A comparative study of single-leg ground reaction forces in running lizards

McElroy, Eric J., Wilson, Robbie, Biknevicius, Audrone R. and Reilly, Stephen M. (2014) A comparative study of single-leg ground reaction forces in running lizards. Journal of Experimental Biology, 217 5: 735-742. doi:10.1242/jeb.095620


Author McElroy, Eric J.
Wilson, Robbie
Biknevicius, Audrone R.
Reilly, Stephen M.
Title A comparative study of single-leg ground reaction forces in running lizards
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
Publication date 2014-03-01
Year available 2013
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1242/jeb.095620
Open Access Status DOI
Volume 217
Issue 5
Start page 735
End page 742
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher The Company of Biologists
Language eng
Abstract The role of different limbs in supporting and propelling the body has been studied in many species with animals appearing to have either similarity in limb function or differential limb function. Differential hindlimb versus forelimb function has been proposed as a general feature of running with a sprawling posture and as benefiting sprawled postured animals by enhancing maneuvering and minimizing joint moments. Yet only a few species have been studied and thus the generality of differential limb function in running animals with sprawled postures is unknown. We measured the limb lengths of seven species of lizard and their single-limb three-dimensional ground reaction forces during high-speed running. We found that all species relied on the hindlimb for producing accelerative forces. Braking forces were forelimb dominated in four species and equally distributed between limbs in the other three. Vertical forces were dominated by the hindlimb in three species and equally distributed between the forelimb and hindlimb in the other four. Medial forces were dominated by the hindlimb in four species and equally distributed in the other three, with all Iguanians exhibiting hindlimbbiased medial forces. Relative hindlimb to forelimb length of each species was related to variation in hindlimb versus forelimb medial forces; species with relatively longer hindlimbs compared with forelimbs exhibited medial forces that were more biased towards the hindlimbs. These results suggest that the function of individual limbs in lizards varies across species with only a single general pattern (hindlimb-dominated accelerative force) being present.
Keyword Ground reaction force
Lizard
Locomotion
Morphology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 6 November 2013

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Official 2014 Collection
School of Biological Sciences Publications
 
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