Results 51 to 60 of about 1,450 (176)

Why do we transition from walking to running? Energy cost and lower leg muscle activity before and after gait transition under body weight support [PDF]

PeerJ, 2019
Background Minimization of the energetic cost of transport (CoT) has been suggested for the walk-run transition in human locomotion. More recent literature argues that lower leg muscle activities are the potential triggers of the walk-run transition.
Daijiro Abe, Yoshiyuki Fukuoka, Masahiro Horiuchi   +2 more
doaj   +2 more sources

Narrative Review on Therapies That Influence Inflammatory Responses During Extremely Premature Perinatal Respiratory Transition

Acta Paediatrica, Volume 115, Issue 9, Page 1847-1860, September 2026.
ABSTRACT Aims and Methods Advances in neonatal care have extended borderline survival to 22–24 post‐conceptional weeks. Present review discusses approaches for prolonging short pregnancies and prevention of serious morbidities in extremely premature infants born before 28 weeks of pregnancy.
Mikko Hallman
wiley   +1 more source

The African ape-like foot of Ardipithecus ramidus and its implications for the origin of bipedalism

eLife, 2019
The ancestral condition from which humans evolved is critical for understanding the adaptive origin of bipedal locomotion. The 4.4 million-year-old hominin partial skeleton attributed to Ardipithecus ramidus preserves a foot that purportedly shares ...
Thomas Cody Prang
doaj   +1 more source

Frequency of arboreality is correlated with longer hand skeletons in Gorilla: Analysis of a new skeletal sample of Bwindi mountain gorillas

Journal of Anatomy, Volume 249, Issue 3, Page 544-564, September 2026.
Variation in arboreality across gorilla populations is associated with systematic differences in manual digital lengths. Using a new dataset of linear metrics from the Bwindi mountain gorillas, we quantify metacarpal and phalangeal lengths in eastern and western gorilla populations across all five rays. Consistent with quantified behavioral differences,
Elliot G. Greiner, Christopher B. Ruff, Charlotte King, Aventino Nkwasibwe, Thadee Muhire, Emmanuel Tibenda, Jason S. Massey, Juho‐Antti Junno, Rowan M. Sherwood, Jean Bosco Noheri, Fred Nizeyimana, Tierra Smiley Evans, Richard Muvunyi, Dennis Babaasa, Martha M. Robbins, Shannon C. McFarlin, Tracy L. Kivell   +16 more
wiley   +1 more source

“Devolution” of bipedality [PDF]

Proceedings of the National Academy of Sciences, 2008
Ozcelik et al. (1) report mutations in very-low-density lipoprotein receptor (VLDLR) that are associated with quadrupedal gait. They propose a pivotal role for VLDLR in the transition from quadrupedal to bipedal locomotion in man. VLDLR is a key regulator of cerebellar development in vertebrates (2).
Joachim Herz, Kym M. Boycott, Jillian S. Parboosingh   +2 more
openaire   +1 more source

Human lower limb muscle cross sectional area scales with positive allometry reflecting bipedal evolutionary history

Frontiers in Earth Science
Introduction: Muscle cross-sectional area is an important variable for understanding force generating potential and locomotor adaptation. Geometric scaling predicts area scales proportionally to body mass2/3.
Anna Warrener
doaj   +1 more source

Functional Differences in Muscle Architecture Across the Pelvis and Hind Limb of Primates

American Journal of Biological Anthropology, Volume 190, Issue 4, August 2026.
ABSTRACT Objectives Understanding the architectural diversity of primate musculature is essential for interpreting locomotor function and reconstructing evolutionary adaptations. This study examines whether interspecific differences in pelvic and hind limb muscle architecture reflect functional differentiation among major muscle groups.
Emma Guimaraes, Evie Vereecke, Ashleigh L. Wiseman   +2 more
wiley   +1 more source

Comparative Morphometric Analysis of the Pelvis of LB 1 (Homo floresiensis)

American Journal of Biological Anthropology, Volume 190, Issue 4, August 2026.
ABSTRACT Objectives Although there has been copious research on the postcranial functional morphology of Homo floresiensis, there has been relatively little study of its pelvis and its implications for interpretations of H. floresiensis locomotion. Here we present the first comparative morphometric analysis of the pelvis of LB 1, the holotype of H ...
Kristi L. Lewton, Ashley S. Hammond, Nico Alamsyah, Sofwan Noerwidi, Thomas Sutikna, Matthew M. Skinner, Matthew W. Tocheri   +6 more
wiley   +1 more source

Effect of Stump Length on Postural Steadiness During Quiet Stance in Unilateral Trans-Tibial Amputee [PDF]

Al Ameen Journal of Medical Sciences, 2010
Although force platform based Center of pressure (COP) measures of postural steadiness have been used to test the diagnostic significance of various cerebellar and labyrinthine lesions, but very few literature are available on amputees.
P. Lenka, D.N.Tiberwala
doaj  

Clades, Grades, and the Genus Problem: A Case for Revising Hominin Taxonomy

American Journal of Biological Anthropology, Volume 190, Issue 4, August 2026.
ABSTRACT Taxonomic practice in evolutionary biology increasingly prioritizes the recognition of monophyletic groups (clades), yet paleoanthropology still applies this principle inconsistently. Here, I outline these inconsistencies and broader challenges in hominin taxonomy and propose a potential solution.
Ian Towle
wiley   +1 more source