FICSIT (Frailty and Injuries: Cooperative Studies of Intervention Techniques)
Unintentionally coming to rest on ground, floor, or other lower level: excludes coming to rest against furniture, wall, or other structure.
Kellogg International Work Group
A fall is an event which results in a person coming to rest inadvertently on the ground. For certain purposes, such as research and prognosis, it would be desirable to exclude from the definition those falls resulting from loss of consciousness, onset of paralysis, an epileptic attack, or impact with a moving vehicle.
転倒において二重課題が注目され始めたのは1997年にLundinらが行った研究で、歩行中の高齢者に"What's your age??"と尋ねて、立ち止まったり、歩行速度が低下した者ではその先6ヶ月間における転倒率が有意に高くなるという報告がされてからである。そのテストはStops Walking When Talking testと呼ばれ、臨床的にも簡易的で有用である。