A support arrangement 1 and corresponding method for supporting a user in a seated invalid appliance 2 (for example a wheelchair) comprises a support member 3 and at least one reconfigurable connection arrangement arranged to enable connection of the support member to the appliance (for example a frame 5 of the appliance) and the application of an adjustable tensile load to the support member. The connection arrangement may comprise a bridging element 6 configured to extend between the support member and the appliance, such as a clip or hook which may be S or C-shaped in cross section and which may pass through, hook around or be received with a portion of the support member. The arrangement may further comprise a load adjustment member permitting adjustment of the tensile load applied to the member, for example a screw with a threaded shaft 7 arranged to pass through a portion of the appliance with a stop or nut (9, Fig 4) threaded onto its end.
