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The reliability and validity of the Saliba Postural Classification System
Cristiana Kahl Collins1, Vicky Saliba Johnson2, Ellen M Godwin1
1Physical Therapy Department, Long Island University, 1 University Plaza, Brooklyn 11201, NY, USA.
The Journal of Manual & Manipulative Therapy
|August 26, 2016
Summary
The Saliba Postural Classification System (SPCS) shows good reliability among testers and is a valid tool for assessing posture. It demonstrates substantial agreement in classifying postural deviations.
Area of Science:
- Biomechanics
- Kinesiology
- Physical Therapy
Background:
- Postural assessment is crucial in physical therapy for diagnosing and treating musculoskeletal conditions.
- Standardized systems are needed to ensure consistent and reliable evaluation of posture.
- The Saliba Postural Classification System (SPCS) is a novel tool for postural assessment.
Purpose of the Study:
- To evaluate the inter- and intra-tester reliability of the Saliba Postural Classification System (SPCS).
- To determine the validity of the SPCS by comparing postural assessments with force plate measurements.
Main Methods:
- Two physical therapists assessed the posture of 100 participants using the SPCS for reliability.
- Fifty-four participants underwent validity testing involving force plate analysis during habitual and corrected postures.
- Vertical ground reaction force (VGRF) was measured during applied forces until postural give was perceived.
Main Results:
- Inter-tester reliability showed 75% agreement (Kappa = 0.64).
- Intra-tester reliability demonstrated 87% agreement (Kappa = 0.8) and 80% agreement (Kappa = 0.706).
- Significantly higher peak vertical forces were applied in corrected postures, indicating greater stability.
Conclusions:
- The SPCS exhibits substantial inter- and intra-tester reliability.
- The system is largely valid, supported by increased force required to elicit postural give in corrected positions.
- Further research correlating SPCS findings with clinical diagnoses is recommended.
