Reliability of a pressure pain threshold protocol: secondary analysis of a longitudinal trial with cluster randomization

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dc.contributor.advisorLeppe Zamora, Jaime
dc.contributor.authorAguila Humeres, Pedro
dc.coverage.spatialSantiago
dc.date.accessioned2026-01-30T14:29:19Z
dc.date.available2026-01-30T14:29:19Z
dc.date.issued2025
dc.descriptionActividad de Grado presentada a la Facultad de Medicina de la Universidad del Desarrollo para optar al grado académico de Magíster en Terapia Física y Rehabilitación (MAKI)
dc.description.abstractPressure Pain Threshold (PPT) measurement is a clinically useful method for assessing pain sensitivity when applied with a standardized protocol. However, little is known about the longitudinal stability of reliability estimates when PPT protocols are embedded in randomized controlled trials. This study aimed to evaluate the intra-rater reliability of a standardized digital algometry protocol for PPT measurement in office workers over a six-month follow-up. A secondary analysis was conducted from a cluster randomized controlled trial with office workers, where a standardized PPT protocol was applied to the neck, forearm, and lower leg. Measurements were taken bilaterally with three repetitions per site. Intra-rater reliability was assessed using ICC (Model 3, k), along with the Standard Error of Measurement (SEM) and Minimal Detectable Change (MDC), calculated at baseline, three, and six months, for both intervention and control groups. ICC values ranged from 0.86 to 0.95, indicating good to excellent reliability across all time points and body regions. SEM ranged from 0.20 to 0.49, and MDC from 0.46 to 1.12. These values remained consistent across follow-up periods in both groups, despite expected variability due to the intervention. The PPT protocol demonstrated high intrarater reliability and stable measurement properties over time, supporting its use in longitudinal assessments of pain sensitivity in occupational and clinical settings.
dc.format.extent41 p.
dc.identifier.urihttps://hdl.handle.net/11447/10547
dc.language.isoen
dc.publisherUniversidad del Desarrollo. Facultad de Medicina
dc.subjectDolor
dc.subjectEvaluación
dc.subjectAlgómetro de presión
dc.subject098001S
dc.titleReliability of a pressure pain threshold protocol: secondary analysis of a longitudinal trial with cluster randomization
dc.typeThesis
dcterms.accessRightsPrivado

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