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. Author manuscript; available in PMC: 2015 Feb 3.
Published in final edited form as: J Orthop Res. 2014 Jul 8;32(10):1305–1310. doi: 10.1002/jor.22678

Figure 1.

Figure 1

Trunk Stability test: The participant first sits on a Swiss ball with their ankle in a neutral position, their knee flexed to 90 degrees and their hips flexed to 90 degrees. They then cross their arms and lift one foot slightly up and forward. After a practice test with the eyes open the participant closes their eyes and repeats the test. Breaking from this position is recorded as an error if one of the 6 following deviations was noted: Lifted foot touches the ground, they reach for the table\wall\chair, their planted foot shifts, the arms come uncrossed (but do not touch the table), they rest the lifted knee against the planted leg, or they open their eyes. To assist with the participant regaining stability if they lost balance two solid objects were placed on either side of them within reaching distance, these objects could include chairs, tables or a wall.