Do Lumbar Paravertebral Muscle Properties Show Changes in Mothers with Moderate-Severity Low Back Pain Following a...

Area of Science:

• Physiotherapy
• Musculoskeletal Health
• Postpartum Recovery

Background:

• Cesarean birth (CB) is associated with nonspecific low back pain (NSLBP).
• Muscular tissue properties can indicate physiological or pathological conditions.
• Lumbar paravertebral muscles (LPVMs) are crucial for spinal stability and function.

Purpose of the Study:

• To measure contractile, biomechanical, and viscous properties of LPVMs in postpartum mothers with NSLBP after Cesarean birth.
• To compare these muscle properties between mothers with NSLBP and healthy controls.
• To investigate the relationship between LPVM properties and NSLBP in the postpartum period.

Main Methods:

• A case-control study involving 60 women, divided into 30 cases (post-CB with moderate NSLBP) and 30 controls (healthy, no/mild NSLBP).
• Measurement of muscle tone, relaxation time, creep, stiffness, and elasticity of lumbar paravertebral muscles (LPVMs).
• Statistical analysis including t-tests and regression analysis to compare groups and identify risk factors.

Main Results:

• Significant differences were found in LPVMs' tone, relaxation time, and creep between cases and controls (p < 0.05).
• No significant differences were observed in LPVMs' stiffness and elasticity between the groups (p > 0.05).
• Regression analysis indicated that LPVM properties are strong risk factors for post-CB NSLBP.

Conclusions:

• Post-Cesarean birth mothers with NSLBP exhibit altered contractile (decreased tone) and viscous (increased viscosity) properties of LPVMs.
• Biomechanical properties like stiffness and elasticity of LPVMs showed minimal changes.
• LPVM properties are significant contributors to NSLBP in postpartum women, warranting consideration in clinical assessment and treatment.