Differential fore- and hindpaw force transmission in the walking rat

Physiology & Behavior
K A Clarke

Abstract

Previous studies suggest that the stance phase of the rat stride is initiated by a soft contact period when the forepaw may engage in tactile sampling of the terrain. However, no ground reaction force measurements have yet been made during rat locomotion. In the dog and other quadrupeds a brief or nonexistent soft contact phase is observed. Therefore, forces and pressures exerted via fore and hindpaws have been measured in the spontaneously walking rat. These indicate while the hindpaw vertical reaction forces are temporally similar to those in the dog, those transmitted via the forepaw are not. At average walking velocities the forepaw soft contact time is some 4 times longer than that of the hindpaw, with values of 207 +/- 25 ms and 52 +/- 12.2 ms (mean +/- 1 SEM) respectively. These data are consistent with the idea of forepaw useage to provide tactile information of the terrain during a prolonged initial soft contact phase, while the hindpaw transmits most of the early vertical ground reaction forces.

References

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Citations

Oct 23, 1997·Physiology & Behavior·K A ClarkeY O Taiwo
Jul 15, 1999·Physiology & Behavior·K A Clarke, J Still
Sep 2, 2003·Journal of Neuroscience Methods·Paul CoulthardBarbara J Pleuvry
Sep 20, 2001·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·N BravenboerP Lips
Apr 13, 2000·The European Journal of Neuroscience·G D Muir, I Q Whishaw
Oct 17, 2012·PloS One·Kristina Ängeby MöllerOdd-Geir Berge
Dec 1, 2007·Biomedizinische Technik. Biomedical Engineering·Katharina KasparHermann J Bail
Oct 10, 2001·Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc·K A ClarkeJ Still
Jan 23, 1999·Research in Veterinary Science·S A CorrM J Gentle
Nov 26, 2008·Physiology & Behavior·Christine M WooleyKevin L Seburn
Apr 25, 2007·Experimental Neurology·Srikanth G Kanagal, Gillian D Muir
Jul 18, 2008·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Lutz ClaesBettina Willie
Dec 16, 2011·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Joel D BoerckelRobert E Guldberg
Jun 12, 2010·Annals of the New York Academy of Sciences·Simon F GiszterUbong Ime Udoekwere
Jan 13, 2006·Behavioural Brain Research·David A E BoltonKarim Fouad
Oct 3, 2003·Acta Orthopaedica Scandinavica·Hans MarkLennart Strömberg
Mar 19, 2011·Clinical Orthopaedics and Related Research·Bettina M WillieLutz Claes
Sep 2, 2017·Journal of Experimental Orthopaedics·N BravenboerP Lips

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