Concept explainers
To write:
About the stride length of a human among 65-kg or 500-kg quadruped, during ER.
Introduction:
Endurance running is also known as long-distance running, is a continuous running at a certain pace for a distance around 3 kilometers.
Explanation of Solution
During ER, the stride length of a human is more like 65-kg quadruped. The stride length in humans is more than 2m and can further exceed too. The speed of the ER is higher when body mass gets adjusted. Running exposes the skeletal system to much higher stress than walking, specifically, when the foot is colliding with the ground as they have U-shaped COT curves for walking, the human foot is only 9% of total leg mass, compared to 14% in chimpanzees.
ER range which was predicted for 500-kg quadruped, was low as compared to a 65-kg quadruped. The ER ranges reduce the force for the heavy legs.
Thus, running additionally presents issues for head adjustment. Unlike quadrupeds, people have vertically arranged necks that are less ready to balance the more prominent inclination of the head to pitch forward at foot strike during running than strolling.
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