Functional Mobility Tests: TUG, 5 Times Sit-to-Stand, Functional Reach and More

The Functional Mobility Test Battery at a Glance

Here is how the six core tests compare. Together they measure strength, balance, gait, and balance margin, the four pillars of functional independence. Each line includes roughly how long the test takes to run, which matters when you are building a home battery.

Use our Timed Up and Go calculator, 5 Times Sit-to-Stand calculator, and functional reach calculator to score each test instantly, and the gait speed norms page to interpret your walking speed.

The Timed Up and Go (TUG)

The TUG is the most widely used single screen for functional mobility. You rise from a standard armchair, walk 3 meters, turn, walk back, and sit down, timed from start to finish. Podsiadlo and Richardson (1991) introduced the timed version and showed it correlates strongly with the Berg Balance Scale and with gait speed. It is a first-line test in the CDC's STEADI falls-prevention toolkit, which tells you how seriously clinicians treat it.

Setup matters more than people expect. Use an armless chair with a seat about 46 cm high, place its front edge exactly 3 meters from a marked line, and give the instruction to walk at your usual comfortable pace, not as fast as possible. The timer starts when the back leaves the chair and stops when the person is seated again. Walking aids are allowed, and one practice trial precedes the timed attempt.

Cutoffs and reference values

• Under 10 seconds: Normal, freely mobile.
• 10 to 20 seconds: Independent mobility with some impairment.
• Over 20 seconds: Assistance needed with transfers.
• Over 13.5 seconds: Elevated fall risk (Shumway-Cook 2000).

Bohannon (2006) put typical means at roughly 8 to 9 seconds for ages 60 to 69, 9 to 10 for 70 to 79, and 10 to 11 for 80 to 89. Run the full protocol and cutoffs on the Timed Up and Go tool page.

The 5 Times Sit-to-Stand

The 5 Times Sit-to-Stand times how long it takes to rise from a chair and sit back down five times with your arms crossed over your chest. It is the fastest validated proxy for lower-limb strength: the power you need for stairs, bathtubs, cars, and getting up from the floor. Each repetition is a full stand, and the arms stay crossed so the hands cannot help.

Use a chair with a seat height of roughly 43 to 46 cm, placed against a wall so it cannot slide. Sit with your back against the chair, feet flat and roughly shoulder-width apart, arms crossed, and rise to a full stand five times. The timer starts on go and stops when you are fully upright the fifth time. Wear shoes with grip, and use the same chair for every test so your numbers stay comparable.

Cutoffs and reference values

• Under 13.7 seconds: Lower fall risk (Whitney et al. 2005).
• 13.7 to 15 seconds: Borderline; begin chair-stand practice.
• Over 15 seconds: Higher fall risk; seek assessment.
• Typical adults: Roughly 8 to 13 seconds depending on age (Bohannon et al. 2010).

Because sit-to-stand power is trainable, this is the test most responsive to a few weeks of chair-stand and squat practice. Score your own result on the 5 Times Sit-to-Stand tool page.

The Functional Reach Test

Functional reach measures how far you can lean forward while keeping your feet planted. Stand sideways to a wall with your arm at shoulder height, mark your starting point, lean forward as far as you can without stepping, and mark again. The distance between the marks is your reach. It captures your balance margin, the distance between your center of mass and the edge of your base of support.

Scoring

• 10 inches (25 cm) or more: Low fall risk.
• 6 to 10 inches: Medium fall risk.
• Under 6 inches: High fall risk.

Duncan et al. (1990) found that a reach under 6 inches predicted about a two-fold higher risk of falling, and the cutoffs still anchor the interpretation today. Measure from the third knuckle, keep the arm parallel to the floor, and repeat twice, taking the larger distance. The modified functional reach measures lateral reach for people who cannot safely lean forward. Use the functional reach calculator to score your distance.

Tandem Walking

Tandem walking, sometimes called heel-to-toe gait, tests dynamic balance: your ability to stay stable while moving along a narrow base of support. Walk 10 consecutive heel-to-toe steps in a straight line. Stepping off the line, wobbling, or throwing your arms out to steady yourself signals reduced balance. The test is a core element of neurological and falls screening, and it tends to catch problems that appear only when you are moving rather than standing still. Completing 10 clean steps is the common standard; if you manage only a few before stepping off, add it to the list of findings to mention to a clinician.

The Single-Leg Stance

The single-leg stance, also called the unipedal stance test, measures static balance: how long you can hold your weight on one foot. Stand near a counter for safety, lift one foot a few inches off the floor, and time how long you hold the position without hopping, putting the foot down, or grabbing support. Switch legs and take the better of the two times.

These means come from the Springer et al. (2007) normative study. Notice how much the eyes-closed times drop: closing your eyes removes a major source of balance information, so the test becomes far harder. A practical minimum target for older adults is about 10 seconds with eyes open. The 4-meter walk described next belongs on the same short list, because gait speed and balance decline together.

The 4-Meter Walk and Gait Speed

Gait speed is often called the sixth vital sign in geriatric medicine. The standard assessment is the 4-meter walk: walk at your usual pace and divide 4 meters by your time in seconds. Speeds below 0.8 m/s are slow and linked to higher fall risk and mortality; 1.0 m/s or more is normal. The walking speed sits alongside the chair stand as one of the strongest predictors of independence, which is why the 4-meter walk appears in frailty screening and pre-surgery evaluations. See our gait speed norms for age- and sex-specific values, and the mobility and longevity guide for the survival data behind this test.

Who Each Test Is For

No single test fits every person, which is why clinicians choose by situation. The TUG is the best starting point for anyone over 65 or after a fall, because one number covers the whole journey of standing, walking, and turning. The 5 Times Sit-to-Stand is the better choice when leg weakness is the suspected problem, or when the slow part of your TUG is clearly the rising. Functional reach suits people whose concern is balance or fear of falling, and it is gentle enough to use in screening programs. Tandem walking is the go-to test when a clinician suspects a neurological cause of unsteadiness. The single-leg stance is quick, so it works well as a routine check in falls-prevention classes. The 4-meter walk is the choice for tracking frailty, cardiovascular risk, and response to training over months.

How to Build a Simple At-Home Test Battery

You do not need a clinic to run these tests. Gather a chair with a seat about 46 cm high, a stopwatch or phone timer, a yardstick or tape measure, and a few meters of clear floor space. Then work through this order on a day you feel normal, not after a hard workout or a bad night of sleep.

1. 4-meter walk first: it is the least tiring and sets a baseline for gait speed.
2. Timed Up and Go second: it warms you up and combines walking with turning.
3. 5 Times Sit-to-Stand third: do it while the legs are still fresh, because fatigue inflates the time.
4. Single-leg stance next: do each leg twice, near a counter for safety.
5. Functional reach last: it needs a wall and steady footing, so clear the area first.
6. Tandem walk anytime: use the same 3-meter path, heel to toe, and count clean steps.

Record every number in a notebook or a notes app with the date. Retest monthly for the first three months to see the trend, then every three to six months to maintain it. A two-second change on the TUG, a one-second change on the 5 Times Sit-to-Stand, or a one-inch change on functional reach is meaningful and worth noting, even when the result stays inside the normal band.

What the Results Mean Together

A single borderline result is worth watching. Two or three results in the higher-risk range are worth acting on. The tests reinforce each other because they load different systems: leg strength shows up on the sit-to-stand, balance shows up on reach and the single-leg stance, and gait shows up on the TUG and the 4-meter walk. When several tests drift the same direction, the pattern is more trustworthy than any one number. The reverse is also true. A person who trains chair stands and balance will typically see the sit-to-stand and reach improve first, followed by the TUG, because the TUG depends on all of them at once.

Your scores also double as a training roadmap. The 5 Times Sit-to-Stand points at strength, so chair stands and squats are the fix. Reach and the single-leg stance point at balance, so single-leg work and tandem walking help. The TUG and 4-meter walk point at the whole system, so they respond once strength and balance improve together. Testing monthly turns a vague worry into a measurable plan, and most people see their numbers move within six to eight weeks of consistent training.

A Note on Safety and Medical Care

These tests are screening tools, not diagnoses. Stop any test if you feel dizzy, unsteady, or in pain, and have a family member nearby the first time you run the battery. If a result lands in the high-risk range, such as a TUG over 20 seconds, a sit-to-stand over 15 seconds, or a reach under 6 inches, take the numbers to your doctor or a physical therapist. They can separate strength, balance, medication, and joint issues, and build a program around your specific weaknesses. A screening result is a reason to schedule an appointment, not an emergency, and acting on it early is exactly how falls get prevented.