title: Short-Term Repeatability of Stabilometric Assessments.
abstract: The authors evaluated the short-term (within-day, between-days) repeatability of center of pressure (COP) displacements. COP sway area and speed were obtained in the morning and afternoon of two separate days, both with open (EO) and closed (EC) eyes, in 10 healthy adults. Agreement and variability among conditions were tested by ANOVA and Bland-Altman plots. Mode (EO/EC, area: p = .032; speed: p < .004), and day (day1/day2, area: p = .006; speed: p = .02) showed significant differences. The EC condition and the second test day showed the largest values, with medium-large effect sizes. Time-of-day did not influence COP displacements. Speed had better agreement than area (Bland-Altman plots). COP displacements were well reproducible within-day, but had significant between-days variations. COP assessments should be performed in the same session.
authors.affiliation: a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy.
authors.forename: Nicola
authors.initials: N
authors.lastname: Lovecchio
authors.affiliation: a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Zago
authors.affiliation: b Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milano , Italy.|c Unità Clinica e Laboratorio di Ricerche di Riabilitazione Neuromotoria, Ospedale San Luca, Istituto Auxologico Italiano-IRCCS , Milano , Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Perucca
authors.affiliation: a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy.|d Institute of Molecular Bioimaging and Physiology, National Research Council , Segrate , Italy.
authors.forename: Chiarella
authors.initials: C
authors.lastname: Sforza
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001766:Blindness / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D004856:Postural Balance / Q000502:physiology*; D015203:Reproducibility of Results; D055815:Young Adult
keywords: COP; balance; repeatability; sway