Faster everyday walking tied to lower mortality

Clinical takeaway: Sensor-derived steps per minute discriminated mortality risk about as well as the established office walk test, though neither measure added much beyond standard risk factors. 

Slow walking has long predicted disability, illness, and death in older adults, and a short timed walk in the exam room is the conventional way to measure it. That test captures one brief effort, which may not reflect how a person walks through the rest of the week. 

Wearable sensors now record steps per minute through ordinary days, so pace could be measured without a clinic visit, if the number predicts as well as the timed test. This cohort comparison puts that to the test. 

Adults who walked faster were less likely to die over about 12 years, whether pace came from the office test or the wrist sensor, after adjustment for age, chronic diseases, and lifestyle. The group averaged 1.2 m/s on the office test, about 75 steps per minute during typical walking, and about 112 in their fastest stretches. Each 10 additional steps per minute tracked with about a sixth lower mortality at typical pace and nearly a fifth lower in the fastest stretches. Each 0.1 m/s faster on the office test was tied to about a tenth lower. The sensor results held after adjusting for daily step count. 

The sensor and the office test flagged who faced higher mortality risk to a similar degree. Neither added much to a model that already counted age, chronic diseases, and limits in daily activities, and only the office test’s small gain was more than chance. The two measures agreed only loosely, so a brisk walk in the exam room didn’t reliably mean brisk walking in daily life. 

The Whitehall II accelerometer substudy followed 4,067 British civil servants, mean age 69.3, for a median 11.8 years, with deaths from the national mortality register. A nurse timed their walk over 2.44 meters in 2012 to 2013, and a wrist accelerometer worn for nine days supplied typical and fastest-stretch cadence. 

This cohort walked well above the 0.8 m/s cutoff for poor physical performance. An accompanying commentary argues the sensor may matter more among slow or frail walkers, who were underrepresented. It calls for testing in those patients next, with falls and hospitalization as outcomes, not only death. 

The findings should not be “interpreted as a contest between the stopwatch and the sensor,” said commentator Davide Liborio Vetrano, MD, PhD, of the Aging Research Center at Karolinska Institutet. “Clinical walking speed remains a compelling candidate for a simple, inexpensive functional vital sign and could serve as a first-line assessment.” 

“Digital monitoring may find its greatest value as a second layer—among individuals whose clinical performance raises concern, when capacity and everyday performance appear discordant, or when detecting change over time matters more than characterizing a single moment,” he added. 

Source: Haddadj R, et al. (2026 Oct 23) JAMA Netw Open. Clinical Walking Speed, Free-Living Walking Cadence, and All-Cause Mortality