Lead author Dr. Daniel Lieberman, a professor of human evolutionary biology at Harvard University, and his team used computer models to simulate the energy costs of walking on two legs compared to walking on four legs. The models showed that bipedalism was more energy-efficient for walking at speeds of 3.5 miles per hour or faster. This suggests that bipedalism may have evolved as a way for our ancestors to cover long distances more efficiently, such as when they were hunting or gathering food.
In addition to energy savings, bipedalism may also have provided other advantages, such as increased mobility and the ability to use tools and carry objects more easily. However, the study also suggests that bipedalism may have come at a cost, such as increased risk of injury and lower back pain.
Overall, the study provides new evidence to support the hypothesis that bipedalism evolved as a way to reduce energy expenditure during long-distance travel. This evolutionary adaptation may have played a crucial role in the success and spread of the human species.
Additional information:
The study was conducted using computer models that simulated the energy costs of walking on two legs compared to walking on four legs. The models took into account factors such as body size, limb length, and walking speed.
The models showed that bipedalism was more energy-efficient for walking at speeds of 3.5 miles per hour or faster. This suggests that bipedalism may have evolved as a way for our ancestors to cover long distances more efficiently, such as when they were hunting or gathering food.
In addition to energy savings, bipedalism may also have provided other advantages, such as increased mobility and the ability to use tools and carry objects more easily. However, the study also suggests that bipedalism may have come at a cost, such as increased risk of injury and lower back pain.
Overall, the study provides new evidence to support the hypothesis that bipedalism evolved as a way to reduce energy expenditure during long-distance travel. This evolutionary adaptation may have played a crucial role in the success and spread of the human species.
