Common causes of lower back pain and how physiotherapy helps

Lower back pain is one of the most common reasons people seek healthcare advice. It affects people of all ages and activity levels, from those who spend long hours sitting at a desk to those who are physically active or recovering from injury. For many, the pain can be frustrating, limiting day-to-day activities and reducing confidence in movement.

While back pain can feel worrying, it is often mechanical in nature and responds well to the right approach. Understanding what commonly causes lower back pain, and how it is usually managed, can help people make informed, sensible decisions about their recovery.

What is lower back pain?

Lower back pain refers to discomfort, stiffness, or pain felt in the area between the rib cage and the hips. It may be felt centrally, on one side, or across the lower back, and can range from mild stiffness to more persistent or severe pain.

In most cases, lower back pain is not caused by serious disease. It is commonly related to how the spine, muscles, joints, and surrounding tissues are functioning and adapting to everyday demands.

Pain may come on suddenly after an awkward movement or build up gradually over time. It can also fluctuate, improving and worsening depending on activity, posture, stress, or fatigue.

What are the most common causes of lower back pain?

Lower back pain is rarely caused by a single factor. More often, it develops due to a combination of mechanical, lifestyle, and load-related issues.

Muscle and joint strain

One of the most common causes of back pain is strain on the muscles and joints of the lower spine. This can happen after lifting, twisting, bending, or even prolonged static positions such as sitting or standing.

When muscles fatigue or joints become irritated, movement can feel stiff or painful, particularly first thing in the morning or after periods of rest.

Prolonged sitting and reduced movement

Long periods of sitting, especially without regular movement breaks, place sustained load on the lower back. Over time, this can contribute to stiffness, reduced mobility, and sensitivity in the surrounding tissues.

A lack of regular movement during the day can also reduce the body’s tolerance to everyday activities, making normal tasks feel more demanding on the back.

Sudden increases in activity

Lower back pain often appears after a sudden change in activity levels. This might include starting a new exercise routine, returning to sport after a break, or doing more physical work than usual.

When the spine and supporting muscles are asked to do more than they are prepared for, irritation and pain can develop.

Poor load tolerance and conditioning

The lower back relies on a combination of strength, mobility, and coordination. When these factors are reduced-  often due to inactivity, previous injury, or repeated episodes of pain-  the back can become less tolerant of everyday loads.

This does not mean the back is weak or damaged, but rather that it may need gradual reconditioning to cope comfortably with normal demands.

Stress and tension

Stress can influence back pain more than many people realise. Increased muscle tension, poor sleep, and reduced movement can all contribute to discomfort in the lower back.

Stress does not cause structural damage, but it can increase sensitivity and slow recovery if not addressed as part of a broader approach.

How does physiotherapy help with lower back pain?

Physiotherapy focuses on restoring normal movement, improving load tolerance, and supporting long-term confidence in the back.

Rather than relying on one single technique, physiotherapy typically uses a combination of assessment, education, movement, and hands-on treatment, tailored to the individual.

Assessment and understanding the problem

A thorough assessment helps identify the likely contributors to back pain, such as movement restrictions, strength deficits, or load management issues. This allows treatment to be targeted rather than generic.

Understanding what is contributing to pain is often reassuring and helps reduce fear around movement.

Improving movement and mobility

Gentle, appropriate movement is a key part of recovery. Physiotherapy commonly includes exercises to improve spinal and hip mobility, reduce stiffness, and restore comfortable movement patterns.

These exercises are selected based on how the back responds, rather than following a one-size-fits-all approach.

Building strength and resilience

Strengthening the muscles that support the spine helps improve the back’s ability to cope with everyday activities. This is done gradually, with exercises matched to the individual’s current capacity.

Improved strength and control can reduce flare-ups and support long-term confidence in movement.

Managing pain and sensitivity

Hands-on techniques may be used to reduce pain and improve comfort, particularly in the early stages. These techniques are usually combined with movement and exercise rather than used in isolation.

Education also plays an important role. Understanding that pain does not necessarily mean damage can help people move more freely and recover more effectively.

Supporting long-term recovery

Physiotherapy is not just about settling current symptoms. It also aims to reduce the risk of recurring back pain by addressing contributing factors such as lifting and sport technique, activity habits, and load management.

Small, sustainable changes often make the biggest difference over time.

When should further advice be considered?

Most episodes of lower back pain improve with time and appropriate management. However, further assessment is usually advised if:

• Pain is severe or worsening rather than improving
• Pain persists for several weeks despite sensible self-management
• There is significant difficulty with everyday activities
• Pain is accompanied by unexplained weight loss, night pain, or changes in bladder or bowel function

These situations are less common but should be assessed promptly to rule out more serious causes.

Key points to remember

• Lower back pain is very common and usually not serious
• Most back pain is mechanical and responds well to movement-based care
• Sudden changes in activity, prolonged sitting, and reduced conditioning are common contributors
• Physiotherapy focuses on movement, strength, and confidence rather than rest alone
• A gradual, individualised approach is usually the most effective

This article is for general information only and is not intended as a substitute for individual assessment or medical advice.

Rob Hanley, Clinic Director