CONTEXT

The Star Excursion Balance Test (SEBT) is composed of 8 reaching directions that are potentially measuring the same functional component, leading to the suggestion that the number of reach directions could be reduced without compromising the assessment of dynamic postural control.

OBJECTIVE

To determine whether the relationship of stance-leg angular displacement on normalized reach distance is a source of dynamic-postural-control measurement redundancy.

DESIGN

Single-session within-subjects design.

SETTING

Athletic training research laboratory.

PARTICIPANTS

10 women and 10 men.

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Normalized reach distance and angular displacement at the knee and hip.

RESULTS

Stepwise regression revealed that hip flexion and knee flexion, separately and in combination, accounted for 62% to 95% of the variance in reach distances.

CONCLUSION

Similarity in lower extremity function could account for the previously observed measurement redundancy in the SEBT.