[Activities of the leg muscles in daily life]

This article is the result of an electromyographic analysis of the leg and thigh muscles in a standing position, during walking, pedalling on an ergocycle and during movements when venous return is activated. In a standing position, the leg muscles show no intermittent activity; while standing on the tip of the toes, the activity of the calf muscles is almost maximum; during walking and pedalling, the muscles are contracted intermittently and alternatively but also with non negligible periods of contraction.