The CrossFit Athlete's Guide to Injury Prevention: Lower back
Number 2: Lower back injury risks — and how to train smart enough to avoid them.
CrossFit is one of the most demanding training formats on the planet. It combines Olympic weightlifting, gymnastics, metabolic conditioning, and competitive intensity — often in the same session. It's also one of the most rewarding. But with high demand comes high injury risk, especially when training load, technique, or recovery aren't managed well.
The good news? Most CrossFit injuries are preventable. At Reforge Physio, we work with CrossFit athletes every day — and we see the same patterns come up again and again. This guide breaks down the five most common injury risks in CrossFit and gives you practical, evidence-based strategies to train smarter and stay on the floor.
2. Lower back pain
Lower back pain is extremely common among CrossFit athletes — and often misunderstood. The back is not fragile. In fact, loading the back through proper movement patterns is one of the best things you can do for it. The problem arises when volume exceeds capacity, or when form breaks down under fatigue.
Why it happens
• Repeated flexion under load with a fatigued lumbar spine (think: 50 deadlifts for time)
• Hyperextension in overhead movements due to limited thoracic mobility
• Insufficient core bracing during heavy lifts
• Returning to high-load movements too quickly after a niggle
• Weakness through your back and poor control
How to train smart
• Master your bracing technique — a 360-degree brace (not just sucking in your stomach) before every heavy pull
• Scale deadlifts and cleans when form starts to break down, even mid-WOD
• Build thoracic mobility to reduce lumbar compensation in overhead work
• Treat back niggles early — lower back pain that lingers for more than a week warrants a physio assessment
Reforge tip
The fear of moving with back pain often makes things worse. If you've had an acute flare-up, gentle movement guided by a physio is almost always better than complete rest. We'll help you find what you CAN do while you recover.
