Apparent mass distribution at the feet of standing subjects exposed to whole-body vibration

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Tarabini, Marco¹; Saggin, Bortolino¹; Scaccabarozzi, Diego¹; Gaviraghi, Davide¹; Moschioni, Giovanni¹

Apparent mass distribution at the feet of standing subjects exposed to whole-body vibration

Ergonomics. May 2013;56(5):842-855

©2013 Taylor & Francis

Affiliations

¹Department of Mechanics, Politecnico di Milano, Via M. d’Oggiono 18/a, 23900 Lecco, Italy
Abstract and keywords

This study was carried out to investigate the influence of the body posture and of the foot support on the apparent mass distribution at the feet of standing subjects exposed to whole-body vibration. The apparent mass was measured at the driving point through a capacitive pressure sensor matrix, which allowed to separate the contributions of the different foot regions. The overall value was also determined using a conventional measurement system based on piezoelectric load cells. Ten male subjects performed 15 tests with three kinds of feet supports (flat rigid, anatomic rigid and flat soft) in five different postures. Static components of the pressure measurements were exploited to identify which fraction of the weight is supported by the rearfoot, the midfoot and the forefoot in the various test configurations. Factorial design of experiments on different response variables showed that the apparent mass is affected by the posture but not by the type of feet contact surface; conversely, the presence of insoles varies with the apparent mass distribution on the different feet parts.

Practitioner Summary: The response of standing subjects to whole-body vibration has always been considered as a global parameter measured at the driving point, neglecting the local phenomena occurring in different foot parts. We have experimentally identified the apparent mass distribution of subjects in different standing postures and with different foot supports.

Keywords: whole-body vibration; modelling physical response; acceleration exposures; back pain
Links

DOI: 10.1080/00140139.2013.776704

PubMed: 23510270

WoS: 000319107300010
History

Received: 2012-08-31

Revised: 2013-02-08

Online: 2013-03-20

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Cited By (18)

Year	Entry
2018	Goggins K, Tarabini M, Lievers B, Eger T. Standing centre of pressure alters the vibration transmissibility response of the foot. In: Proceedings of the 7th American Conference on Human Vibration. June 13-15, 2018; Seattle, WA.33-34.
2021	Moorhead AP, Chadefaux D, Marelli S, Marchetti E, Tarabini M. The effects of vertical whole-body vibration on walking subjects. In: Proceedings of the 8th American Conference on Human Vibration. June 23-25, 2021; Online due to COVID-19.
2021	Chadefaux D, Moorhead AP, Marzaroli P, Marelli S, Marchetti E, Tarabini M. Vibration transmissibility and apparent mass changes from vertical whole-body vibration exposure during stationary and propelled walking. Appl Ergon. January 2021;90:103283.
2014	Tarabini M, Solbiati S, Moschioni G, Saggin B, Scaccabarozzi D. Analysis of non-linear response of the human body to vertical whole-body vibration. Ergonomics. 2014;57(11):1711-1723.
2015	Tarabini M, Saggin B, Scaccabarozzi D. Whole-body vibration exposure in sport: four relevant cases. Ergonomics. 2015;58(7):1143-1150.
2016	Tarabini M, Solbiati S, Saggin B, Scaccabarozzi D. Apparent mass matrix of standing subjects exposed to multi-axial whole-body vibration. Ergonomics. August 2016;59(8):1038-1049.
2019	Goggins KA, Tarabini M, Lievers WB, Eger TR. Standing centre of pressure alters the vibration transmissibility response of the foot. Ergonomics. June 2019;62(9):1202-1213.
2024	Stjernbrandt A, Pettersson H, Vihlborg P, Höper AC, Aminoff A, Wahlström J, Nilsson T. Raynaud’s phenomenon in the feet of Arctic open-pit miners. Int J Circumpolar Health. 2024;83(1):2295576.
2021	Jalali P, Ettefagh MM, Hassannejad R. Recognizing the viscoelastic safe area of work shoe sole in the sitting posture with vibration transmissibility in the vertical direction. Int J Ind Ergon. January 1, 2021;81:103053.
2019	Nawayseh N, Hamdan S. Apparent mass of the standing human body when using a whole-body vibration training machine: effect of knee angle and input frequency. J Biomech. January 3, 2019;82:291-298.
2019	Chadefaux D, Gueguen N, Thouze A, Rao G. 3D propagation of the shock-induced vibrations through the whole lower-limb during running. J Biomech. November 11, 2019;96:109343.
2020	Chadefaux D, Goggins K, Cazzaniga C, Marzaroli P, Marelli S, Katz R, Eger T, Tarabini M. Development of a two-dimensional dynamic model of the foot-ankle system exposed to vibration. J Biomech. January 23, 2020;99:109547.
2019	Marzaroli P, Albanetti A, Negri E, Giberti H, Tarabini M. Design and testing of a 3-DOF robot for studying the human response to vibration. Machines. December 2019;7(4):67.
2021	Tarabini M, Eger T, Goggins K, Moorhead AP, Goi F. Effect of the shoe sole on the vibration transmitted from the supporting surface to the feet. Vibration. 2021;4(4):743-758.
2016	Byrnell HK. Personal Protective Equipment as a Control Strategy to Reduce Foot-Transmitted Vibration [Master's thesis]. Sudbury, ON: Laurentian University; 2016.
2019	Goggins KA. Measuring and Modelling Human Response to Foot-Transmitted Vibration Exposure [PhD thesis]. Sudbury, ON: Laurentian University; 2019.
2015	Solbiati S. Human Body Response to Multi-Axial Dynamical Vibrations [PhD thesis]. Milano, Italy: Politecnico Di Milano; January 2015.
2019	Marzaroli P. Development of Tools and Systems for the Protection of Workers from Foot-Transmitted Whole-Body Vibration [PhD thesis]. Politecnico di Milano; 2019.