Four Square Step Test (FSST)
What It Measures
The Four Square Step Test asks a person to step over low obstacles in every direction, as fast as they safely can. Four canes are laid flat on the floor in a cross, making four squares. The person steps into each square in sequence — forward, right, backward, left — then reverses and comes back the other way.
Both feet must land in every square, the person tries to keep facing forward throughout, and the score is simply the time in seconds. Two trials are done after a practice, and the faster is recorded. What it captures is dynamic balance under a real constraint: changing direction quickly while clearing something with the trailing foot, which is where many falls happen.
Further Reading
Additional Notes
Licensing Notes: Permission is granted on request rather than posted as blanket open terms. Equipment is a stopwatch and four canes.
Learn More: A time over 15 seconds identifies older adults at risk for multiple falls (sensitivity 85%, specificity 88%, positive predictive value 86%). The test is too demanding to perform with a walker, and someone who cannot complete it gets no time at all rather than a poor score — so a failure is itself the finding.