Mobility

Origin - early 15c., "capacity for motion," from Old French mobilité "changeableness, inconsistency, fickleness," from Latin mobilitatem (nominative mobilitas) "activity, speed," figuratively "changeableness, fickleness, inconstancy" (Etymology Online)

Example: Release techniques, joint mobilizations, stretching and instrument assisted soft tissue mobilizations are all techniques designed to increase mobility, usually measured as the range of motion allowed at a joint. See also: hypermobility and hypomobility