Investigation into the functional characteristic of m. quadriceps femoris in man with "stimulation mechanography".

The force and positive slope under isometric conditions produced by electrically evoked contractions of the m. quadriceps femoris in man were measured during two days without physical work and on two days with different kind of exercise. The relationship between force and slope is described by a logarithmic function. The changes after exercise were different in dependence of the kind of exercise.