Four Stair Ascend Test Functional Test

**Semantic type:** Intellectual Product

**Definition:** A timed function test, one of a series of exercise testing modalities that were initially introduced in the 1960s, that measures functional mobility by assessing the time taken and techniques used to climb four standard-size stairs.

**Synonyms:** - 4 Stair Ascend - 4-STAIR ASCEND - A4STR1