Persistence, not avoidance, is associated with low back pain-An observational cohort study.

Area of Science:

• Musculoskeletal Health
• Pain Management
• Psychosomatic Medicine

Background:

• Low back pain (LBP) is a complex condition with variable recovery trajectories.
• Avoidance and persistence behaviors are hypothesized to mediate pain chronicity by linking psychosocial factors and biomechanics.
• Maladaptive musculoskeletal changes can lead to movement control impairment (MCI).

Purpose of the Study:

• To investigate avoidance and persistence behaviors and MCI in individuals with acute LBP over a one-year period.
• To explore the association between these behaviors and MCI with pain persistence.
• To understand the longitudinal course of these factors in acute LBP.

Main Methods:

• Observational cohort study involving 165 participants with acute LBP.
• Data collected at five time points: baseline (≤1 month), 2, 3, 6, and 12 months.
• Linear mixed-effects regression models used to analyze self-reported outcomes and MCI assessments.

Main Results:

• A one-point increase in persistence scores was associated with a 3.31-point increase in pain intensity, interacting with state anxiety over time (p=0.05).
• No significant association was found between avoidance behavior at baseline and pain intensity or MCI.
• Movement control impairment (MCI) did not show a significant association with pain persistence in this model.

Conclusions:

• Persistence in usual activities despite pain and distress may contribute to chronic LBP.
• A multidimensional therapeutic approach is needed, integrating physical and psychological factors.
• Screening for activity patterns (both maladaptive and adaptive) is essential for effective LBP management and preventing chronicity.