Mobility vs Flexibility: What You Actually Need

People often use the words mobility and flexibility interchangeably.

As a physical therapist, I hear it all the time.

"I'm not very flexible."

"I need better mobility."

"I should probably stretch more."

While these concepts are related, they're not actually the same thing.

And understanding the difference can completely change the way you approach movement, exercise, and injury prevention.

What is flexibility?

Flexibility refers to the ability of a muscle or group of muscles to lengthen.

In simple terms, flexibility is passive.

It's what happens when a force helps move you into a position.

For example, if you sit on the floor and reach toward your toes, the amount of motion available represents flexibility.

Flexibility is important.

But flexibility alone doesn't guarantee good movement.

What is mobility?

Mobility is your ability to actively control a position through a range of motion.

Think of mobility as flexibility plus strength and control.

For example, being able to pull your knee to your chest is flexibility.

Being able to actively lift your knee to your chest and control it is mobility.

Life and sports depend far more on mobility than flexibility.

Because movement requires control.

What does the research say?

Research published in Sports Medicine and JOSPT has demonstrated that improving mobility often requires more than simply stretching.

Strength training through full ranges of motion, motor control exercises, and movement practice all play important roles in creating lasting changes.

This is one reason why some people stretch every day for years and still feel tight.

They're improving flexibility without improving control.

Why stretching doesn't always work

This is one of the most common frustrations I hear.

Someone stretches their hamstrings every day.

Or their hip flexors.

Or their shoulders.

Yet they still feel tight.

Why?

Because tightness is not always a flexibility problem.

Sometimes the body creates tension because it lacks stability or control elsewhere.

The nervous system often increases muscle tension as a protective strategy.

In those situations, stretching may provide temporary relief, but the sensation quickly returns.

How I address mobility problems

When someone comes into Modern Movement Physical Therapy in Scottsdale complaining of stiffness, I'm trying to determine what's actually limiting movement.

Is it:

• A joint restriction?

• A muscle restriction?

• Weakness?

• Poor motor control?

• A combination of factors?

Treatment may include:

• Joint mobilization

• Dry needling

• Mobility exercises

• Strength training

• Movement retraining

The goal isn't simply creating motion.

The goal is teaching the body how to use that motion.

The bottom line

Flexibility is important.

Mobility is usually more important.

Because life doesn't require passive range of motion.

It requires active, controlled movement.

At Modern Movement Physical Therapy in Scottsdale, I help patients improve both mobility and strength so they can move more efficiently, reduce injury risk, and continue doing the activities they enjoy.

Because touching your toes is nice.

Actually being able to use that movement is even better.

Take good care of your body, it's the only one you have.

Yours in health,

Dr. Michael Price