title: Validity and reliability of pressure-measurement insoles for vertical ground reaction force assessment in field situations.
abstract: This study aimed to test the validity and reliability of pressure-measurement insoles (medilogic® insoles) when measuring vertical ground reaction forces in field situations. Various weights were applied to and removed from the insoles in static mechanical tests. The force values measured simultaneously by the insoles and force plates were compared for 15 subjects simulating work activities. Reliability testing during the static mechanical tests yielded an average interclass correlation coefficient of 0.998. Static loads led to a creeping pattern of the output force signal. An individual load response could be observed for each insole. The average root mean square error between the insoles and force plates ranged from 6.6% to 17.7% in standing, walking, lifting and catching trials and was 142.3% in kneeling trials. The results show that the use of insoles may be an acceptable method for measuring vertical ground reaction forces in field studies, except for kneeling positions.
authors.affiliation: National Institute of Occupational Health, Department of Work Psychology and Physiology, Oslo, Norway. Electronic address: Markus.Koch@stami.no.
authors.forename: Markus
authors.initials: M
authors.lastname: Koch
authors.affiliation: National Institute of Occupational Health, Department of Work Psychology and Physiology, Oslo, Norway.
authors.forename: Lars-Kristian
authors.initials: LK
authors.lastname: Lunde
authors.affiliation: Technische Universität Braunschweig, Department of Mechanical Engineering, Braunschweig, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Ernst
authors.affiliation: National Institute of Occupational Health, Department of Work Psychology and Physiology, Oslo, Norway.
authors.forename: Stein
authors.initials: S
authors.lastname: Knardahl
authors.affiliation: National Institute of Occupational Health, Department of Work Psychology and Physiology, Oslo, Norway.
authors.forename: Kaj Bo
authors.initials: KB
authors.lastname: Veiersted
mesh_terms: D000328:Adult; D005260:Female; D005528:Foot; D061826:Foot Orthoses; D006801:Humans; D017770:Lifting; D008297:Male; D008875:Middle Aged; D011312:Pressure; D015203:Reproducibility of Results; D012775:Shoes; D014160:Transducers, Pressure / Q000592:standards; D016138:Walking; D016474:Weight-Bearing; D055815:Young Adult
keywords: Pressure-measurement insoles; Vertical force measurement; Work