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Three dimensional evaluation of posture in standing with the PosturePrint: an intra- and inter-examiner reliability study

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Ferrantelli, Joseph R. et Perron, Denise L. et Harrison, Deed E. et Harrison, Donald D. et Descarreaux, Martin et Normand, Martin C. et Janik, Tadeusz J. (2007). Three dimensional evaluation of posture in standing with the PosturePrint: an intra- and inter-examiner reliability study. Chiropractic and Osteopathy, 15 (1). p. 15. ISSN 1011-8617 1746-1340 DOI 10.1186/1746-1340-15-15

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Abstract Background Few digitizers can measure the complexity of upright human postural displacements in six degrees of freedom of the head, rib cage, and pelvis. Methods In a University laboratory, three examiners performed delayed repeated postural measurements on forty subjects over two days. Three digital photographs (left lateral, AP, right lateral) of each of 40 volunteer participants were obtained, twice, by three examiners. Examiners placed 13 markers on the subjects before photography and chose 16 points on the photographic images. Using the PosturePrint® internet computer system, head, rib cage, and pelvic postures were calculated as rotations (Rx, Ry, Rz) in degrees and translations (Tx, Tz) in millimeters. For reliability, two different types (liberal = ICC3,1 & conservative = ICC2,1) of inter- and intra-examiner correlation coefficients (ICC) were calculated. Standard error of measurements (SEM) and mean absolute differences within and between observers' measurements were also determined. Results All of the "liberal" ICCs were in the excellent range (> 0.84). For the more "conservative" type ICCs, four Inter-examiner ICCs were in the interval (0.5–0.6), 10 ICCs were in the interval (0.61–0.74), and the remainder were greater than 0.75. SEMs were 2.7° or less for all rotations and 5.9 mm or less for all translations. Mean absolute differences within examiners and between examiners were 3.5° or less for all rotations and 8.4 mm or less for all translations. Conclusion For the PosturePrint® system, the combined inter-examiner and intra-examiner correlation coefficients were in the good (14/44) and excellent (30/44) ranges. SEMs and mean absolute differences within and between examiners' measurements were small. Thus, this posture digitizer is reliable for clinical use.

Type de document: Article
Mots-clés libres: Internal Medicine Rc31-1245 Medicine Diseases of the Musculoskeletal System Rc925-935 Specialties of Internal Medicine Rc581-951
Date de dépôt: 04 avr. 2019 19:28
Dernière modification: 04 avr. 2019 19:28
Version du document déposé: Version officielle de l'éditeur
URI: http://depot-e.uqtr.ca/id/eprint/8629

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