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The gluteus maximus became a major role in walking and is one of the largest muscles in humans. This muscle is much smaller in chimps, which shows that it has an important role in bipedalism. When humans run, our upright posture tends to flex forward as each foot strikes the ground creating momentum forward.
Several morphological and behavioral developments were employed to achieve this goal: upright bipedal posture, longer legs, long tightly coiled hair on the top of the head, body painting, threatening synchronous body movements, loud voice and extremely loud rhythmic singing/stomping/drumming on external subjects. [82]
Au. afarensis has six total lumbar vertebrae with also twelve thoracic vertebra [12] Another key characteristic that enforced upright posture in hominin was the shape of the lumbar vertebra. The “s” shape of the lumbar vertebra is called spinal lordosis, which produces the unique convex curvature seen in upright bipeds. The vertebral column ...
Strengthening your back muscles helps to counteract that pull and keep you upright, according to her. Your core is another key player in maintaining aligned posture. "The deep core muscles support ...
Postural control refers to the maintenance of body posture in space. The central nervous system interprets sensory input to produce motor output that maintains upright posture. [ 1 ] Sensory information used for postural control largely comes from visual , proprioceptive , and vestibular systems. [ 2 ]
Gluteus Maximus: The gluteus maximus is primarily responsible for hip extension, external rotation, and helps maintain an upright posture. This muscle is a powerful hip extensor (meaning it brings ...
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