.
Knee extensors aktivity was monitored by surface EMG (2000 Hz). The bandpass filtered signal was analyzed with FFT in Matlab.
The results confirmed the hypothesis, that increase in amplitude and decrease in frequency parameters were observed.