Results 121 to 130 of about 31,799 (246)

Social efficiency deficit deciphers social dilemmas. [PDF]

open access: yesSci Rep, 2020
Arefin MR   +4 more
europepmc   +1 more source

The pelvis doesn't walk by itself: Wider pelves reduce the cost of walking over unstable surfaces

open access: yesThe Anatomical Record, EarlyView.
Abstract Walking over variable and/or unstable terrain is a key aspect of daily life and was crucial to the evolution of bipedalism. The ability to find gait solutions that maintained stability over uneven terrain for the least increase in metabolic cost was likely a hallmark of locomotor effectiveness in early humans, in particular acting as an ...
Cara Wall‐Scheffler   +2 more
wiley   +1 more source

Human evolution and the obstetrical dilemma: The pelvic floor hypothesis

open access: yesThe Anatomical Record, EarlyView.
Abstract Human childbirth is mechanically difficult because a large‐headed, broad‐shouldered fetus must pass through a comparatively narrow, twisted bony birth canal. Traditional explanations of this “obstetrical dilemma” emphasize the role of bipedal locomotion in inhibiting the evolution of a wider, more spacious pelvis.
Barbara Fischer, Ekaterina Stansfield
wiley   +1 more source

Dilemmas of Social Movements

open access: yesActa Universitatis Sapientiae: European and Regional Studies, 2019
Simon Eszter
doaj   +1 more source

Pelvic breadth and juvenile locomotor energetics: Implications for the obstetrical dilemma hypothesis across human growth in past and present humans

open access: yesThe Anatomical Record, EarlyView.
Abstract The obstetrical dilemma hypothesis (ODH) proposes an evolutionary trade‐off between obstetric requirements and locomotor performance. However, whether external pelvic breadth measures influence walking energetics during human growth remains poorly understood.
Guillermo Zorrilla‐Revilla   +4 more
wiley   +1 more source

The “costly son” hypothesis: Sons exacerbate obstetrical dilemmas in humans and other mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract Human childbirth has often been considered uniquely difficult among mammals, yet recent evidence suggests that obstructed labor and fetopelvic disproportion are widespread across placental mammals. Here, we propose the “costly son” hypothesis: because male offspring are typically larger at birth, they impose greater obstetric risk on mothers ...
Nicole D. S. Grunstra   +1 more
wiley   +1 more source

Plasma Proteomics Identifies Molecular Signatures and Biomarkers Associated With High Structural Damage in Ankylosing Spondylitis

open access: yesArthritis &Rheumatology, EarlyView.
Objective Pathologic bone formation in ankylosing spondylitis (AS) is not fully reflected by systemic inflammation, limiting the utility of markers of inflammation for structural damage assessment. This study aimed to identify plasma protein signatures associated with structural damage severity in AS.
Tiantian Sun   +9 more
wiley   +1 more source

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