title: Reliability, agreement, and validity of digital weighing scale with MatScan in limb load measurement.
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.
authors.affiliation: Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
authors.forename: Senthil N S
authors.initials: SN
authors.lastname: Kumar
authors.forename: Baharudin
authors.initials: B
authors.lastname: Omar
authors.forename: Ohnmar
authors.initials: O
authors.lastname: Htwe
authors.forename: Leonard H
authors.initials: LH
authors.lastname: Joseph
authors.forename: Jagannathan
authors.initials: J
authors.lastname: Krishnan
authors.forename: Ali
authors.initials: A
authors.lastname: Jafarzedah Esfehani
authors.forename: Lee L
authors.initials: LL
authors.lastname: Min
mesh_terms: D000368:Aged; D019540:Area Under Curve; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D011187:Posture; D012372:ROC Curve; D015203:Reproducibility of Results; D016474:Weight-Bearing; D014894:Weights and Measures / Q000295:instrumentation*
keywords: agreement; asymmetry; digital weighing scale; limb loading; measurement; plantar pressure distribution; rehabilitation; reliability; validity; weight distribution