The invention relates to a system for collecting physiological data comprising a data collection device comprising at least one sensor module so configured as to capture physiological measurements, and a monitoring system so configured as to retrieve and transmit the physiological measurements; the data collection device comprising a garment wherein the sensor module and the monitoring system are integrated, with the monitoring system comprising at least two housings connected together mechanically in a flexible manner so as to conform to the shape of a part of the body whereon the monitoring system is able to be positioned; at least one flexible connecting member for mechanically connecting the at least two housings; a data acquisition and wireless communication module positioned in one of the two housings; a motion detection module installed in one of the two housings.