opstaantijd
Opstaantijd is a Dutch term that describes the time required to move from a seated or lowered position to an upright standing position. It is used as a functional measure in fields such as ergonomics, rehabilitation, sports science, and gerontology to quantify how quickly a person can rise to full standing.
Etymologically, the word combines op- (up or up-to), staan (to stand), and tijd (time), capturing the duration
In clinical and research settings, opstaantijd is closely related to assessments of functional mobility and lower-body
See also: sit-to-stand test, chair-rise test, Timed Up and Go test, functional mobility.