Publikation: The work to swing limbs in humans versus chimpanzees and its relation to the metabolic cost of walking
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Compared to their closest ape relatives, humans walk bipedally with lower metabolic cost (C) and less mechanical work to move their body center of mass (external mechanical work, WEXT). However, differences in WEXT are not large enough to explain the observed lower C: humans may also do less work to move limbs relative to their body center of mass (internal kinetic mechanical work, WINT,k). From published data, we estimated differences in WINT,k, total mechanical work (WTOT), and efficiency between humans and chimpanzees walking bipedally. Estimated WINT,k is ~ 60% lower in humans due to changes in limb mass distribution, lower stride frequency and duty factor. When summing WINT,k to WEXT , between-species differences in efficiency are smaller than those in C; variations in WTOT correlate with between-species, but not within-species, differences in C. These results partially support the hypothesis that the low cost of human walking is due to the concerted low WINT,k and WEXT.
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LUCIANO, Francesco, Luca RUGGIERO, Alberto E. MINETTI, Gaspare PAVEI, 2024. The work to swing limbs in humans versus chimpanzees and its relation to the metabolic cost of walking. In: Scientific Reports. Springer. 2024, 14, 8970. eISSN 2045-2322. Verfügbar unter: doi: 10.1038/s41598-024-59171-8BibTex
@article{Luciano2024-04-18swing-71240, year={2024}, doi={10.1038/s41598-024-59171-8}, title={The work to swing limbs in humans versus chimpanzees and its relation to the metabolic cost of walking}, volume={14}, journal={Scientific Reports}, author={Luciano, Francesco and Ruggiero, Luca and Minetti, Alberto E. and Pavei, Gaspare}, note={Article Number: 8970} }
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