Association between movement speed and instability catch kinematics and the differences between individuals with and without chronic low back pain.

Studies reported the existence of instability catch (IC) during trunk flexion in patients with chronic low back pain (CLBP). However, different movement speeds can cause different neuromuscular demands resulting in altered kinematic patterns. In addition, kinematic characterization corresponding to clinical observation of IC is still limited.

The role of an active muscular subsystem in prone instability test during rest and leg raise conditions.

Background: Clinicians commonly used prone instability test (PIT) by assessing the posterior-to-anterior (PA) displacement to identify lumbar instability. Most studies focusing on passive subsystem found greater mobility in lower lumbar (L4-L5) than upper lumbar (L1-L3) spine. However, there is still a lack of evidence to demonstrate the role of active subsystem.

The use of statistical parametric mapping to determine altered movement patterns in people with chronic low back pain.

Kinematics studies have generally focused on the quantity of movement using discrete parameters such as maximum and minimum angles to compare between people with chronic low back pain (CLBP) and healthy individuals. However, discrete parameters cannot be used to fully describe movement patterns and segmental contributions. This study aimed to explore the use of Statistical Parametric Mapping (SPM) to characterize quality of movement by examining if differences in movement patterns exist between groups, and within-group segmental contributions, during active movement tests.

Multifidus Muscle Contractility Deficit Was Not Specific to the Painful Side in Patients with Chronic Low Back Pain During Remission: A Cross-Sectional Study.

Purpose: Morphology studies demonstrated that patients with chronic low back pain (CLBP) have bilateral multifidus muscle (LM) atrophy. This atrophy should result in LM contractility deficit bilaterally. Additionally, a recent study showed the effect of sex on LM thickness.

The inter-rater reliability of clinical observation of prone hip extension and association between aberrant movement and chronic low back pain.

Background: Clinical observation of aberrant movement patterns during prone hip extension (PHE) is commonly used in clinical practice to identify patients with low back pain. It could be clinically useful to identify individuals with chronic low back pain during remission (CLBP) to provide proactive intervention to prevent exacerbation of low back symptoms.

Objectives: This study aimed to establish inter-rater reliability of clinical observation of PHE and association between aberrant movement pattern and CLBP.