- -

Existence of an optimum dynamic coefficient of friction and the influence on human gait variability

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Existence of an optimum dynamic coefficient of friction and the influence on human gait variability

Show simple item record

Files in this item

dc.contributor.author Zamora Alvarez, Tomas Augusto es_ES
dc.contributor.author Alcantara Alcover, Enrique es_ES
dc.contributor.author Artacho Ramírez, Miguel Ángel es_ES
dc.contributor.author Valero Martínez, Marta es_ES
dc.date.accessioned 2016-06-02T09:50:11Z
dc.date.available 2016-06-02T09:50:11Z
dc.date.issued 2011-09
dc.identifier.issn 0169-8141
dc.identifier.uri http://hdl.handle.net/10251/65100
dc.description.abstract The existence of a range of optimal coefficient of friction that encompasses safety and comfort has not been addressed before. This paper assesses the existence of such a range and its relationship with the variability of human gait. Six women walked for 15 min over five ceramic tile floorings with friction coefficients (DCOF) ranging from 0.19 to 0.63. Subjective opinions (pain, comfort, etc.) and biomechanical parameters including sagittal plane knee angle, tibia acceleration, and ground reaction forces were gathered. The required coefficient of friction (RCOF) was calculated from ground reaction forces. The results show that as DCOF increases so do reports of pain in the knees and under the metatarsal heads and toes; whereas a low DCOF relates to pain in the thighs and perception of low friction. RCOF showed a quadratic relationship with DCOF indicating the existence of a range of optimal coefficient of friction outside of which walking strategy is modified either to avoid slipping (DCOF 0.55). This result is supported by the results of the analysis of gait variability using non-linear methods. Floors inside the optimal range of friction yielded statistically significant higher entropy for tibia acceleration and knee angle, confirming the hypothesis that gait is more constrained outside that range (i.e. natural variability is reduced).Relevance to the industry: Floor friction is one of the main concerns for the floor industry and for decision makers when choosing public space paving (indoor and outdoor). The false concept 'the more friction the better' can induce manufacturers and technicians to make wrong decisions. This paper can assist the industry produce and select solutions encompassing safety and comfort. © 2011 Elsevier B.V. es_ES
dc.description.sponsorship The authors wish to thank employees from Tau Ceramica, a Spanish tile manufacturer, for their support in this study. Special mention to Javier Portoles and Kike Algora from the TAU innovation department for their personal involvement. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Tau Ceramica es_ES
dc.relation.ispartof International Journal of Industrial Ergonomics es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ceramics es_ES
dc.subject Chaos es_ES
dc.subject Comfort es_ES
dc.subject Entropy es_ES
dc.subject Falls es_ES
dc.subject Floor es_ES
dc.subject Friction es_ES
dc.subject Gait es_ES
dc.subject Biomechanical parameters es_ES
dc.subject Ceramic tile es_ES
dc.subject Coefficient of frictions es_ES
dc.subject Decision makers es_ES
dc.subject Dynamic coefficient of frictions es_ES
dc.subject Friction coefficients es_ES
dc.subject Gait variability es_ES
dc.subject Ground reaction forces es_ES
dc.subject Human gait es_ES
dc.subject Low friction es_ES
dc.subject Metatarsal head es_ES
dc.subject Natural variability es_ES
dc.subject Non-linear methods es_ES
dc.subject Optimal coefficient es_ES
dc.subject Optimal ranges es_ES
dc.subject Public space es_ES
dc.subject Sagittal plane es_ES
dc.subject Walking strategy es_ES
dc.subject Accident prevention es_ES
dc.subject Biomechanics es_ES
dc.subject Ceramic materials es_ES
dc.subject Floors es_ES
dc.subject Health es_ES
dc.subject Industry es_ES
dc.subject Optimization es_ES
dc.subject Tribology es_ES
dc.subject Adult es_ES
dc.subject Article es_ES
dc.subject Building es_ES
dc.subject Falling es_ES
dc.subject Female es_ES
dc.subject Floor friction es_ES
dc.subject Ground reaction force es_ES
dc.subject Human es_ES
dc.subject Human experiment es_ES
dc.subject Knee pain es_ES
dc.subject Metatarsal bone es_ES
dc.subject Musculoskeletal system parameters es_ES
dc.subject Normal human es_ES
dc.subject Optimum dynamic coefficient of friction es_ES
dc.subject Pain es_ES
dc.subject Priority journal es_ES
dc.subject Product safety es_ES
dc.subject Required coefficient of friction es_ES
dc.subject Sagittal plane knee angle es_ES
dc.subject Thigh es_ES
dc.subject Tibia acceleration es_ES
dc.subject Toe es_ES
dc.subject Walking es_ES
dc.subject.classification PROYECTOS DE INGENIERIA es_ES
dc.title Existence of an optimum dynamic coefficient of friction and the influence on human gait variability es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ergon.2011.05.004
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Proyectos de Ingeniería - Departament de Projectes d'Enginyeria es_ES
dc.description.bibliographicCitation Zamora Alvarez, TA.; Alcantara Alcover, E.; Artacho Ramírez, MÁ.; Valero Martínez, M. (2011). Existence of an optimum dynamic coefficient of friction and the influence on human gait variability. International Journal of Industrial Ergonomics. 41(5):410-417. doi:10.1016/j.ergon.2011.05.004 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.ergon.2011.05.004 es_ES
dc.description.upvformatpinicio 410 es_ES
dc.description.upvformatpfin 417 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 41 es_ES
dc.description.issue 5 es_ES
dc.relation.senia 211718 es_ES


This item appears in the following Collection(s)

Show simple item record