Objectives: This study presents a method of assessing muscle fatigue during endurance testing at 50% maximal voluntary contraction (MVC) using electromyography (EMG) information as indirect indices fatigability in the forearm muscles, namely, flexor digitorum superficialis (FDS); carpi ulnaris (FCU); extensor (ECU) and radialis brevis (ECRB)." (ECRB). Methods: A randomized comparative experimen...

The purpose of the study was to quantify the influence of selected motor unit properties and patterns of activity on amplitude cancellation in the simulated surface electromyogram (EMG). The study involved computer simulations of a motor unit population with physiologically defined recruitment and rate coding characteristics that activated muscle fibers whose potentials were recorded on the ski...

An important aspect of mechanical ventilation is the recognition and quantification spontaneous respiratory effort. However, a measurement flows pressures often used for this purpose prone to error. A promising alternative detect diaphragmatic contractions, directly. method recently proposed acquire diaphragm electromyography (EMG) signals using surface electrodes. limited by disturbances elect...

Appropriate cancellation of the baseline fluctuation (BLF) is an important issue when recording EMG signals as it may degrade signal quality and distort qualitative and quantitative analysis. We present two techniques, statistical and filter-design approach for cancellation of the BLF based on several signal processing techniques used sequentially. The methodology is to estimate the spectral co...

In this work, the signal-force relation is investigated by analyzing the EMG signals measured from the muscles under the effect of forces. Surface EMG signals are recorded during the isometric and anisometric contraction of four muscles with different levels of forces applied to the arm. Higher order frequency moments calculated from the power spectrum of signals are used as characterizing feat...