Overview
Researchers have proposed gait speed as a 'sixth vital sign.' Here's the case for making walking assessment as routine as blood pressure.
Blood pressure, heart rate, respiratory rate, temperature, and pain — the standard vital signs — are measured at nearly every clinical encounter. A growing body of research argues that gait speed deserves a place alongside them.
The case rests on gait speed's breadth as a health indicator. Studies have associated slower gait speed with higher risks of falls, hospitalization, functional decline, and mortality in older adults. Because walking requires the coordinated function of the heart, lungs, nervous system, muscles, and joints, a change in gait speed can be an early, nonspecific signal that something in that chain has changed.
It's also remarkably practical. Gait speed can be measured with a hallway and a stopwatch in under a minute — or, with smartphone-based tools, captured automatically with even richer detail. Few clinical measurements offer so much signal for so little cost.
The barrier has historically been workflow: busy clinics don't add measurements without clear protocols for acting on them. That's changing as technology automates capture and as care models like Remote Therapeutic Monitoring create structures for reviewing mobility data over time. Routine gait measurement won't diagnose anything by itself — but it can tell a clinician when to look closer, which is exactly what vital signs are for.
Key Takeaways
- Research associates gait speed with falls, hospitalization, and mortality risk
- Walking integrates cardiac, pulmonary, neural, and musculoskeletal function
- Gait speed is among the cheapest, fastest clinical measurements available
- Vital signs tell clinicians when to look closer — gait fits that role