title: Accuracy of a digital weight scale relative to the nintendo wii in measuring limb load asymmetry.
abstract: [Purpose] The aim of the present study was to investigate the accuracy of a digital weight scale relative to the Wii in limb loading measurement during static standing. [Methods] This was a cross-sectional study conducted at a public university teaching hospital. The sample consisted of 24 participants (12 with osteoarthritis and 12 healthy) recruited through convenient sampling. Limb loading measurements were obtained using a digital weight scale and the Nintendo Wii in static standing with three trials under an eyes-open condition. The limb load asymmetry was computed as the symmetry index. [Results] The accuracy of measurement with the digital weight scale relative to the Nintendo Wii was analyzed using the receiver operating characteristic (ROC) curve and Kolmogorov-Smirnov test (K-S test). The area under the ROC curve was found to be 0.67. Logistic regression confirmed the validity of digital weight scale relative to the Nintendo Wii. The D statistics value from the K-S test was found to be 0.16, which confirmed that there was no significant difference in measurement between the equipment. [Conclusion] The digital weight scale is an accurate tool for measuring limb load asymmetry. The low price, easy availability, and maneuverability make it a good potential tool in clinical settings for measuring limb load asymmetry.
authors.affiliation: Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia.
authors.forename: Ns Senthil
authors.initials: NS
authors.lastname: Kumar
authors.affiliation: Department of Biomedical Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia.
authors.forename: Baharudin
authors.initials: B
authors.lastname: Omar
authors.affiliation: Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia.
authors.forename: Leonard H
authors.initials: LH
authors.lastname: Joseph
authors.affiliation: Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia.
authors.forename: Nor
authors.initials: N
authors.lastname: Hamdan
authors.affiliation: Department of Orthopedic and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Malaysia.
authors.forename: Ohnmar
authors.initials: O
authors.lastname: Htwe
authors.affiliation: Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia.
authors.forename: Nursalbiyah
authors.initials: N
authors.lastname: Hamidun
keywords: Accuracy; Digital weight scale; Nintendo Wii Fit