Stork Balance Pro
Precision Static Balance & Bilateral Asymmetry Analysis
Use the timer to measure endurance
and click Analyze to generate results
Stork Balance Stand Test Protocol
The Stork Balance Stand Test is a standardized assessment of static balance. It requires the participant to maintain a single-leg stance while the non-supporting foot is placed against the inside of the supporting knee.
Failure Criteria (Stop Clock If):
- The hands come off the hips.
- The supporting foot swivels or moves from its initial position.
- The non-supporting foot loses contact with the knee.
- The heel of the supporting foot touches the floor (if testing on toes).
Normative Data (General Population)
| Rating | Time (Seconds) |
|---|---|
| Excellent | > 50s |
| Good | 40 - 50s |
| Average | 25 - 39s |
| Fair | 10 - 24s |
| Poor | < 10s |
Expert FAQs
Is the Stork Test done with eyes open or closed?
The standard Stork Balance Test is performed with eyes open. Performing it with eyes closed significantly increases the difficulty and tests the vestibular and proprioceptive systems more aggressively.
What is the significance of a side-to-side difference?
A difference of more than **15-20%** between the left and right legs is considered a significant asymmetry, often predisposing athletes to ankle and knee injuries.
Clinical Bibliography
- 1. Johnson BL, Nelson JK. Practical Measurements for Evaluation in PE. 1979.
- 2. Emery CA. Standing balance measurements in sports medicine. 2003.
CLINICAL RESOURCE