Perform a total of six 20 second trials using three different stances (double, single, tandem), each one used with two different surfaces (firm, foam)
Recorded errors:
Hands lifted off iliac crests
Opening eyes
Step, stumble, or fall
Moving into >30 degrees hip flexion or abduction
Remaining out of testing position for >5 seconds
Credit: Mathew Gfeller Sport-Related TBI Research Center, UNC-Chapel Hill. Reproduced with permission from Kevin M. Guskiewicz, PhD, ATC, FACSM, FNATA.