ISAW was developed as a concise, yet comprehensive test of balance and gait. It measures 4 different systems underlying mobility: postural sway in stance, anticipatory postural control during step initiation, gait and turning. Subjects are asked to stand quietly for 30 seconds and then asked to walk at their comfortable speed for 7 meters, turn 180° and walk back to their staring place. The system automatically quantifies over 90 metrics of mobility from this simple, quick test.
The ISAW plugin for Mobility Lab™ is the most comprehensive gait and balance test offered by APDM. It's like a force plate and video motion capture system bundled into one cost-effective and reliable system. Set up and break down time take less than 5 minutes, while each test takes less than 1 minute, so 6-8 subjects can be comfortably assessed per hour in any location.
The ISAW test results in 46 measures of dynamic mobility, including: cadence, stride velocity, stride length, trunk rotation, turning duration and arm swing velocity, 7 measures of step initiation, including amplitude, leg ROM, and latency, and 38 measures of postural sway, including way area, velocity, frequency and jerkiness, totaling over 90 measurements of gait, turning, anticipatory postural control and posture in one simple test.
The subject begins by standing comfortably behind the tape. After 30 sec of recording quiet stance, subjects are instructed to walk 7 meters, make a 180° turn behind the tape, and return back to where they started. Repeat protocol two more times. See video for an example.
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