Exercise With Ankylosing Spondylitis: Staying Mobile With a Fusing Spine

When your spine wants to fuse, movement becomes medicine. Ankylosing spondylitis (AS) causes inflammation that can progressively stiffen and fuse the vertebrae—but regular exercise is one of the most powerful tools to maintain mobility, reduce pain, and preserve function. Here's how to keep moving with AS.

Why Exercise Is Critical for AS

Mobility Preservation:

• Maintains spinal range of motion
• Prevents or slows fusion in flexible positions
• Keeps joints moving

Pain Reduction:

• Reduces stiffness (especially morning stiffness)
• Decreases pain for many people
• Anti-inflammatory effects of exercise

Posture Protection:

• Counteracts forward stooping tendency
• Strengthens postural muscles
• Helps maintain upright position

Overall Health:

• Improves cardiovascular fitness
• Supports mental health
• Maintains functional independence
• Improves sleep quality

The Evidence: Exercise is recommended in all AS treatment guidelines. It's considered as important as medication for long-term outcomes.

The AS Exercise Priority: Maintain What You Have

The Key Principle: If your spine fuses, it fuses in whatever position it's usually in. Regular movement and good posture help ensure that if fusion occurs, it happens in a functional position.

Daily Movement Is Non-Negotiable: Even 10-15 minutes of stretching and mobility work daily makes a significant difference over years.

Best Exercises for Ankylosing Spondylitis

Swimming

Often considered ideal:

• Supports the spine (buoyancy)
• Full range of motion without impact
• Excellent cardiovascular workout
• Works the whole body
• Warm water soothes stiffness

Stretching and Mobility

The foundation of AS exercise:

• Spinal extension exercises
• Chest openers
• Hip flexor stretches
• Rotation movements
• Should be done daily

Yoga

Particularly beneficial:

• Improves flexibility
• Emphasizes posture
• Mind-body benefits
• Many AS-appropriate modifications
• Reduces stress

Pilates

Excellent for AS:

• Core strengthening
• Postural awareness
• Controlled movements
• Spinal mobility focus
• Can be adapted

Walking

Simple and effective:

• Maintains cardiovascular fitness
• Weight-bearing (good for bones)
• Easy to do daily
• Upright posture practice

Cycling

Good cardio with considerations:

• Low impact
• Good for fitness
• Watch posture—avoid hunching
• Upright or recumbent bikes may be better than road bikes

Essential Daily Stretches for AS

Do these every day—ideally morning and evening:

Chest Stretch (Doorway):

1. Stand in doorway
2. Place forearms on frame
3. Step through gently
4. Feel stretch across chest
5. Hold 30 seconds

Corner Stretch:

1. Face corner of room
2. Hands on walls at shoulder height
3. Lean into corner
4. Opens chest and shoulders
5. Hold 30 seconds

Cat-Cow:

1. On hands and knees
2. Arch back up (cat)
3. Drop belly, lift head (cow)
4. Move slowly between positions
5. 10-15 repetitions

Prone Press-Up (Cobra):

1. Lie face down
2. Hands under shoulders
3. Press up, arching back
4. Keep hips on floor
5. Hold 5-10 seconds, repeat 10 times

Rotation Stretch:

1. Sit or lie down
2. Gently rotate spine
3. Look over shoulder
4. Hold 15-30 seconds each side

Hip Flexor Stretch:

1. Lunge position
2. Back knee down
3. Push hips forward
4. Feel stretch in front of hip
5. Hold 30 seconds each side

Chin Tucks:

1. Sit or stand tall
2. Pull chin back (make "double chin")
3. Hold 5-10 seconds
4. 10-15 repetitions

Strengthening for AS

Postural Muscles:

• Back extensors
• Core stabilizers
• Scapular muscles
• Hip extensors

Key Exercises:

Prone Back Extension:

1. Lie face down
2. Lift chest off floor
3. Keep neck neutral
4. Hold 5 seconds
5. 10-15 repetitions

Bird Dog:

1. On hands and knees
2. Extend opposite arm and leg
3. Keep spine neutral
4. Hold 5 seconds
5. 10 each side

Rows:

1. Strengthen upper back
2. Pull shoulder blades together
3. Resistance band or weights
4. 10-15 repetitions

Bridges:

1. Lie on back, knees bent
2. Lift hips toward ceiling
3. Squeeze glutes at top
4. Hold 5 seconds
5. 10-15 repetitions

Exercises to Approach Carefully

High-Impact Activities:

• May stress an inflamed spine
• Running on hard surfaces
• Jumping
• Contact sports

Extreme Flexion:

• Forward folds that round the spine
• Sit-ups and crunches
• May encourage poor posture

Heavy Spinal Loading:

• Very heavy squats or deadlifts
• Overhead pressing with excessive weight
• Exercises that compress the spine

Neck Exercises: If cervical spine is involved:

• Avoid extreme neck positions
• No heavy loading on neck
• Gentle mobility only

Managing Flares

During Flares:

• Continue gentle movement if possible
• Reduce intensity significantly
• Focus on stretching and mobility
• Swimming often tolerable
• Don't stop completely if you can help it

Complete Rest: May be necessary for severe flares, but return to movement as soon as possible.

After Flares:

• Gradually rebuild activity
• Start with stretching and mobility
• Progress to strengthening and cardio

Building Your Program

Daily (Non-Negotiable):

• Stretching routine (15-20 minutes)
• Postural awareness throughout day

Weekly:

• Cardiovascular exercise: 3-5 days, 20-30+ minutes
• Strengthening: 2-3 days
• Swimming if available: 1-2 times

Sample Week:

• Monday: Swimming + stretching
• Tuesday: Strength training + stretching
• Wednesday: Walking/cycling + stretching
• Thursday: Yoga or Pilates
• Friday: Swimming or cardio + stretching
• Saturday: Longer walk or hike + stretching
• Sunday: Gentle stretching and rest

Posture Throughout the Day

AS tends to pull you into forward flexion. Fight it:

• Stand tall, shoulders back
• Avoid prolonged sitting
• Use lumbar support when sitting
• Sleep on firm mattress, minimal pillow
• Consider sleeping on back or stomach (if comfortable)
• Take breaks to stand and stretch
• Set posture reminders

Workstation Ergonomics:

• Monitor at eye level
• Keyboard/mouse at comfortable height
• Take breaks every 30-60 minutes
• Standing desk option if possible

Working With Healthcare Providers

Rheumatologist:

• Manages medication and disease activity
• Monitors progression
• Coordinates care

Physical Therapist:

• Ideally experienced with AS
• Individualized exercise program
• Manual therapy
• Posture training

Consider:

• AS-specific exercise programs
• Group classes for AS patients
• Online resources from AS organizations

Special Considerations

Chest/Rib Involvement:

• Chest expansion exercises are important
• Deep breathing exercises
• Monitor for breathing difficulties

Eye Involvement (Uveitis):

• May need to avoid certain positions
• Inversions could be problematic
• Follow ophthalmologist guidance

Heart Involvement:

• Some AS patients have cardiac issues
• Get clearance for intense exercise
• Know warning signs

Osteoporosis Risk:

• AS increases fracture risk
• Weight-bearing exercise helps
• Avoid high-impact and fall risks
• Discuss with doctor

The Long View

AS Is a Marathon:

• Exercise benefits compound over years
• Consistency matters more than intensity
• Daily stretching pays dividends decades later
• Maintaining mobility now prevents disability later

Even With Fusion:

• Continue exercising unfused areas
• Maintain fitness for overall health
• Protect posture in unfused segments
• Exercise remains beneficial

The Bottom Line

Ankylosing spondylitis makes exercise essential, not optional. Your spine may want to fuse—movement helps keep it mobile and ensures the best possible posture if fusion occurs.

Stretch daily. This is non-negotiable. Swim if you can. Strengthen your postural muscles. Stand tall. Move often.

Medication treats inflammation. Exercise maintains function. You need both. The time you invest in daily stretching and movement is an investment in your future mobility and independence.

Your spine may be stiff, but you don't have to be still. Keep moving—your future self will thank you.