The invention concerns an instrumented garment (1) comprising an elastic woven fabric (2) comprising: - non-conductive elastic threads arranged both in the warp direction and in the weft direction, and； - at least one conductive elastic thread intended to form a bus for transmitting at least one electric signal originating from a sensor (5) sensitive to a physiological and/or actimetric characteristic of the wearer of the garment (1), the at least one conductive elastic thread being positioned only in the weft direction of the fabric (2)； said garment (1) being characterised in that said at least one conductive elastic thread is arranged in a protective sheath (6), said sheath (6) being formed by selectively weaving the non-conductive elastic threads arranged in the warp direction so as to form two superposed and locally separate parallel fabric layers.
