An apparatus for the detection of electromyographic signals in a moving subject includes signal sensors (S) and movement sensors (F) applied to the subject, each including elements (1) for the analogical picking-up of signals, an amplifier (A) of the detected analogical signals, an analogical/digital converter (A/D) of the amplified signals, a low-consumption microcontroller (2) with independent power supply, for controlling the flow of digital signals to a radio-transmitter (3) apt to sequentially issue the digital signals to a basic unit (U). The basic unit (U) includes a radio-receiver apt to receive the signals coming from the signal sensors (S) and movement sensors (F), a digital/analogical converter, a microcontroller (MCU) and a USB-standard, serial interface unit, the unit thereby being apt to transmit the signals, in digital and/or analogical format, to external devices for signal interpretation and display.