Search Results - "Crompton, R. H"

Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches by Thorpe, S.K.S, Holder, R.L, Crompton, R.H

“…Human bipedalism is commonly thought to have evolved from a quadrupedal terrestrial precursor, yet some recent paleontological evidence suggests that…”
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Assessing mechanical function of the zygomatic region in macaques: validation and sensitivity testing of finite element models by Kupczik, K., Dobson, C. A., Fagan, M. J., Crompton, R. H., Oxnard, C. E., O’Higgins, P.

“…Crucial to the interpretation of the results of any finite element analysis of a skeletal system is a test of the validity of the results and an assessment of…”
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Human bipedal instability in tree canopy environments is reduced by “light touch” fingertip support by Johannsen, L., Coward, S. R. L., Martin, G. R., Wing, A. M., Casteren, A. van, Sellers, W. I., Ennos, A. R., Crompton, R. H., Thorpe, S. K. S.

“…Whether tree canopy habitats played a sustained role in the ecology of ancestral bipedal hominins is unresolved. Some argue that arboreal bipedalism was…”
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Masticatory loading and bone adaptation in the supraorbital torus of developing macaques by Kupczik, K., Dobson, C.A., Crompton, R.H., Phillips, R., Oxnard, C.E., Fagan, M.J., O'Higgins, P.

“…Research on the evolution and adaptive significance of primate craniofacial morphologies has focused on adult, fully developed individuals. Here, we…”
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Why don’t branches snap? The mechanics of bending failure in three temperate angiosperm trees by van Casteren, A, Sellers, W. I, Thorpe, S. K. S, Coward, S, Crompton, R. H, Ennos, A. R

“…Living tree branches are almost impossible to snap. Some show “greenstick fracture”, breaking halfway across before splitting along their length, while others…”
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The biomechanics of leaping in gibbons by Channon, A.J., Crompton, R.H., Günther, M.M., D'Août, K., Vereecke, E.E.

“…Gibbons are skilled brachiators but they are also highly capable leapers, crossing distances in excess of 10 m in the wild. Despite this impressive performance…”
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Morphological analysis of the hindlimb in apes and humans. II. Moment arms by Payne, R. C., Crompton, R. H., Isler, K., Savage, R., Vereecke, E. E., Günther, M. M., Thorpe, S. K. S., D’Août, K.

“…Flexion/extension moment arms were obtained for the major muscles crossing the hip, knee and ankle joints in the orang‐utan, gibbon, gorilla (Eastern and…”
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Analysis of the human and ape foot during bipedal standing with implications for the evolution of the foot by Wang, W.J., Crompton, R.H.

“…The ratio of the power arm (the distance from the heel to the talocrural joint) to the load arm (that from the talocrural joint to the distal head of the…”
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Predicting the metabolic energy costs of bipedalism using evolutionary robotics by Sellers, W I, Dennis, L A, Crompton, R H

“…To understand the evolution of bipedalism among the hominoids in an ecological context we need to be able to estimate the energetic cost of locomotion in…”
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Response to Comment on "Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches" by Crompton, R H, Thorpe, S K S

“…Begun et al . purport to present technical concerns regarding our case for an arboreal origin for terrestrial bipedalism in early hominins, but merely…”
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The role of load‐carrying in the evolution of modern body proportions by Wang, W.‐J., Crompton, R. H.

“…The first unquestionably bipedal early human ancestors, the species Australopithecus afarensis, were markedly different to ourselves in body proportions,…”
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Energy transformation during erect and ‘bent-hip, bent-knee’ walking by humans with implications for the evolution of bipedalism by Wang, W.J., Crompton, R.H., Li, Y., Gunther, M.M.

“…We have previously reported that predictive dynamic modeling suggests that the ‘bent-hip, bent-knee’ gait, which some attribute to Australopithecus afarensis…”
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Locomotion and posture from the common hominoid ancestor to fully modern hominins, with special reference to the last common panin/hominin ancestor by Crompton, R. H., Vereecke, E. E., Thorpe, S. K. S.

“…Based on our knowledge of locomotor biomechanics and ecology we predict the locomotion and posture of the last common ancestors of (a) great and lesser apes…”
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Free vertical moments and transverse forces in human walking and their role in relation to arm-swing by Li, Y, Wang, W, Crompton, R H, Gunther, M M

“…We present force plate data on vertical free moments (force couples in the horizontal plane between the foot and the ground) and on transverse force during…”
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A new method for recording complex positional behaviours and habitat interactions in primates by Myatt, J P, Crompton, R H, Thorpe, S K S

“…In an arboreal habitat, primates have to cope with a complex meshwork of flexible supports in order to obtain food, find mates and avoid predators. To…”
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Variation, mosaicism and degeneracy in the hominin foot by McClymont, J., Davids, K., Crompton, R.H.

“…Abstract The fossil record is scarce and incomplete by nature. Animals and ecological processes devour soft tissue and important bony details over time and,…”
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Does footprint depth correlate with foot motion and pressure? by Bates, K. T., Savage, R., Pataky, T. C., Morse, S. A., Webster, E., Falkingham, P. L., Ren, L., Qian, Z., Collins, D., Bennett, M. R., McClymont, J., Crompton, R. H.

“…Footprints are the most direct source of evidence about locomotor biomechanics in extinct vertebrates. One of the principal suppositions underpinning…”
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Dimensions and moment arms of the hind- and forelimb muscles of common chimpanzees (Pan troglodytes) by Thorpe, Susannah K.S., Crompton, Robin H., GÜNTHER, Michael M., Ker, Robert F., McNeill Alexander, R.

“…This paper supplies quantitative data on the hind‐ and forelimb musculature of common chimpanzees (Pan troglodytes) and calculates maximum joint moments of…”
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The mechanical effectiveness of erect and bent-hip, bent-knee bipedal walking in Australopithecus afarensis by CROMPTON, R. H, LI YU, WANG WEIJIE, GÜNTHER, M, SAVAGE, R

“…It is universally accepted that the postcranial skeleton of the early hominid Australopithecus afarensis shows adaptations, or at least exaptations, towards…”
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Segment inertial properties of primates: New techniques for laboratory and field studies of locomotion by Crompton, R. H., Li, Y., Alexander, R. McN, Wang, W., Gunther, M. M.

“…Studies of the dynamics of locomotor performances depend on knowledge of the distribution of body mass within and between limb segments. However, these data…”
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