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:2/9/2016)... ... February 09, 2016 , ... ... LLC to help enterprises move workloads to the cloud. Cirracore provides a ... their cloud without traversing the Internet. Transformation Solutions (TSL Partners) provides a ...
(Date:2/9/2016)... ... February 09, 2016 , ... On January 12, 2016 ... an appointment after they noticed their furnace not producing any heat. Shortly after entering ... The cracked heat exchanger was leaking dangerous levels of carbon monoxide into the home, ...
(Date:2/9/2016)... ... February 09, 2016 , ... ... service to expand access to affordable hearing aids , increase industry transparency, ... individuals in the United States. , “For the average consumer, the hearing aid ...
(Date:2/9/2016)... ... February 09, 2016 , ... United Methodist Communications collaborated ... Prevention,” an animated video designed to prevent the next widespread Ebola ... video are being distributed throughout Togo, Liberia, Sierra Leone, Nigeria, Côte d’Ivoire and ...
(Date:2/9/2016)... ... February 09, 2016 , ... The Brain Preservation Foundation’s (BPF) ... from 21st Century Medicine (21CM) ( http://www.21cm.com/ ), spearheaded by recent MIT ... of an intact rabbit brain for extremely long-term storage using a combination of ...
Breaking Medicine News(10 mins):
(Date:2/9/2016)... 9, 2016 Mast Therapeutics, Inc. (NYSE ... sickle cell disease and heart failure, today announced that it ... purchase common stock in an underwritten public offering.  The offering ... be no assurance as to whether or when the offering ... terms of the offering.   --> ...
(Date:2/9/2016)... Feb. 9, 2016 The new report "Global Diagnostic Ultrasound ... & Consulting group reveals that global diagnostic ultrasound devices market was ... to US$ 7,466.3 million by 2019 at a CAGR of 6.8% ... global ultrasound market has been analyzed for six geographies of ... Asia-Pacific , Latin America , ...
(Date:2/9/2016)... , Feb. 9, 2016 The leader ... that AcceleDent ® is the recipient of the ... category. An FDA-cleared, Class II medical device that speeds ... percent and relieves pain often associated with treatment, AcceleDent ... participated in the annual Orthotown survey of ...
Breaking Medicine Technology: