An electrically-powered device intended to measure muscle fatigue of the quadriceps based on the force of muscle contraction under: 1) noninvasive electrical stimulation at different electrical impluse frequencies (long-term peripheral muscle fatigue); and 2) voluntary exertion before and after exercise (global muscle fatigue). It is in the form of a seat unit with an integrated electrical stimulator, a shin rest with an integrated dynamometer (force sensor), and electrode leads/cables connection points. Muscle fatigue data is typically based on the ratio of force output under different conditions and is analysed and viewed on a connected off-the-shelf computer (not included).