How to Stretch the QL: A Complete Guide to Quadratus Lumborum Stretching

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The quadratus lumborum (QL) is one of the most overlooked muscles in lower back pain management and one of the most commonly tight muscles in people who sit for extended periods, run regularly, or have any degree of hip or pelvic asymmetry. Understanding where it is and what it does makes stretching it significantly more effective.

Important note: QL tightness is one of many potential contributors to lower back pain. Significant, persistent, or radiating lower back pain should be assessed by a physiotherapist or doctor before beginning a self-directed stretching programme.

What the QL Is and Why It Gets Tight

The quadratus lumborum is a deep muscle of the posterior abdominal wall. It runs from the posterior iliac crest (the back of the hip bone) upward to the 12th rib and the transverse processes of the lumbar vertebrae (L1 to L4). Essentially, it bridges the hip and the lower rib on each side.

What the QL does:

  • Lateral flexion of the spine (bending sideways)
  • Hip hiking (raising one hip toward the ribs during walking)
  • Stabilising the lumbar spine during movements of the trunk and lower limbs
  • Fixing the 12th rib during forceful exhalation

Why it gets tight:
The QL is continuously active during almost all upright activity — it stabilises the lumbar spine with every step taken. Activities that consistently load one side more than the other (running with a leg length discrepancy, carrying bags on one shoulder, sitting with a lateral lean, sleeping on one side in a curled position) cause asymmetric QL tightness that is very common.

Prolonged sitting compresses the QL into a shortened position as the hip is flexed and the lumbar spine is flexed, gradually shortening the muscle over the course of a working day.

What tight QL feels like:

  • Deep, aching lower back pain on one or both sides, often described as being in the muscle rather than the spine itself
  • Pain that wraps around to the hip or the front of the thigh
  • Difficulty standing upright after prolonged sitting
  • Pain that is worse with lateral bending away from the tight side
  • A sense of the lower back being “locked” on one side

Why QL Stretching Requires Specific Positions

The QL runs diagonally from the hip to the lower ribs in a vertical-to-slightly-diagonal orientation. To stretch it, two things must happen simultaneously:

  1. The hip must move away from the ribs on the side being stretched (creating distance between the iliac crest and the 12th rib)
  2. The trunk must flex away from the tight side (lateral flexion toward the opposite side)

This combination — hip dropping on the tight side while the trunk bends away — is what specifically loads the QL. Stretches that only bend the trunk sideways without the hip drop component will stretch the lateral trunk musculature (obliques, latissimus dorsi) more than the QL specifically.

The Best QL Stretches

Stretch 1: Standing Side Bend Over Support (Primary QL Stretch)

The most direct and most accessible QL stretch, using a wall or countertop for support.

How to do it:

  1. Stand beside a wall or sturdy surface, with the side to be stretched nearest the wall
  2. Place the hand of the near arm on the wall for light support
  3. Cross the far foot over and in front of the near foot
  4. Reach the far arm up and over the head toward the wall in a sweeping arc
  5. Allow the hip on the wall side to push outward (the hip drop component)
  6. The body arcs into a C shape with the concavity toward the wall
  7. The stretch should be felt in the lateral lower back and hip area on the wall side
  8. Hold 30 to 60 seconds

The hip drop is critical: Most people perform this stretch as a simple side bend without the hip component. Consciously pushing the hip toward the wall while reaching the arm overhead creates the specific combination of hip-to-rib distance increase that targets the QL rather than the more superficial lateral muscles.

Sets: 3 x 45 to 60 seconds per side

Stretch 2: Child’s Pose With Lateral Shift (Floor QL Stretch)

A floor-based stretch that targets the QL through a combination of trunk flexion and lateral shift.

How to do it:

  1. Begin in child’s pose: kneel on the floor, hips to heels, arms extended forward
  2. Walk both hands to one side (toward the right to stretch the left QL)
  3. Allow the hips to shift slightly to the opposite side (left) of where the hands are pointing
  4. The body forms a gentle C curve with the concavity toward the side being stretched
  5. Hold 30 to 60 seconds per side

What the lateral shift adds: The hands-to-one-side movement creates thoracic and lumbar lateral flexion. The simultaneous hip shift to the opposite side adds the hip-away-from-ribs component that specifically loads the QL on the side being stretched. Without the hip shift, this becomes a thoracic side stretch rather than a QL stretch.

Sets: 3 x 45 to 60 seconds per side

Stretch 3: Supine QL Stretch (Lying Twist)

A relaxed, gravity-assisted QL stretch performed lying on the back, appropriate for people with acute lower back sensitivity.

How to do it:

  1. Lie on the back with both knees bent, feet flat on the floor
  2. Cross the ankle of the side to be stretched over the opposite knee (figure-4 position)
  3. Gently drop both legs to the opposite side (if stretching the right QL, lower both legs to the left)
  4. The crossed ankle and the figure-4 position causes the right hip to move away from the right ribs as the legs lower to the left
  5. Allow gravity to deepen the stretch rather than forcing the legs down
  6. Hold 60 to 90 seconds per side

Why the figure-4 position matters: Simply dropping both legs to one side in a standard supine twist stretches the piriformis, IT band, and lower back broadly. The figure-4 modification shifts the hip of the upper leg into a position that specifically increases the QL stretch on that side by altering the relationship between the iliac crest and the lower rib.

Sets: 2 to 3 x 60 to 90 seconds per side

Stretch 4: Seated QL Stretch (Chair-Based)

Appropriate for desk workers who want to stretch the QL during the working day without getting on the floor.

How to do it:

  1. Sit upright at the edge of a chair
  2. Cross the ankle of the side to be stretched over the opposite knee
  3. Lean the trunk away from the side being stretched (if the right ankle is crossed, lean the trunk to the left)
  4. Simultaneously allow the right hip to drop slightly downward
  5. Reach the right arm upward toward the ceiling to increase the rib-to-hip distance
  6. Hold 30 to 45 seconds per side

When to use: Between work sessions, during desk breaks, or as a maintenance stretch throughout the day. The seated version is less intense than the standing or floor versions but provides useful ongoing QL mobility maintenance.

Sets: 2 to 3 x 30 to 45 seconds per side

Stretch 5: Doorway QL Stretch (Standing Hip Drop)

A more intense version of the standing side bend that uses a doorframe for greater control of the hip position.

How to do it:

  1. Stand in a doorway facing the frame
  2. Place both hands on the door frame at shoulder height
  3. Step one foot forward through the doorway
  4. Allow the hip on the side being stretched to drop outward and downward (away from the ribs)
  5. Maintain the grip on the frame to allow the trunk to bend laterally while the hip drops
  6. The stretch should feel deep in the lateral lower back area
  7. Hold 45 to 60 seconds per side

The doorframe advantage: The grip on the frame allows the body to lean into a position of greater lateral trunk flexion than is easily achievable freestanding, while the hip drop is supported by the stance position. This combination produces a more specific and more intense QL stretch than the freestanding side bend for many people.

Sets: 3 x 45 to 60 seconds per side

Stretch 6: Foam Roller QL Release (Myofascial Component)

While not a stretch in the traditional sense, foam rolling the QL addresses the myofascial component of QL tightness that static stretching alone does not fully resolve.

How to do it:

  1. Lie on one side with the foam roller positioned at the lateral lower back/hip junction (approximately at the level of the belt line, but on the side)
  2. Use the lower arm and the upper leg (foot on the floor) to control the amount of body weight on the roller
  3. Slowly roll along the lateral lower back from the hip toward the lower rib area
  4. When a tender point is found, pause and hold for 20 to 30 seconds (breathe into the point rather than tensing away from it)
  5. Continue rolling and pausing at tender points
  6. 60 to 90 seconds per side total

Positioning note: The QL is deep to the erector spinae, so the roller needs to be positioned slightly more lateral than a standard erector spinae roll to reach it. If the discomfort is very diffuse and superficial, move the roller slightly more to the back of the body rather than the side.

Sets: 1 to 2 passes per side before or alongside the static stretches

Common Errors and Fixes

Error 1: Stretching Without the Hip Drop Component

What it looks like: The side bend looks correct from the trunk but the hip on the stretching side remains level rather than dropping or pushing away from the ribs.

Fix: Consciously push the hip outward (toward the wall in the standing version, or allow it to drop toward the floor in the supine version) before and during the stretch. This is the element that specifically targets the QL rather than the more superficial lateral muscles.

Error 2: Holding the Breath

What it looks like: The athlete holds the breath during the stretch, preventing the ribcage from descending and the thoracic spine from relaxing into the lateral flexion.

Fix: Breathe slowly throughout. On each exhale, allow the trunk to relax slightly further into the stretch. The QL attaches to the 12th rib, so ribcage movement during breathing directly assists the stretch.

Error 3: Stretching the Wrong Side

What it looks like: The athlete stretches the side of pain rather than the side of tightness (which is often on the opposite side in referred pain presentations).

Why this matters: QL pain on the right side is sometimes caused by left QL tightness that is pulling the pelvis into a lateral tilt, compressing the right QL secondarily. If unilateral QL stretching consistently does not resolve the discomfort on one side, try stretching the opposite side and reassess.

Error 4: Insufficient Hold Duration

What it looks like: Each position is held for 10 to 15 seconds before moving on.

Fix: The QL is a deep muscle with high resting tone. Holds of at least 30 to 45 seconds are needed for the muscle to release. The 60 to 90 second holds used in the supine version are appropriate for the QL specifically.

Programming QL Stretches

For acute QL tightness (after a long day of sitting):

  • Supine QL stretch (most gentle): 2 x 90 seconds per side
  • Seated QL stretch: 2 x 45 seconds per side throughout the day

For chronic QL tightness:
Daily stretching across two to three positions, 3 sets of 45 to 60 seconds per position per side. The foam roller release before the static stretches improves the tissue response.

Alongside core strengthening:
QL stretching is most effective when combined with core and glute strengthening. As covered in the anti extension core exercises article on this site, developing the deep core stabilisers reduces the compensatory overload on the QL that perpetuates the tightness cycle.

Frequency for meaningful improvement:
Daily stretching produces the fastest improvement in QL tightness. The QL is continuously loaded during all upright activity, so brief periods of stretching must compete with many hours of loading. Once or twice weekly stretching is insufficient for persistent QL tightness.

Frequently Asked Questions

How do I know if my QL is tight or if my lower back pain is something else?
QL tightness typically presents as a deep, aching lateral lower back pain that is worse on one side, worsens with prolonged sitting or standing, and improves with movement. Pain that radiates down the leg below the knee, pain accompanied by numbness or tingling, or pain that is worsened by stretching rather than relieved by it suggests a different cause and warrants physiotherapy assessment.

Why does only one side of my QL feel tight?
Unilateral QL tightness is very common and usually reflects asymmetric loading — sleeping consistently on one side, carrying bags on one shoulder, a leg length discrepancy, or sport-specific patterns (right-handed golfers and tennis players often develop left QL tightness from the rotational demands of their sport). Addressing the underlying asymmetric loading alongside the stretching produces better long-term results.

How long does it take to release a tight QL?
Acute QL tightness (from a single long day of sitting or a specific activity) can improve meaningfully within a single stretching session of 10 to 15 minutes. Chronic QL tightness that has developed over weeks or months typically requires 4 to 8 weeks of daily stretching before sustained improvement is felt. Combining stretching with core strengthening and addressing the underlying postural or movement causes produces faster and more lasting results.