The human body is far more adaptable to low back pain than often assumed. Human movement scientist Fangxin Xiao shows that even in the presence of spinal injury or muscle pain, overall movement patterns remain largely unchanged. Instead, the nervous system subtly adjusts the activity of specific back muscles to maintain stability. These insights could lead to improved rehabilitation strategies for people with low back pain.
Active compensation by the body
Low back pain is one of the leading causes of disability worldwide, yet its effects on movement are still not fully understood. Xiao investigated how pain signals (nociception) and spinal instability - both separately and in combination - affect trunk motor control during locomotion.
Her findings reveal a remarkable capacity for adaptation. Even when injury or pain is present, the body maintains its overall movement pattern. The nervous system compensates by fine-tuning the activity of individual back muscles, allowing stable movement to continue.
Beyond what imaging can reveal
Low back pain is often linked to abnormalities seen in spinal imaging. However, Xiao’s research shows that structural degeneration does not automatically imply instability or impaired movement. Even when scans indicate injury or degeneration, movement patterns can remain stable because the body adapts. This highlights the limits of relying solely on imaging for understanding low back pain.
Towards improved rehabilitation
These findings are important for clinicians, physiotherapists, and people living with low back pain. According to Xiao: “Our findings support the idea that treatment decisions should not rely on imaging alone. Understanding how the nervous system adapts is essential.”
By focusing on how the body responds to pain, rather than only on structural damage, rehabilitation approaches may become more effective.
More information on this research.