Test-Retest Reliability and Practice Effects of the Stability Evaluation Test.
Richelle M Williams1, Matthew A Corvo2, Kenneth C Lam3,4
1Research Support, A.T Still University, Mesa AZ.
Journal of Sport Rehabilitation
|January 18, 2017
Summary
The Stability Evaluation Test (SET) demonstrates good to excellent reliability for assessing postural control in healthy adults. A familiarization session is recommended before data collection due to observed practice effects.
Area of Science:
- Neurology
- Biomechanics
- Sports Medicine
Background:
- Postural control is critical for concussion evaluation.
- The Stability Evaluation Test (SET) objectively measures sway velocity using a force platform.
Purpose of the Study:
- To evaluate the test-retest reliability of the SET protocol.
- To identify practice effects associated with the SET.
Main Methods:
- 50 healthy adults completed 4 trials of the SET, each with six 20-second balance tests (eyes closed) on firm and foam surfaces.
- Conditions included double-leg, single-leg, and tandem stances.
- Sway velocity was the primary outcome measure; reliability was assessed using intraclass correlation coefficients (ICCs).
Main Results:
- Good to excellent reliability (ICCs ranging from .75 to .93) was found for all SET conditions and the composite score.
- Significant practice effects were observed in single-leg firm, double-leg foam, single-leg foam, tandem foam, and composite scores (P < .05).
Conclusions:
- The SET exhibits strong reliability for assessing postural control in healthy individuals.
- A familiarization session is advised to mitigate practice effects before recording data.
- Future research should investigate the SET's utility in injured populations to establish meaningful change scores.
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