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Development and initial validation of the Seated Posture Scale

Development and initial validation of the Seated Posture Scale. Lelia Barks, PhD, ARNP; Stephen L. Luther, PhD; Lisa M. Brown, PhD; Brian Schulz, PhD; Mary Elizabeth Bowen, PhD; Gail Powell-Cope, PhD, ARNP. Aim Develop and validate the Seated Posture Scale (SPS).

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Development and initial validation of the Seated Posture Scale

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  1. Development and initial validation of the Seated Posture Scale Lelia Barks, PhD, ARNP; Stephen L. Luther, PhD; Lisa M. Brown, PhD; Brian Schulz, PhD; Mary Elizabeth Bowen, PhD; Gail Powell-Cope, PhD, ARNP

  2. Aim • Develop and validate the Seated Posture Scale (SPS). • Rapid, low-burden, paper-pencil assessment of wheelchair seated posture. • Relevance • Except for interface pressure and pressure ulcer development, little is known about effects of wheelchair seated posture on health outcomes.

  3. Method • Prospective design and convenience sample: • 49 older wheelchair users receiving rehabilitation services in community living center. • Main measures: • SPS. • Modified Ashworth Scale. • Barthel Index. • Visual Descriptor Scale. • Scale-Content Validity Index. • Cronbach alpha. • Test-retest reliability.

  4. Results • Content validity: • Reviewed by 6 experts in field. • Construct validity: • Total SPS score for sample correlated: • Positively with physical function (Barthel Index). • Negatively with muscle tone (Modified Ashworth Scale). • Internal consistency: • 0.66 (Cronbach alpha). • Test-retest reliability: • 0.89 to 0.99 (Pearson product-moment correlations.

  5. Conclusion • Results provide strong preliminary support for validity and reliability of SPS. • Research is ongoing to further refine SPS. • Future use may include evaluation of wheelchair seated posture in outcomes research and clinical settings.

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