Functional test
Single-leg balance
One-leg stand · Unipedal stance
How long you can stand on one leg with eyes open — a 30-second cliff-edge in cohort data.
What it measures
Time held on a single leg, eyes open, arms relaxed, before having to put the lifted foot down or grab support. Best of three trials. Captures lower-body strength, proprioception, vestibular function, and visual integration.
Reference context
2 guideline sources
Eyes-closed variant is much more difficult and not standardised across cohorts. Use eyes-open for trend tracking.
Population context — consult guideline targets below
Mechanism
Why moving this marker matters
Balance integrates multiple systems and is acutely sensitive to age-related decline. Araujo 2022 (Br J Sports Med, n=1,702 adults aged 51–75) showed that inability to stand on one leg for 10 seconds was associated with an 84% increased risk of all-cause death over 7 years.
Guideline targets
What major guidelines recommend
Araujo 2022 (mortality threshold)
≥10 seconds — associated with substantially lower 7-year mortality
Population norms
Healthy adults under 60 typically hold ≥30 seconds eyes-open; declines steeply with age.
How to measure
The test, where to get it, when to repeat
Method
Stand on one leg, eyes open, hands on hips or relaxed. Time from foot lift until foot touches down or support is needed. Three trials per leg, take the best.
Where
Free at home; included in many physiotherapy and primary-care batteries.
Typical cost
Free.
Fasting
Not required
When to test
STEADI (CDC)
65+Part of the falls risk assessment in adults 65+.
Araujo 2022
51+The 10-second test is a useful single-point marker in adults 51+.
How to test
Doing this test
This is a self-test — no equipment needed. A timer or tape measure is usually enough. Your GP can confirm the protocol if you want validation.
Context
Reading the numbers
Eyes-closed variant is much more difficult and not standardised across cohorts. Use eyes-open for trend tracking.
Caveats
Acute inner-ear conditions, lower-limb pain, or medication-induced dizziness substantially affect single readings.
See also
Related markers
Take to your physician
Worth discussing
- If unable to hold 10 seconds, whether balance training and falls-risk evaluation are warranted.
- Whether vestibular or visual contributors should be investigated.
Sources
Cited literature
Edited by Carl Pöhl, MD · Healicus editorial
Last reviewed May 2026
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