Journal of Rehabilitation Research & Development (JRRD)

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Volume 51 Number 4, 2014
   Pages 591 — 598

Abstract — Reliability, agreement, and validity of digital weighing scale with MatScan in limb load measurement

Senthil N. S. Kumar, MSc;1 Baharudin Omar, PhD;1 Ohnmar Htwe, MD;2 Leonard H. Joseph, MsPT;1* ­Jagannathan Krishnan, PhD;3 Ali Jafarzedah Esfehani, MD;1 Lee L. Min, BScPT (Hons)1

1Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia; 2Department of Orthopedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia; 3Faculty of Chemical Engineering, MARA University of Technology, Shah Alam, Malaysia

Abstract — Limb loading measurements serve as an objective evaluation of asymmetrical weight bearing in the lower limb. Digital weighing scales (DWSs) could be used in clinical settings for measurement of static limb loading. However, ambiguity exists whether limb loading measurements of DWSs are comparable with a standard tool such as MatScan. A cross-­sectional study composed of 33 nondisabled participants was conducted to investigate the reliability, agreement, and validity of DWSs with MatScan in static standing. Amounts of weight distribution and plantar pressure on the individual lower limb were measured using two DWSs (A, B) and MatScan during eyes open (EO) and eyes closed (EC) conditions. The results showed that intra- and interrater reliability (3, 1) were excellent (0.94–0.97) within and between DWS A and B. Bland-Altman plot revealed good agreement between DWS and MatScan in EO and EC conditions. The area under the receiver operating characteristic curve was significant and identified as 0.68 (p = 0.01). The measurements obtained with DWSs are valid and in agreement with MatScan measurements. Hence, DWSs could be used interchangeably with MatScan and could provide clinicians an objective measurement of limb loading suitable for clinical settings.

Key words: agreement, asymmetry, digital weighing scale, limb loading, measurement, plantar pressure distribution, rehabilitation, reliability, validity, weight distribution.


View HTML ¦ View PDF ¦ Contents Vol. 51, No.4

This article and any supplementary material should be cited as follows:
Kumar SN, Omar B, Htwe O, Joseph LH, Krishnan J, Jafarzedah Esfehani A, Min LL. Reliability, agreement, and validity of digital weighing scale with MatScan in limb load measurement. J Rehabil Res Dev. 2014;51(4): 591–98.
http://dx.doi.org/10.1682/JRRD.2013.07.0166
ResearcherID/ORCID: Leonard H. Joseph, MsPT: E-9345-2014; Senthil N. S. Kumar, MSc: E-9340-2014
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