Movement Is a Vital Sign!
Updated: 20 hours ago
Most people know the classic vital signs, heart rate, blood pressure, temperature, oxygen saturation. These numbers matter. They can reveal immediate stress, infection, cardiovascular strain, and metabolic imbalance.
But there’s something these vital signs do not measure very well. They don’t measure how well your body actually functions in the real world. Because the human body was never designed to be judged sitting still. That’s why modern research has increasingly highlighted something both simple and deeply important:
Movement is a vital sign.
Not metaphorically. Not as a catchy slogan. But as a measurable indicator of health, function, and even longevity.
Why Movement Predicts Health So Well
Movement is one of the only health measures that forces multiple systems to work together in real time. To walk, balance, stand from a chair, or grip something firmly, your body needs:
A working cardiovascular system (oxygen delivery)
Intact muscles, tendons, and joints (force production)
Healthy connective tissue mechanics (load transfer)
A functioning nervous system (coordination, timing, balance)
Brain integration (planning, perception, adaptability)
When movement capacity declines, it’s rarely “just one thing.” It often reflects a broader change in resilience. That’s why movement tests can outperform many traditional markers in predicting outcomes.
In a sense, movement gives you an honest report card of total-body function.
Three Simple Movement Tests That Predict Your Biological Trajectory
Here’s what makes this approach powerful. These are not expensive scans. Not lab work. Not high-tech assessments. They are simple tests, yet they predict hospitalization risk, disability risk, cognitive decline risk, and mortality risk.
Vital Sign #1 - Gait Speed, the walking “truth test”
Walking speed sounds almost too basic, until you see the evidence. A major study published in JAMA found that gait speed is a powerful predictor of survival in older adults. Faster walkers tended to live longer. Slower walking speed, especially below about 1.0 m/s, was associated with a higher likelihood of hospitalization and earlier mortality. In practical terms, the research suggests that if your normal walking pace drops below a brisk walk, roughly 3.6 km/h (2.2 mph), it can be an early warning sign of declining health and resilience. (3).
Why? Because walking is not a simple act.
Walking requires your brain, nerves, spine, hips, knees, ankles, feet, balance system, posture, and cardiovascular engine to coordinate seamlessly. When speed drops, it may be one of the earliest measurable signs of decreasing physiological reserve. In practical terms, walking speed doesn’t just reveal how strong your legs are, it reveals how well your body is aging.
How to improve your Gait Speed
To improve gait speed, focus on the three big drivers of faster walking, endurance, strength, and balance, while also removing pain and stiffness that slow you down. Simple strategies include: walk more frequently (short walks count), add brief “fast-walk intervals” (20–30 seconds faster, then recover, repeat), build leg power with sit-to-stands, step-ups, and calf raises 2–3x/week, practice balance drills daily (single-leg stance near a counter), and address ankle/hip mobility and any persistent pain early, since pain and stiffness quickly reduce stride length and confidence.
Vital Sign #2 - Grip Strength
Grip strength has emerged as one of the most robust health measures in population research. The PURE study, involving over 139,000 participants, found that weaker grip strength was associated with significantly increased risk of mortality, and increased risk of cardiovascular disease and other major health outcomes (2). Grip strength seems simple, but it reflects something bigger:
Overall muscle integrity
Nervous system output
Inflammatory load
Metabolic health
Your ability to handle stressors like illness, injury, or surgery
In other words, grip strength provides insight into what clinicians often call biological reserve, the ability to withstand challenges without tipping into decline. When grip strength is low, the body tends to be more fragile. When it improves, overall resilience improves.
How to improve Grip Strength
To improve grip strength, especially for seniors, the goal is to build everyday hand strength and whole-body resilience with simple, safe home-based training. Effective options include: daily squeezing practice (stress ball, rolled towel, or therapy putty), towel wringing (like twisting out a wet towel), jar-opening practice using light resistance tools, farmer carries at home (carry grocery bags or light dumbbells while walking around the house), and gentle hanging or supported holds (holding onto a sturdy countertop edge or rail). Done consistently 3–5 days per week, these small exercises strengthen the hands and forearms, and often improve overall strength and function, the exact “reserve capacity” that protects independence with aging.
Vital Sign #3 - Balance, the nervous system’s report card
Balance is one of the most sophisticated human abilities. It is the nervous system coordinating sensory input and motor output in real time, while constantly adapting to gravity, small perturbations, and internal shifts in body position. A landmark study found that being unable to stand on one leg for 10 seconds was associated with a significantly increased risk of mortality in middle-aged and older adults (1).
But balance is not only about falls. It’s about the integrity of the systems that keep you upright and safe:
Vision
Vestibular function (inner ear)
Proprioception (joint position sense)
Hip stability and postural reflexes
Reaction speed and cognitive integration
Poor balance is linked to increased risk of falls and frailty, and it often parallels cognitive decline because movement and cognition are tightly intertwined.
How to Improve Your Balance
Click on the video to the right to learn exercises that can help you improve balance. Balancing exercises are crucial components in both Rehabilitation and Sports Performance training. These exercises should not be overlooked, as they can bolster one's capacity to stabilize the body during functional movements. By incorporating straightforward balance exercises into a progressive training program, you can enhance balance and avert injuries.
It's all About Maintaining Your Independence
Aging is often framed as something that happens to us, a slow narrowing of life’s options. But the research behind movement as a vital sign tells a very different story. It suggests that aging is not just measured in years, it is measured in capacity, the ability to generate force, maintain balance, and move through the world with confidence. Because when movement declines, it rarely declines in isolation. It is the visible tip of a deeper physiological shift, less reserve, slower recovery, reduced adaptability. That’s why walking speed, grip strength, and balance are so powerful. They are not simply “tests”, they are early warning lights, and they often illuminate change long before disease becomes obvious.
But here is the hopeful part, and it may be the most important message in this entire article, movement is modifiable. You can train it, restore it, and protect it, far longer than most people believe. And what you are truly protecting is not just physical fitness, it is freedom. The freedom to travel, to play with grandchildren, to carry your own bags, to climb stairs without planning your breathing, to get down on the floor and stand back up without help. Movement is the quiet currency of independence. So treat it like the vital sign it is. Track it. Strengthen it. Respect it. Because in the end, the most meaningful health outcome isn’t merely living longer, it is maintaining the ability to live fully, and live on your own terms, right to the final chapters of life.
References
Araujo, C. G. S., de Araújo, C. G. S., Laukkanen, J. A., & Myers, J. (2022). Successful 10-second one-legged stance performance predicts survival in middle-aged and older individuals. British Journal of Sports Medicine, 56(17), 975–980.
Leong, D. P., Teo, K. K., Rangarajan, S., Lopez-Jaramillo, P., Avezum, A., Orlandini, A., Seron, P., Ahmed, S. H., Rosengren, A., Kelishadi, R., Rahman, O., Swaminathan, S., Iqbal, R., Gupta, R., Lear, S. A., Oguz, A., Yusoff, K., Zatonska, K., Chifamba, J., … Yusuf, S. (2015). Prognostic value of grip strength: Findings from the Prospective Urban Rural Epidemiology (PURE) study. The Lancet, 386(9990), 266–273.
Studenski, S., Perera, S., Patel, K., Rosano, C., Faulkner, K., Inzitari, M., Brach, J., Chandler, J., Cawthon, P., Connor, E. B., Nevitt, M., Visser, M., Kritchevsky, S., Badinelli, S., Harris, T., Newman, A. B., Cauley, J., Ferrucci, L., & Guralnik, J. (2011). Gait speed and survival in older adults. JAMA, 305(1), 50–58.
DR. BRIAN ABELSON, DC. - The Author
Dr. Brian Abelson is a chiropractor, author, and educator with more than 30 years of clinical experience in musculoskeletal care, rehabilitation, and sports performance. His educational work focuses on musculoskeletal conditions, human movement, sports biomechanics, and evidence-informed approaches to treatment and rehabilitation.
He is the developer of Motion Specific Release (MSR) and Clinical Director of Kinetic Health in Calgary, Alberta, Canada.
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