Therapeutic exercise device

A theraputic exercise device comprising two closed containers formed from flexible, substantially inextensible sheet material and having substantially the same shape, said containers being located one above the other with no fluid communication between said two containers;

• the upper one of said two containers being shaped to permit compression of same by at least two portions of a human body, being filled with fluid to partially pressurise the interior of said upper container with the pressure therein being less than that required to make said upper container rigid;
• said upper container being formed into at least two compartments by partions;
• and each of said compartments being in direct fluid communication with at least one other of said compartments via at least one passage to restrict the flow of fluid between said compartments in response to an external force applied to at least one of said compartments by movement of one of said human body portions to reduce the volume of said one compartment, whereby the remainder of said compartments expand in volume thereby exerting a movement inducing force on the other ones of said human body portions.