BBS. The BBS is the most widely
used and validated instrument for
assessing balance performance in
neurological conditions.'^ It is composed
of 14 items that require subjects
to maintain positions of varying
difficulty and perform specific tasks
such as standing and sitting unsupported,
transfers (sit to stand and
stand to sit), turn to look over shoulders,
pick up an object from the
floor, turn 360° and place alternate
feet on a stool. Scoring is based on
the subject's ability to perform the
14 tasks independently and/or meet
certain time or distance requirements.
Each item is scored on a
5-point ordinal scale ranging from 0
(unable to perform) to 4 (normal performance)
so that the aggregate
score ranges from 0 to 56.