Can You Measure How Well Your Body Is Aging?

Can you measure how well your body is aging? While your chronological age tells you how many years you have lived, it doesn’t tell you how well your body is performing. Two people who are the same age can have very different levels of strength, balance, mobility, stability, endurance and physical function. Measuring these areas can provide a different perspective on aging—one that focuses less on the number of years you’ve lived and more on how your body is performing today.

If your goal is to improve your healthspan, maintain your independence and continue doing the activities you enjoy as you get older, understanding your physical performance can be an important place to start.

What Does It Mean to Age Well Physically?

When we think about aging well, we often focus on nutrition, sleep, disease prevention and other aspects of overall health.

These are important.

But there is another part of healthy aging that deserves attention:

Physical function.

How well can you move?

How strong are you?

How well can you maintain your balance?

Can you get up from the floor?

Can you climb stairs?

Can you carry your luggage?

Can you walk for an extended period?

Can you reach overhead?

Can you continue participating in the activities you enjoy?

These abilities are influenced by multiple components of physical fitness, including strength, stability, mobility, balance, coordination and endurance.

That is why measuring how well your body is aging is not simply about measuring how much you weigh or how often you exercise.

It is about understanding physical performance.

Your Chronological Age Doesn’t Tell the Whole Story

Your chronological age is an objective measurement.

If you are 50 years old, your chronological age is 50.

But chronological age doesn’t tell you whether you have good balance, strong muscles, adequate mobility or the physical capacity to perform the activities you want to do.

Consider two people who are both 60 years old.

One may regularly strength train, walk, hike and participate in recreational activities.

The other may have become increasingly sedentary and have difficulty with stairs, balance or getting up from the floor.

Their chronological ages are identical.

Their physical capabilities may be very different.

This is why it can be useful to look at more than chronological age when thinking about healthy aging.

Can You Actually Measure How Your Body Is Aging?

You cannot measure every aspect of aging with one test.

Aging is complex and involves many different systems throughout the body.

However, you can measure aspects of physical performance.

You can assess strength.

You can assess balance.

You can assess mobility.

You can assess endurance.

You can assess movement control.

You can assess stability and symmetry.

These measurements can provide useful information about your current physical capabilities.

The goal isn’t to create a single number that defines your health.

The goal is to create a snapshot of your physical performance that can help you understand where you are today.

What Should You Measure?

There are many different ways to assess physical function.

Strength

Strength is your ability to produce force.

Maintaining strength is important because everyday activities often require us to produce and control force.

Getting out of a chair, climbing stairs, carrying groceries and lifting objects all require strength.

Balance

Balance is your ability to maintain and recover control of your body.

Walking on uneven surfaces, changing direction and standing on one leg all challenge your balance.

Mobility

Mobility refers to your ability to move through the ranges of motion you need.

Mobility in your hips, spine, shoulders and other joints can influence how efficiently you move.

Stability

Stability involves your ability to control your body and maintain appropriate alignment during movement.

You don’t necessarily need to be completely rigid.

You need to be able to control movement effectively.

Endurance

Endurance is your ability to sustain physical activity.

This includes cardiovascular endurance as well as muscular endurance.

Coordination

Coordination is your ability to organize and control movement.

Your nervous system and muscles must work together to produce efficient movement.

These qualities work together.

That is why measuring just one of them may not provide a complete picture of your functional fitness.

Why Functional Fitness Is Important for Healthy Aging

Functional fitness focuses on how well you can perform the physical activities required for everyday life.

It is not simply about looking fit.

It is about being capable.

You may not care how much you can bench press at age 70.

You may care that you can carry your suitcase through an airport.

You may not care about running a marathon.

You may care that you can walk through a new city while traveling.

You may not care about having a certain body composition.

You may care that you can get down on the floor to play with your grandchildren and get back up again.

Functional fitness connects exercise to the things you actually want your body to be able to do.

The 6 Green Zones™: A Focused Look at Physical Function

At PhysioFit, we developed the 6 Green Zones™ as a focused framework for examining six key areas of the body that contribute to physical function as we age:

1. Shoulder
2. Neck
3. Thoracic spine
4. Lumbar spine
5. Hips
6. Calves

Within these areas, the 6 Green Zones™ assessment examines specific muscles and performance characteristics related to strength, muscle activation, stability, symmetry and physical control.

Why focus on these areas?

Because physical function depends on more than the large muscles you can easily see.

The muscles surrounding your spine contribute to postural control and stability.

Your hips contribute to pelvic and lower-extremity control.

Your calf muscles contribute to activities such as walking, propulsion and balance.

Your shoulder muscles contribute to reaching, lifting and upper-extremity control.

Your neck contributes to head and postural control.

The 6 Green Zones™ provide a structured way to examine these areas and identify where your body may be performing well and where there may be opportunities for improvement.

What Does Your PhysioFit Age® Tell You?

Once you begin measuring physical performance, you may naturally want to know what the results mean.

This is where PhysioFit Age® comes in.

Your chronological age tells you:

How many years you’ve lived.

Your PhysioFit Age® provides a snapshot of physical performance relative to chronological age.

PhysioFit Age® is calculated using performance information from the 6 Green Zones™ assessment along with other components of the assessment.

It is not intended to predict how long you will live.

It does not measure your overall health or replace a medical evaluation.

Instead, PhysioFit Age® is designed to provide another perspective on your physical performance.

It helps turn assessment results into a simple concept that is easy to understand:

“How is my body performing relative to my chronological age?”

What If Your PhysioFit Age® Is Higher Than Your Chronological Age?

If your PhysioFit Age® is higher than your chronological age, it shouldn’t be viewed as a diagnosis or a prediction of your future.

Think of it as information.

Your results may identify areas of physical performance that could benefit from greater attention.

Perhaps your strength needs improvement.

Perhaps your stability or balance needs more attention.

Perhaps you have differences between sides of your body.

Perhaps muscular endurance is an area where you could improve.

Knowing this gives you an opportunity to do something about it.

Measurement creates awareness. Awareness creates an opportunity to act.

What If Your PhysioFit Age® Is Lower Than Your Chronological Age?

A PhysioFit Age® that is lower than your chronological age may indicate that the physical performance measured by the assessment compares favorably with age-based expectations.

That’s encouraging.

But the goal isn’t to become obsessed with having the lowest possible PhysioFit Age®.

Healthy aging isn’t a competition.

The goal is to maintain and improve your physical capabilities so you can continue doing the things that matter to you.

Your results are a snapshot—not your identity.

Can You Improve Your PhysioFit Age®?

Physical performance can change.

With appropriate exercise and training, you can work to improve qualities such as strength, balance, mobility, stability and endurance.

That’s why an assessment can be particularly valuable when it is used as a baseline.

Your first assessment tells you where you are today.

Your results can help identify areas to focus on.

Then, after implementing an appropriate exercise program or plan of care, you can re-test to track your progress.

The process becomes:

Measure → Understand → Improve → Re-test

This makes your assessment more than a one-time experience.

It becomes a way to track changes in your physical performance over time.

Why Measuring Physical Function Matters for Healthspan

This brings us back to the bigger question of healthspan.

Lifespan refers to how long you live.

Healthspan refers to the years you spend in good health and with the ability to participate in the activities that matter to you.

For many people, the goal isn’t simply to add more years to life.

It’s to maintain the ability to live those years well.

That might mean traveling, exercising, hiking, golfing, gardening, playing with family or simply maintaining independence.

Physical function is an important part of being able to do those things.

Measuring physical performance doesn’t tell you exactly how long you will live.

But it can help you understand where your body is performing today and where you may have opportunities to improve.

Your Body Gives You Information

Your body is constantly giving you information.

How easily do you get up from a chair?

How stable are you when standing on one leg?

How well can you climb stairs?

How long can you walk?

Can you reach overhead comfortably?

Can you carry your luggage?

Can you control your body during movement?

These are all clues about physical function.

A structured assessment allows you to move beyond simply guessing how well you’re doing.

It gives you measurements that can establish a baseline and provide something to compare over time.

So, Can You Measure How Well Your Body Is Aging?

You can measure important aspects of how your body is performing as you age.

You cannot reduce the complexity of aging to one number.

But you can evaluate meaningful components of physical performance.

You can measure strength.

You can measure balance.

You can measure stability.

You can measure mobility.

You can measure endurance.

You can measure movement control.

And you can track how those qualities change over time.

That’s the value of looking at functional fitness as part of a healthy-aging strategy.

Discover Your 6 Green Zones™ and PhysioFit Age®

If you want to better understand how your body is performing, the first step is establishing a baseline.

The 6 Green Zones™ assessment provides a focused look at six key areas of your body—shoulders, neck, thoracic spine, lumbar spine, hips and calves—and examines specific aspects of physical performance within those areas.

Your results contribute to your personalized PhysioFit Age®, providing a snapshot of your physical performance relative to your chronological age.

Your chronological age tells you how many years you’ve lived.

Your PhysioFit Age® provides a snapshot of how your body is performing.

The goal isn’t to predict your future.

It’s to understand where you are today, identify opportunities to improve, and give yourself a measurable baseline that you can use to track your progress.

Find Out How Your Body Is Performing

Discover your 6 Green Zones™, learn your PhysioFit Age®, and take the first step toward a more personalized approach to functional fitness and healthy aging.