Relationship Between Core Muscles Endurance and Saliba’s Posture stability in Patients with Chronic Mechanical Low Back Pain | ||
| Egyptian Journal of Physical Therapy and Rehabilitation | ||
| Articles in Press, Accepted Manuscript, Available Online from 19 October 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejptr.2025.422702.1061 | ||
| Authors | ||
| Sara Abdelfattah Eltelbany* 1; Elsadat Saad Soliman2; Afaf Tahoon3 | ||
| 1Physical therapy specialist at Zwamel General Hospital, Ministry of Health, Egypt | ||
| 2Assistant professor in the Orthopedic Physical Therapy department, Faculty of Physical Therapy, Cairo University | ||
| 3Lecturer in the Orthopedic Physical Therapy department, Faculty of Physical Therapy, Cairo University, Egypt. | ||
| Abstract | ||
| Background: Swayback posture is a common postural dysfunction frequently associated with chronic mechanical low back pain (CMLBP). Core muscle endurance is critical for maintaining spinal stability and proper postural alignment. Objective: This study aimed to investigate the relationship between core muscle endurance and postural dysfunctions within sub-classification 4 of the Saliba Postural Classification System (SPCS) in individuals with CMLBP. Materials Methods: Fifteen adults diagnosed with CMLBP were enrolled. Postural classification was confirmed using Kinovea software. Postural stability was assessed via the elbow flexion test (EFT) and vertical compression test (VCT). Core muscle endurance was evaluated using a battery of standardized tests. Results: Within the SPCS category 4 subgroup, correlational analyses demonstrated significant, moderate to strong positive relationships between EFT and trunk flexion test (r=0.695, P=0.026), trunk extension test (r=0.818, P=0.004), and right-side plank test (r=0.672, P=0.033). The prone plank test showed a significantly strong positive correlation with VCT (r=0.752, P=0.012), but not with EFT (r=0.625, P=0.053). Neither EFT nor VCT exhibited significant correlations with the left-side plank test. VCT demonstrated moderate to strong positive relationships with trunk flexion (r=0.581, P=0.078), trunk extension (r=0.603, P=0.065), right-side plank (r=0.446, P=0.197), and left-side plank tests (r=0.445, P=0.197), although these were not statistically significant. Conclusion: Core endurance exercises focusing on trunk flexion, trunk extension, and right-side plank performance are positively associated with upper-body strength as measured by EFT. Additionally, spinal loading endurance, as assessed by VCT, appears specifically related to prone core stability. These findings support targeted core endurance training to improve postural stability in individuals with swayback posture and CMLBP. | ||
| Keywords | ||
| Chronic mechanical low back pain; Core muscles; Endurance; Saliba's Postural Classification System | ||
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