Navigation Links
Walking Upright Saves Humans 75 Pc More Energy Compared to Apes

Though as to exactly when humans started walking on two legs is something yet to be ascertained, scientists have nevertheless hypothesized that bipedalism evolved as a way of reducing locomotor energy costs.

In the first study to fully examine this theory among humans and adult chimpanzees, the team of scientists from Washington University in St. Louis, University of California and University of Arizona, used treadmill trials to analyze walking energetics and biomechanics for adult chimpanzees and humans.

The only other research study on chimpanzee locomotor cost, conducted in 1973, used juvenile chimpanzees, which have different locomotor mechanics and costs than adults.

The team also examined the early hominin fossil record, which they found to include predicted changes consistent with lower energy cost- longer hind legs compared to body mass and structural changes to the pelvic bone allowing for more upright walking.

Analysis of these features in early fossil hominins, coupled with analysis of bipedal walking in chimpanzees, revealed that human walking was around 75 percent less costly, in terms of energy and caloric expenditure than bipedal walking and quadrupedal knucklewalking in chimpanzees.

The energy savings could have provided early hominids with an evolutionary advantage over other apes by reducing the cost of foraging for food, said Herman Pontzer, Ph.D., assistant professor of Anthropology in Arts & Sciences at Washington University in St. Louis.

"Walking upright on two legs is a defining feature that makes us human. It distinguishes our entire lineage from all other apes," said Prof. Pontzer.

The study "Chimpanzee Locomotor Energetics and the Origin of Human Bipedalism" appears in online in the July 17 issue of the Proceedings of the National Academy of Sciences




'"/>




Page: 1

Related medicine news :

1. Brisk Walking lowers memory loss in women
2. Cobblestone Walking May Be The Key For Healthy Living.
3. Peripheral Artery Disease Can Be Delayed By Walking
4. Gardening, Walking and moderate drinking reduce risk of dementia
5. Hi-tech Walking Stick Developed For Visually Impaired
6. Fight Nicotine With Brisk Walking
7. Electronic Nerve Stimulator Enables Walking
8. Targeted Initiatives may Help Promote Walking in People
9. New Device for Stroke Patients Improves Walking
10. Walking Really is the Best Way to Keep Healthy
11. Walking is Vital to Keep Yourself Fit
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2017)... ... ... to Christmas:” a beautiful and enchanting tale that teaches children the true meaning of Christmas. ... in Oklahoma City, and a devoted woman of faith. , “Becoming a parent changes ... back of my mind for years, but actually doing it might have been a while ...
(Date:1/20/2017)... ... January 20, 2017 , ... “The Land of More and More”: ... issue of world hunger, and shares the simple and achievable answer. “The Land of ... member of the Fairview Missionary Church in Angola, Indiana where he works with the ...
(Date:1/19/2017)... ... January 20, 2017 , ... Today, the Centers for Medicare ... four of CMS’s Alternative Payment Models (APMs) in 2017. Clinicians who participate in APMs ... are an important part of the Administration’s effort to build a system that delivers ...
(Date:1/19/2017)... ... January 19, 2017 , ... Next week after January 20th, the ... Congressional political games that circumvent health needs of over 30 million. Many interviews with ... anxieties and needs government public servants were suppose to prioritize. Interviews provided below. ...
(Date:1/19/2017)... (PRWEB) , ... January 19, 2017 , ... With the cold weather here, many people ... Snow blowers are efficient when clearing large amounts of snow, but they can be dangerous ... the U.S. Consumer Product Safety Commission for the proper use of snow blowers:, ...
Breaking Medicine News(10 mins):
(Date:1/21/2017)... , Jan 20, 2017 Research and Markets ... Analysis & Trends - Technology, Route Of Administration, End User - ... ... is poised to grow at a CAGR of around 7.8% over ... This industry report analyzes the global markets for Advanced ...
(Date:1/20/2017)... -- Research and Markets has announced the addition ... BMP, BUN Creatinine, Electrolyte Testing, HbA1c Testing, Comprehensive Metabolic Panel, Liver ... - 2024" report to their offering. ... The global clinical laboratory testing market ... Introduction of innovative solutions on the grounds of maximum efficiency and ...
(Date:1/20/2017)... 20, 2017  Ethicon Endo-Surgery, Inc. announced ... Products, Inc., a privately held medical device ... tools used in operating rooms worldwide. The ... advanced energy devices with Megadyne,s innovative portfolio ... forward in Ethicon,s goal to deliver the ...
Breaking Medicine Technology: