In a gym there are not many pieces of equipment that a person with a disability can easily use. This client is looking for a way to adapt a treadmill in the gym so that it can be used for walking backwards for physical therapy. The existing treadmills have a bar across the front which make it very uncomfortable to lean on while walking backwards.

Your task would be to adapt an existing treadmill machine so that someone can walk backwards comfortably and be able to exercise with it safely. It must be intuitive to install, easy to maintain and compatible with different treadmills. It must be easily removable from the machine and easy to store. It should also be easy to clean like other gym equipment and be adjustable for different people.