Abstract: The invention concerns a panel with a body in the form of a plate with a front face for receiving a load, and at least one elongate metal profile for flexurally stiffening the body. The elongate metal profile substantially extends from one edge to another opposing edge of the body. the elongate metal profile being formed by a flat steel sheet strip bent along its length along at least one bend line to maximise its moment of inertia along its length, the steel of the sheet having a yield strength higher than 400 MPa, and the strip being bent in the same direction at a right angle along two bend lines.