Accuracy of a Digital Weight Scale Relative to the Nintendo Wii in Measuring
Limb Load Asymmetry |
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| Authors: | NS Senthil Kumar Baharudin Omar Leonard H Joseph Nor Hamdan Ohnmar Htwe Nursalbiyah Hamidun |
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| Affiliation: | 1) Physiotherapy Program, School of Rehabilitation Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia;2) Department of Biomedical Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Malaysia;3) Department of Orthopedic and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Malaysia |
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| Abstract: | [Purpose] The aim of the present study was to investigate the accuracy of a digitalweight scale relative to the Wii in limb loading measurement during static standing.[Methods] This was a cross-sectional study conducted at a public university teachinghospital. The sample consisted of 24 participants (12 with osteoarthritis and 12 healthy)recruited through convenient sampling. Limb loading measurements were obtained using adigital weight scale and the Nintendo Wii in static standing with three trials under aneyes-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 wasanalyzed using the receiver operating characteristic (ROC) curve and Kolmogorov-Smirnovtest (K-S test). The area under the ROC curve was found to be 0.67. Logistic regressionconfirmed the validity of digital weight scale relative to the Nintendo Wii. The Dstatistics value from the K-S test was found to be 0.16, which confirmed that there was nosignificant difference in measurement between the equipment. [Conclusion] The digitalweight scale is an accurate tool for measuring limb load asymmetry. The low price, easyavailability, and maneuverability make it a good potential tool in clinical settings formeasuring limb load asymmetry.Key words: Accuracy, Digital weight scale, Nintendo Wii Fit |
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