Giant Galápagos tortoises walk without inverted pendulum mechanical-energy exchange

Journal of Experimental Biology

Volumn 208, Issue 8, 2005, Pages 1489-1494

  Zani, Peter A ^a   Gottschall, Jinger S ^a,b   Kram, Rodger ^a  

^a UNIVERSITY OF COLORADO   (United States)

^b EMORY UNIVERSITY SCHOOL OF MEDICINE   (United States)

Author keywords

Biomechanics; Geochelone elephantopus; Ground reaction forces; Locomotion; Mechanical energy recovery

Indexed keywords

ANIMALIA; ELEPHANTOPUS; GEOCHELONE NIGRA; TESTUDINES; TESTUDINIDAE;

ANIMAL; ARTICLE; BIOMECHANICS; BIOPHYSICS; COMPARATIVE STUDY; ECUADOR; ENERGY METABOLISM; GAIT; PHYSIOLOGY; TURTLE; WALKING;

ANIMALS; BIOMECHANICS; BIOPHYSICS; ECUADOR; ENERGY METABOLISM; GAIT; TURTLES; WALKING;

EID: 18944378256     PISSN: 00220949     EISSN: None     Source Type: Journal    
DOI: 10.1242/jeb.01554     Document Type: Article

References (30)

1. Abacus Concepts Inc. (1991). SuperANOVA. Berkeley: Abacus Concepts Inc.
2. Ahn, A. N., Furrow, E. and Biewener, A. A. (2004). Walking and running in the red-legged running frog, Kassina maculata. J. Exp. Biol. 207, 399-410.
3. Autumn, K., Farley, C. T., Emshwiller, M. and Full, R. J. (1997). Low cost of locomotion in the banded gecko: a test of the nocturnality hypothesis. Physiol. Zool. 70, 660-669.
4. Baudinette, R. V., Miller, A. M. and Sarre, M. P. (2000). Aquatic and terrestrial locomotory energetics in a toad and a turtle: a search for generalisations among ectotherms. Physiol. Biochem. Zool. 73, 672-682.
5. Cavagna, G. A. (1975). Force platforms as ergometers. J. Appl. Physiol. 39, 174-179.
6. Cavagna, G. A., Heglund, N. C. and Taylor, C. R. (1977). Mechanical work in terrestrial locomotion: two basic mechanisms for minimizing energy expenditure. Am. J. Physiol. 233, R243-R261.
7. Cavagna, G. A., Thys, H. and Zamboni, A. (1976). The sources of external work in level walking and running. J. Physiol. 262, 639-657.
8. Darwin, C. (1839). Voyage of HMS Beagle. London: H. Colburn.
9. Donelan, J. M., Kram, R. and Kuo, A. D. (2002). Simultaneous positive and negative external mechanical work in human walking. J. Biomech. 35, 117-124.
10. Emshwiller, M. G. and Gleeson, T. T. (1997). Temperature effects on aerobic metabolism and terrestrial locomotion in American alligators. J. Herpetol. 31, 142-147.
11. Farley, C. T. and Ko, T. C. (1997). Mechanics of locomotion in lizards. J. Exp. Biol. 200, 2177-2188.
12. Finkler, M. S. and Claussen, D. L. (1997). Use of the tail in terrestrial locomotor activities of juvenile Chelydra serpentina. Copeia 1997, 884-887.
13. Full, R. J. (1989). Mechanics and energetics of terrestrial locomotion: bipeds to polypeds. In Energy Transformations in Cells and Organisms (ed. W. Wieser and E. Gnaiger), pp. 175-182. Stuttgart: Georg Thieme Verlag.
14. Goslow, G. E., Jr, Seeherman, H. J., Taylor, C. R., McCutchin, M. N. and Heglund, N. C. (1981). Electrical activity and relative length changes of dog limb muscles as a function of speed and gait. J. Exp. Biol. 94, 15-42.
15. Grabowski, A., Farley, C. T. and Kram, R. (2005). Independent metabolic costs of supporting body weight and accelerating body mass during walking. J. App. Physiol. 98, 579-583.
16. Griffin, T. M. and Kram, R. (2000). Penguin waddling is not wasteful. Nature 408, 929.
17. Griffin, T. M., Main, R. P. and Farley, C. T. (2004). Biomechanics of quadrupedal walking: how do four-legged animals achieve inverted pendulum-like movements? J. Exp. Biol. 207, 3545-3558.
18. Griffin, T. M., Roberts, T. J. and Kram, R. (2003). Metabolic cost of generating muscular force in human walking: insights from load-carrying and speed experiments. J. Appl. Physiol. 95, 172-183.
19. Hildebrand, M. (1985). Walking and running. In Functional Vertebrate Morphology (ed. M. Hildebrand, D. M. Bramble, K. F. Liem and D. B. Wake), pp. 38-57. Cambridge: Belknap Press of Harvard University Press.
20. Inman, V. T., Ralston, H. J. and Todd, F. (1994). Human locomotion. In Human Walking (ed. J. Rose and J. G. Gamble), pp. 1-22. Baltimore: Williams and Wilkins.
21. Jayes, A. S. and Alexander, R. M. (1980). The gaits of chelonians: walking techniques for very low speeds. J. Zool., Lond. 191, 353-378.
22. Kram, R. and Taylor, C. R. (1990). Energetics of running: a new perspective. Nature 346, 265-267.
23. Nwoye, L. O. and Goldspink, G. (1981). Biochemical efficiency and intrinsic shortening speed in selected fast and slow muscles. Experientia 37, 856-857.
24. Pinshow, B., Fedak, M. A. and Schmidt-Nielsen, K. (1977). Terrestrial locomotion in penguins - it costs more to waddle. Science 195, 592-594.
25. Rall, J. A. (1985). Energetic aspects of skeletal muscle contraction: Implications of fiber types. Exerc. Sports Sci. Rev. 13, 33-74.
26. Walker, W. F. (1986). Vertebrate Dissection. Philadelphia: Saunders College Publishing.
27. Willems, P. A., Cavagna, G. A. and Heglund, N. C. (1995). External, internal and total work in human locomotion. J. Exp. Biol. 198, 379-393.
28. Willey, J. S., Biknevicius, A. R., Reilly, S. M. and Earls, K. D. (2004). The tale of the tail: limb function and locomotor mechanics in Alligator mississippiensis. J. Exp. Biol. 207, 553-563.
29. Woledge, R. C. (1968). The energetics of tortoise muscle. J. Physiol. 197, 685-707.
30. Zani, P. A., Sidenblad, K., Van Dijck, A., Gleeson, T. T. and Kram, R. (2004). Low metabolic cost of level locomotion in box turtles (Terrapene ornata): why so inexpensive? Integr. Comp. Biol. 44, 670.