Sit‑to‑stand test predicts longevity

A chair-stand test sounds almost too simple to matter. Sit down, stand up five times, and somebody times you. But that basic movement turns out to carry a lot of information about how an older body is holding up — strength, power, coordination, and reserve. And in a February 2026 study that got fresh attention this week, women who did better on that test were less likely to die over the next several years, even after researchers accounted for how active they were and how much time they spent sitting. ### What actually got studied? This was not a tiny lab experiment. Researchers followed 5,472 ambulatory women ages 63 to 99 in the Objective Physical Activity and Cardiovascular Health study, with baseline testing from March 2012 to April 2014 and follow-up through February 19, 2023. The average follow-up was 8.4 years, and 1,964 participants died during that period. (jamanetwork.com) ### What is the sit-to-stand test here? It was the five-times chair-stand test — how many seconds it took to complete five unassisted stands from a chair. The fastest quartile finished in 11.1 seconds or less. The slowest took more than 16.7 seconds. Researchers also measured grip strength, so this was really a look at two very ordinary strength tests clinicians can do without fancy equipment. (jamanetwork.com) ### Why is standing up from a chair such a big deal? Because it is not just “leg strength.” You need force, but you also need to produce it quickly. You need balance, joint function, and enough confidence to shift your weight forward and rise. Basically, it is a daily-life stress test. If that movement gets slow, a lot of systems may be slipping at once. That is why chair stands often tell you more than a single gym-style strength measure. (jamanetwork.com) ### How strong was the link? Pretty strong. Compared with the slowest chair-stand group, the fastest group had a hazard ratio of 0.63 for all-cause mortality — about a 37% lower risk over follow-up. Grip strength showed a similar pattern: the strongest quartile had a hazard ratio of 0.67 versus the weakest quartile, or about a 33% lower risk. Those are meaningful gaps for tests this simple. (bjsm.bmj.com) ### Didn’t activity level already explain this? That is the key part — apparently not. The association held after adjusting for sociodemographic and clinical factors, plus accelerometer-measured physical activity and sedentary behavior, timed walk, and systemic inflammation markers including C-reactive protein. It also held even among women who were not meeting activity guidelines. So this was not just “fitter people live longer.” Strength itself still stood out. (jamanetwork.com) ### Why does that matter clinically? Because most clinics do not have time for elaborate fitness testing. But they can time five chair stands. They can measure grip strength. Those tests may help flag older adults who look okay on paper but have low physical reserve — the kind of hidden vulnerability that shows up later as falls, disability, hospitalization, or earlier death. (jamanetwork.com) ### Is this a “predict your lifespan” trick? Not really. It is a risk marker, not a crystal ball. The study was observational, and it included older women, not everybody. A fast chair-stand time does not guarantee longevity, and a slow one does not doom anyone. But it does tell you something useful about current function — and current function often predicts what comes next. (jamanetwork.com) ### So what is the real takeaway? The real takeaway is almost annoyingly simple: cardio is not the whole story. If standing up from a chair quickly is hard, that is not a trivial annoyance — it may be an early warning. And because the test is cheap, fast, and familiar, it could become one of the easiest ways to spot aging bodies that need strength work before bigger problems arrive. (jamanetwork.com)