Why Does My Lower Back Hurt After Sitting for a Long Time?

Why Does My Lower Back Hurt After Sitting for a Long Time? A Physical Therapist Answers

By Nova Physical Therapy | North Hollywood, CA

Patient Question

“Why does my lower back hurt after sitting at my desk, driving, or using the computer for a long time, and can physical therapy help?”

The Short Answer

Lower back pain after prolonged sitting is a common musculoskeletal complaint. Symptoms may be influenced by several factors, including how long you remain in one position, your overall activity level, physical conditioning, movement variability, muscle performance, previous episodes of back pain, occupational demands, and your individual tolerance to sitting.

There is no single “perfect posture” that prevents lower back pain for everyone. For many people, changing positions regularly and remaining appropriately active may be more practical than attempting to maintain one rigid posture throughout the day.

A licensed physical therapist can evaluate movement, strength, mobility, sitting tolerance, functional limitations, and work-related demands to determine which factors may be contributing to your symptoms and develop an individualized rehabilitation plan.

Why Can Sitting Make My Lower Back Hurt?

Sitting itself is a normal activity and is not inherently harmful.

Problems may arise when an individual has difficulty tolerating a particular position or remains relatively inactive for extended periods.

People commonly spend prolonged periods sitting while:

• Working at a computer
• Driving
• Commuting
• Studying
• Watching television
• Gaming
• Traveling
• Using a phone or tablet

For some individuals, symptoms may increase gradually the longer they remain in one position.

Changing position, standing, or walking may temporarily improve symptoms.

Is Poor Posture Causing My Back Pain?

Posture may influence symptoms for some individuals, but the relationship between posture and pain is more complex than simply labeling a position as “good” or “bad.”

People naturally use many different postures throughout the day.

Rather than trying to maintain one position continuously, it may be helpful to consider:

• Movement variety
• Sitting duration
• Workstation setup
• Physical activity
• Strength and conditioning
• Individual comfort
• Frequency of position changes

A physical therapist can assess whether specific positions or work activities appear to influence your symptoms.

Is Slouching Bad for My Back?

Slouching occasionally does not automatically mean you are damaging your spine.

The human spine is designed to move through different positions.

For some people, however, remaining in any position—including a slouched or very upright position—for a prolonged period may become uncomfortable.

Instead of becoming afraid of a particular posture, the goal may be to develop the ability to comfortably tolerate a variety of positions and activities.

Why Does My Back Feel Better When I Stand Up or Walk?

Movement changes the physical demands placed on the body.

Standing or walking after prolonged sitting activates different muscle groups and moves the hips, pelvis, and spine through different positions.

For some individuals, a short period of movement may help reduce stiffness and improve comfort.

This is one reason regular movement throughout the workday may be useful.

How Often Should I Get Up From My Desk?

There is no universal schedule that is appropriate for every person.

Rather than focusing on a rigid rule, many people may benefit from avoiding very long periods of uninterrupted sitting and incorporating movement throughout the day.

Examples may include:

• Standing periodically
• Walking briefly
• Changing sitting positions
• Performing appropriate mobility exercises
• Alternating tasks when possible

The appropriate strategy should be individualized based on your health, symptoms, work environment, and physical therapy examination.

Can My Office Chair Cause Lower Back Pain?

Your chair and workstation may influence comfort, but replacing a chair alone does not necessarily address all contributing factors.

A workstation assessment may consider:

• Chair height
• Back support
• Desk height
• Monitor position
• Keyboard and mouse placement
• Ability to change positions
• Duration of computer work
• Frequency of movement

The goal is generally to create a workstation that allows comfortable movement and supports the demands of your job.

What About Lower Back Pain From Driving?

Driving combines prolonged sitting with relatively limited opportunities to change position.

Symptoms may become particularly noticeable during:

• Long commutes
• Road trips
• Rideshare or delivery work
• Commercial driving
• Frequent business travel

Depending on the individual, strategies may include adjusting the seating position, taking appropriate movement breaks during longer trips, and addressing relevant strength or mobility impairments.

Does Sitting Pain Mean I Have a Herniated Disc?

Not necessarily.

A lumbar disc condition can contribute to symptoms in some individuals, but experiencing pain while sitting does not establish a diagnosis.

Research has demonstrated that spinal imaging findings such as disc degeneration and disc bulges are also found in many people who do not have lower back pain.

Therefore, MRI findings should be interpreted together with the patient's:

• Medical history
• Symptoms
• Neurological findings
• Physical examination
• Functional limitations

A physical therapist evaluates the entire clinical presentation rather than assuming that one symptom identifies the cause.

Can Physical Therapy Help Lower Back Pain From Sitting?

Current clinical practice guidelines support exercise, education, and individualized rehabilitation for many individuals with lower back pain.

Depending on examination findings, physical therapy may include:

• Therapeutic exercise
• Trunk strengthening
• Hip strengthening
• Mobility exercises
• Movement coordination training
• Aerobic exercise
• Functional movement training
• Workstation and ergonomic education
• Activity modification
• Home exercise programs
• Manual therapy when clinically indicated
• Progressive return to work or recreational activities

Physical therapy focuses on improving function and helping patients develop greater tolerance for the activities required in everyday life.

What Does Research Say?

Current low-back-pain clinical practice guidelines emphasize active rehabilitation and individualized exercise rather than prolonged inactivity.

Exercise approaches may include strengthening, endurance training, aerobic activity, movement-control exercise, and other interventions selected according to the patient's presentation.

Research also suggests that posture should not be viewed as a simple explanation for all lower back pain. There is substantial variation in how people sit and move, and no single posture has been established as universally optimal for preventing back pain.

For many individuals, movement, physical capacity, activity tolerance, and regularly varying positions may be more meaningful targets than trying to sit perfectly all day.

What Happens During a Physical Therapy Evaluation?

At Nova Physical Therapy, every patient receives an individualized evaluation that may include:

• Medical history review
• Symptom behavior assessment
• Lumbar mobility assessment
• Functional movement assessment
• Strength testing
• Hip and lower-extremity assessment
• Neurological screening when indicated
• Sitting tolerance assessment
• Walking assessment
• Review of occupational demands
• Workstation considerations when relevant
• Activity limitation assessment
• Goal setting

Your physical therapist also screens for findings that may indicate the need for additional medical evaluation.

Following the evaluation, an individualized plan of care is developed based on your examination findings, functional limitations, and personal goals.

When Should You Seek Medical Attention?

Although lower back pain is frequently musculoskeletal, certain symptoms require prompt medical evaluation.

Seek appropriate medical attention for symptoms such as:

• New loss of bowel or bladder control
• Numbness in the saddle or genital region
• Significant or rapidly progressive leg weakness
• Significant trauma
• Fever associated with severe back pain
• Unexplained weight loss with concerning symptoms
• Rapidly progressing neurological symptoms

These findings should not be managed solely through routine physical therapy.

Why Patients Choose Nova Physical Therapy

At Nova Physical Therapy, our mission is simple:

We Care.

We believe patients should understand how their everyday activities relate to movement and function without becoming afraid of normal positions such as sitting, bending, or moving their spine.

Our treatment philosophy emphasizes:

• Evidence-based care
• Individualized treatment plans
• Patient education
• Functional outcomes
• Progressive strengthening
• Movement optimization
• Work-related rehabilitation
• Long-term health and wellness

Our goal is not simply to help you feel better during your appointment. We want to help improve your ability to sit, drive, work, exercise, and participate in everyday life.

Frequently Asked Questions

Why does my back hurt after sitting but feel better when walking?

Changing from sitting to walking alters muscle activity and movement throughout the hips, pelvis, and spine. Some individuals tolerate movement better than prolonged static positioning.

Is sitting all day bad for my back?

Prolonged sedentary behavior may affect overall health and can be uncomfortable for some individuals, but sitting itself should not automatically be considered harmful to the spine. Regular physical activity and movement variation are important.

Do I need perfect posture at my computer?

No single sitting posture has been established as perfect for everyone. Comfort, workstation setup, movement variation, and the ability to change positions may all be important.

Should I buy an expensive ergonomic chair?

An appropriate chair may improve comfort, but a chair alone may not address factors such as prolonged sitting, activity levels, strength, mobility, or physical conditioning.

Is a standing desk better for lower back pain?

A standing desk provides another positioning option, but standing continuously is not necessarily better than sitting continuously. Alternating positions may be useful for some individuals.

Can physical therapy help if my job requires sitting all day?

Yes. A physical therapist can evaluate your functional limitations and develop an individualized program addressing movement, strength, mobility, activity tolerance, and work-related demands.

Schedule an Evaluation

If lower back pain is affecting your ability to sit at work, drive, travel, exercise, sleep, or participate in everyday activities, Nova Physical Therapy can help.

Our licensed physical therapists provide comprehensive evaluations and individualized rehabilitation programs focused on improving movement, physical capacity, and function.

Contact Nova Physical Therapy today to schedule your comprehensive physical therapy evaluation.

Disclaimer

The information provided in this article is intended for educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. Reading this article does not establish a physical therapist-patient relationship with Nova Physical Therapy or any of its providers.

Lower back pain can have multiple causes. Pain associated with sitting, posture, driving, or computer work does not establish a specific diagnosis. Treatment and activity recommendations should be individualized based on a licensed physical therapist's examination, clinical judgment, medical history, patient presentation, current evidence, and applicable scope-of-practice requirements.

Physical therapists screen patients and refer to physicians or other appropriate healthcare professionals when findings require additional medical evaluation.

If you experience new bowel or bladder dysfunction, saddle-region numbness, significant or rapidly progressive weakness, significant trauma, fever associated with severe back pain, or other concerning symptoms, seek appropriate medical attention.

Individual results may vary. Nova Physical Therapy does not guarantee specific outcomes from physical therapy, exercise, ergonomic changes, or any healthcare intervention discussed in this article.

References

1. George SZ, et al. Interventions for the Management of Acute and Chronic Low Back Pain: Revision 2021. Journal of Orthopaedic & Sports Physical Therapy. 2021.
2. World Health Organization. WHO Guideline for Non-Surgical Management of Chronic Primary Low Back Pain in Adults in Primary and Community Care Settings. 2023.
3. Brinjikji W, et al. Systematic Literature Review of Imaging Features of Spinal Degeneration in Asymptomatic Populations. American Journal of Neuroradiology. 2015.
4. Swain CTV, et al. No Consensus on Causality of Spine Postures or Physical Exposure and Low Back Pain: A Systematic Review of Systematic Reviews. Journal of Biomechanics. 2020.
5. American Physical Therapy Association (APTA). Guide to Physical Therapist Practice.
6. Physical Therapy Board of California (PTBC). Physical Therapy Practice Act.

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