This publication discloses a support harness, which can be used particularly to support a woman in labor during childbirth, but also, for example, to increase the support and comfort of persons and patients using a wheelchair, and for similar purposes. An attenuator (5, 7, 10, 14), which is based on the friction between two belts, is fitted, between the attachment elements (9-13) and the shoulder straps (3, 4), to the support harness, which comprises attachment elements (9-13), for attaching to a chair, birthing frame, or other support point, and two shoulder straps (3, 4), which are placed around the shoulders of the person being supported.