Development of an Elliptical Perturbation System that provides unexpected perturbations during elliptical walking (the EPES system).

Only two young adults were tested, not older adults with lower-limb osteoarthritis. The pilot measured software detection of movements on the device, not clinical outcomes such as falls, walking ability, or balance test scores. The authors state that it is unknown whether EPES training could prevent falls in older persons. The authors note that perturbations during elliptical walking may not be specific enough to real-life balance loss situations. The device is a prototype, not in serial production, and the stated price excludes assembly and testing.

Do not conclude that EPES training prevents falls or improves balance in older adults. The only tested people were two young adults, and the reported outcome was whether software detected movements on the device, not clinical function.