Analysis of Anthropometrics and Mechanomyography Signals as Forearm Flexion, Pronation and Supination Torque Predictors

The aim of this study was to analyze anthropometrics and mechanomyography (MMG) signals as forearm flexion, pronation and supination torque predictors. Twenty-five young, healthy, male participants performed the isometric forearm flexion, pronation and supination tasks from 20 to 100% maximal voluntary contraction (MVC) maintaining right angle at elbow joint. Nine anthropometric measures and MMG signals from biceps brachii (BB), brachialis (BRA) and brachioradialis (BRD) muscles recorded using triaxial accelerometers were correlated with torque values. Significant positive correlations were found for arm circumference (CA) and MMG root mean square (RMS) values with flexion torque at five submaximal to maximal MVC levels. Flexion torque might be predicted using arm circumference (r = 0.426–0.557), a pseudo for muscle size and MMG RMS (r = 0.404–0.470), an indication of muscle activation.