An exercise support machine, for at least partially relieving the weight of a user during exercise, comprising a pelvic support (21), arranged to support the user via a pelvic region; a biasing member (13), arranged to bias the pelvic support in a biasing direction away from the ground, thus at least partially relieving the weight of the user; and a moveable mounting arrangement (19) via which the pelvic support is mounted on the biasing member. The pelvic support (21) is arranged for pivotal movement about a yaw axis, which extends in the biasing direction, and the pelvic support (21) is arranged for pivotal movement about a roll axis which is perpendicular to the yaw axis; and the moveable mounting arrangement provides a freedom of movement to the pelvic support (21) such that the pelvic support (21) is able to pivot about the yaw axis and the moveable mounting arrangement 19 provides a freedom of movement to the pelvic support (21) such that the pelvic support is able to pivot about the roll axis, thus allowing the user to walk and/or run with a normal gait whilst supported by the pelvic support. The moveable mounting arrangement (19) comprises a plurality of linkages which provide said freedoms of movement to the pelvic support such that it is able to pivot about the yaw axis and the roll axis.