Single-leg balance, how long you can stand on one leg unsupported with your eyes open, is an unusually direct link between everyday function and longevity. In a study of 1,702 adults aged 51 to 75, the inability to hold it for ten seconds was associated with a near doubling of all-cause mortality risk over the following decade, independent of age, sex and a range of clinical variables. It takes ten seconds and needs nothing at all.
- In 1,702 adults aged 51 to 75, those who could not hold a 10-second single-leg stance had a death rate of 17.5% over seven years, against 4.6% for those who could.
- The association held after adjusting for age, sex, body mass and clinical variables, so it is not simply measuring how old you are.
- One in five participants failed. Among those aged 71 to 75 it was around 54%.
- Balance declines sharply from the mid-fifties, which is what makes a test this simple worth doing at all.
Why a single-leg stance tests anything
Holding a single-leg stance looks like doing nothing. It is actually a continuous correction loop: your inner ear reports head position, your eyes report the horizon, receptors in the joints and soles report load and angle, and the nervous system integrates all three to fire small stabilising corrections many times a second.
Any meaningful decline in that chain shows up as wobble and then as failure. That is why a ten-second hold carries information: it is a functional test of the vestibular system, proprioception, ankle and hip power and neural processing speed at once, and none of those are things a blood panel reports.
Two of the functional markers on this site trace to one research group. Araujo CG, lead author of the ten-second stance study, is also lead author of the sitting-rising test research, and both come from the same exercise-medicine clinic cohort in Rio de Janeiro. A reader assessing how much independent evidence sits behind these recommendations should know that.
What the single-leg balance research found
The reference study followed 1,702 adults aged 51 to 75 with a stable gait, for a median of seven years. Around one in five could not complete the ten-second stance at baseline.
Over follow-up, 7.2% of the group died. Split by test result, that was 4.6% among those who passed and 17.5% among those who failed. The survival curves separated clearly, and the difference held after adjusting for age, sex, body mass index and clinical variables, which matters because the obvious objection is that this is just a proxy for being older.
Failure rose steeply with age. Among participants aged 71 to 75, roughly 54% could not complete it.
The authors were explicit about the limits: history of recent falls and physical activity levels were not controlled for, and this is a single cohort rather than a pooled analysis. It is a strong signal from one well-conducted study, not a settled body of evidence like gait speed.
How to test your single-leg balance
The protocol is specific, and the specifics matter if you want your result to mean what the study result meant.
- Stand barefoot or in flat shoes, near a wall or worktop you could grab, but not touching it.
- Place the front of one foot against the back of the opposite calf, so the raised leg is tucked behind rather than held out.
- Keep your arms at your sides and your eyes open, looking at a fixed point ahead.
- Time ten seconds. Hopping, grabbing support or putting the foot down ends the attempt.
- You get three attempts. Completing any one of them is a pass.
Do it where a stumble costs you nothing. The test is safe, but the population most likely to fail is also the population least able to absorb a fall.
What actually improves single-leg balance
Balance responds faster than almost any other trainable quality, often within weeks, because much of the early gain is neural rather than structural.
- Practise the position. Single-leg stands while the kettle boils. Unglamorous and effective, and the reason it gets recommended so often is that adherence is high when a habit costs nothing.
- Remove vision. Eyes closed is dramatically harder and trains the vestibular and proprioceptive contribution directly.
- Build ankle and hip power. Balance corrections are fast, forceful and small. Loaded single-leg work such as split squats and step-ups builds the machinery that makes them.
- Check your vision and inner ear. If balance has deteriorated noticeably and quickly, that is a reason to see someone rather than to train harder.
What single-leg balance does not tell you
- One cohort, not a pooled analysis. 1,702 people in a single Brazilian cohort. That is a meaningful study, not the weight of evidence behind grip strength or gait speed.
- Passing is a floor, not a result. Ten seconds was chosen as a screening threshold. Clearing it says you are not in the high-risk group, not that your balance is good.
- It is associational. Nobody has shown that training your way past the threshold changes your risk, only that people above it fared better.
- It cannot say why you failed. Ankle weakness, an inner-ear problem, medication side effects and deconditioning all present the same way.
Where single-leg balance fits in a plan
Single-leg balance counts toward both healthspan and lifespan in Longevity Coach IQ’s scoring, because the evidence supports both readings: it is a direct measure of a functional capacity you need to stay independent, and it predicted all-cause mortality in its own cited research.
Practically, it is the cheapest marker on the list. No equipment, ten seconds, repeatable weekly. If you are going to track one functional measure that costs nothing, this and gait speed are the two worth having.
Sources
Key references behind this entry.
- Araujo CG, de Souza e Silva CG, Laukkanen JA, et al. Successful 10-second one-legged stance performance predicts survival in middle-aged and older individuals. British Journal of Sports Medicine, 2022;56(17):975-980. 1,702 adults aged 51 to 75, median follow-up seven years, mortality 4.6% versus 17.5% by test result.
Frequently asked questions
How long should I be able to stand on one leg?
Ten seconds is the threshold the research used, and it is deliberately low. It is not a fitness target, it is a screening line: the study divided people into those who could and could not hold it, and found a large difference in survival between the two groups. Comfortably clearing ten seconds means you passed a floor, not that your balance is good.
What did the study actually find?
In 1,702 adults aged 51 to 75, followed for a median of seven years, 17.5% of those who failed the test had died, against 4.6% of those who passed. The association survived adjustment for age, sex, body mass index and clinical variables, which is what makes it more than a restatement of age.
Does poor balance cause early death?
No, and the researchers do not claim it. Balance is a downstream output of muscle power, joint proprioception, vision, inner-ear function and neural processing speed. When it fails, something upstream has usually declined. The test is a cheap way of detecting that, not the cause of anything.
Does it matter which leg?
Use whichever you prefer and stay consistent between tests, since most people are noticeably better on one side. A large asymmetry between legs is worth attention in its own right, and often points at an old injury that never fully resolved.
Can I train this?
Yes, and it responds quickly. Standing on one leg while brushing your teeth is the standard suggestion because it works and it is free. Progress by closing your eyes, which removes visual input and makes the task substantially harder, or by standing on a softer surface.
Is this the same as a falls risk test?
They overlap but are not the same. Balance tests are used in falls assessment, and falls are a leading cause of losing independence after 65. What this particular study added was that the ten-second stance predicted all-cause mortality specifically, beyond falls, which is a broader claim than falls risk alone.